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<hr><h1>tessellation.cpp</h1><a href="tessellation_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00008 <font class="comment">/* Copyright, 2000 Nevrax Ltd.</font>
00009 <font class="comment"> *</font>
00010 <font class="comment"> * This file is part of NEVRAX NEL.</font>
00011 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
00012 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00013 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
00014 <font class="comment"> * any later version.</font>
00015 <font class="comment"></font>
00016 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
00017 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00018 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00019 <font class="comment"> * General Public License for more details.</font>
00020 <font class="comment"></font>
00021 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00022 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
00023 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
00024 <font class="comment"> * MA 02111-1307, USA.</font>
00025 <font class="comment"> */</font>
00026
00027 <font class="preprocessor">#include "<a class="code" href="std3d_8h.html">std3d.h</a>"</font>
00028
00029 <font class="preprocessor">#include "<a class="code" href="tessellation_8h.html">3d/tessellation.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="patch_8h.html">3d/patch.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="src_23d_2zone_8h.html">3d/zone.h</a>"</font>
00032 <font class="preprocessor">#include "<a class="code" href="common_8h.html">nel/misc/common.h</a>"</font>
00033 <font class="preprocessor">#include "<a class="code" href="landscape__profile_8h.html">3d/landscape_profile.h</a>"</font>
00034 <font class="preprocessor">#include "<a class="code" href="landscape_8h.html">3d/landscape.h</a>"</font>
00035 <font class="preprocessor">#include "<a class="code" href="patchdlm__context_8h.html">3d/patchdlm_context.h</a>"</font>
00036 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00037 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
00038
00039
00040 <font class="keyword">namespace </font>NL3D
00041 {
00042
00043
00044 <font class="comment">// ***************************************************************************</font>
<a name="l00045"></a><a class="code" href="tessellation_8cpp.html#a0">00045</a> <font class="preprocessor">#define NL3D_TESS_USE_QUADRANT_THRESHOLD 0.1f</font>
00046 <font class="preprocessor"></font>
00047
00048 <font class="comment">// ***************************************************************************</font>
00049 <font class="comment">// The normal Uvs format.</font>
00050 <font class="keyword">const</font> uint8 <a class="code" href="namespaceNL3D.html#a238">TileUvFmtNormal1</a>= 0;
00051 <font class="keyword">const</font> uint8 <a class="code" href="namespaceNL3D.html#a239">TileUvFmtNormal2</a>= 1;
00052 <font class="keyword">const</font> uint8 <a class="code" href="namespaceNL3D.html#a240">TileUvFmtNormal3</a>= 2;
00053 <font class="keyword">const</font> uint8 <a class="code" href="namespaceNL3D.html#a241">TileUvFmtNormal4</a>= 3;
00054 <font class="keyword">const</font> uint8 <a class="code" href="namespaceNL3D.html#a242">TileUvFmtNormal5</a>= 4;
00055
00056
00057 <font class="comment">// ***************************************************************************</font>
00058 <font class="comment">// \todo yoyo: may change this.</font>
00059 <font class="keyword">const</font> <font class="keywordtype">float</font> <a class="code" href="namespaceNL3D.html#a243">TileSize</a>= 128;
00060
00061
00062
00063
00064 <font class="comment">// ***************************************************************************</font>
00065 <font class="comment">// ***************************************************************************</font>
00066 <font class="comment">// CTileMaterial</font>
00067 <font class="comment">// ***************************************************************************</font>
00068 <font class="comment">// ***************************************************************************</font>
00069
00070
00071 <font class="comment">// ***************************************************************************</font>
<a name="l00072"></a><a class="code" href="structNL3D_1_1CTileMaterial.html#a0">00072</a> CTileMaterial::CTileMaterial()
00073 {
00074 <font class="comment">// By default, all pass are NULL.</font>
00075 <font class="keywordflow">for</font>(uint i=0; i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>; i++)
00076 {
00077 <a class="code" href="structNL3D_1_1CTileMaterial.html#m4">TileFaceVectors</a>[i]= NULL;
00078 }
00079 }
00080
00081
00082 <font class="comment">// ***************************************************************************</font>
<a name="l00083"></a><a class="code" href="structNL3D_1_1CTileMaterial.html#a1">00083</a> <font class="keywordtype">void</font> CTileMaterial::appendTileToEachRenderPass(uint patchNumRenderableFaces)
00084 {
00085 <font class="keywordflow">for</font>(uint i=0;i<<a class="code" href="landscape__def_8h.html#a0">NL3D_MAX_TILE_PASS</a>;i++)
00086 {
00087 <font class="comment">// If RdrPass exist, add this Material Id</font>
00088 CPatchRdrPass *rdrPass= <a class="code" href="structNL3D_1_1CTileMaterial.html#m2">Pass</a>[i].PatchRdrPass;
00089 <font class="keywordflow">if</font>(rdrPass!=NULL)
00090 {
00091 <font class="comment">/* enlarge the capacity of the pass so it can renders the tile faces of this patch.</font>
00092 <font class="comment"> * NumRenderableFaces is really too big since the tile-material surely doesn't use all</font>
00093 <font class="comment"> * faces of the patch (except if same texture...)</font>
00094 <font class="comment"> * But doesn't matter. Even if all the visible Tile Surface (80m*80m) is in the same pass,</font>
00095 <font class="comment"> * it leads to only 76K final in CLandscapeGlobals::PassTriArray:</font>
00096 <font class="comment"> * 80*80(Visible surface at 80m max) /4 (2m*2m) *2(triangles) *2 (over-estimate) *3*4(triSize)=</font>
00097 <font class="comment"> * 76800</font>
00098 <font class="comment"> */</font>
00099 rdrPass->appendRdrPatchTile(i, &<a class="code" href="structNL3D_1_1CTileMaterial.html#m2">Pass</a>[i], patchNumRenderableFaces);
00100 }
00101 }
00102 }
00103
00104
00105 <font class="comment">// ***************************************************************************</font>
00106 <font class="comment">// ***************************************************************************</font>
00107 <font class="comment">// CTessVertex</font>
00108 <font class="comment">// ***************************************************************************</font>
00109 <font class="comment">// ***************************************************************************</font>
00110
00111
00112 <font class="comment">// ***************************************************************************</font>
<a name="l00113"></a><a class="code" href="classNL3D_1_1CTessVertex.html#a1">00113</a> <font class="keywordtype">void</font> CTessVertex::computeGeomPos()
00114 {
00115 <font class="comment">// Compute Basic ErrorMetric.</font>
00116 <font class="keywordtype">float</font> sqrDist= (<a class="code" href="classNL3D_1_1CTessVertex.html#m1">StartPos</a> - CLandscapeGlobals::RefineCenter).sqrnorm();
00117 <font class="keywordtype">float</font> pgeom= <a class="code" href="classNL3D_1_1CTessVertex.html#m3">MaxFaceSize</a> * CLandscapeGlobals::OORefineThreshold / sqrDist;
00118
00119 <font class="comment">// Compute ErrorMetric modified by TileNear transition, only if TileNear transition.</font>
00120 <font class="keywordflow">if</font>( sqrDist< CLandscapeGlobals::TileDistFarSqr )
00121 {
00122 <font class="comment">// Soft optim: do it only if necessary, ie result of max(errorMetric, errorMetricModified) is foreseeable here.</font>
00123 <font class="keywordflow">if</font>(pgeom < <a class="code" href="classNL3D_1_1CTessVertex.html#m4">MaxNearLimit</a>)
00124 {
00125 <font class="keywordtype">float</font> f= (CLandscapeGlobals::TileDistFarSqr - sqrDist) * CLandscapeGlobals::OOTileDistDeltaSqr;
00126 <a class="code" href="namespaceNLMISC.html#a215">clamp</a>(f, 0, 1);
00127 <font class="comment">// ^4 gives better smooth result</font>
00128 f= <a class="code" href="namespaceNLMISC.html#a214">sqr</a>(f);
00129 f= <a class="code" href="namespaceNLMISC.html#a214">sqr</a>(f);
00130 <font class="comment">// interpolate the errorMetric</font>
00131 pgeom= <a class="code" href="classNL3D_1_1CTessVertex.html#m4">MaxNearLimit</a>*f + pgeom*(1-f);
00132 }
00133 }
00134
00135 <font class="comment">// Interpolate StartPos to EndPos, between 1 and 2.</font>
00136 <font class="keywordflow">if</font>(pgeom<=1.0f)
00137 <a class="code" href="classNL3D_1_1CTessVertex.html#m0">Pos</a>= <a class="code" href="classNL3D_1_1CTessVertex.html#m1">StartPos</a>;
00138 <font class="keywordflow">else</font> <font class="keywordflow">if</font>(pgeom>=2.0f)
00139 <a class="code" href="classNL3D_1_1CTessVertex.html#m0">Pos</a>= <a class="code" href="classNL3D_1_1CTessVertex.html#m2">EndPos</a>;
00140 <font class="keywordflow">else</font>
00141 {
00142 <font class="keywordtype">float</font> f= pgeom - 1.0f;
00143 <a class="code" href="classNL3D_1_1CTessVertex.html#m0">Pos</a>= f * (<a class="code" href="classNL3D_1_1CTessVertex.html#m2">EndPos</a>-<a class="code" href="classNL3D_1_1CTessVertex.html#m1">StartPos</a>) + <a class="code" href="classNL3D_1_1CTessVertex.html#m1">StartPos</a>;
00144 }
00145 }
00146
00147
00148 <font class="comment">// ***************************************************************************</font>
00149 <font class="comment">// ***************************************************************************</font>
00150 <font class="comment">// CTessFace</font>
00151 <font class="comment">// ***************************************************************************</font>
00152 <font class="comment">// ***************************************************************************</font>
00153
00154
00155 <font class="comment">// ***************************************************************************</font>
<a name="l00156"></a><a class="code" href="classNL3D_1_1CTessFace.html#r0">00156</a> CTessFace CTessFace::CantMergeFace;
<a name="l00157"></a><a class="code" href="classNL3D_1_1CTessFace.html#p0">00157</a> CTessFace CTessFace::MultipleBindFace;
00158
00159
00160 <font class="comment">// ***************************************************************************</font>
<a name="l00161"></a><a class="code" href="classNL3D_1_1CTessFace.html#a0">00161</a> CTessFace::CTessFace()
00162 {
00163 <font class="comment">// Don't modify any of it!!</font>
00164 <font class="comment">// Patch, SonLeft and SonRight nullity are very usefull for MultiplePatch faces, and CantMergeFace.</font>
00165
00166 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>= NULL;
00167 <a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>=<a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>=<a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>= NULL;
00168 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>=<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>=<a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>= NULL;
00169 <a class="code" href="classNL3D_1_1CTessFace.html#z819_7">Father</a>=<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>=<a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>= NULL;
00170 <a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a>=0;
00171 <a class="code" href="classNL3D_1_1CTessFace.html#z821_0">ErrorMetricDate</a>= 0;
00172 <font class="comment">// Size, Center, paramcoord undetermined.</font>
00173
00174 <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>= NULL;
00175 <font class="comment">// Very important (for split reasons). Init Tilefaces to NULL.</font>
00176 <font class="keywordflow">for</font>(sint i=0;i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>;i++)
00177 {
00178 <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]=NULL;
00179 }
00180
00181 <a class="code" href="classNL3D_1_1CTessFace.html#z819_14">RecursMarkCanMerge</a>=<font class="keyword">false</font>;
00182 <a class="code" href="classNL3D_1_1CTessFace.html#z819_15">RecursMarkForceMerge</a>=<font class="keyword">false</font>;
00183
00184
00185 <a class="code" href="landscape__profile_8h.html#a2">NL3D_PROFILE_LAND_ADD</a>(<a class="code" href="namespaceNL3D.html#a73">ProfNTessFace</a>, 1);
00186 }
00187
00188
00189 <font class="comment">// ***************************************************************************</font>
<a name="l00190"></a><a class="code" href="classNL3D_1_1CTessFace.html#a1">00190</a> CTessFace::~CTessFace()
00191 {
00192 <font class="comment">// Old Code. This is not sufficient to clear the CTessFace.</font>
00193 <font class="comment">// Vertices and Uvs must be correctly cleared too (but difficult because of sharing).</font>
00194 <font class="comment">/*</font>
00195 <font class="comment"> Patch->getLandscape()->deleteTessFace(SonLeft);</font>
00196 <font class="comment"> Patch->getLandscape()->deleteTessFace(SonRight);</font>
00197 <font class="comment"></font>
00198 <font class="comment"> // update neighbors.</font>
00199 <font class="comment"> if(FBase) FBase->changeNeighbor(this, NULL);</font>
00200 <font class="comment"> if(FLeft) FLeft->changeNeighbor(this, NULL);</font>
00201 <font class="comment"> if(FRight) FRight->changeNeighbor(this, NULL);</font>
00202 <font class="comment"></font>
00203 <font class="comment"> FBase=FLeft=FRight= NULL;</font>
00204 <font class="comment"> */</font>
00205
00206 <a class="code" href="landscape__profile_8h.html#a2">NL3D_PROFILE_LAND_ADD</a>(<a class="code" href="namespaceNL3D.html#a73">ProfNTessFace</a>, -1);
00207 }
00208
00209
00210 <font class="comment">// ***************************************************************************</font>
<a name="l00211"></a><a class="code" href="classNL3D_1_1CTessFace.html#a9">00211</a> <font class="keywordtype">float</font> CTessFace::computeNearLimit()
00212 {
00213 <font class="comment">// General formula for Level, function of Size, treshold etc...:</font>
00214 <font class="comment">// WantedLevel= log2(BaseSize / sqrdist / RefineThreshold);</font>
00215 <font class="comment">// <=> WantedLevel= log2( CurSize*2^Level / sqrdist / RefineThreshold).</font>
00216 <font class="comment">// <=> WantedLevel= log2( ProjectedSize* 2^Level / RefineThreshold).</font>
00217 <font class="comment">// <=> 2^WantedLevel= ProjectedSize* 2^Level / RefineThreshold.</font>
00218 <font class="comment">// <=> ProjectedSize= (2^WantedLevel) * RefineThreshold / (2^Level);</font>
00219 <font class="comment">// <=> ProjectedSize= (1<<WantedLevel) * RefineThreshold / (1<<Level);</font>
00220 <font class="comment">// UnOptimised formula: limit= (1<<Patch->TileLimitLevel) / (1<<Level);</font>
00221 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a><=20);
00222 <font class="keyword">static</font> <font class="keyword">const</font> uint BigValue= 1<<20;
00223 <font class="keyword">static</font> <font class="keyword">const</font> <font class="keywordtype">float</font> OOBigValue= 1.0f / BigValue;
00224 <font class="keywordflow">return</font> (1<<<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel) * (OOBigValue*(BigValue>><a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a>));
00225 }
00226
00227
00228 <font class="comment">// ***************************************************************************</font>
<a name="l00229"></a><a class="code" href="classNL3D_1_1CTessFace.html#c0">00229</a> <font class="keywordtype">void</font> CTessFace::computeTileErrorMetric()
00230 {
00231 <font class="comment">// We must take a more correct errometric here: We must have sons face which have</font>
00232 <font class="comment">// lower projectedsize than father. This is not the case if Center of face is taken (but when not in</font>
00233 <font class="comment">// tile mode this is nearly the case). So take the min dist from 3 points.</font>
00234 <font class="keywordtype">float</font> s0= (<a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>->EndPos - CLandscapeGlobals::RefineCenter).sqrnorm();
00235 <font class="keywordtype">float</font> s1= (<a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>->EndPos - CLandscapeGlobals::RefineCenter).sqrnorm();
00236 <font class="keywordtype">float</font> s2= (<a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>->EndPos - CLandscapeGlobals::RefineCenter).sqrnorm();
00237 <font class="keywordtype">float</font> sqrdist= minof(s0, s1, s2);
00238 <font class="comment">// It is also VERY important to take the min of 3, to ensure the split in TileMode when Far1 vertex begin</font>
00239 <font class="comment">// to blend (see Patch::renderFar1() render).</font>
00240
00241 <font class="comment">// NB: VertexProgram geomorph take sqrdist= (SplitPoint - RefineCenter).sqrnorm();</font>
00242 <font class="comment">// It's OK because geomorph will start "far" after the split.</font>
00243
00244 <font class="keywordflow">if</font>(sqrdist< CLandscapeGlobals::TileDistFarSqr)
00245 {
00246 <font class="keywordtype">float</font> nearLimit;
00247 nearLimit= CLandscapeGlobals::RefineThreshold * <a class="code" href="classNL3D_1_1CTessFace.html#a9">computeNearLimit</a>();
00248 <font class="comment">// If we are not so subdivided.</font>
00249 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z821_3">ErrorMetric</a><nearLimit)
00250 {
00251 <font class="keywordflow">if</font>(sqrdist< CLandscapeGlobals::TileDistNearSqr)
00252 {
00253 <a class="code" href="classNL3D_1_1CTessFace.html#z821_3">ErrorMetric</a>=nearLimit;
00254 }
00255 <font class="keywordflow">else</font>
00256 {
00257 <font class="comment">// Smooth transition to the nearLimit of tesselation.</font>
00258 <font class="keywordtype">float</font> f= ( CLandscapeGlobals::TileDistFarSqr - sqrdist ) * CLandscapeGlobals::OOTileDistDeltaSqr;
00259 <font class="comment">// sqr gives better result, by smoothing more the start of transition.</font>
00260 f= <a class="code" href="namespaceNLMISC.html#a214">sqr</a>(f);
00261 f= <a class="code" href="namespaceNLMISC.html#a214">sqr</a>(f);
00262 <a class="code" href="classNL3D_1_1CTessFace.html#z821_3">ErrorMetric</a>= <a class="code" href="classNL3D_1_1CTessFace.html#z821_3">ErrorMetric</a> + (nearLimit-<a class="code" href="classNL3D_1_1CTessFace.html#z821_3">ErrorMetric</a>)*f;
00263
00264 <font class="comment">// If threshold is big like 0.5, transition is still hard, and pops occurs. But The goal is </font>
00265 <font class="comment">// 0.005 and less, so don't bother. </font>
00266 }
00267 }
00268 }
00269 }
00270
00271
00272 <font class="comment">// ***************************************************************************</font>
<a name="l00273"></a><a class="code" href="classNL3D_1_1CTessFace.html#a10">00273</a> <font class="keywordtype">void</font> CTessFace::updateErrorMetric()
00274 {
00275 <font class="comment">// If already updated for this pass...</font>
00276 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z821_0">ErrorMetricDate</a>>= CLandscapeGlobals::CurrentDate)
00277 <font class="keywordflow">return</font>;
00278
00279 CVector viewdir= <a class="code" href="classNL3D_1_1CTessFace.html#z821_2">SplitPoint</a> - CLandscapeGlobals::RefineCenter;
00280 <font class="keywordtype">float</font> sqrdist= viewdir.sqrnorm();
00281
00282 <font class="comment">// trivial formula.</font>
00283 <font class="comment">//-----------------</font>
00284 <a class="code" href="classNL3D_1_1CTessFace.html#z821_3">ErrorMetric</a>= <a class="code" href="classNL3D_1_1CTessFace.html#z821_1">Size</a>/ sqrdist;
00285
00286
00287 <font class="comment">// Hoppe97 formula: k�= a� * ("v-e"� - ((v-e).n)�) / "v-e"^4.</font>
00288 <font class="comment">//-----------------</font>
00289 <font class="comment">// Can't do it because geomorph is made on Graphic card, so the simplier is the better.</font>
00290
00291
00292 <font class="comment">// TileMode Impact.</font>
00293 <font class="comment">//-----------------</font>
00294 <font class="comment">/* TileMode Impact. We must split at least at TileLimitLevel, but only if the triangle</font>
00295 <font class="comment"> has a chance to enter in the TileDistFar sphere.</font>
00296 <font class="comment"> */</font>
00297 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a><<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel && sqrdist < <a class="code" href="namespaceNLMISC.html#a214">sqr</a>(CLandscapeGlobals::TileDistFar+<a class="code" href="classNL3D_1_1CTessFace.html#z821_4">MaxDistToSplitPoint</a>) )
00298 {
00299 <a class="code" href="classNL3D_1_1CTessFace.html#c0">computeTileErrorMetric</a>();
00300 }
00301
00302 <a class="code" href="classNL3D_1_1CTessFace.html#z821_0">ErrorMetricDate</a>= CLandscapeGlobals::CurrentDate;
00303 }
00304
00305
00306 <font class="comment">// ***************************************************************************</font>
<a name="l00307"></a><a class="code" href="classNL3D_1_1CTessFace.html#c1">00307</a> <font class="keyword">inline</font> <font class="keywordtype">float</font> CTessFace::computeTileEMForUpdateRefine(<font class="keywordtype">float</font> distSplitPoint, <font class="keywordtype">float</font> distMinFace, <font class="keywordtype">float</font> nearLimit)
00308 {
00309 <font class="keywordtype">float</font> ema;
00310 <font class="comment">// Normal ErrorMetric simulation.</font>
00311 ema= <a class="code" href="classNL3D_1_1CTessFace.html#z821_1">Size</a> / <a class="code" href="namespaceNLMISC.html#a214">sqr</a>(distSplitPoint);
00312
00313 <font class="comment">// TileErrorMetric simulation.</font>
00314 <font class="keywordflow">if</font>(distMinFace < CLandscapeGlobals::TileDistFar)
00315 {
00316 <font class="comment">// If we are not so subdivided.</font>
00317 <font class="keywordflow">if</font>( ema<nearLimit )
00318 {
00319 <font class="keywordflow">if</font>( distMinFace< CLandscapeGlobals::TileDistNear)
00320 {
00321 ema= nearLimit;
00322 }
00323 <font class="keywordflow">else</font>
00324 {
00325 <font class="comment">// Smooth transition to the nearLimit of tesselation.</font>
00326 <font class="keywordtype">float</font> f= ( CLandscapeGlobals::TileDistFarSqr - <a class="code" href="namespaceNLMISC.html#a214">sqr</a>(distMinFace) ) * CLandscapeGlobals::OOTileDistDeltaSqr;
00327 <font class="comment">// sqr gives better result, by smoothing more the start of transition.</font>
00328 f= <a class="code" href="namespaceNLMISC.html#a214">sqr</a>(f);
00329 f= <a class="code" href="namespaceNLMISC.html#a214">sqr</a>(f);
00330 ema= ema + (nearLimit-ema)*f;
00331 }
00332 }
00333 }
00334
00335 <font class="keywordflow">return</font> ema * CLandscapeGlobals::OORefineThreshold;
00336 }
00337
00338
00339 <font class="comment">// ***************************************************************************</font>
<a name="l00340"></a><a class="code" href="classNL3D_1_1CTessFace.html#a16">00340</a> <font class="keywordtype">void</font> CTessFace::computeSplitPoint()
00341 {
00342 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>())
00343 {
00344 <font class="comment">// If it is a rectangular triangle, it will be splitted on the middle of VBase/VLeft.</font>
00345 <font class="comment">// see splitRectangular() conventions.</font>
00346 <font class="comment">// So for good geomorph compute per vertex, we must have this SplitPoint on this middle.</font>
00347 <a class="code" href="classNL3D_1_1CTessFace.html#z821_2">SplitPoint</a>= (<a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>->EndPos + <a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>->EndPos)/2;
00348 }
00349 <font class="keywordflow">else</font>
00350 {
00351 <font class="comment">// If it is a square triangle, it will be splitted on middle of VLeft/VRight. </font>
00352 <font class="comment">// So for good geomorph compute per vertex, we must have this SplitPoint on this middle.</font>
00353 <a class="code" href="classNL3D_1_1CTessFace.html#z821_2">SplitPoint</a>= (<a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>->EndPos + <a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>->EndPos)/2;
00354 }
00355
00356 <font class="comment">// compute MaxDistToSplitPoint</font>
00357 <font class="keywordtype">float</font> d0= (<a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>->EndPos - <a class="code" href="classNL3D_1_1CTessFace.html#z821_2">SplitPoint</a>).sqrnorm();
00358 <font class="keywordtype">float</font> d1= (<a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>->EndPos - <a class="code" href="classNL3D_1_1CTessFace.html#z821_2">SplitPoint</a>).sqrnorm();
00359 <font class="keywordtype">float</font> d2= (<a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>->EndPos - <a class="code" href="classNL3D_1_1CTessFace.html#z821_2">SplitPoint</a>).sqrnorm();
00360 <a class="code" href="classNL3D_1_1CTessFace.html#z821_4">MaxDistToSplitPoint</a>= max(d0, d1);
00361 <a class="code" href="classNL3D_1_1CTessFace.html#z821_4">MaxDistToSplitPoint</a>= max(<a class="code" href="classNL3D_1_1CTessFace.html#z821_4">MaxDistToSplitPoint</a>, d2);
00362 <font class="comment">// Get the distance.</font>
00363 <a class="code" href="classNL3D_1_1CTessFace.html#z821_4">MaxDistToSplitPoint</a>= sqrtf(<a class="code" href="classNL3D_1_1CTessFace.html#z821_4">MaxDistToSplitPoint</a>);
00364 }
00365
00366 <font class="comment">// ***************************************************************************</font>
<a name="l00367"></a><a class="code" href="classNL3D_1_1CTessFace.html#z822_0">00367</a> <font class="keywordtype">void</font> CTessFace::allocTileUv(TTileUvId <a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>)
00368 {
00369 <font class="comment">// TileFaces must have been build.</font>
00370 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[<a class="code" href="landscape__def_8h.html#a2">NL3D_TILE_PASS_RGB0</a>]);
00371
00372 <font class="comment">// what src??</font>
00373 CTessVertex *vertexSrc;
00374 <font class="keywordflow">switch</font>(id)
00375 {
00376 <font class="keywordflow">case</font> <a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>: vertexSrc= <a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>; <font class="keywordflow">break</font>;
00377 <font class="keywordflow">case</font> <a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>: vertexSrc= <a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>; <font class="keywordflow">break</font>;
00378 <font class="keywordflow">case</font> <a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>: vertexSrc= <a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>; <font class="keywordflow">break</font>;
00379 <font class="keywordflow">default</font>: <a class="code" href="debug_8h.html#a12">nlstop</a>;
00380 };
00381
00382 <font class="comment">// Do it for all possible pass</font>
00383 <font class="keywordflow">for</font>(sint i=0;i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>;i++)
00384 {
00385 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i])
00386 {
00387 CTessNearVertex *newNear= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessNearVertex();
00388 newNear->Src= vertexSrc;
00389 <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>]= newNear;
00390 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendNearVertexToRenderList(<a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>, newNear);
00391
00392 <font class="comment">// May Allocate/Fill VB. Do it after allocTileUv, because UVs are not comuted yet.</font>
00393 }
00394 }
00395 }
00396
00397 <font class="comment">// ***************************************************************************</font>
<a name="l00398"></a><a class="code" href="classNL3D_1_1CTessFace.html#z822_4">00398</a> <font class="keywordtype">void</font> CTessFace::checkCreateFillTileVB(TTileUvId <a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>)
00399 {
00400 <font class="comment">// TileFaces must have been build.</font>
00401 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[<a class="code" href="landscape__def_8h.html#a2">NL3D_TILE_PASS_RGB0</a>]);
00402
00403 <font class="keywordflow">for</font>(sint i=0;i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>;i++)
00404 {
00405 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i])
00406 {
00407 CTessNearVertex *vertNear;
00408 vertNear= <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>];
00409
00410 <font class="comment">// May Allocate/Fill VB.</font>
00411 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkCreateVertexVBNear(vertNear);
00412 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkFillVertexVBNear(vertNear);
00413 }
00414 }
00415 }
00416
00417
00418 <font class="comment">// ***************************************************************************</font>
<a name="l00419"></a><a class="code" href="classNL3D_1_1CTessFace.html#z822_5">00419</a> <font class="keywordtype">void</font> CTessFace::checkFillTileVB(TTileUvId <a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>)
00420 {
00421 <font class="comment">// TileFaces must have been build.</font>
00422 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[<a class="code" href="landscape__def_8h.html#a2">NL3D_TILE_PASS_RGB0</a>]);
00423
00424 <font class="keywordflow">for</font>(sint i=0;i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>;i++)
00425 {
00426 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i])
00427 {
00428 CTessNearVertex *vertNear;
00429 vertNear= <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>];
00430
00431 <font class="comment">// May Fill VB.</font>
00432 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkFillVertexVBNear(vertNear);
00433 }
00434 }
00435 }
00436
00437
00438 <font class="comment">// ***************************************************************************</font>
<a name="l00439"></a><a class="code" href="classNL3D_1_1CTessFace.html#z822_1">00439</a> <font class="keywordtype">void</font> CTessFace::deleteTileUv(TTileUvId <a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>)
00440 {
00441 <font class="comment">// TileFaces must still exist.</font>
00442 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[<a class="code" href="landscape__def_8h.html#a2">NL3D_TILE_PASS_RGB0</a>]);
00443
00444 <font class="keywordflow">for</font>(sint i=0;i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>;i++)
00445 {
00446 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i])
00447 {
00448 CTessNearVertex *oldNear;
00449 oldNear= <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>];
00450 <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>]=NULL;
00451
00452 <font class="comment">// May delete this vertex from VB.</font>
00453 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkDeleteVertexVBNear(oldNear);
00454
00455 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->removeNearVertexFromRenderList(<a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>, oldNear);
00456 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->deleteTessNearVertex(oldNear);
00457 }
00458 }
00459 }
00460 <font class="comment">// ***************************************************************************</font>
<a name="l00461"></a><a class="code" href="classNL3D_1_1CTessFace.html#z822_2">00461</a> <font class="keywordtype">void</font> CTessFace::copyTileUv(TTileUvId dstId, CTessFace *srcFace, TTileUvId srcId)
00462 {
00463 <font class="comment">// TileFaces must have been build.</font>
00464 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[<a class="code" href="landscape__def_8h.html#a2">NL3D_TILE_PASS_RGB0</a>]);
00465
00466 <font class="comment">// Since this a ptr-copy, no need to add/remove the renderlist of near vertices.</font>
00467
00468 <font class="keywordflow">for</font>(sint i=0;i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>;i++)
00469 {
00470 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i])
00471 {
00472 <font class="comment">// The srcface should have the same tileFaces enabled.</font>
00473 <a class="code" href="debug_8h.html#a6">nlassert</a>(srcFace->TileFaces[i]);
00474
00475 <font class="comment">// copy from src.</font>
00476 CTessNearVertex *copyNear;
00477 copyNear= srcFace->TileFaces[i]->V[srcId];
00478
00479 <font class="comment">// copy to dst.</font>
00480 <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[dstId]= copyNear;
00481 }
00482 }
00483 }
00484 <font class="comment">// ***************************************************************************</font>
<a name="l00485"></a><a class="code" href="classNL3D_1_1CTessFace.html#z822_3">00485</a> <font class="keywordtype">void</font> CTessFace::heritTileUv(CTessFace *baseFace)
00486 {
00487 <font class="comment">// TileFaces must have been build.</font>
00488 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[<a class="code" href="landscape__def_8h.html#a2">NL3D_TILE_PASS_RGB0</a>]);
00489
00490 <font class="keywordflow">for</font>(sint i=0;i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>;i++)
00491 {
00492 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i])
00493 {
00494 <font class="comment">// The baseface should have the same tileFaces enabled.</font>
00495 <a class="code" href="debug_8h.html#a6">nlassert</a>(baseFace->TileFaces[i]);
00496 <font class="comment">// VBase should be allocated.</font>
00497 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>]);
00498 <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>]->initMiddleUv(
00499 *baseFace->TileFaces[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>], *baseFace->TileFaces[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>]);
00500 }
00501 }
00502 }
00503
00504
00505 <font class="comment">// ***************************************************************************</font>
<a name="l00506"></a><a class="code" href="classNL3D_1_1CTessFace.html#z822_6">00506</a> <font class="keywordtype">void</font> CTessFace::buildTileFaces()
00507 {
00508 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>);
00509
00510 <font class="comment">// Do nothgin for lightmap pass, of course.</font>
00511 <font class="keywordflow">for</font>(sint i=0;i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>;i++)
00512 {
00513 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>->Pass[i].PatchRdrPass)
00514 {
00515 <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTileFace();
00516 <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>]= NULL;
00517 <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>]= NULL;
00518 <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>]= NULL;
00519 }
00520 }
00521 }
00522 <font class="comment">// ***************************************************************************</font>
<a name="l00523"></a><a class="code" href="classNL3D_1_1CTessFace.html#z822_7">00523</a> <font class="keywordtype">void</font> CTessFace::deleteTileFaces()
00524 {
00525 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>);
00526
00527 <font class="comment">// Do nothgin for lightmap pass, of course.</font>
00528 <font class="keywordflow">for</font>(sint i=0;i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>;i++)
00529 {
00530 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>->Pass[i].PatchRdrPass)
00531 {
00532 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]);
00533 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->deleteTileFace(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]);
00534 <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]= NULL;
00535 }
00536 <font class="keywordflow">else</font>
00537 {
00538 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]==NULL);
00539 }
00540 }
00541 }
00542
00543 <font class="comment">// ***************************************************************************</font>
<a name="l00544"></a><a class="code" href="classNL3D_1_1CTessFace.html#z822_8">00544</a> <font class="keywordtype">bool</font> CTessFace::emptyTileFaces()
00545 {
00546 <font class="comment">// Do nothgin for lightmap pass, of course.</font>
00547 <font class="keywordflow">for</font>(sint i=0;i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>;i++)
00548 {
00549 <font class="comment">// Some TileFace exist??</font>
00550 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i])
00551 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00552 }
00553
00554 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00555 }
00556
00557
00558
00559 <font class="comment">// ***************************************************************************</font>
<a name="l00560"></a><a class="code" href="classNL3D_1_1CTessFace.html#c6">00560</a> <font class="keywordtype">void</font> CTessFace::initTileUvRGBA(sint pass, <font class="keywordtype">bool</font> <a class="code" href="driver__opengl__extension__def_8h.html#a420">alpha</a>, CParamCoord pointCoord, CParamCoord middle, CUV &uv)
00561 {
00562 <font class="comment">// Get good coordinate according to patch orientation.</font>
00563 uv.U= pointCoord.S<=middle.S? 0.0f: 1.0f;
00564 uv.V= pointCoord.T<=middle.T? 0.0f: 1.0f;
00565
00566 <font class="comment">// Get Tile Uv info: orientation and scale.</font>
00567 uint8 orient;
00568 CVector uvScaleBias;
00569 <font class="keywordtype">bool</font> is256;
00570 uint8 uvOff;
00571 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getTileUvInfo(<a class="code" href="classNL3D_1_1CTessFace.html#z820_1">TileId</a>, pass, <a class="code" href="driver__opengl__extension__def_8h.html#a420">alpha</a>, orient, uvScaleBias, is256, uvOff);
00572
00573 <font class="comment">// Orient the UV.</font>
00574 <font class="keywordtype">float</font> u= uv.U;
00575 <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>= uv.V;
00576 <font class="comment">// Speed rotation.</font>
00577 <font class="keywordflow">switch</font>(orient)
00578 {
00579 <font class="keywordflow">case</font> 0:
00580 uv.U= u;
00581 uv.V= <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>;
00582 <font class="keywordflow">break</font>;
00583 <font class="keywordflow">case</font> 1:
00584 uv.U= 1-<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>;
00585 uv.V= u;
00586 <font class="keywordflow">break</font>;
00587 <font class="keywordflow">case</font> 2:
00588 uv.U= 1-u;
00589 uv.V= 1-<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>;
00590 <font class="keywordflow">break</font>;
00591 <font class="keywordflow">case</font> 3:
00592 uv.U= <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>;
00593 uv.V= 1-u;
00594 <font class="keywordflow">break</font>;
00595 }
00596
00597 <font class="comment">// Do the 256x256.</font>
00598 <font class="keywordflow">if</font>(is256)
00599 {
00600 uv*= 0.5;
00601 <font class="keywordflow">if</font>(uvOff==2 || uvOff==3)
00602 uv.U+= 0.5;
00603 <font class="keywordflow">if</font>(uvOff==1 || uvOff==2)
00604 uv.V+= 0.5;
00605 }
00606
00607
00608 <font class="comment">// Do the HalfPixel scale bias.</font>
00609 <font class="keywordtype">float</font> hBiasXY, hBiasZ;
00610 <font class="keywordflow">if</font>(is256)
00611 {
00612 hBiasXY= CLandscapeGlobals::TilePixelBias256;
00613 hBiasZ = CLandscapeGlobals::TilePixelScale256;
00614 }
00615 <font class="keywordflow">else</font>
00616 {
00617 hBiasXY= CLandscapeGlobals::TilePixelBias128;
00618 hBiasZ = CLandscapeGlobals::TilePixelScale128;
00619 }
00620
00621
00622 <font class="comment">// Scale the UV.</font>
00623 uv.U*= uvScaleBias.z*hBiasZ;
00624 uv.V*= uvScaleBias.z*hBiasZ;
00625 uv.U+= uvScaleBias.x+hBiasXY;
00626 uv.V+= uvScaleBias.y+hBiasXY;
00627 }
00628
00629
00630 <font class="comment">// ***************************************************************************</font>
<a name="l00631"></a><a class="code" href="classNL3D_1_1CTessFace.html#c7">00631</a> <font class="keywordtype">void</font> CTessFace::initTileUvLightmap(CParamCoord pointCoord, CParamCoord middle, CUV &uv)
00632 {
00633 <font class="comment">// Get good coordinate according to patch orientation.</font>
00634 uv.U= pointCoord.S<=middle.S? 0.0f: 1.0f;
00635 uv.V= pointCoord.T<=middle.T? 0.0f: 1.0f;
00636
00637 <font class="comment">// Get Tile Lightmap Uv info: bias and scale.</font>
00638 CVector uvScaleBias;
00639 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getTileLightMapUvInfo(<a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>->TileS, <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>->TileT, uvScaleBias);
00640
00641 <font class="comment">// Scale the UV.</font>
00642 uv.U*= uvScaleBias.z;
00643 uv.V*= uvScaleBias.z;
00644 uv.U+= uvScaleBias.x;
00645 uv.V+= uvScaleBias.y;
00646 }
00647
00648
00649 <font class="comment">// ***************************************************************************</font>
<a name="l00650"></a><a class="code" href="classNL3D_1_1CTessFace.html#c8">00650</a> <font class="keywordtype">void</font> CTessFace::initTileUvDLM(CParamCoord pointCoord, CUV &uv)
00651 {
00652 <font class="comment">// get the dlm context from the patch.</font>
00653 CPatchDLMContext *dlmCtx= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->_DLMContext;
00654 <font class="comment">// mmust exist at creation of the tile.</font>
00655 <a class="code" href="debug_8h.html#a6">nlassert</a>(dlmCtx);
00656
00657 <font class="comment">// get coord in 0..1 range, along the patch.</font>
00658 uv.U= pointCoord.getS();
00659 uv.V= pointCoord.getT();
00660
00661 <font class="comment">// ScaleBias according to the context.</font>
00662 uv.U*= dlmCtx->DLMUScale;
00663 uv.V*= dlmCtx->DLMVScale;
00664 uv.U+= dlmCtx->DLMUBias;
00665 uv.V+= dlmCtx->DLMVBias;
00666 }
00667
00668
00669 <font class="comment">// ***************************************************************************</font>
<a name="l00670"></a><a class="code" href="classNL3D_1_1CTessFace.html#a7">00670</a> <font class="keywordtype">void</font> CTessFace::computeTileMaterial()
00671 {
00672 <font class="comment">// 0. Compute TileId.</font>
00673 <font class="comment">//-------------------</font>
00674 <font class="comment">// Square Order Patch assumption: assume that when a CTessFace become a tile, his base can ONLY be diagonal...</font>
00675 <font class="comment">/* a Patch:</font>
00676 <font class="comment"> A ________</font>
00677 <font class="comment"> |\ /|</font>
00678 <font class="comment"> | \ / |</font>
00679 <font class="comment"> C|__\B_/ |</font>
00680 <font class="comment"> | / \ |</font>
00681 <font class="comment"> | / \ |</font>
00682 <font class="comment"> |/______\|</font>
00683 <font class="comment"></font>
00684 <font class="comment"> Here, if OrderS*OrderT=2*2, ABC is a new CTessFace of a Tile, and AB is the diagonal of the tile.</font>
00685 <font class="comment"> Hence the middle of the tile is the middle of AB.</font>
00686 <font class="comment"></font>
00687 <font class="comment"> C must be created, but A and B may be created or copied from neighbor.</font>
00688 <font class="comment"> */</font>
00689 CParamCoord middle(<a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>,<a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>);
00690 sint ts= ((sint)middle.S * (sint)<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->OrderS) / 0x8000;
00691 sint tt= ((sint)middle.T * (sint)<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->OrderT) / 0x8000;
00692 <a class="code" href="classNL3D_1_1CTessFace.html#z820_1">TileId</a>= tt*<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->OrderS + ts;
00693
00694
00695 <font class="comment">// 1. Compute Tile Material.</font>
00696 <font class="comment">//--------------------------</font>
00697 <font class="comment">// if base neighbor is already at TileLimitLevel just ptr-copy, else create the TileMaterial...</font>
00698 <a class="code" href="debug_8h.html#a6">nlassert</a>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> || <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->Patch!=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a> || <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->Level<=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel);
00699 <font class="keywordtype">bool</font> copyFromBase;
00700 copyFromBase= (<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> && <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->Patch==<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>);
00701 copyFromBase= copyFromBase && (<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->Level==<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel && <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->TileMaterial!=NULL);
00702 <font class="comment">// NB: because of delete/recreateTileUvs(), FBase->TileMaterial may be NULL, even if face is at good TileLimitLevel.</font>
00703 <font class="keywordflow">if</font>(copyFromBase)
00704 {
00705 <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>= <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->TileMaterial;
00706 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->TileId== <a class="code" href="classNL3D_1_1CTessFace.html#z820_1">TileId</a>);
00707 }
00708 <font class="keywordflow">else</font>
00709 {
00710 sint i;
00711 <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTileMaterial();
00712 <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>->TileS= ts;
00713 <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>->TileT= tt;
00714
00715 <font class="comment">// Add this new material to the render list.</font>
00716 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendTileMaterialToRenderList(<a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>);
00717
00718 <font class="comment">// First, get a lightmap for this tile. NB: important to do this after appendTileMaterialToRenderList(), </font>
00719 <font class="comment">// because use TessBlocks.</font>
00720 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getTileLightMap(ts, tt, <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>->Pass[<a class="code" href="landscape__def_8h.html#a6">NL3D_TILE_PASS_LIGHTMAP</a>].PatchRdrPass);
00721
00722 <font class="comment">// Fill pass of multi pass material.</font>
00723 <font class="keywordflow">for</font>(i=0;i<<a class="code" href="landscape__def_8h.html#a0">NL3D_MAX_TILE_PASS</a>;i++)
00724 {
00725 <font class="comment">// Get the correct render pass, according to the tile number, and the pass.</font>
00726 <font class="keywordflow">if</font>(i!=<a class="code" href="landscape__def_8h.html#a6">NL3D_TILE_PASS_LIGHTMAP</a>)
00727 <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>->Pass[i].PatchRdrPass= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getTileRenderPass(<a class="code" href="classNL3D_1_1CTessFace.html#z820_1">TileId</a>, i);
00728 }
00729
00730 <font class="comment">// Fill Pass Info.</font>
00731 <font class="keywordflow">for</font>(i=0;i<<a class="code" href="landscape__def_8h.html#a0">NL3D_MAX_TILE_PASS</a>;i++)
00732 {
00733 <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>->Pass[i].TileMaterial= <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>;
00734 }
00735
00736 <font class="comment">// Do not append this tile to each RenderPass, done in preRender().</font>
00737 }
00738
00739
00740 <font class="comment">// 2. Compute Uvs.</font>
00741 <font class="comment">//----------------</font>
00742 <font class="comment">// NB: TileMaterial is already setup. Usefull for initTileUvLightmap() and initTileUvRGBA().</font>
00743
00744 <font class="comment">// First, must create The TileFaces, according to the TileMaterial passes.</font>
00745 <a class="code" href="classNL3D_1_1CTessFace.html#z822_6">buildTileFaces</a>();
00746
00747 <font class="comment">// Must allocate the Base, and insert into list.</font>
00748 <a class="code" href="classNL3D_1_1CTessFace.html#z822_0">allocTileUv</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
00749
00750
00751 <font class="comment">// Init LightMap UV, in RGB0 pass, UV1..</font>
00752 <a class="code" href="classNL3D_1_1CTessFace.html#c7">initTileUvLightmap</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>, middle, <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[<a class="code" href="landscape__def_8h.html#a2">NL3D_TILE_PASS_RGB0</a>]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>]->PUv1);
00753 <font class="comment">// Init DLM Uv, in RGB0 pass, UV2.</font>
00754 <a class="code" href="classNL3D_1_1CTessFace.html#c8">initTileUvDLM</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[<a class="code" href="landscape__def_8h.html#a2">NL3D_TILE_PASS_RGB0</a>]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>]->PUv2);
00755
00756 <font class="comment">// Init UV RGBA, for all pass (but lightmap).</font>
00757 <font class="keywordflow">for</font>(sint i=0;i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>;i++)
00758 {
00759 <a class="code" href="debug_8h.html#a6">nlassert</a>(i!=<a class="code" href="landscape__def_8h.html#a6">NL3D_TILE_PASS_LIGHTMAP</a>);
00760 <font class="comment">// If pass is valid</font>
00761 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>->Pass[i].PatchRdrPass)
00762 {
00763 <font class="comment">// Face must exist.</font>
00764 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]);
00765 <font class="comment">// Compute RGB UV in UV0.</font>
00766 <a class="code" href="classNL3D_1_1CTessFace.html#c6">initTileUvRGBA</a>(i, <font class="keyword">false</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>, middle, <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>]->PUv0);
00767 <font class="comment">// If transition tile, compute alpha UV in UV1. </font>
00768 <font class="comment">// Do it also for Additive, because may have Transition</font>
00769 <font class="keywordflow">if</font>(i== <a class="code" href="landscape__def_8h.html#a3">NL3D_TILE_PASS_RGB1</a> || i==<a class="code" href="landscape__def_8h.html#a4">NL3D_TILE_PASS_RGB2</a> || i==<a class="code" href="landscape__def_8h.html#a5">NL3D_TILE_PASS_ADD</a>)
00770 <a class="code" href="classNL3D_1_1CTessFace.html#c6">initTileUvRGBA</a>(i, <font class="keyword">true</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>, middle, <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>]->PUv1);
00771 }
00772 }
00773
00774 <font class="comment">// UVs are computed, may create and fill VB.</font>
00775 <a class="code" href="classNL3D_1_1CTessFace.html#z822_4">checkCreateFillTileVB</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
00776
00777
00778 <font class="comment">// if base neighbor is already at TileLimitLevel just ptr-copy, else create the left/right TileUvs...</font>
00779 <font class="keywordflow">if</font>(copyFromBase)
00780 {
00781 <font class="comment">// Just cross-copy the pointers.</font>
00782 <font class="comment">// Make Left near vertices be the Right vertices of FBase</font>
00783 <a class="code" href="classNL3D_1_1CTessFace.html#z822_2">copyTileUv</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>);
00784 <font class="comment">// Make Right near vertices be the Left vertices of FBase</font>
00785 <a class="code" href="classNL3D_1_1CTessFace.html#z822_2">copyTileUv</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>);
00786 }
00787 <font class="keywordflow">else</font>
00788 {
00789 <font class="comment">// Must allocate the left/right uv (and insert into list).</font>
00790 <a class="code" href="classNL3D_1_1CTessFace.html#z822_0">allocTileUv</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>);
00791 <a class="code" href="classNL3D_1_1CTessFace.html#z822_0">allocTileUv</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>);
00792
00793
00794 <font class="comment">// Init LightMap UV, in UvPass 0, UV1..</font>
00795 <a class="code" href="classNL3D_1_1CTessFace.html#c7">initTileUvLightmap</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>, middle, <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[<a class="code" href="landscape__def_8h.html#a2">NL3D_TILE_PASS_RGB0</a>]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>]->PUv1);
00796 <a class="code" href="classNL3D_1_1CTessFace.html#c7">initTileUvLightmap</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>, middle, <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[<a class="code" href="landscape__def_8h.html#a2">NL3D_TILE_PASS_RGB0</a>]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>]->PUv1);
00797 <font class="comment">// Init DLM Uv, in RGB0 pass, UV2.</font>
00798 <a class="code" href="classNL3D_1_1CTessFace.html#c8">initTileUvDLM</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[<a class="code" href="landscape__def_8h.html#a2">NL3D_TILE_PASS_RGB0</a>]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>]->PUv2);
00799 <a class="code" href="classNL3D_1_1CTessFace.html#c8">initTileUvDLM</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[<a class="code" href="landscape__def_8h.html#a2">NL3D_TILE_PASS_RGB0</a>]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>]->PUv2);
00800
00801 <font class="comment">// Init UV RGBA!</font>
00802 <font class="keywordflow">for</font>(sint i=0;i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>;i++)
00803 {
00804 <a class="code" href="debug_8h.html#a6">nlassert</a>(i!=<a class="code" href="landscape__def_8h.html#a6">NL3D_TILE_PASS_LIGHTMAP</a>);
00805 <font class="comment">// If pass is valid</font>
00806 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>->Pass[i].PatchRdrPass)
00807 {
00808 <font class="comment">// Face must exist.</font>
00809 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]);
00810 <font class="comment">// Compute RGB UV in UV0.</font>
00811 <a class="code" href="classNL3D_1_1CTessFace.html#c6">initTileUvRGBA</a>(i, <font class="keyword">false</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>, middle, <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>]->PUv0);
00812 <a class="code" href="classNL3D_1_1CTessFace.html#c6">initTileUvRGBA</a>(i, <font class="keyword">false</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>, middle, <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>]->PUv0);
00813 <font class="comment">// If transition tile, compute alpha UV in UV1.</font>
00814 <font class="comment">// Do it also for Additive, because may have Transition</font>
00815 <font class="keywordflow">if</font>(i== <a class="code" href="landscape__def_8h.html#a3">NL3D_TILE_PASS_RGB1</a> || i==<a class="code" href="landscape__def_8h.html#a4">NL3D_TILE_PASS_RGB2</a> || i==<a class="code" href="landscape__def_8h.html#a5">NL3D_TILE_PASS_ADD</a>)
00816 {
00817 <a class="code" href="classNL3D_1_1CTessFace.html#c6">initTileUvRGBA</a>(i, <font class="keyword">true</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>, middle, <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>]->PUv1);
00818 <a class="code" href="classNL3D_1_1CTessFace.html#c6">initTileUvRGBA</a>(i, <font class="keyword">true</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>, middle, <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>]->PUv1);
00819 }
00820 }
00821 }
00822
00823 <font class="comment">// UVs are computed, may create and fill VB.</font>
00824 <a class="code" href="classNL3D_1_1CTessFace.html#z822_4">checkCreateFillTileVB</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>);
00825 <a class="code" href="classNL3D_1_1CTessFace.html#z822_4">checkCreateFillTileVB</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>);
00826 }
00827
00828 }
00829 <font class="comment">// ***************************************************************************</font>
<a name="l00830"></a><a class="code" href="classNL3D_1_1CTessFace.html#a8">00830</a> <font class="keywordtype">void</font> CTessFace::releaseTileMaterial()
00831 {
00832 <font class="comment">// Hence, must release the tile. TileUvBase is differnet for each of leaves.</font>
00833 <a class="code" href="classNL3D_1_1CTessFace.html#z822_1">deleteTileUv</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
00834
00835 <a class="code" href="debug_8h.html#a6">nlassert</a>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> || <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->Level<=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel);
00836 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> && <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->Level==<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel && <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->TileMaterial!=NULL)
00837 {
00838 <font class="comment">// Do not release Uvs, since neighbor need it...</font>
00839 <font class="comment">// But release faces.</font>
00840 <a class="code" href="classNL3D_1_1CTessFace.html#z822_7">deleteTileFaces</a>();
00841 <font class="comment">// Do not release TileMaterial, since neighbor need it...</font>
00842 <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>= NULL;
00843 }
00844 <font class="keywordflow">else</font>
00845 {
00846 <font class="comment">// release Uvs.</font>
00847 <a class="code" href="classNL3D_1_1CTessFace.html#z822_1">deleteTileUv</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>);
00848 <a class="code" href="classNL3D_1_1CTessFace.html#z822_1">deleteTileUv</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>);
00849
00850 <font class="comment">// After, release Tile faces.</font>
00851 <a class="code" href="classNL3D_1_1CTessFace.html#z822_7">deleteTileFaces</a>();
00852
00853 <font class="comment">// Release the tile lightmap part. Do it before removeTileMaterialFromRenderList().</font>
00854 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->releaseTileLightMap(<a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>->TileS, <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>->TileT);
00855
00856 <font class="comment">// Remove this material from the render list. DO it before deletion of course :).</font>
00857 <font class="comment">// NB: TileS/TileT still valid.</font>
00858 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->removeTileMaterialFromRenderList(<a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>);
00859
00860 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->deleteTileMaterial(<a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>);
00861 <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>= NULL;
00862 }
00863 }
00864
00865
00866
00867 <font class="comment">// ***************************************************************************</font>
<a name="l00868"></a><a class="code" href="classNL3D_1_1CTessFace.html#c9">00868</a> <font class="keywordtype">void</font> CTessFace::updateNearFarVertices()
00869 {
00870 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a> && <a class="code" href="classNL3D_1_1CTessFace.html#m0">FVBase</a>);
00871 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a> && <a class="code" href="classNL3D_1_1CTessFace.html#m1">FVLeft</a>);
00872 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a> && <a class="code" href="classNL3D_1_1CTessFace.html#m2">FVRight</a>);
00873
00874 <a class="code" href="classNL3D_1_1CTessFace.html#m0">FVBase</a>->Src= <a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>;
00875 <a class="code" href="classNL3D_1_1CTessFace.html#m1">FVLeft</a>->Src= <a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>;
00876 <a class="code" href="classNL3D_1_1CTessFace.html#m2">FVRight</a>->Src= <a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>;
00877 <a class="code" href="classNL3D_1_1CTessFace.html#m0">FVBase</a>->PCoord= <a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>;
00878 <a class="code" href="classNL3D_1_1CTessFace.html#m1">FVLeft</a>->PCoord= <a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>;
00879 <a class="code" href="classNL3D_1_1CTessFace.html#m2">FVRight</a>->PCoord= <a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>;
00880
00881 <font class="comment">// Update VB for far vertices (if needed)</font>
00882 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkFillVertexVBFar(<a class="code" href="classNL3D_1_1CTessFace.html#m0">FVBase</a>);
00883 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkFillVertexVBFar(<a class="code" href="classNL3D_1_1CTessFace.html#m1">FVLeft</a>);
00884 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkFillVertexVBFar(<a class="code" href="classNL3D_1_1CTessFace.html#m2">FVRight</a>);
00885
00886 <font class="comment">// Near Vertices update (Src only).</font>
00887 <font class="keywordflow">for</font>(sint i=0; i<<a class="code" href="landscape__def_8h.html#a1">NL3D_MAX_TILE_FACE</a>; i++)
00888 {
00889 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i])
00890 {
00891 <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>]->Src= <a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>;
00892 <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>]->Src= <a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>;
00893 <a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>]->Src= <a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>;
00894
00895 <font class="comment">// Update VB for near vertices (if needed)</font>
00896 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkFillVertexVBNear(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>]);
00897 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkFillVertexVBNear(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>]);
00898 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkFillVertexVBNear(<a class="code" href="classNL3D_1_1CTessFace.html#z820_3">TileFaces</a>[i]->V[<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>]);
00899 }
00900 }
00901
00902 }
00903
00904
00905 <font class="comment">// ***************************************************************************</font>
<a name="l00906"></a><a class="code" href="classNL3D_1_1CTessFace.html#c3">00906</a> <font class="keywordtype">void</font> CTessFace::splitRectangular(<font class="keywordtype">bool</font> propagateSplit)
00907 {
00908 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *f0= <font class="keyword">this</font>;
00909 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *f1= <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>;
00910 <font class="comment">// Rectangular case: FBase must exist.</font>
00911 <a class="code" href="debug_8h.html#a6">nlassert</a>(f1);
00912
00913 <font class="comment">// In rectangular case, we split at the same time this and FBase (f0 and f1).</font>
00914
00915
00916 <font class="comment">/*</font>
00917 <font class="comment"> Tesselation is:</font>
00918 <font class="comment"> </font>
00919 <font class="comment"> lt rt lt top rt</font>
00920 <font class="comment"> --------------------- ---------------------</font>
00921 <font class="comment"> |---- | |\ |\ |</font>
00922 <font class="comment"> | ---- f1 | | \ f1l | \ f1r |</font>
00923 <font class="comment"> | ---- | --> | \ | \ |</font>
00924 <font class="comment"> | f0 ---- | | f0r \ | f0l \ |</font>
00925 <font class="comment"> | ---| | \| \|</font>
00926 <font class="comment"> --------------------- ---------------------</font>
00927 <font class="comment"> lb rb lb bot rb</font>
00928 <font class="comment"></font>
00929 <font class="comment"> Why? For symetry and bind/split reasons: FBase->SonLeft->VBase is always the good vertex to take </font>
00930 <font class="comment"> (see vertex binding).</font>
00931 <font class="comment"> */</font>
00932 CParamCoord pclt= f1->PVLeft;
00933 CParamCoord pclb= f0->PVBase;
00934 CParamCoord pcrt= f1->PVBase;
00935 CParamCoord pcrb= f1->PVRight;
00936 CTessVertex *vlt= f1->VLeft;
00937 CTessVertex *vlb= f0->VBase;
00938 CTessVertex *vrt= f1->VBase;
00939 CTessVertex *vrb= f1->VRight;
00940
00941 CTessFarVertex *farvlt= f1->FVLeft;
00942 CTessFarVertex *farvlb= f0->FVBase;
00943 CTessFarVertex *farvrt= f1->FVBase;
00944 CTessFarVertex *farvrb= f1->FVRight;
00945
00946
00947 <font class="comment">// 1. create new vertices.</font>
00948 <font class="comment">//------------------------</font>
00949
00950 <font class="comment">// Create splitted vertices.</font>
00951 CParamCoord pctop(f1->PVBase, f1->PVLeft);
00952 CParamCoord pcbot(f0->PVBase, f0->PVLeft);
00953 CTessVertex *vtop= NULL;
00954 CTessVertex *vbot= NULL;
00955 <font class="comment">// Compute top.</font>
00956 <font class="keywordflow">if</font>(f1->FLeft==NULL || f1->FLeft->isLeaf())
00957 {
00958 <font class="comment">// The base neighbor is a leaf or NULL. So must create the new vertex.</font>
00959 vtop= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessVertex();
00960
00961 <font class="comment">// Compute pos.</font>
00962 vtop->StartPos= (f1->VLeft->EndPos + f1->VBase->EndPos)/2;
00963 vtop->EndPos= f1->Patch->computeVertex(pctop.getS(), pctop.getT());
00964 <font class="comment">// Init Pos= InitialPos. Important in the case of enforced split.</font>
00965 vtop->Pos= vtop->StartPos;
00966
00967 <font class="comment">// For geomorph (VertexProgram or soft), compute MaxFaceSize and MaxNearLimit.</font>
00968 vtop->MaxFaceSize= f1->Size;
00969 vtop->MaxNearLimit= f1->computeNearLimit();
00970 }
00971 <font class="keywordflow">else</font>
00972 {
00973 <font class="comment">// Else, get from neighbor.</font>
00974 <font class="comment">// NB: since *FLeft is not a leaf, FBase->SonLeft!=NULL...</font>
00975 <font class="comment">// NB: this work with both rectangular and square triangles.</font>
00976 vtop= f1->FLeft->SonLeft->VBase;
00977
00978 <font class="comment">// For geomorph (VertexProgram or soft), compute MaxFaceSize and MaxNearLimit.</font>
00979 vtop->MaxFaceSize= max( vtop->MaxFaceSize, f1->Size);
00980 vtop->MaxNearLimit= max( vtop->MaxNearLimit, f1->computeNearLimit());
00981 }
00982 <font class="comment">// Compute bot.</font>
00983 <font class="keywordflow">if</font>(f0->FLeft==NULL || f0->FLeft->isLeaf())
00984 {
00985 <font class="comment">// The base neighbor is a leaf or NULL. So must create the new vertex.</font>
00986 vbot= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessVertex();
00987
00988 <font class="comment">// Compute pos.</font>
00989 vbot->StartPos= (f0->VLeft->EndPos + f0->VBase->EndPos)/2;
00990 vbot->EndPos= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->computeVertex(pcbot.getS(), pcbot.getT());
00991 <font class="comment">// Init Pos= InitialPos. Important in the case of enforced split.</font>
00992 vbot->Pos= vbot->StartPos;
00993
00994 <font class="comment">// For geomorph (VertexProgram or soft), compute MaxFaceSize and MaxNearLimit.</font>
00995 vbot->MaxFaceSize= f0->Size;
00996 vbot->MaxNearLimit= f0->computeNearLimit();
00997 }
00998 <font class="keywordflow">else</font>
00999 {
01000 <font class="comment">// Else, get from neighbor.</font>
01001 <font class="comment">// NB: since *FLeft is not a leaf, FBase->SonLeft!=NULL...</font>
01002 <font class="comment">// NB: this work with both rectangular and square triangles.</font>
01003 vbot= f0->FLeft->SonLeft->VBase;
01004
01005 <font class="comment">// For geomorph (VertexProgram or soft), compute MaxFaceSize and MaxNearLimit.</font>
01006 vbot->MaxFaceSize= max( vbot->MaxFaceSize, f0->Size);
01007 vbot->MaxNearLimit= max( vbot->MaxNearLimit, f0->computeNearLimit());
01008 }
01009
01010 <font class="comment">// In all case, must create new FarVertices, since rect split occurs on border!!</font>
01011 CTessFarVertex *farvtop= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessFarVertex();
01012 CTessFarVertex *farvbot= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessFarVertex();
01013 farvtop->Src= vtop;
01014 farvbot->Src= vbot;
01015 farvtop->PCoord= pctop;
01016 farvbot->PCoord= pcbot;
01017 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendFarVertexToRenderList(farvtop);
01018 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendFarVertexToRenderList(farvbot);
01019 <font class="comment">// May Allocate/Fill VB.</font>
01020 <font class="comment">// NB: vtop / vbot are well computed and ready for the fill in VB.</font>
01021 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkCreateVertexVBFar(farvtop);
01022 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkFillVertexVBFar(farvtop);
01023 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkCreateVertexVBFar(farvbot);
01024 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkFillVertexVBFar(farvbot);
01025
01026 <font class="comment">// For VertexProgram only, must refill the Far vertex of neighbor(s), </font>
01027 <font class="comment">// because MaxFaceSize, and MaxNearLimit may have change.</font>
01028 <font class="keywordflow">if</font>( CLandscapeGlobals::VertexProgramEnabled )
01029 {
01030 <font class="comment">// f0</font>
01031 <font class="keywordflow">if</font>( ! (f0->FLeft==NULL || f0->FLeft->isLeaf()) )
01032 f0->FLeft->Patch->checkFillVertexVBFar(f0->FLeft->SonLeft->FVBase);
01033 <font class="comment">// f1</font>
01034 <font class="keywordflow">if</font>( ! (f1->FLeft==NULL || f1->FLeft->isLeaf()) )
01035 f1->FLeft->Patch->checkFillVertexVBFar(f1->FLeft->SonLeft->FVBase);
01036 }
01037
01038
01039 <font class="comment">// 2. Create sons, and update links.</font>
01040 <font class="comment">//----------------------------------</font>
01041
01042 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *f0l, *f0r;
01043 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *f1l, *f1r;
01044
01045 <font class="comment">// create and bind Sons.</font>
01046 f0l= f0->SonLeft= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessFace();
01047 f0r= f0->SonRight= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessFace();
01048 f1l= f1->SonLeft= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessFace();
01049 f1r= f1->SonRight= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessFace();
01050
01051 <font class="comment">// subdivision left.</font>
01052 f0l->Patch= f0->Patch;
01053 f0l->Father= f0;
01054 f0l->Level= f0->Level+1;
01055 f0l->Size= f0->Size*0.5f;
01056 <font class="comment">// subdivision right.</font>
01057 f0r->Patch= f0->Patch;
01058 f0r->Father= f0;
01059 f0r->Level= f0->Level+1;
01060 f0r->Size= f0->Size*0.5f;
01061 <font class="comment">// subdivision left.</font>
01062 f1l->Patch= f1->Patch;
01063 f1l->Father= f1;
01064 f1l->Level= f1->Level+1;
01065 f1l->Size= f1->Size*0.5f;
01066 <font class="comment">// subdivision right.</font>
01067 f1r->Patch= f1->Patch;
01068 f1r->Father= f1;
01069 f1r->Level= f1->Level+1;
01070 f1r->Size= f1->Size*0.5f;
01071
01072 <font class="comment">// Patch coordinates.</font>
01073 f0r->PVRight= pclt;
01074 f0r->PVBase= pclb;
01075 f0r->PVLeft= pcbot;
01076 f1l->PVBase= pctop;
01077 f1l->PVLeft= f0r->PVRight;
01078 f1l->PVRight= f0r->PVLeft;
01079
01080 f0l->PVRight= pctop;
01081 f0l->PVBase= pcbot;
01082 f0l->PVLeft= pcrb;
01083 f1r->PVBase= pcrt;
01084 f1r->PVLeft= f0l->PVRight;
01085 f1r->PVRight= f0l->PVLeft;
01086
01087 <font class="comment">// link existing vertex.</font>
01088 f0r->VRight= vlt;
01089 f0r->VBase= vlb;
01090 f0r->VLeft= vbot;
01091 f1l->VBase= vtop;
01092 f1l->VLeft= f0r->VRight;
01093 f1l->VRight= f0r->VLeft;
01094
01095 f0l->VRight= vtop;
01096 f0l->VBase= vbot;
01097 f0l->VLeft= vrb;
01098 f1r->VBase= vrt;
01099 f1r->VLeft= f0l->VRight;
01100 f1r->VRight= f0l->VLeft;
01101
01102 <font class="comment">// link Far vertices.</font>
01103 f0r->FVRight= farvlt;
01104 f0r->FVBase= farvlb;
01105 f0r->FVLeft= farvbot;
01106 f1l->FVBase= farvtop;
01107 f1l->FVLeft= f0r->FVRight;
01108 f1l->FVRight= f0r->FVLeft;
01109
01110 f0l->FVRight= farvtop;
01111 f0l->FVBase= farvbot;
01112 f0l->FVLeft= farvrb;
01113 f1r->FVBase= farvrt;
01114 f1r->FVLeft= f0l->FVRight;
01115 f1r->FVRight= f0l->FVLeft;
01116
01117 <font class="comment">// link neigbhor faces.</font>
01118 f0r->FBase= f1l;
01119 f1l->FBase= f0r;
01120 f0l->FBase= f1r;
01121 f1r->FBase= f0l;
01122 f1l->FRight= f0l;
01123 f0l->FRight= f1l;
01124 f0r->FRight= f0->FRight;
01125 <font class="keywordflow">if</font>(f0->FRight)
01126 f0->FRight->changeNeighbor(f0, f0r);
01127 f1r->FRight= f1->FRight;
01128 <font class="keywordflow">if</font>(f1->FRight)
01129 f1->FRight->changeNeighbor(f1, f1r);
01130 <font class="comment">// 4 links (all FLeft sons ) are stil invalid here.</font>
01131 f0l->FLeft= NULL;
01132 f0r->FLeft= NULL;
01133 f1l->FLeft= NULL;
01134 f1r->FLeft= NULL;
01135
01136 <font class="comment">// Neigbors pointers of undetermined splitted face are not changed. Must Doesn't change this. </font>
01137 <font class="comment">// Used and Updated in section 5. ...</font>
01138
01139
01140 <font class="comment">// 3. Update Tile infos.</font>
01141 <font class="comment">//----------------------</font>
01142 <font class="comment">// There is no update tileinfo with rectangular patch, since tiles are always squares. (TileLimitLevel>SquareLimitLevel).</font>
01143
01144 <font class="comment">// NB: but must test update of tile info for neighboring, ie 2 faces around the splits.</font>
01145 <font class="comment">// For Vertex program only</font>
01146 <font class="keywordflow">if</font>( CLandscapeGlobals::VertexProgramEnabled )
01147 {
01148 <font class="comment">// if neighbor face splitted, and if 2 different patchs, we must update the Tile vertices</font>
01149 <font class="comment">// because MaxFaceSize and MaxNearLimit may have changed.</font>
01150 <font class="keywordflow">if</font>( f0->FLeft!=NULL && !f0->FLeft->isLeaf() && f0->FLeft->Patch!=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a> )
01151 {
01152 <font class="comment">// If neighbors sons at tile level, must update their Tile vertices.</font>
01153 <font class="keywordflow">if</font>( f0->FLeft->SonLeft->Level >= f0->FLeft->Patch->TileLimitLevel )
01154 {
01155 f0->FLeft->SonLeft->checkFillTileVB(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
01156 f0->FLeft->SonRight->checkFillTileVB(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
01157 }
01158 }
01159 <font class="comment">// idem for f1.</font>
01160 <font class="keywordflow">if</font>( f1->FLeft!=NULL && !f1->FLeft->isLeaf() && f1->FLeft->Patch!=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a> )
01161 {
01162 <font class="comment">// If neighbors sons at tile level, must update their Tile vertices.</font>
01163 <font class="keywordflow">if</font>( f1->FLeft->SonLeft->Level >= f1->FLeft->Patch->TileLimitLevel )
01164 {
01165 f1->FLeft->SonLeft->checkFillTileVB(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
01166 f1->FLeft->SonRight->checkFillTileVB(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
01167 }
01168 }
01169 }
01170
01171
01172 <font class="comment">// 4. Compute centers.</font>
01173 <font class="comment">//--------------------</font>
01174 f0r->computeSplitPoint();
01175 f0l->computeSplitPoint();
01176 f1r->computeSplitPoint();
01177 f1l->computeSplitPoint();
01178
01179
01180 <font class="comment">// 5. Propagate, or link sons of base.</font>
01181 <font class="comment">//------------------------------------</font>
01182 <font class="keywordflow">for</font>(sint i=0;i<2;i++)
01183 {
01184 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *f, *fl, *fr;
01185 <font class="comment">// TOP face.</font>
01186 <font class="keywordflow">if</font>(i==0)
01187 {
01188 f= f1;
01189 fl= f1l;
01190 fr= f1r;
01191 }
01192 <font class="comment">// then BOT face.</font>
01193 <font class="keywordflow">else</font>
01194 {
01195 f= f0;
01196 fl= f0l;
01197 fr= f0r;
01198 }
01199
01200 <font class="comment">// If current face and FBase has sons, just links.</font>
01201 <font class="keywordflow">if</font>(f->FLeft==NULL)
01202 {
01203 <font class="comment">// Just update sons neighbors.</font>
01204 fl->FLeft= NULL;
01205 fr->FLeft= NULL;
01206 }
01207 <font class="keywordflow">else</font> <font class="keywordflow">if</font>(!f->FLeft->isLeaf())
01208 {
01209 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *toLeft, *toRight;
01210 toLeft= f->FLeft->SonLeft;
01211 toRight= f->FLeft->SonRight;
01212 <font class="comment">// Cross connection of sons.</font>
01213 <font class="keywordflow">if</font>( !f->FLeft->isRectangular() )
01214 {
01215 <font class="comment">// Case neigbhor is square.</font>
01216 fl->FLeft= toLeft;
01217 fr->FLeft= toRight;
01218 toLeft->FRight= fl;
01219 toRight->FLeft= fr;
01220 }
01221 <font class="keywordflow">else</font>
01222 {
01223 <font class="comment">// Case neigbhor is rectangle.</font>
01224 fl->FLeft= toRight;
01225 fr->FLeft= toLeft;
01226 toLeft->FLeft= fr;
01227 toRight->FLeft= fl;
01228 }
01229 }
01230 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (propagateSplit)
01231 {
01232 <font class="comment">// Warning: at each iteration, the pointer of FLeft may change (because of split() which can change the neighbor </font>
01233 <font class="comment">// and so f).</font>
01234 <font class="keywordflow">while</font>(f->FLeft->isLeaf())
01235 f->FLeft->split();
01236
01237 <font class="comment">// There is a possible bug here (maybe easily patched). Sons may have be propagated splitted.</font>
01238 <font class="comment">// And problems may arise because this face hasn't yet good connectivity (especially for rectangles!! :) ).</font>
01239 <a class="code" href="debug_8h.html#a6">nlassert</a>(fl->isLeaf() && fr->isLeaf());
01240 }
01241 }
01242
01243
01244 <font class="comment">// 6. Must remove father from rdr list, and insert sons.</font>
01245 <font class="comment">//------------------------------------------------------</font>
01246 <font class="comment">// UGLY REFCOUNT SIDE EFFECT: do the append first.</font>
01247 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendFaceToRenderList(f0l);
01248 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendFaceToRenderList(f0r);
01249 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendFaceToRenderList(f1l);
01250 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendFaceToRenderList(f1r);
01251 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->removeFaceFromRenderList(f0);
01252 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->removeFaceFromRenderList(f1);
01253
01254
01255 <font class="comment">// 7. Update priority list.</font>
01256 <font class="comment">//------------------------------------------------------</font>
01257 <font class="comment">// Since we are freshly splitted, unlink from any list, and link to the MergePriorityList, because must look </font>
01258 <font class="comment">// now when should merge.</font>
01259 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->_MergePriorityList.insert(0, 0, f0);
01260 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->_MergePriorityList.insert(0, 0, f1);
01261
01262 <font class="comment">// Since we are split, no need to test father for merge, because it cannot!</font>
01263 <font class="keywordflow">if</font>(f0->Father)
01264 {
01265 <font class="comment">// remove father from any priority list.</font>
01266 f0->Father->unlinkInPList();
01267 }
01268 <font class="keywordflow">if</font>(f1->Father)
01269 {
01270 <font class="comment">// remove father from any priority list.</font>
01271 f1->Father->unlinkInPList();
01272 }
01273
01274 }
01275
01276
01277 <font class="comment">// ***************************************************************************</font>
<a name="l01278"></a><a class="code" href="classNL3D_1_1CTessFace.html#a11">01278</a> <font class="keywordtype">void</font> CTessFace::split(<font class="keywordtype">bool</font> propagateSplit)
01279 {
01280
01281 <font class="comment">// 0. Some easy ending.</font>
01282 <font class="comment">//---------------------</font>
01283 <font class="comment">// Already splitted??</font>
01284 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
01285 <font class="keywordflow">return</font>;
01286 <font class="comment">// Don't do this!!!</font>
01287 <font class="comment">//if(Level>=LS_MAXLEVEL)</font>
01288 <font class="comment">// return;</font>
01289 <font class="comment">// since split() may reach LS_MAXLEVEL, but enforce splits which outpass this stage!!</font>
01290
01291 <a class="code" href="landscape__profile_8h.html#a2">NL3D_PROFILE_LAND_ADD</a>(<a class="code" href="namespaceNL3D.html#a80">ProfNSplits</a>, 1);
01292
01293
01294 <font class="comment">// Special Rectangular case.</font>
01295 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>())
01296 {
01297 <a class="code" href="classNL3D_1_1CTessFace.html#c3">splitRectangular</a>(propagateSplit);
01298 <font class="keywordflow">return</font>;
01299 }
01300
01301 <font class="comment">// 1. Create sons, and update links.</font>
01302 <font class="comment">//----------------------------------</font>
01303
01304 <font class="comment">// create and bind Sons.</font>
01305 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessFace();
01306 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessFace();
01307
01308 <font class="comment">// subdivision left.</font>
01309 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->Patch= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>;
01310 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->Father= <font class="keyword">this</font>;
01311 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->Level= <a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a>+1;
01312 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->Size= <a class="code" href="classNL3D_1_1CTessFace.html#z821_1">Size</a>*0.5f;
01313 <font class="comment">// subdivision right.</font>
01314 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->Patch= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>;
01315 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->Father= <font class="keyword">this</font>;
01316 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->Level= <a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a>+1;
01317 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->Size= <a class="code" href="classNL3D_1_1CTessFace.html#z821_1">Size</a>*0.5f;
01318
01319
01320 <font class="comment">// link Left Son.</font>
01321 <font class="comment">// link neighbor face.</font>
01322 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FBase= <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>;
01323 <font class="keywordflow">if</font>(FLeft) <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->changeNeighbor(<font class="keyword">this</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>);
01324 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FLeft= <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>;
01325 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FRight= NULL; <font class="comment">// Temporary. updated later.</font>
01326 <font class="comment">// link neighbor vertex.</font>
01327 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VLeft= <a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>;
01328 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VRight= <a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>;
01329 <font class="comment">// link neighbor Far vertex.</font>
01330 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FVLeft= <a class="code" href="classNL3D_1_1CTessFace.html#m0">FVBase</a>;
01331 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FVRight= <a class="code" href="classNL3D_1_1CTessFace.html#m1">FVLeft</a>;
01332 <font class="comment">// Patch coordinates.</font>
01333 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->PVBase= CParamCoord(<a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>);
01334 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->PVLeft= <a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>;
01335 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->PVRight= <a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>;
01336
01337 <font class="comment">// linkRight Son.</font>
01338 <font class="comment">// link neighbor face.</font>
01339 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->FBase= <a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>;
01340 <font class="keywordflow">if</font>(FRight) <a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>->changeNeighbor(<font class="keyword">this</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>);
01341 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->FLeft= NULL; <font class="comment">// Temporary. updated later.</font>
01342 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->FRight= <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>;
01343 <font class="comment">// link neighbor vertex.</font>
01344 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->VLeft= <a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>;
01345 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->VRight= <a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>;
01346 <font class="comment">// link neighbor Far vertex.</font>
01347 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->FVLeft= <a class="code" href="classNL3D_1_1CTessFace.html#m2">FVRight</a>;
01348 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->FVRight= <a class="code" href="classNL3D_1_1CTessFace.html#m0">FVBase</a>;
01349 <font class="comment">// Patch coordinates.</font>
01350 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->PVBase= CParamCoord(<a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>);
01351 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->PVLeft= <a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>;
01352 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->PVRight= <a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>;
01353
01354
01355 <font class="comment">// FBase->FBase==this. Must Doesn't change this. Used and Updated in section 5. ...</font>
01356
01357
01358 <font class="comment">// 2. Update/Create Vertex infos.</font>
01359 <font class="comment">//-------------------------------</font>
01360
01361 <font class="comment">// Must create/link *->VBase.</font>
01362 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>==NULL || <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf())
01363 {
01364 <font class="comment">// The base neighbor is a leaf or NULL. So must create the new vertex.</font>
01365 CTessVertex *newVertex= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessVertex();
01366 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->VBase= newVertex;
01367 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase= newVertex;
01368
01369 <font class="comment">// Compute pos.</font>
01370 newVertex->StartPos= (<a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>->EndPos + <a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>->EndPos)/2;
01371 newVertex->EndPos= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->computeVertex(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->PVBase.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->PVBase.getT());
01372
01373 <font class="comment">// Init Pos= InitialPos. Important in the case of enforced split.</font>
01374 newVertex->Pos= newVertex->StartPos;
01375
01376 <font class="comment">// For geomorph (VertexProgram or soft), compute MaxFaceSize and MaxNearLimit.</font>
01377 newVertex->MaxFaceSize= <a class="code" href="classNL3D_1_1CTessFace.html#z821_1">Size</a>;
01378 newVertex->MaxNearLimit= <a class="code" href="classNL3D_1_1CTessFace.html#a9">computeNearLimit</a>();
01379 }
01380 <font class="keywordflow">else</font>
01381 {
01382 <font class="comment">// Else, get from neighbor.</font>
01383 <font class="comment">// NB: since *FBase is not a leaf, FBase->SonLeft!=NULL...</font>
01384 <font class="comment">// NB: this work with both rectangular and square triangles (see splitRectangular()).</font>
01385 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->VBase= <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft->VBase;
01386 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase= <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft->VBase;
01387
01388 <font class="comment">// For geomorph (VertexProgram or soft), compute MaxFaceSize and MaxNearLimit.</font>
01389 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase->MaxFaceSize= max( <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase->MaxFaceSize, <a class="code" href="classNL3D_1_1CTessFace.html#z821_1">Size</a>);
01390 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase->MaxNearLimit= max( <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase->MaxNearLimit, <a class="code" href="classNL3D_1_1CTessFace.html#a9">computeNearLimit</a>());
01391 }
01392
01393
01394 <font class="comment">// Must create/link *->FVBase.</font>
01395 <font class="comment">// HERE, we must create a FarVertex too if the neighbor is not of the same patch as me.</font>
01396 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>==NULL || <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf() || <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->Patch!=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>)
01397 {
01398 <font class="comment">// The base neighbor is a leaf or NULL. So must create the new far vertex.</font>
01399 CTessFarVertex *newFar= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessFarVertex();
01400 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->FVBase= newFar;
01401 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FVBase= newFar;
01402
01403 <font class="comment">// Compute.</font>
01404 newFar->Src= <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase;
01405 newFar->PCoord= <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->PVBase;
01406
01407 <font class="comment">// Append.</font>
01408 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendFarVertexToRenderList(newFar);
01409
01410 <font class="comment">// May Allocate/Fill VB.</font>
01411 <font class="comment">// NB: SonLeft->VBase->Pos is well computed and ready for the fill in VB.</font>
01412 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkCreateVertexVBFar(newFar);
01413 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkFillVertexVBFar(newFar);
01414
01415 <font class="comment">// For VertexProgram only, must refill the Far vertex of neighbor, </font>
01416 <font class="comment">// because MaxFaceSize, and MaxNearLimit may have change.</font>
01417 <font class="keywordflow">if</font>( CLandscapeGlobals::VertexProgramEnabled && ! (<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>==NULL || <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf()) )
01418 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->Patch->checkFillVertexVBFar(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft->FVBase);
01419 }
01420 <font class="keywordflow">else</font>
01421 {
01422 <font class="comment">// Else, get from neighbor.</font>
01423 <font class="comment">// NB: since *FBase is not a leaf, FBase->SonLeft!=NULL...</font>
01424 <font class="comment">// NB: this work with both rectangular and square triangles (see splitRectangular()).</font>
01425 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->FVBase= <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft->FVBase;
01426 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FVBase= <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft->FVBase;
01427
01428 <font class="comment">// NB For VertexProgram only: no need to refill the Far vertex of neighbor, because neighbor is of same Patch</font>
01429 <font class="comment">// So MaxNearLimit and MaxFaceSize should be the same.</font>
01430 }
01431
01432
01433 <font class="comment">// 3. Update Tile infos.</font>
01434 <font class="comment">//----------------------</font>
01435 <font class="comment">// NB: must do it before appendFaceToRenderList().</font>
01436 <font class="comment">// NB: must do it after compute of SonLeft->VBase->Pos for good filling in VBuffer.</font>
01437 <font class="comment">// There is no problem with rectangular patch, since tiles are always squares.</font>
01438 <font class="comment">// If new tile ....</font>
01439 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->Level==<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel)
01440 {
01441 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->computeTileMaterial();
01442 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->computeTileMaterial();
01443 }
01444 <font class="comment">// else Tile herit.</font>
01445 <font class="keywordflow">else</font> <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->Level > <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel)
01446 {
01447 <a class="code" href="classNL3D_1_1CTessFace.html#c5">heritTileMaterial</a>();
01448 }
01449
01450 <font class="comment">// For Vertex program only</font>
01451 <font class="keywordflow">if</font>( CLandscapeGlobals::VertexProgramEnabled )
01452 {
01453 <font class="comment">// if neighbor face splitted, and if 2 different patchs, we must update the Tile vertices</font>
01454 <font class="comment">// because MaxFaceSize and MaxNearLimit may have changed.</font>
01455 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>!=NULL && !<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf() && <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->Patch!=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a> )
01456 {
01457 <font class="comment">// If neighbors sons at tile level, must update their Tile vertices.</font>
01458 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft->Level >= <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->Patch->TileLimitLevel )
01459 {
01460 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft->checkFillTileVB(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
01461 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonRight->checkFillTileVB(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
01462 }
01463 }
01464 }
01465
01466
01467 <font class="comment">// 4. Compute centers.</font>
01468 <font class="comment">//--------------------</font>
01469 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->computeSplitPoint();
01470 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->computeSplitPoint();
01471
01472
01473 <font class="comment">// 5. Propagate, or link sons of base.</font>
01474 <font class="comment">//------------------------------------</font>
01475 <font class="comment">// If current face and FBase has sons, just links.</font>
01476 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>==NULL)
01477 {
01478 <font class="comment">// Just update sons neighbors.</font>
01479 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FRight= NULL;
01480 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->FLeft= NULL;
01481 }
01482 <font class="keywordflow">else</font> <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf())
01483 {
01484 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *toLeft, *toRight;
01485 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *fl, *fr;
01486 fl= <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>;
01487 fr= <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>;
01488 toLeft= <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft;
01489 toRight= <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonRight;
01490 <font class="comment">// Cross connection of sons.</font>
01491 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isRectangular())
01492 {
01493 <font class="comment">// Case neigbhor is square.</font>
01494 fl->FRight= toRight;
01495 fr->FLeft= toLeft;
01496 toLeft->FRight= fr;
01497 toRight->FLeft= fl;
01498 }
01499 <font class="keywordflow">else</font>
01500 {
01501 <font class="comment">// Case neigbhor is rectangular.</font>
01502 fl->FRight= toLeft;
01503 fr->FLeft= toRight;
01504 toLeft->FLeft= fl;
01505 toRight->FLeft= fr;
01506 }
01507 }
01508 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (propagateSplit)
01509 {
01510 <font class="comment">// Warning: at each iteration, the pointer of FBase may change (because of split() which can change the neighbor </font>
01511 <font class="comment">// and so "this").</font>
01512 <font class="keywordflow">while</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf())
01513 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->split();
01514
01515 <font class="comment">// There is a possible bug here (maybe easily patched). Sons may have be propagated splitted.</font>
01516 <font class="comment">// And problems may arise because this face hasn't yet good connectivity.</font>
01517 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->isLeaf() && <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->isLeaf());
01518 }
01519
01520
01521 <font class="comment">// 6. Must remove father from rdr list, and insert sons.</font>
01522 <font class="comment">//------------------------------------------------------</font>
01523 <font class="comment">// UGLY REFCOUNT SIDE EFFECT: do the append first.</font>
01524 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendFaceToRenderList(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>);
01525 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendFaceToRenderList(<a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>);
01526 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->removeFaceFromRenderList(<font class="keyword">this</font>);
01527
01528
01529 <font class="comment">// 7. Update priority list.</font>
01530 <font class="comment">//------------------------------------------------------</font>
01531 <font class="comment">// Since we are freshly splitted, unlink from any list, and link to the MergePriorityList, because must look </font>
01532 <font class="comment">// now when should merge.</font>
01533 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->_MergePriorityList.insert(0, 0, <font class="keyword">this</font>);
01534
01535 <font class="comment">// Since we are split, no need to test father for merge, because it cannot!</font>
01536 <font class="keywordflow">if</font>(Father)
01537 {
01538 <font class="comment">// remove father from any priority list.</font>
01539 <a class="code" href="classNL3D_1_1CTessFace.html#z819_7">Father</a>->unlinkInPList();
01540 }
01541 }
01542
01543 <font class="comment">// ***************************************************************************</font>
<a name="l01544"></a><a class="code" href="classNL3D_1_1CTessFace.html#c2">01544</a> <font class="keywordtype">bool</font> CTessFace::canMerge(<font class="keywordtype">bool</font> testEm)
01545 {
01546 <font class="keywordflow">if</font>(<font class="keyword">this</font>== &<a class="code" href="classNL3D_1_1CTessFace.html#r0">CantMergeFace</a>)
01547 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01548
01549 <a class="code" href="debug_8h.html#a6">nlassert</a>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>());
01550
01551 <font class="comment">// Test diamond config (sons must be leaves).</font>
01552 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->isLeaf())
01553 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01554 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->isLeaf())
01555 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01556 <font class="comment">// If Errormetric must be considered for this test.</font>
01557 <font class="keywordflow">if</font>(testEm)
01558 {
01559 <a class="code" href="classNL3D_1_1CTessFace.html#a10">updateErrorMetric</a>();
01560 <font class="keywordtype">float</font> ps2= <a class="code" href="classNL3D_1_1CTessFace.html#z821_3">ErrorMetric</a>;
01561 ps2*= CLandscapeGlobals::OORefineThreshold;
01562 <font class="keywordflow">if</font>(ps2>=1.0f)
01563 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01564 }
01565
01566 <font class="comment">// Then test neighbors.</font>
01567 <a class="code" href="classNL3D_1_1CTessFace.html#z819_14">RecursMarkCanMerge</a>= <font class="keyword">true</font>;
01568 <font class="keywordtype">bool</font> ok= <font class="keyword">true</font>;
01569 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>())
01570 {
01571 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> && !<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->RecursMarkCanMerge)
01572 {
01573 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->canMerge(testEm))
01574 ok= <font class="keyword">false</font>;
01575 }
01576 }
01577 <font class="keywordflow">else</font>
01578 {
01579 <font class="comment">// Rectangular case. May have a longer propagation...</font>
01580 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> && !<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->RecursMarkCanMerge)
01581 {
01582 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->canMerge(testEm))
01583 ok= <font class="keyword">false</font>;
01584 }
01585 <font class="keywordflow">if</font>(ok && <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a> && !<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->RecursMarkCanMerge)
01586 {
01587 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->canMerge(testEm))
01588 ok= <font class="keyword">false</font>;
01589 }
01590 }
01591 <font class="comment">// Must not return false in preceding tests, because must set RecursMarkCanMerge to false.</font>
01592 <a class="code" href="classNL3D_1_1CTessFace.html#z819_14">RecursMarkCanMerge</a>= <font class="keyword">false</font>;
01593
01594 <font class="keywordflow">return</font> ok;
01595 }
01596
01597
01598 <font class="comment">// ***************************************************************************</font>
<a name="l01599"></a><a class="code" href="classNL3D_1_1CTessFace.html#c4">01599</a> <font class="keywordtype">void</font> CTessFace::doMerge()
01600 {
01601 <font class="comment">// Assume that canMerge() return true.</font>
01602 <font class="comment">// And Assume that !isLeaf().</font>
01603 <a class="code" href="debug_8h.html#a6">nlassert</a>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>());
01604
01605 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>())
01606 {
01607 <font class="comment">// 1. Let's merge vertex.</font>
01608 <font class="comment">//-----------------------</font>
01609 <font class="comment">// Delete vertex, only if not already done by the neighbor (ie neighbor not already merged to a leaf).</font>
01610 <font class="comment">// NB: this work even if neigbor is rectnagular.</font>
01611 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> || !<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf())
01612 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->deleteTessVertex(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase);
01613
01614 <font class="comment">// Delete Far Vertex. Idem, but test too if != patch...</font>
01615 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> || !<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf() || <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->Patch!=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>)
01616 {
01617 <font class="comment">// May delete this vertex from VB.</font>
01618 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkDeleteVertexVBFar(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FVBase);
01619
01620 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->removeFarVertexFromRenderList(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FVBase);
01621 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->deleteTessFarVertex(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FVBase);
01622 }
01623
01624
01625 <font class="comment">// 2. Must remove sons from rdr list, and insert father.</font>
01626 <font class="comment">//------------------------------------------------------</font>
01627 <font class="comment">// Must do it BEFORE the TileFaces are released.</font>
01628 <font class="comment">// UGLY REFCOUNT SIDE EFFECT: do the append first.</font>
01629 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendFaceToRenderList(<font class="keyword">this</font>);
01630 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->removeFaceFromRenderList(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>);
01631 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->removeFaceFromRenderList(<a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>);
01632
01633
01634 <font class="comment">// 3. Let's merge Uv.</font>
01635 <font class="comment">//-------------------</font>
01636 <font class="comment">// Delete Uv.</font>
01637 <font class="comment">// Must do it for this and FBase separately, since they may not have same tile level (if != patch).</font>
01638 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->Level== <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel)
01639 {
01640 <font class="comment">// Square patch assumption: the sons are not of the same TileId/Patch.</font>
01641 <a class="code" href="debug_8h.html#a6">nlassert</a>(!<a class="code" href="classNL3D_1_1CTessFace.html#f0">sameTile</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>));
01642 <font class="comment">// release tiles: NearVertices, TileFaces, and TileMaterial.</font>
01643 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->releaseTileMaterial();
01644 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->releaseTileMaterial();
01645 }
01646 <font class="keywordflow">else</font> <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->Level > <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel)
01647 {
01648 <font class="comment">// Delete Uv, only if not already done by the neighbor (ie neighbor not already merged to a leaf).</font>
01649 <font class="comment">// But Always delete if neighbor exist and has not same tile as me.</font>
01650 <font class="comment">// NB: this work with rectangular neigbor patch, since sameTile() will return false if different patch.</font>
01651 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> || !<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf() || !<a class="code" href="classNL3D_1_1CTessFace.html#f0">sameTile</a>(<font class="keyword">this</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>))
01652 {
01653 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->deleteTileUv(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
01654 }
01655 <font class="comment">// In all case, must delete the tilefaces of those face.</font>
01656 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->deleteTileFaces();
01657 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->deleteTileFaces();
01658 }
01659
01660
01661 <font class="comment">// 4. Let's merge Face.</font>
01662 <font class="comment">//-------------------</font>
01663 <font class="comment">// Change father 's neighbor pointers.</font>
01664 <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>= <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FBase;
01665 <font class="keywordflow">if</font>(FLeft) <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->changeNeighbor(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>, <font class="keyword">this</font>);
01666 <a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>= <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->FBase;
01667 <font class="keywordflow">if</font>(FRight) <a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>->changeNeighbor(<a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>, <font class="keyword">this</font>);
01668 <font class="comment">// delete sons.</font>
01669 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->deleteTessFace(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>);
01670 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->deleteTessFace(<a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>);
01671 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>=NULL;
01672 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>=NULL;
01673
01674 <font class="comment">// If not already done, merge the neighbor.</font>
01675 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>!=NULL && !<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf())
01676 {
01677 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->doMerge();
01678 }
01679
01680 }
01681 <font class="keywordflow">else</font>
01682 {
01683 <font class="comment">// Rectangular case.</font>
01684 <font class="comment">// Since minimum Order is 2, Sons of rectangular face are NEVER at TileLimitLevel. => no Uv merge to do.</font>
01685 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->Level< <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel);
01686 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>);
01687
01688 <font class="comment">// 1. Let's merge vertex.</font>
01689 <font class="comment">//-----------------------</font>
01690 <font class="comment">// Delete vertex, only if not already done by the neighbor (ie neighbor not already merged to a leaf).</font>
01691 <font class="comment">// NB: this work even if neigbor is rectangular (see tesselation rules in splitRectangular()).</font>
01692 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a> || !<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->isLeaf())
01693 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->deleteTessVertex(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase);
01694
01695 <font class="comment">// Delete Far Vertex. Rect patch: neightb must be of a != pathc as me => must delete FarVertex.</font>
01696 <a class="code" href="debug_8h.html#a6">nlassert</a>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a> || <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->Patch!=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>);
01697 <font class="comment">// May delete this vertex from VB.</font>
01698 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->checkDeleteVertexVBFar(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FVBase);
01699
01700 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->removeFarVertexFromRenderList(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FVBase);
01701 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->deleteTessFarVertex(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FVBase);
01702
01703
01704 <font class="comment">// 2. Must remove sons from rdr list, and insert father.</font>
01705 <font class="comment">//------------------------------------------------------</font>
01706 <font class="comment">// UGLY REFCOUNT SIDE EFFECT: do the append first.</font>
01707 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendFaceToRenderList(<font class="keyword">this</font>);
01708 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->removeFaceFromRenderList(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>);
01709 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->removeFaceFromRenderList(<a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>);
01710
01711
01712 <font class="comment">// 3. Let's merge Face.</font>
01713 <font class="comment">//-------------------</font>
01714 <font class="comment">// Change father 's neighbor pointers (see splitRectangular()).</font>
01715 <a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>= <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->FRight;
01716 <font class="keywordflow">if</font>(FRight) <a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>->changeNeighbor(<a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>, <font class="keyword">this</font>);
01717 <font class="comment">// delete sons.</font>
01718 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->deleteTessFace(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>);
01719 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->deleteTessFace(<a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>);
01720 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>=NULL;
01721 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>=NULL;
01722
01723 <font class="comment">// First, do it for my rectangular co-worker FBase (if not already done).</font>
01724 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf())
01725 {
01726 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->doMerge();
01727 }
01728 <font class="comment">// If not already done, merge the neighbor.</font>
01729 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>!=NULL && !<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->isLeaf())
01730 {
01731 <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->doMerge();
01732 }
01733 }
01734
01735
01736 <font class="comment">// Update priority list.</font>
01737 <font class="comment">//------------------------------------------------------</font>
01738 <font class="comment">// Since we are freshly merged, unlink from any list, and link to the SplitPriorityList, because must look </font>
01739 <font class="comment">// now when we should split again.</font>
01740 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->_SplitPriorityList.insert(0, 0, <font class="keyword">this</font>);
01741
01742 <font class="comment">// since we are now merged maybe re-insert father in priority list.</font>
01743 <font class="keywordflow">if</font>(Father)
01744 {
01745 <a class="code" href="debug_8h.html#a6">nlassert</a>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_7">Father</a>->isLeaf());
01746 <font class="comment">// If sons of father are both leaves (ie this, and the other (complexe case if rectangle) )</font>
01747 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CTessFace.html#z819_7">Father</a>->SonLeft->isLeaf() && <a class="code" href="classNL3D_1_1CTessFace.html#z819_7">Father</a>->SonRight->isLeaf() )
01748 {
01749 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->_MergePriorityList.insert(0, 0, <a class="code" href="classNL3D_1_1CTessFace.html#z819_7">Father</a>);
01750 }
01751 }
01752
01753 }
01754
01755
01756 <font class="comment">// ***************************************************************************</font>
<a name="l01757"></a><a class="code" href="classNL3D_1_1CTessFace.html#a12">01757</a> <font class="keywordtype">bool</font> CTessFace::merge()
01758 {
01759 <font class="comment">// Must not be a leaf.</font>
01760 <a class="code" href="debug_8h.html#a6">nlassert</a>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>());
01761
01762 <font class="comment">// 0. Verify if merge is posible.</font>
01763 <font class="comment">//----------------------------</font>
01764 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#c2">canMerge</a>(<font class="keyword">false</font>))
01765 <font class="keywordflow">return</font> <font class="keyword">false</font>;
01766
01767 <a class="code" href="landscape__profile_8h.html#a2">NL3D_PROFILE_LAND_ADD</a>(<a class="code" href="namespaceNL3D.html#a81">ProfNMerges</a>, 1);
01768
01769 <font class="comment">// 1. Let's merge the face.</font>
01770 <font class="comment">//-----------------------</font>
01771 <font class="comment">// Propagation is done in doMerge().</font>
01772 <a class="code" href="classNL3D_1_1CTessFace.html#c4">doMerge</a>();
01773
01774 <font class="keywordflow">return</font> <font class="keyword">true</font>;
01775 }
01776
01777 <font class="comment">// ***************************************************************************</font>
<a name="l01778"></a><a class="code" href="classNL3D_1_1CTessFace.html#a13">01778</a> <font class="keywordtype">void</font> CTessFace::refineAll()
01779 {
01780 <a class="code" href="landscape__profile_8h.html#a2">NL3D_PROFILE_LAND_ADD</a>(<a class="code" href="namespaceNL3D.html#a77">ProfNRefineFaces</a>, 1);
01781 <a class="code" href="landscape__profile_8h.html#a2">NL3D_PROFILE_LAND_ADD</a>(<a class="code" href="namespaceNL3D.html#a79">ProfNRefineLeaves</a>, <a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>()?1:0);
01782
01783 <font class="comment">/*</font>
01784 <font class="comment"> if(ps<RefineThreshold), the face must be merged (ie have no leaves).</font>
01785 <font class="comment"> if(ps E [RefineThreshold, RefineTreshold*2]), the face must be splitted (ave leaves), and is geomorphed.</font>
01786 <font class="comment"> if(ps>RefineThreshold*2), the face is fully splitted/geomoprhed (tests reported on sons...).</font>
01787 <font class="comment"> */</font>
01788
01789 <font class="comment">// Test for Split or merge.</font>
01790 <font class="comment">//-----------------------</font>
01791 {
01792 <a class="code" href="landscape__profile_8h.html#a2">NL3D_PROFILE_LAND_ADD</a>(<a class="code" href="namespaceNL3D.html#a78">ProfNRefineComputeFaces</a>, 1);
01793
01794 <a class="code" href="classNL3D_1_1CTessFace.html#a10">updateErrorMetric</a>();
01795 <font class="keywordtype">float</font> ps=<a class="code" href="classNL3D_1_1CTessFace.html#z821_3">ErrorMetric</a>;
01796 ps*= CLandscapeGlobals::OORefineThreshold;
01797 <font class="comment">// 1.0f is the point of split().</font>
01798 <font class="comment">// 2.0f is the end of geomorph.</font>
01799
01800
01801 <font class="comment">// Test split/merge.</font>
01802 <font class="comment">//---------------------</font>
01803 <font class="comment">// If wanted, not already done, and limit not reached, split().</font>
01804 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
01805 {
01806 <font class="keywordflow">if</font>(ps>1.0f && <a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a>< (<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel + CLandscapeGlobals::TileMaxSubdivision) )
01807 <a class="code" href="classNL3D_1_1CTessFace.html#a11">split</a>();
01808 }
01809 <font class="keywordflow">else</font>
01810 {
01811 <font class="comment">// Else, if splitted, must merge (if not already the case).</font>
01812 <font class="keywordflow">if</font>(ps<1.0f)
01813 {
01814 <font class="comment">// Merge only if agree, and neighbors agree.</font>
01815 <font class="comment">// canMerge() test all the good thing: FBase==CantMergeFace, or this is rectangular etc...</font>
01816 <font class="comment">// The test is propagated to neighbors.</font>
01817 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#c2">canMerge</a>(<font class="keyword">true</font>))
01818 {
01819 <a class="code" href="classNL3D_1_1CTessFace.html#a12">merge</a>();
01820 }
01821 }
01822 }
01823 }
01824
01825 <font class="comment">// Recurs.</font>
01826 <font class="comment">//-----------------------</font>
01827 <font class="keywordflow">if</font>(SonLeft)
01828 {
01829 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->refineAll();
01830 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->refineAll();
01831 }
01832
01833 }
01834
01835
01836 <font class="comment">// ***************************************************************************</font>
01837 <font class="comment">// Some updateRefine***() Doc:</font>
01838
01839 <font class="comment">// Split or merge, and meaning of errorMetric:</font>
01840 <font class="comment">/*</font>
01841 <font class="comment"> if(errorMetric<RefineThreshold), the face must be merged (ie have no leaves).</font>
01842 <font class="comment"> if(errorMetric E [RefineThreshold, RefineTreshold*2]), the face must be splitted (ave leaves), and is geomorphed.</font>
01843 <font class="comment"> if(errorMetric>RefineThreshold*2), the face is fully splitted/geomoprhed.</font>
01844 <font class="comment">*/</font>
01845
01846
01847 <font class="comment">// Compute distNormalSplitMerge: distance from refineCenter to normal split/merge (ie without tile transition):</font>
01848 <font class="comment">/* </font>
01849 <font class="comment"> normal ErrorMetric formula is:</font>
01850 <font class="comment"> em = Size*OORefineThreshold/ dist^2; with dist == (SplitPoint - CLandscapeGlobals::RefineCenter).norm()</font>
01851 <font class="comment"> So inverse this function and we have:</font>
01852 <font class="comment"> dist= sqrt(Size*OORefineThreshold/em).</font>
01853 <font class="comment"> Split or merge is when em==1, so </font>
01854 <font class="comment"> distSplitMerge= sqrt(Size*OORefineThreshold)</font>
01855 <font class="comment">*/</font>
01856
01857
01858 <font class="comment">// Compute distTileTransSplitMerge.</font>
01859 <font class="comment">/* When we are sure that CLandscapeGlobals::TileDistNear < distMinFace < CLandscapeGlobals::TileDistFar, </font>
01860 <font class="comment"> the clamp in the original formula is skipped</font>
01861 <font class="comment"> </font>
01862 <font class="comment"> So the TileErrorMetric formula is:</font>
01863 <font class="comment"></font>
01864 <font class="comment"> {</font>
01865 <font class="comment"> ema= Sife*OORefineThreshold / distSP^2.</font>
01866 <font class="comment"> f= (TileDistFar^2 - distMinFace^2) * OOTileDeltaDist^2</font>
01867 <font class="comment"> f= f ^ 4. // no clamp. see above.</font>
01868 <font class="comment"> emb= NL*f + ema*(1-f)</font>
01869 <font class="comment"> emFinal= max(ema, emb).</font>
01870 <font class="comment"> }</font>
01871 <font class="comment"></font>
01872 <font class="comment"> The problem is that the formula is too complex (degree 8 equation). </font>
01873 <font class="comment"> So search for the result recursively.</font>
01874 <font class="comment">*/</font>
01875
01876
01877 <font class="comment">// Quadrant Selection</font>
01878 <font class="comment">/*</font>
01879 <font class="comment"> Quadrant/Direction is interesting for updateRefineSplit() only.</font>
01880 <font class="comment"> In the 2 most simples cases, the action we want is "Know when we enters in a bounding volume"</font>
01881 <font class="comment"> This fit well for Quadrant notion.</font>
01882 <font class="comment"></font>
01883 <font class="comment"> In the case "TileDistNear to TileDistFar", the rule is too complicated and there is also</font>
01884 <font class="comment"> the notion of "Know when we LEAVE the TileDistFar sphere around the face" which is incompatible</font>
01885 <font class="comment"> with Quadrant behavior (since can go in any direction to leave the sphere).</font>
01886 <font class="comment"></font>
01887 <font class="comment"> updateRefineMerge() are at least all notion of "Know when we LEAVE the SplitSphere around the SplitPoint"</font>
01888 <font class="comment"> which is incompatible with Quadrant behavior.</font>
01889 <font class="comment"> This is why updateRefineMerge() don't bother at all quadrant, and so the _MergePriorityList is inited with 0</font>
01890 <font class="comment"> quadrants.</font>
01891 <font class="comment"></font>
01892 <font class="comment">*/</font>
01893
01894 <font class="comment">// ***************************************************************************</font>
<a name="l01895"></a><a class="code" href="classNL3D_1_1CTessFace.html#a14">01895</a> <font class="keywordtype">void</font> CTessFace::updateRefineSplit()
01896 {
01897 <a class="code" href="landscape__profile_8h.html#a2">NL3D_PROFILE_LAND_ADD</a>(<a class="code" href="namespaceNL3D.html#a77">ProfNRefineFaces</a>, 1);
01898
01899 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>);
01900 <font class="comment">// The face must be not splitted, because tested for split.</font>
01901 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>());
01902
01903 <font class="comment">/*</font>
01904 <font class="comment"> NB: see above for some updateRefine*** doc.</font>
01905 <font class="comment"> */</font>
01906
01907 <font class="comment">// Test for Split.</font>
01908 <font class="comment">//-----------------------</font>
01909 <font class="keywordtype">bool</font> splitted= <font class="keyword">false</font>;
01910 {
01911 <a class="code" href="classNL3D_1_1CTessFace.html#a10">updateErrorMetric</a>();
01912 <font class="keywordtype">float</font> ps=<a class="code" href="classNL3D_1_1CTessFace.html#z821_3">ErrorMetric</a>;
01913 ps*= CLandscapeGlobals::OORefineThreshold;
01914 <font class="comment">// 1.0f is the point of split().</font>
01915 <font class="comment">// 2.0f is the end of geomorph.</font>
01916
01917
01918 <font class="comment">// Test split.</font>
01919 <font class="comment">//---------------------</font>
01920 <font class="comment">// If wanted and limit not reached, split().</font>
01921 <font class="keywordflow">if</font>(ps>1.0f && <a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a>< (<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel + CLandscapeGlobals::TileMaxSubdivision) )
01922 {
01923 <a class="code" href="classNL3D_1_1CTessFace.html#a11">split</a>();
01924
01925 <font class="comment">// if split ok</font>
01926 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
01927 {
01928 splitted= <font class="keyword">true</font>;
01929 }
01930 }
01931 }
01932
01933
01934 <font class="comment">// Insert the face in the priority list.</font>
01935 <font class="comment">//-----------------------</font>
01936 <font class="comment">// If splitted, then insertion in Landscape->MergePriorityList at 0 has been done. so nothing to update.</font>
01937 <font class="comment">// Else, must compute when whe should re-test.</font>
01938 <font class="keywordflow">if</font>(!splitted)
01939 {
01940 <font class="comment">// the face is not splitted here.</font>
01941 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>());
01942
01943 <font class="keywordtype">float</font> minDeltaDistToUpdate;
01944
01945 <font class="comment">// by default insert in the quadrant-less rolling table.</font>
01946 uint quadrantId= 0;
01947
01948
01949 CVector dirToSplitPoint= <a class="code" href="classNL3D_1_1CTessFace.html#z821_2">SplitPoint</a> - CLandscapeGlobals::RefineCenter;
01950 <font class="comment">// The distance of SplitPoint to center.</font>
01951 <font class="keywordtype">float</font> distSplitPoint= dirToSplitPoint.norm();
01952 <font class="comment">// The distance where we should split/merge. see updateRefin() doc.</font>
01953 <font class="keywordtype">float</font> distNormalSplitMerge= (float)sqrt(<a class="code" href="classNL3D_1_1CTessFace.html#z821_1">Size</a>*CLandscapeGlobals::OORefineThreshold);
01954
01955
01956 <font class="comment">// If the face is at its max subdivision</font>
01957 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a>>=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel+CLandscapeGlobals::TileMaxSubdivision)
01958 {
01959 <font class="comment">// special case: the face do not need to be tested for splitting, because Max subdivision reached.</font>
01960 <font class="comment">// Hence just unlink from any list, and return.</font>
01961 <a class="code" href="classNL3D_1_1CTessFacePListNode.html#a5">unlinkInPList</a>();
01962 <font class="keywordflow">return</font>;
01963 }
01964 <font class="keywordflow">else</font> <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a>>=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel)
01965 {
01966 <font class="comment">// Always normal ErrorMetric. Because Faces at Tile level decide to split or merge their sons independently </font>
01967 <font class="comment">// of "Tile ErrorMetric".</font>
01968
01969 <font class="comment">// The test is "when do we enter in the Split area?", so we can use Quadrant PriorityList</font>
01970 quadrantId= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->_SplitPriorityList.selectQuadrant(dirToSplitPoint);
01971
01972 <font class="comment">// compute distance to split as default "No Quadrant"</font>
01973 minDeltaDistToUpdate= distSplitPoint - distNormalSplitMerge;
01974
01975 <font class="comment">// If a quadrant is selected, try to use it</font>
01976 <font class="keywordflow">if</font>(quadrantId>0)
01977 {
01978 <font class="keyword">const</font> CVector &quadrantDir= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->_SplitPriorityList.getQuadrantDirection(quadrantId);
01979
01980 <font class="comment">// We must not approach the SplitPoint at distNormalSplitMerge</font>
01981 <font class="keywordtype">float</font> dMin= quadrantDir*dirToSplitPoint - distNormalSplitMerge;
01982
01983 <font class="comment">// If the dist with quadrant is too small then use the std way (without quadrant).</font>
01984 <font class="keywordflow">if</font>( dMin<<a class="code" href="tessellation_8cpp.html#a0">NL3D_TESS_USE_QUADRANT_THRESHOLD</a> )
01985 quadrantId= 0;
01986 <font class="comment">// else ok, use quadrant behavior</font>
01987 <font class="keywordflow">else</font>
01988 minDeltaDistToUpdate= dMin;
01989 }
01990 }
01991 <font class="keywordflow">else</font>
01992 {
01993 <font class="comment">// Compute Distance of the face from RefineCenter. It is the min of the 3 points, as in computeTileErrorMetric().</font>
01994 CVector dirToV0= <a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>->EndPos - CLandscapeGlobals::RefineCenter;
01995 CVector dirToV1= <a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>->EndPos - CLandscapeGlobals::RefineCenter;
01996 CVector dirToV2= <a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>->EndPos - CLandscapeGlobals::RefineCenter;
01997 <font class="keywordtype">float</font> s0= dirToV0.sqrnorm();
01998 <font class="keywordtype">float</font> s1= dirToV1.sqrnorm();
01999 <font class="keywordtype">float</font> s2= dirToV2.sqrnorm();
02000 <font class="keywordtype">float</font> distMinFace= (float)sqrt( minof(s0, s1, s2) );
02001
02002 <font class="comment">// compute the delta distance to the normal split point. See above for doc.</font>
02003 <font class="keywordtype">float</font> normalEMDeltaDist;
02004 normalEMDeltaDist= distSplitPoint - distNormalSplitMerge;
02005
02006
02007 <font class="comment">/* </font>
02008 <font class="comment"> There is 3 possibles cases, according to level, and the distances minFaceDist:</font>
02009 <font class="comment"> */</font>
02011 <font class="keywordflow">if</font>( distMinFace > CLandscapeGlobals::TileDistFar )
02012 {
02013 <font class="comment">// The test is "when do we enter in the Split area OR in TileDistFar area?", so we can use Quadrant PriorityList</font>
02014 quadrantId= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->_SplitPriorityList.selectQuadrant(dirToSplitPoint);
02015
02016 <font class="comment">// compute deltaDist as default "Direction less quadrant"</font>
02017 minDeltaDistToUpdate= normalEMDeltaDist;
02018 <font class="comment">// We must know when we enter in TileErrorMetric zone, because the computing is different.</font>
02019 minDeltaDistToUpdate= <a class="code" href="bit__set_8cpp.html#a0">min</a>(minDeltaDistToUpdate, distMinFace - CLandscapeGlobals::TileDistFar);
02020
02021 <font class="comment">// try with quadrant if > 0.</font>
02022 <font class="keywordflow">if</font>(quadrantId>0)
02023 {
02024 <font class="keyword">const</font> CVector &quadrantDir= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->_SplitPriorityList.getQuadrantDirection(quadrantId);
02025
02026 <font class="comment">// We must not approach the SplitPoint at distNormalSplitMerge</font>
02027 <font class="keywordtype">float</font> dMin= quadrantDir*dirToSplitPoint - distNormalSplitMerge;
02028 <font class="comment">// and we must not reach one of the 3 sphere (Vi, TileDistFar).</font>
02029 <font class="keywordtype">float</font> d0 = quadrantDir*dirToV0 - CLandscapeGlobals::TileDistFar;
02030 <font class="keywordtype">float</font> d1 = quadrantDir*dirToV1 - CLandscapeGlobals::TileDistFar;
02031 <font class="keywordtype">float</font> d2 = quadrantDir*dirToV2 - CLandscapeGlobals::TileDistFar;
02032 <font class="comment">// take min dist</font>
02033 dMin= minof(dMin, d0, d1, d2);
02034
02035 <font class="comment">// If the dist with quadrant is too small then use the std way (without quadrant).</font>
02036 <font class="keywordflow">if</font>( dMin<<a class="code" href="tessellation_8cpp.html#a0">NL3D_TESS_USE_QUADRANT_THRESHOLD</a> )
02037 quadrantId= 0;
02038 <font class="comment">// else ok, use quadrant behavior</font>
02039 <font class="keywordflow">else</font>
02040 minDeltaDistToUpdate= dMin;
02041 }
02042 }
02044 <font class="keywordflow">else</font> <font class="keywordflow">if</font>( distMinFace > CLandscapeGlobals::TileDistNear )
02045 {
02046 <font class="comment">// NB: can't use quadrant behavior here. Leave quadrantId at 0.</font>
02047
02048 <font class="comment">// Profile</font>
02049 <a class="code" href="landscape__profile_8h.html#a2">NL3D_PROFILE_LAND_ADD</a>(<a class="code" href="namespaceNL3D.html#a82">ProfNRefineInTileTransition</a>, 1);
02050
02051 <font class="comment">// Compute distance to split/Merge in TileTransition</font>
02052 <font class="keywordtype">float</font> distTileTransSplitMerge;
02053 <font class="keywordtype">float</font> maxDeltaDist= 8;
02054 <font class="keywordtype">float</font> minDeltaDist= 0;
02055 uint nbRecurs= 6;
02056 <font class="keywordtype">float</font> nearLimit;
02057 nearLimit= CLandscapeGlobals::RefineThreshold * <a class="code" href="classNL3D_1_1CTessFace.html#a9">computeNearLimit</a>();
02058 <font class="comment">// search the distance to split recursively.</font>
02059 <font class="keywordflow">for</font>(uint i=0; i< nbRecurs; i++)
02060 {
02061 <font class="keywordtype">float</font> pivotDeltaDist= (maxDeltaDist-minDeltaDist)/2;
02062 <font class="comment">// If the em computed with this distance is still <1 (ie merged), then we can move further.</font>
02063 <font class="keywordflow">if</font> ( <a class="code" href="classNL3D_1_1CTessFace.html#c1">computeTileEMForUpdateRefine</a>(distSplitPoint-pivotDeltaDist, distMinFace-pivotDeltaDist, nearLimit ) < 1)
02064 minDeltaDist= pivotDeltaDist;
02065 <font class="comment">// else we must move not as far</font>
02066 <font class="keywordflow">else</font>
02067 maxDeltaDist= pivotDeltaDist;
02068 }
02069 <font class="comment">// And so take the minimum resulting delta distance</font>
02070 distTileTransSplitMerge= minDeltaDist;
02071
02072 <font class="comment">// take the min with distance of distMinFace to the TileDistNear and TileDistFar sphere, because formula change at</font>
02073 <font class="comment">// those limits.</font>
02074 minDeltaDistToUpdate= <a class="code" href="bit__set_8cpp.html#a0">min</a>(distTileTransSplitMerge, CLandscapeGlobals::TileDistFar - distMinFace );
02075 minDeltaDistToUpdate= <a class="code" href="bit__set_8cpp.html#a0">min</a>(minDeltaDistToUpdate, distMinFace - CLandscapeGlobals::TileDistNear);
02076 }
02078 <font class="keywordflow">else</font>
02079 {
02080 <font class="comment">// because the face is not a Tile Level (ie Level<Patch->TileLimitLevel), it should be splitted, </font>
02081 <font class="comment">// and won't merge until reaching at least the TileDistNear sphere.</font>
02082 <font class="comment">// if not splited (should not arise), force the split next time.</font>
02083 minDeltaDistToUpdate= 0;
02084 }
02085
02086 }
02087
02088 <font class="comment">// Profile.</font>
02089 <font class="keywordflow">if</font>(minDeltaDistToUpdate<0.0625)
02090 {
02091 <a class="code" href="landscape__profile_8h.html#a2">NL3D_PROFILE_LAND_ADD</a>(<a class="code" href="namespaceNL3D.html#a83">ProfNRefineWithLowDistance</a>, 1);
02092 }
02093
02094
02095 <font class="comment">// insert in the Split priority list.</font>
02096 <font class="comment">// Until the RefineCenter move under minDeltaDistToUpdate, we don't need to test face.</font>
02097 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->_SplitPriorityList.insert(quadrantId, minDeltaDistToUpdate, <font class="keyword">this</font>);
02098 }
02099 }
02100
02101
02102 <font class="comment">// ***************************************************************************</font>
<a name="l02103"></a><a class="code" href="classNL3D_1_1CTessFace.html#a15">02103</a> <font class="keywordtype">void</font> CTessFace::updateRefineMerge()
02104 {
02105 <a class="code" href="landscape__profile_8h.html#a2">NL3D_PROFILE_LAND_ADD</a>(<a class="code" href="namespaceNL3D.html#a77">ProfNRefineFaces</a>, 1);
02106
02107 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>);
02108 <font class="comment">// The face must be splitted, because tested for merge.</font>
02109 <a class="code" href="debug_8h.html#a6">nlassert</a>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>());
02110
02111 <font class="comment">/*</font>
02112 <font class="comment"> NB: see above for some updateRefine*** doc.</font>
02113 <font class="comment"> */</font>
02114
02115 <font class="comment">// Test for merge.</font>
02116 <font class="comment">//-----------------------</font>
02117 <font class="keywordtype">bool</font> merged= <font class="keyword">false</font>;
02118 {
02119 <a class="code" href="classNL3D_1_1CTessFace.html#a10">updateErrorMetric</a>();
02120 <font class="keywordtype">float</font> ps=<a class="code" href="classNL3D_1_1CTessFace.html#z821_3">ErrorMetric</a>;
02121 ps*= CLandscapeGlobals::OORefineThreshold;
02122 <font class="comment">// 1.0f is the point of split().</font>
02123 <font class="comment">// 2.0f is the end of geomorph.</font>
02124
02125
02126 <font class="comment">// Test merge.</font>
02127 <font class="comment">//---------------------</font>
02128 <font class="comment">// Else, must merge ??</font>
02129 <font class="keywordflow">if</font>(ps<1.0f)
02130 {
02131 <font class="comment">// Merge only if agree, and neighbors agree.</font>
02132 <font class="comment">// canMerge() test all the good thing: FBase==CantMergeFace, or this is rectangular etc...</font>
02133 <font class="comment">// The test is propagated to neighbors.</font>
02134 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#c2">canMerge</a>(<font class="keyword">true</font>))
02135 {
02136 <a class="code" href="classNL3D_1_1CTessFace.html#a12">merge</a>();
02137
02138 <font class="comment">// NB: here, merge() is not propagated to fathers (supposed to be not very usefull).</font>
02139
02140 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02141 {
02142 merged= <font class="keyword">true</font>;
02143 }
02144 }
02145 }
02146 }
02147
02148
02149 <font class="comment">// Insert the face in the priority list.</font>
02150 <font class="comment">//-----------------------</font>
02151 <font class="comment">// If merged, then insertion in Landscape->SplitPriorityList at 0 has been done. so nothing to update.</font>
02152 <font class="comment">// Else, must compute when whe should re-test.</font>
02153 <font class="keywordflow">if</font>(!merged)
02154 {
02155 <font class="comment">// the face is splitted here.</font>
02156 <a class="code" href="debug_8h.html#a6">nlassert</a>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>());
02157
02158 <font class="keywordtype">float</font> minDeltaDistToUpdate;
02159
02160
02161 <font class="comment">// The distance of SplitPoint to center.</font>
02162 <font class="keywordtype">float</font> distSplitPoint= (<a class="code" href="classNL3D_1_1CTessFace.html#z821_2">SplitPoint</a> - CLandscapeGlobals::RefineCenter).norm();
02163 <font class="comment">// Compute distance from refineCenter to normal split/merge (ie without tile transition).</font>
02164 <font class="keywordtype">float</font> distNormalSplitMerge= (float)sqrt(<a class="code" href="classNL3D_1_1CTessFace.html#z821_1">Size</a>*CLandscapeGlobals::OORefineThreshold);
02165
02166
02167 <font class="comment">// If the face is at its max subdivision</font>
02168 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a>>=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel+CLandscapeGlobals::TileMaxSubdivision)
02169 {
02170 <font class="comment">// since the face is splitted, then must test always this face, because we must merge it (as soon as it is possible).</font>
02171 minDeltaDistToUpdate= 0;
02172 }
02173 <font class="keywordflow">else</font> <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a>>=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel)
02174 {
02175 <font class="comment">// Always normal ErrorMetric. Because Faces at Tile level decide to split or merge their sons independently </font>
02176 <font class="comment">// of "Tile ErrorMetric".</font>
02177 <font class="comment">// since splitted, compute distance to merge.</font>
02178 minDeltaDistToUpdate= distNormalSplitMerge - distSplitPoint;
02179 <font class="comment">// NB: it is possible that minDeltaDistToUpdate<0. A good example is when we are enforced split.</font>
02180 <font class="comment">// Then, distSplitMerge may be < distSplitPoint, meaning we should have not split, but a neigbhor has enforced us.</font>
02181 <font class="comment">// So now, must test every frame if we can merge....</font>
02182 minDeltaDistToUpdate= max( 0.f, minDeltaDistToUpdate );
02183 }
02184 <font class="keywordflow">else</font>
02185 {
02186 <font class="comment">// Compute Distance of the face from RefineCenter. It is the min of the 3 points, as in computeTileErrorMetric().</font>
02187 <font class="keywordtype">float</font> s0= (<a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>->EndPos - CLandscapeGlobals::RefineCenter).sqrnorm();
02188 <font class="keywordtype">float</font> s1= (<a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>->EndPos - CLandscapeGlobals::RefineCenter).sqrnorm();
02189 <font class="keywordtype">float</font> s2= (<a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>->EndPos - CLandscapeGlobals::RefineCenter).sqrnorm();
02190 <font class="keywordtype">float</font> distMinFace= (float)sqrt( minof(s0, s1, s2) );
02191
02192 <font class="comment">// compute the delta distance to the normal split point. See above for doc.</font>
02193 <font class="keywordtype">float</font> normalEMDeltaDist;
02194 normalEMDeltaDist= distNormalSplitMerge - distSplitPoint;
02195 normalEMDeltaDist= max( 0.f, normalEMDeltaDist );
02196
02197
02198 <font class="comment">/* </font>
02199 <font class="comment"> There is 3 possibles cases, according to level, and the distances minFaceDist:</font>
02200 <font class="comment"> */</font>
02202 <font class="keywordflow">if</font>( distMinFace > CLandscapeGlobals::TileDistFar )
02203 {
02204 <font class="comment">// normal geomorph. Any face compute the distance to the SplitPoint, and take min with distance to</font>
02205 <font class="comment">// the TileDistFar sphere. </font>
02206 minDeltaDistToUpdate= normalEMDeltaDist;
02207
02208 <font class="comment">// We must know when we enter in TileErrorMetric zone, because the computing is different.</font>
02209 minDeltaDistToUpdate= <a class="code" href="bit__set_8cpp.html#a0">min</a>(minDeltaDistToUpdate, distMinFace - CLandscapeGlobals::TileDistFar);
02210 }
02212 <font class="keywordflow">else</font> <font class="keywordflow">if</font>( distMinFace > CLandscapeGlobals::TileDistNear )
02213 {
02214 <font class="comment">// Profile</font>
02215 <a class="code" href="landscape__profile_8h.html#a2">NL3D_PROFILE_LAND_ADD</a>(<a class="code" href="namespaceNL3D.html#a82">ProfNRefineInTileTransition</a>, 1);
02216
02217
02218 <font class="comment">// Compute distance to split/Merge in TileTransition</font>
02219 <font class="keywordtype">float</font> distTileTransSplitMerge;
02220 <font class="keywordtype">float</font> maxDeltaDist= 8;
02221 <font class="keywordtype">float</font> minDeltaDist= 0;
02222 uint nbRecurs= 6;
02223 <font class="keywordtype">float</font> nearLimit;
02224 nearLimit= CLandscapeGlobals::RefineThreshold * <a class="code" href="classNL3D_1_1CTessFace.html#a9">computeNearLimit</a>();
02225 <font class="comment">// Since splitted, compute distance to merge.</font>
02226 <font class="comment">// search the distance recursively.</font>
02227 <font class="keywordflow">for</font>(uint i=0; i< nbRecurs; i++)
02228 {
02229 <font class="keywordtype">float</font> pivotDeltaDist= (maxDeltaDist-minDeltaDist)/2;
02230 <font class="comment">// If the em computed with this distance is still >1 (ie splitted), then we can move further.</font>
02231 <font class="keywordflow">if</font> ( <a class="code" href="classNL3D_1_1CTessFace.html#c1">computeTileEMForUpdateRefine</a>(distSplitPoint+pivotDeltaDist, distMinFace+pivotDeltaDist, nearLimit ) > 1)
02232 minDeltaDist= pivotDeltaDist;
02233 <font class="comment">// else we must move not as far</font>
02234 <font class="keywordflow">else</font>
02235 maxDeltaDist= pivotDeltaDist;
02236 }
02237 <font class="comment">// And so take the minimum resulting delta distance</font>
02238 distTileTransSplitMerge= minDeltaDist;
02239
02240 <font class="comment">// take the min with distance of distMinFace to the TileDistNear and TileDistFar sphere, because formula change at</font>
02241 <font class="comment">// those limits.</font>
02242 minDeltaDistToUpdate= <a class="code" href="bit__set_8cpp.html#a0">min</a>(distTileTransSplitMerge, CLandscapeGlobals::TileDistFar - distMinFace );
02243 minDeltaDistToUpdate= <a class="code" href="bit__set_8cpp.html#a0">min</a>(minDeltaDistToUpdate, distMinFace - CLandscapeGlobals::TileDistNear);
02244 }
02246 <font class="keywordflow">else</font>
02247 {
02248 <font class="comment">// because the face is not a Tile Level (ie Level<Patch->TileLimitLevel), it should be splitted, </font>
02249 <font class="comment">// and won't merge until reaching at least the TileDistNear sphere.</font>
02250 <font class="comment">// Since splitted, Must enter in TileErrorMetric area to know when to merge.</font>
02251 minDeltaDistToUpdate= CLandscapeGlobals::TileDistNear - distMinFace;
02252 }
02253
02254 }
02255
02256 <font class="comment">// Merge Refine Threshold: because of enforced splits, we have lot of faces whit minDeltaDistToUpdate<0, because</font>
02257 <font class="comment">// they alwayas want to merge. To avoid this, add a delta, which delay the test for merge.</font>
02258 <font class="comment">// The caveat is that faces which do not need this may merge later. But 2 meters won't add too many faces.</font>
02259 minDeltaDistToUpdate+= <a class="code" href="landscape__def_8h.html#a7">NL3D_REFINE_MERGE_THRESHOLD</a>;
02260
02261 <font class="comment">// insert in the Merge priority list.</font>
02262 <font class="comment">// Until the RefineCenter move under minDeltaDistToUpdate, we don't need to test face.</font>
02263 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->_MergePriorityList.insert(0, minDeltaDistToUpdate, <font class="keyword">this</font>);
02264 }
02265 }
02266
02267
02268 <font class="comment">// ***************************************************************************</font>
<a name="l02269"></a><a class="code" href="classNL3D_1_1CTessFace.html#a17">02269</a> <font class="keywordtype">void</font> CTessFace::unbind()
02270 {
02271 <font class="comment">// NB: since CantMergeFace has a NULL patch ptr, it is unbound too.</font>
02272
02273 <font class="comment">// Square case.</font>
02274 <font class="comment">//=============</font>
02275 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>())
02276 {
02277 <font class="comment">// Change Left/Right neighbors.</font>
02278 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02279 {
02280 <font class="comment">// FLeft and FRight pointers are only valid in Leaves nodes.</font>
02281 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a> && <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->Patch!=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>)
02282 {
02283 <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->changeNeighbor(<font class="keyword">this</font>, NULL);
02284 <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>= NULL;
02285 }
02286 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a> && <a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>->Patch!=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>)
02287 {
02288 <a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>->changeNeighbor(<font class="keyword">this</font>, NULL);
02289 <a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>= NULL;
02290 }
02291 }
02292 <font class="comment">// Change Base neighbors.</font>
02293 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> && <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->Patch!=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>)
02294 {
02295 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *oldNeigbhorFace= <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>;
02296
02297 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->changeNeighbor(<font class="keyword">this</font>, NULL);
02298 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>= NULL;
02299 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02300 {
02301 <font class="comment">// Duplicate the VBase of sons, so the unbind is correct and no vertices are shared.</font>
02302 CTessVertex *old= <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase;
02303 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessVertex();
02304 *(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase)= *old;
02305 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->VBase= <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase;
02306
02307 <font class="comment">// For geomorph (VertexProgram or soft), compute good MaxFaceSize and MaxNearLimit (change since unbinded)</font>
02308 <font class="comment">// update us.</font>
02309 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase->MaxFaceSize= <a class="code" href="classNL3D_1_1CTessFace.html#z821_1">Size</a>;
02310 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase->MaxNearLimit= <a class="code" href="classNL3D_1_1CTessFace.html#a9">computeNearLimit</a>();
02311 <font class="comment">// update our neigbhor, only if not a multiple patch face.</font>
02312 <font class="keywordflow">if</font>(oldNeigbhorFace->Patch)
02313 {
02314 old->MaxFaceSize= oldNeigbhorFace->Size;
02315 old->MaxNearLimit= oldNeigbhorFace->computeNearLimit();
02316 }
02317 }
02318 }
02319 }
02320 <font class="comment">// Rectangular case.</font>
02321 <font class="comment">//==================</font>
02322 <font class="keywordflow">else</font>
02323 {
02324 <font class="comment">// Doens't need to test FBase, since must be same patch.</font>
02325 <font class="comment">// In rectangular, FLeft has the behavior of FBase in square case.</font>
02326 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a> && <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->Patch!=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>)
02327 {
02328 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *oldNeigbhorFace= <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>;
02329
02330 <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->changeNeighbor(<font class="keyword">this</font>, NULL);
02331 <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>= NULL;
02332 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02333 {
02334 <font class="comment">// Duplicate the VBase of sons, so the unbind is correct and no vertices are shared.</font>
02335 <font class="comment">// NB: this code is a bit different from square case.</font>
02336 CTessVertex *old= <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase;
02337 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->newTessVertex();
02338 *(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase)= *old;
02339 <font class="comment">// This is the difference: (see rectangle tesselation rules).</font>
02340 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->VLeft= <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase;
02341 <font class="comment">// Yoyo_patch_himself (12/02/2001): I forgot this one!!</font>
02342 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> && <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft);
02343 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft->VRight= <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase;
02344
02345
02346 <font class="comment">// For geomorph (VertexProgram or soft), compute good MaxFaceSize and MaxNearLimit (change since unbinded)</font>
02347 <font class="comment">// update us.</font>
02348 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase->MaxFaceSize= <a class="code" href="classNL3D_1_1CTessFace.html#z821_1">Size</a>;
02349 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase->MaxNearLimit= <a class="code" href="classNL3D_1_1CTessFace.html#a9">computeNearLimit</a>();
02350 <font class="comment">// update our neigbhor, only if not a multiple patch face.</font>
02351 <font class="keywordflow">if</font>(oldNeigbhorFace->Patch)
02352 {
02353 old->MaxFaceSize= oldNeigbhorFace->Size;
02354 old->MaxNearLimit= oldNeigbhorFace->computeNearLimit();
02355 }
02356 }
02357 }
02358 <font class="comment">// But FRight still valid in leaves nodes only.</font>
02359 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02360 {
02361 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a> && <a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>->Patch!=<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>)
02362 {
02363 <a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>->changeNeighbor(<font class="keyword">this</font>, NULL);
02364 <a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>= NULL;
02365 }
02366 }
02367 }
02368
02369 <font class="comment">// Propagate unbind.</font>
02370 <font class="comment">//==================</font>
02371 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02372 {
02373 <font class="comment">// update sons vertex pointers (since they may have been updated by me or my grandfathers).</font>
02374 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>())
02375 {
02376 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VLeft= <a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>;
02377 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VRight= <a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>;
02378 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->VLeft= <a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>;
02379 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->VRight= <a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>;
02380 }
02381 <font class="keywordflow">else</font>
02382 {
02383 <font class="comment">// Rectangular case. Update only ptrs which may have changed.</font>
02384 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VLeft= <a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>;
02385 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->VBase= <a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>;
02386 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->VRight= <a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>;
02387 }
02388
02389 <font class="comment">// Must re-create good Vertex links for Far and Near Vertices!!!</font>
02390 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->updateNearFarVertices();
02391 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->updateNearFarVertices();
02392 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>())
02393 {
02394 <font class="comment">//NB: must do this for Base neighbor (see unbind() rectangular case...).</font>
02395 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> && <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft && <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonRight);
02396 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft->updateNearFarVertices();
02397 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonRight->updateNearFarVertices();
02398 }
02399
02400 <font class="comment">// unbind the sons.</font>
02401 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->unbind();
02402 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->unbind();
02403 }
02404
02405 }
02406 <font class="comment">// ***************************************************************************</font>
<a name="l02407"></a><a class="code" href="classNL3D_1_1CTessFace.html#a18">02407</a> <font class="keywordtype">void</font> CTessFace::forceMerge()
02408 {
02409 <font class="keywordflow">if</font>(<font class="keyword">this</font>== &<a class="code" href="classNL3D_1_1CTessFace.html#r0">CantMergeFace</a>)
02410 <font class="keywordflow">return</font>;
02411
02412 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02413 {
02414 <font class="comment">// First, force merge of Sons and neighbor sons, to have a diamond configuration.</font>
02415 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->forceMerge();
02416 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->forceMerge();
02417
02418 <font class="comment">// forceMerge of necessary neighbors.</font>
02419 <a class="code" href="classNL3D_1_1CTessFace.html#z819_15">RecursMarkForceMerge</a>=<font class="keyword">true</font>;
02420 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>())
02421 {
02422 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> && !<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->RecursMarkForceMerge)
02423 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->forceMerge();
02424 }
02425 <font class="keywordflow">else</font>
02426 {
02427 <font class="comment">// Rectangular case. May have a longer propagation...</font>
02428 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> && !<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->RecursMarkForceMerge)
02429 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->forceMerge();
02430 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a> && !<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->RecursMarkForceMerge)
02431 <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>->forceMerge();
02432 }
02433 <a class="code" href="classNL3D_1_1CTessFace.html#z819_15">RecursMarkForceMerge</a>=<font class="keyword">false</font>;
02434
02435 <font class="comment">// If still a parent, merge.</font>
02436 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02437 <a class="code" href="classNL3D_1_1CTessFace.html#a12">merge</a>();
02438 }
02439 }
02440
02441
02442 <font class="comment">// ***************************************************************************</font>
<a name="l02443"></a><a class="code" href="classNL3D_1_1CTessFace.html#a23">02443</a> <font class="keywordtype">void</font> CTessFace::forceMergeAtTileLevel()
02444 {
02445 <font class="keywordflow">if</font>(<font class="keyword">this</font>== &<a class="code" href="classNL3D_1_1CTessFace.html#r0">CantMergeFace</a>)
02446 <font class="keywordflow">return</font>;
02447
02448 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02449 {
02450 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->forceMergeAtTileLevel();
02451 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->forceMergeAtTileLevel();
02452 }
02453 <font class="keywordflow">else</font>
02454 {
02455 <font class="comment">// If we are at tile subdivision, we must force our sons to merge.</font>
02456 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a>==<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel)
02457 <a class="code" href="classNL3D_1_1CTessFace.html#a18">forceMerge</a>();
02458 }
02459 }
02460
02461
02462 <font class="comment">// ***************************************************************************</font>
<a name="l02463"></a><a class="code" href="classNL3D_1_1CTessFace.html#a24">02463</a> <font class="keywordtype">void</font> CTessFace::averageTesselationVertices()
02464 {
02465 <font class="comment">// If we are not splitted, no-op.</font>
02466 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02467 <font class="keywordflow">return</font>;
02468
02469
02470 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *neighbor;
02471 <font class="comment">// Normal square case.</font>
02472 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>())
02473 {
02474 neighbor= <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>;
02475 }
02476 <font class="comment">// Special Rectangular case.</font>
02477 <font class="keywordflow">else</font>
02478 {
02479 <font class="comment">// NB: here, just need to compute average of myself with FLeft, because my neighbor FBase </font>
02480 <font class="comment">// is on same patch (see splitRectangular()), and is average with its FLeft neighbor is done </font>
02481 <font class="comment">// on an other branch of the recurs call.</font>
02482 neighbor= <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>;
02483 }
02484
02485
02486 <font class="comment">/* Try to average with neighbor.</font>
02487 <font class="comment"> - if no neighbor, no-op :).</font>
02488 <font class="comment"> - if neighbor is bind 1/N (CantMergeFace), no-op too, because the vertex is a BaseVertex, so don't modify.</font>
02489 <font class="comment"> - if my patch is same than my neighbor, then we are on a same patch :), and so no need to average.</font>
02490 <font class="comment"> */</font>
02491 <font class="keywordflow">if</font>(neighbor!=NULL && neighbor!=&<a class="code" href="classNL3D_1_1CTessFace.html#r0">CantMergeFace</a> && <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>!= neighbor->Patch)
02492 {
02493 <a class="code" href="debug_8h.html#a6">nlassert</a>(neighbor->Patch);
02494 <a class="code" href="debug_8h.html#a6">nlassert</a>(!neighbor->isLeaf());
02495 <font class="comment">// must compute average beetween me and my neighbor.</font>
02496 <font class="comment">// NB: this work with both rectangular and square triangles (see split*()).</font>
02497 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase == neighbor->SonLeft->VBase);
02498
02499 CVector v0= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->computeVertex(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->PVBase.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->PVBase.getT());
02500 CVector v1= neighbor->Patch->computeVertex(neighbor->SonLeft->PVBase.getS(), neighbor->SonLeft->PVBase.getT());
02501
02502 <font class="comment">// And so set the average.</font>
02503 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase->EndPos= (v0+v1)/2;
02504 }
02505
02506
02507 <font class="comment">// Do same thing for sons. NB: see above, we are not a leaf.</font>
02508 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->averageTesselationVertices();
02509 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->averageTesselationVertices();
02510 }
02511
02512
02513 <font class="comment">// ***************************************************************************</font>
<a name="l02514"></a><a class="code" href="classNL3D_1_1CTessFace.html#a25">02514</a> <font class="keywordtype">void</font> CTessFace::refreshTesselationGeometry()
02515 {
02516 <font class="comment">// must enlarge the little tessBlock (if any), for clipping.</font>
02517 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->extendTessBlockWithEndPos(<font class="keyword">this</font>);
02518
02519 <font class="comment">// If we are not splitted, no-op.</font>
02520 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02521 <font class="keywordflow">return</font>;
02522
02523
02524 <font class="comment">/* NB: rectangular case: just need to take SonLeft->VBase, because my neighbor on FBase will compute his son</font>
02525 <font class="comment"> on an other branch of the recurs call.</font>
02526 <font class="comment"> */</font>
02527 <font class="comment">// re-compute this position (maybe with new noise geometry in Tile Edition).</font>
02528 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase->EndPos= <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->computeVertex(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->PVBase.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->PVBase.getT());
02529 <font class="comment">// overwrite cur Pos (NB: specialy hardcoded for Tile edition).</font>
02530 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase->Pos= <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase->EndPos;
02531
02532 <font class="comment">// Do same thing for sons. NB: see above, we are not a leaf.</font>
02533 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->refreshTesselationGeometry();
02534 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->refreshTesselationGeometry();
02535 }
02536
02537
02538 <font class="comment">// ***************************************************************************</font>
<a name="l02539"></a><a class="code" href="classNL3D_1_1CTessFace.html#a20">02539</a> <font class="keywordtype">bool</font> CTessFace::updateBindEdge(CTessFace *&edgeFace, <font class="keywordtype">bool</font> &splitWanted)
02540 {
02541 <font class="comment">// Return true, when the bind should be Ok, or if a split has occured.</font>
02542 <font class="comment">// Return false only if pointers are updated, without splits.</font>
02543
02544 <font class="keywordflow">if</font>(edgeFace==NULL)
02545 <font class="keywordflow">return</font> <font class="keyword">true</font>;
02546
02547 <font class="keywordflow">if</font>(edgeFace->isLeaf())
02548 <font class="keywordflow">return</font> <font class="keyword">true</font>;
02549
02550 <font class="comment">/*</font>
02551 <font class="comment"> Look at the callers, and you'll see that "this" is always a leaf.</font>
02552 <font class="comment"> Therefore, edgeFace is a valid pointer (either if it is FLeft, FRight or FBase).</font>
02553 <font class="comment"> */</font>
02554
02555 <font class="comment">// MultiPatch face case.</font>
02556 <font class="comment">//======================</font>
02557 <font class="comment">// If neighbor is a multiple face.</font>
02558 <font class="keywordflow">if</font>(edgeFace->Patch==NULL && edgeFace->FBase==<font class="keyword">this</font>)
02559 {
02560 splitWanted= <font class="keyword">true</font>;
02561 <font class="keywordflow">return</font> <font class="keyword">true</font>;
02562 }
02563
02564
02565 <font class="comment">// neighbor is a "Square face" case.</font>
02566 <font class="comment">//==================================</font>
02567 <font class="keywordflow">if</font>(!edgeFace->isRectangular())
02568 {
02569 <font class="comment">// NB: this code works either if I AM a rectangular face or a square face.</font>
02570
02571 <font class="comment">// If the neighbor is splitted on ourself, split...</font>
02572 <font class="keywordflow">if</font>(edgeFace->FBase==<font class="keyword">this</font>)
02573 {
02574 splitWanted= <font class="keyword">true</font>;
02575 <font class="keywordflow">return</font> <font class="keyword">true</font>;
02576 }
02577 <font class="keywordflow">else</font>
02578 {
02579 <font class="comment">// Just update pointers...</font>
02580 <font class="keywordflow">if</font>(edgeFace->FLeft==<font class="keyword">this</font>)
02581 {
02582 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *sonLeft= edgeFace->SonLeft;
02583 sonLeft->FBase= <font class="keyword">this</font>;
02584 edgeFace= sonLeft;
02585 }
02586 <font class="keywordflow">else</font> <font class="keywordflow">if</font>(edgeFace->FRight==<font class="keyword">this</font>)
02587 {
02588 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *sonRight= edgeFace->SonRight;
02589 sonRight->FBase= <font class="keyword">this</font>;
02590 edgeFace= sonRight;
02591 }
02592 <font class="keywordflow">else</font>
02593 {
02594 <font class="comment">// Look at the callers, and you'll see that "this" is always a leaf.</font>
02595 <font class="comment">// Therefore, we should never be here.</font>
02596 <a class="code" href="debug_8h.html#a12">nlstop</a>;
02597 }
02598 }
02599 }
02600 <font class="comment">// neighbor is a "Rectangle face" case.</font>
02601 <font class="comment">//=====================================</font>
02602 <font class="keywordflow">else</font>
02603 {
02604 <font class="comment">// NB: this code works either if I AM a rectangular face or a square face.</font>
02605
02606 <font class="comment">// If the neighbor is splitted on ourself, split...</font>
02607 <font class="comment">// Test FLeft because of rectangular case... :)</font>
02608 <font class="comment">// FBase should be tested too. If edgeFace->FBase==this, I should be myself a rectangular face.</font>
02609 <font class="keywordflow">if</font>(edgeFace->FLeft==<font class="keyword">this</font> || edgeFace->FBase==<font class="keyword">this</font>)
02610 {
02611 splitWanted= <font class="keyword">true</font>;
02612 <font class="keywordflow">return</font> <font class="keyword">true</font>;
02613 }
02614 <font class="keywordflow">else</font>
02615 {
02616 <font class="keywordflow">if</font>(edgeFace->FRight==<font class="keyword">this</font>)
02617 {
02618 <font class="comment">// See rectangular tesselation rules, too know why we do this.</font>
02619 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *sonRight= edgeFace->SonRight;
02620 sonRight->FRight= <font class="keyword">this</font>;
02621 edgeFace= sonRight;
02622 }
02623 <font class="keywordflow">else</font>
02624 {
02625 <font class="comment">// Look at the callers, and you'll see that "this" is always a leaf.</font>
02626 <font class="comment">// Therefore, we should never be here.</font>
02627 <a class="code" href="debug_8h.html#a12">nlstop</a>;
02628 }
02629 }
02630 }
02631
02632 <font class="keywordflow">return</font> <font class="keyword">false</font>;
02633 }
02634
02635
02636
02637 <font class="comment">// ***************************************************************************</font>
<a name="l02638"></a><a class="code" href="classNL3D_1_1CTessFace.html#a22">02638</a> <font class="keywordtype">void</font> CTessFace::updateBindAndSplit()
02639 {
02640 <font class="keywordtype">bool</font> splitWanted= <font class="keyword">false</font>;
02641 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *f0= NULL;
02642 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *f1= NULL;
02643 <font class="comment">/*</font>
02644 <font class="comment"> Look at the callers, and you'll see that "this" is always a leaf.</font>
02645 <font class="comment"> Therefore, FBase, FLeft and FRight are good pointers, and *FLeft and *FRight should be Ok too.</font>
02646 <font class="comment"> */</font>
02647 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>());
02648 <font class="keywordflow">while</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a20">updateBindEdge</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>, splitWanted));
02649 <font class="comment">// FLeft and FRight pointers are only valid in Leaves nodes.</font>
02650 <font class="keywordflow">while</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a20">updateBindEdge</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>, splitWanted));
02651 <font class="keywordflow">while</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a20">updateBindEdge</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>, splitWanted));
02652 <font class="comment">// In rectangular case, we MUST also update edges of FBase.</font>
02653 <font class="comment">// Because splitRectangular() split those two faces at the same time.</font>
02654 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>())
02655 {
02656 f0= <font class="keyword">this</font>;
02657 f1= <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>;
02658 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>);
02659 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf());
02660 <font class="comment">// Doesn't need to update FBase->FBase, since it's me!</font>
02661 <font class="comment">// FLeft and FRight pointers are only valid in Leaves nodes.</font>
02662 <font class="keywordflow">while</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->updateBindEdge(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->FLeft, splitWanted));
02663 <font class="keywordflow">while</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->updateBindEdge(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->FRight, splitWanted));
02664 }
02665
02666
02667
02668 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *fmult= NULL;
02669 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *fmult0= NULL;
02670 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *fmult1= NULL;
02671 <font class="comment">// If multipatch face case.</font>
02672 <font class="comment">//=========================</font>
02673 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>())
02674 {
02675 <font class="comment">// multipatch face case are detected when face->Patch==NULL !!!</font>
02676 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> && <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->Patch==NULL)
02677 {
02678 fmult= <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>;
02679 <font class="comment">// First, trick: FBase is NULL, so during the split. => no ptr problem.</font>
02680 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>= NULL;
02681 }
02682 }
02683 <font class="keywordflow">else</font>
02684 {
02685 <font class="comment">// multipatch face case are detected when face->Patch==NULL !!!</font>
02686 <font class="keywordflow">if</font>(f0->FLeft && f0->FLeft->Patch==NULL)
02687 {
02688 fmult0= f0->FLeft;
02689 <font class="comment">// First, trick: neighbor is NULL, so during the split. => no ptr problem.</font>
02690 f0->FLeft= NULL;
02691 }
02692 <font class="comment">// multipatch face case are detected when face->Patch==NULL !!!</font>
02693 <font class="keywordflow">if</font>(f1->FLeft && f1->FLeft->Patch==NULL)
02694 {
02695 fmult1= f1->FLeft;
02696 <font class="comment">// First, trick: neighbor is NULL, so during the split. => no ptr problem.</font>
02697 f1->FLeft= NULL;
02698 }
02699 }
02700
02701 <font class="comment">// Then split, and propagate.</font>
02702 <font class="comment">//===========================</font>
02703 <a class="code" href="classNL3D_1_1CTessFace.html#a11">split</a>(<font class="keyword">false</font>);
02704 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>())
02705 {
02706 <font class="keywordflow">if</font>(FBase)
02707 {
02708 <font class="keywordflow">while</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf())
02709 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->updateBindAndSplit();
02710 }
02711 <font class="comment">// There is a possible bug here (maybe easily patched). Sons may have be propagated splitted.</font>
02712 <font class="comment">// And problems may arise because this face hasn't yet good connectivity.</font>
02713 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->isLeaf() && <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->isLeaf());
02714 }
02715 <font class="keywordflow">else</font>
02716 {
02717 <font class="keywordflow">if</font>(f0->FLeft)
02718 {
02719 <font class="keywordflow">while</font>(f0->FLeft->isLeaf())
02720 f0->FLeft->updateBindAndSplit();
02721 }
02722 <font class="keywordflow">if</font>(f1->FLeft)
02723 {
02724 <font class="keywordflow">while</font>(f1->FLeft->isLeaf())
02725 f1->FLeft->updateBindAndSplit();
02726 }
02727 <font class="comment">// There is a possible bug here (maybe easily patched). Sons may have be propagated splitted.</font>
02728 <font class="comment">// And problems may arise because this face hasn't yet good connectivity.</font>
02729 <a class="code" href="debug_8h.html#a6">nlassert</a>(f0->SonLeft->isLeaf() && f0->SonRight->isLeaf());
02730 <a class="code" href="debug_8h.html#a6">nlassert</a>(f1->SonLeft->isLeaf() && f1->SonRight->isLeaf());
02731 }
02732
02733
02734 <font class="comment">// If multipatch face case, update neighbors.</font>
02735 <font class="comment">//===========================================</font>
02736 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>() && fmult)
02737 {
02738 <font class="comment">// Update good Face neighbors.</font>
02739 <font class="comment">//============================</font>
02740 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->FRight= fmult->SonRight;
02741 fmult->SonRight->changeNeighbor(&CTessFace::MultipleBindFace, <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>);
02742
02743 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->FLeft= fmult->SonLeft;
02744 fmult->SonLeft->changeNeighbor(&CTessFace::MultipleBindFace, <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>);
02745
02746 <font class="comment">// NB: this work auto with 1/2 or 1/4. See CPatch::bind(), to understand.</font>
02747 <font class="comment">// In 1/4 case, fmult->SonLeft and fmult->SonRight are themselves MultiPatch face. So it will recurse.</font>
02748
02749 <font class="comment">// Update good vertex pointer.</font>
02750 <font class="comment">//============================</font>
02751 CTessVertex *vert= fmult->VBase;
02752
02753 <font class="comment">// Copy the good coordinate: those splitted (because of noise).</font>
02754 vert->Pos= vert->StartPos= vert->EndPos= <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase->EndPos;
02755 <font class="comment">// But delete the pointer.</font>
02756 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->deleteTessVertex(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase);
02757 <font class="comment">// And update sons pointers, to good vertex.</font>
02758 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->VBase= vert;
02759 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->VBase= vert;
02760 <font class="comment">// Compute correct centers.</font>
02761 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->computeSplitPoint();
02762 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->computeSplitPoint();
02763
02764
02765 <font class="comment">// Update good Far vertex pointer.</font>
02766 <font class="comment">//================================</font>
02767 <font class="comment">// Because *->VBase may have been merged to the multiple bind face, Near/FarVertices which pointed on it must</font>
02768 <font class="comment">// be setup.</font>
02769 <font class="comment">// We do not have to propagate this vertex ptr change since sons are leaves!!</font>
02770 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->isLeaf() && <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->isLeaf());
02771 <font class="comment">// update pointers on vertex.</font>
02772 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->updateNearFarVertices();
02773 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->updateNearFarVertices();
02774
02775
02776 <font class="comment">// Bind FBase to a false face which indicate a bind 1/N.</font>
02777 <font class="comment">// This face prevent for "this" face to be merged...</font>
02778 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>= &<a class="code" href="classNL3D_1_1CTessFace.html#r0">CantMergeFace</a>;
02779
02780 <font class="comment">// Therefore, the vertex will be never deleted (since face not merged).</font>
02781 <font class="comment">// The only way to do this, is to unbind the patch from all (then the vertex is cloned), then the merge will be Ok.</font>
02782 }
02783 <font class="comment">// Else if rectangular.</font>
02784 <font class="keywordflow">else</font> <font class="keywordflow">if</font>(fmult0 || fmult1)
02785 {
02786 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *f;
02787 sint i;
02788
02789 <font class="comment">// Same reasoning for rectangular patchs, as above.</font>
02790 <font class="keywordflow">for</font>(i=0;i<2;i++)
02791 {
02792 <font class="keywordflow">if</font>(i==0)
02793 f= f0, fmult= fmult0;
02794 <font class="keywordflow">else</font>
02795 f= f1, fmult= fmult1;
02796 <font class="keywordflow">if</font>(fmult)
02797 {
02798 <font class="comment">// Update good Face neighbors (when I am a rectangle).</font>
02799 <font class="comment">//============================</font>
02800 <font class="comment">// Consider the fmult face as a square face.</font>
02801 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *toLeft, *toRight;
02802 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *fl=f->SonLeft, *fr=f->SonRight;
02803 toLeft= fmult->SonLeft;
02804 toRight= fmult->SonRight;
02805 <font class="comment">// Cross connection of sons.</font>
02806 fl->FLeft= toLeft;
02807 fr->FLeft= toRight;
02808 toLeft->changeNeighbor(&CTessFace::MultipleBindFace, fl);
02809 toRight->changeNeighbor(&CTessFace::MultipleBindFace, fr);
02810
02811 <font class="comment">// Update good vertex pointer.</font>
02812 <font class="comment">//============================</font>
02813 CTessVertex *vert= fmult->VBase;
02814
02815 <font class="comment">// Copy the good coordinate: those splitted (because of noise).</font>
02816 <font class="comment">// NB: this work too with rectangular patch (see tesselation rules).</font>
02817 vert->Pos= vert->StartPos= vert->EndPos= fl->VBase->EndPos;
02818 <font class="comment">// But delete the pointer.</font>
02819 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->getLandscape()->deleteTessVertex(fl->VBase);
02820 <font class="comment">// And update sons pointers, to good vertex (rectangular case, see tesselation rules).</font>
02821 fl->VBase= vert;
02822 fr->VLeft= vert;
02823 f->FBase->SonLeft->VRight= vert;
02824
02825 <font class="comment">// Point to a bind 1/N indicator.</font>
02826 f->FLeft= &<a class="code" href="classNL3D_1_1CTessFace.html#r0">CantMergeFace</a>;
02827 }
02828 }
02829 <font class="comment">// After all updates done. recompute centers of both sons 's faces, and update far vertices pointers.</font>
02830 <font class="keywordflow">for</font>(i=0;i<2;i++)
02831 {
02832 <font class="keywordflow">if</font>(i==0)
02833 f= f0;
02834 <font class="keywordflow">else</font>
02835 f= f1;
02836 <font class="comment">// Compute correct centers.</font>
02837 f->SonRight->computeSplitPoint();
02838 f->SonLeft->computeSplitPoint();
02839
02840 <font class="comment">// Update good Far vertex pointer.</font>
02841 <font class="comment">//================================</font>
02842 <font class="comment">// Because *->VBase may have been merged to the multiple bind face, Near/FarVertices which pointed on it must</font>
02843 <font class="comment">// be setup.</font>
02844 <font class="comment">// We do not have to propagate this vertex ptr change, since sons are leaves!!</font>
02845 <a class="code" href="debug_8h.html#a6">nlassert</a>(f->SonLeft->isLeaf() && f->SonRight->isLeaf());
02846 <font class="comment">// update pointers on vertex.</font>
02847 f->SonLeft->updateNearFarVertices();
02848 f->SonRight->updateNearFarVertices();
02849 }
02850 }
02851 }
02852
02853
02854 <font class="comment">// ***************************************************************************</font>
<a name="l02855"></a><a class="code" href="classNL3D_1_1CTessFace.html#a21">02855</a> <font class="keywordtype">void</font> CTessFace::updateBind()
02856 {
02857 <font class="comment">/*</font>
02858 <font class="comment"> Remind that updateBind() is called ONLY on the patch which is binded (not the neighbors).</font>
02859 <font class="comment"> Since updateBind() is called on the bintree, and that precedent propagated split may have occur, we may not</font>
02860 <font class="comment"> be a leaf here. So we are not sure that FLeft and FRight are good, and we doesn't need to update them (since we have</font>
02861 <font class="comment"> sons).</font>
02862 <font class="comment"> Also, since we are splitted, and correctly linked (this may not be the case in updateBindAndSplit()), FBase IS</font>
02863 <font class="comment"> correct. His FBase neighbor and him form a diamond. So we don't need to update him.</font>
02864 <font class="comment"></font>
02865 <font class="comment"> Same remarks for rectangular patchs.</font>
02866 <font class="comment"> */</font>
02867 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02868 {
02869 <font class="keywordtype">bool</font> splitWanted= <font class="keyword">false</font>;
02870 <font class="keywordflow">while</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a20">updateBindEdge</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>, splitWanted));
02871 <font class="comment">// FLeft and FRight pointers are only valid in Leaves nodes.</font>
02872 <font class="keywordflow">while</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a20">updateBindEdge</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>, splitWanted));
02873 <font class="keywordflow">while</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a20">updateBindEdge</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>, splitWanted));
02874 <font class="keywordflow">if</font>(splitWanted)
02875 <a class="code" href="classNL3D_1_1CTessFace.html#a22">updateBindAndSplit</a>();
02876 }
02877
02878
02879 <font class="comment">// Recurse to sons.</font>
02880 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02881 {
02882 <font class="comment">// Update bind of sons.</font>
02883 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->updateBind();
02884 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->updateBind();
02885 }
02886 }
02887
02888 <font class="comment">// ***************************************************************************</font>
02889 <font class="keyword">static</font> <font class="keyword">inline</font> <font class="keywordtype">bool</font> <a class="code" href="namespaceNL3D.html#a462">matchEdge</a>(<font class="keyword">const</font> CVector2f &uv0, <font class="keyword">const</font> CVector2f &uv1, <font class="keyword">const</font> CVector2f &uva, <font class="keyword">const</font> CVector2f &uvb)
02890 {
02891 <font class="keywordflow">if</font>(uv0==uva && uv1==uvb)
02892 <font class="keywordflow">return</font> <font class="keyword">true</font>;
02893 <font class="keywordflow">if</font>(uv0==uvb && uv1==uva)
02894 <font class="keywordflow">return</font> <font class="keyword">true</font>;
02895 <font class="keywordflow">return</font> <font class="keyword">false</font>;
02896 }
02897
02898 <font class="comment">// ***************************************************************************</font>
<a name="l02899"></a><a class="code" href="classNL3D_1_1CTessFace.html#a19">02899</a> CTessFace *CTessFace::linkTessFaceWithEdge(<font class="keyword">const</font> CVector2f &uv0, <font class="keyword">const</font> CVector2f &uv1, CTessFace *linkTo)
02900 {
02901 <font class="comment">// Compute 0,1 coords of 3 patch coords.</font>
02902 CVector2f vb( <a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>.getT() );
02903 CVector2f vl( <a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>.getT() );
02904 CVector2f vr( <a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>.getT() );
02905
02906 <font class="comment">// Search if one of the 3 edges of this triangle match the wanted edge.</font>
02907 <font class="comment">// Base Edge</font>
02908 <font class="keywordflow">if</font>(<a class="code" href="namespaceNL3D.html#a462">matchEdge</a>(uv0, uv1, vl, vr))
02909 {
02910 <font class="comment">// If leaf, check if unbound (else ptr is invalid)</font>
02911 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>==NULL || !<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>());
02912 <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>= linkTo;
02913 <font class="keywordflow">return</font> <font class="keyword">this</font>;
02914 }
02915 <font class="comment">// Left Edge</font>
02916 <font class="keywordflow">if</font>(<a class="code" href="namespaceNL3D.html#a462">matchEdge</a>(uv0, uv1, vb, vl))
02917 {
02918 <font class="comment">// If leaf, check if unbound (else ptr is invalid)</font>
02919 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>==NULL || !<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>());
02920 <a class="code" href="classNL3D_1_1CTessFace.html#z819_5">FLeft</a>= linkTo;
02921 <font class="keywordflow">return</font> <font class="keyword">this</font>;
02922 }
02923 <font class="comment">// Right Edge</font>
02924 <font class="keywordflow">if</font>(<a class="code" href="namespaceNL3D.html#a462">matchEdge</a>(uv0, uv1, vb, vr))
02925 {
02926 <font class="comment">// If leaf, check if unbound (else ptr is invalid)</font>
02927 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>==NULL || !<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02928 <a class="code" href="classNL3D_1_1CTessFace.html#z819_6">FRight</a>= linkTo;
02929 <font class="keywordflow">return</font> <font class="keyword">this</font>;
02930 }
02931
02932
02933 <font class="comment">// If not found here, recurs to children</font>
02934 <a class="code" href="classNL3D_1_1CTessFace.html#a0">CTessFace</a> *ret= NULL;
02935 <font class="keywordflow">if</font>( !<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>() )
02936 {
02937 ret= <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->linkTessFaceWithEdge(uv0, uv1, linkTo);
02938 <font class="comment">// if no found in this branch, recusr right branch.</font>
02939 <font class="keywordflow">if</font>(!ret)
02940 ret= <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->linkTessFaceWithEdge(uv0, uv1, linkTo);
02941 }
02942
02943 <font class="comment">// return the result from subBranchs</font>
02944 <font class="keywordflow">return</font> ret;
02945 }
02946
02947
02948 <font class="comment">// ***************************************************************************</font>
<a name="l02949"></a><a class="code" href="classNL3D_1_1CTessFace.html#a3">02949</a> <font class="keywordtype">bool</font> CTessFace::isRectangular()<font class="keyword"> const</font>
02950 <font class="keyword"></font>{
02951 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CTessFace.html#z819_13">Level</a><<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->SquareLimitLevel;
02952 }
02953
02954
02955
02956 <font class="comment">// ***************************************************************************</font>
02957 <font class="comment">// ***************************************************************************</font>
02958 <font class="comment">// For changePatchTexture.</font>
02959 <font class="comment">// ***************************************************************************</font>
02960 <font class="comment">// ***************************************************************************</font>
02961
02962
02963 <font class="comment">// ***************************************************************************</font>
<a name="l02964"></a><a class="code" href="classNL3D_1_1CTessFace.html#a26">02964</a> <font class="keywordtype">void</font> CTessFace::deleteTileUvs()
02965 {
02966 <font class="comment">// NB: NearVertices are removed from renderlist with deleteTileUv (called in releaseTileMaterial()).</font>
02967
02968 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
02969 {
02970 <font class="comment">// Must delete the materials of leaves first.</font>
02971 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->deleteTileUvs();
02972 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->deleteTileUvs();
02973 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->Level== <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel)
02974 {
02975 <font class="comment">// Square patch assumption: the sons are not of the same TileId/Patch.</font>
02976 <a class="code" href="debug_8h.html#a6">nlassert</a>(!<a class="code" href="classNL3D_1_1CTessFace.html#f0">sameTile</a>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>));
02977 <font class="comment">// release tiles.</font>
02978 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->releaseTileMaterial();
02979 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->releaseTileMaterial();
02980 }
02981 <font class="keywordflow">else</font> <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->Level > <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel)
02982 {
02983 <a class="code" href="debug_8h.html#a6">nlassert</a>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> || !<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf());
02984
02985 <font class="comment">// Delete Uv, only if not already done by the neighbor (ie neighbor has yet TileFaces!!).</font>
02986 <font class="comment">// But Always delete if neighbor exist and has not same tile as me.</font>
02987 <font class="comment">// NB: this work with rectangular neigbor patch, since sameTile() will return false if different patch.</font>
02988 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a> || !<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft->emptyTileFaces() || !<a class="code" href="classNL3D_1_1CTessFace.html#f0">sameTile</a>(<font class="keyword">this</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>))
02989 {
02990 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->deleteTileUv(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
02991 }
02992 <font class="comment">// In all case, must delete the tilefaces of those face.</font>
02993 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->deleteTileFaces();
02994 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->deleteTileFaces();
02995 <font class="comment">// For createTileUvs, it is important to mark those faces as NO TileMaterial.</font>
02996 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->TileMaterial= NULL;
02997 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->TileMaterial= NULL;
02998 }
02999 }
03000 <font class="keywordflow">else</font>
03001 {
03002 <font class="comment">// NB: this is done always BELOW tile creation (see above).</font>
03003 <font class="comment">// Do this only for tiles.</font>
03004 <font class="keywordflow">if</font>(TileMaterial)
03005 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->removeFaceFromTileRenderList(<font class="keyword">this</font>);
03006 }
03007
03008 }
03009
03010
03011 <font class="comment">// ***************************************************************************</font>
<a name="l03012"></a><a class="code" href="classNL3D_1_1CTessFace.html#a27">03012</a> <font class="keywordtype">void</font> CTessFace::recreateTileUvs()
03013 {
03014 <font class="comment">// NB: NearVertices are append to renderlist with allocTileUv (called in computeTileMaterial()/heritTileMaterial()).</font>
03015
03016 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
03017 {
03018 <font class="comment">// Must recreate the materials of parent first.</font>
03019
03020 <font class="comment">// There is no problem with rectangular patch, since tiles are always squares.</font>
03021 <font class="comment">// If new tile ....</font>
03022 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->Level==<a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel)
03023 {
03024 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->computeTileMaterial();
03025 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->computeTileMaterial();
03026 }
03027 <font class="comment">// else Tile herit.</font>
03028 <font class="keywordflow">else</font> <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->Level > <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->TileLimitLevel)
03029 {
03030 <a class="code" href="classNL3D_1_1CTessFace.html#c5">heritTileMaterial</a>();
03031 }
03032
03033 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->recreateTileUvs();
03034 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->recreateTileUvs();
03035 }
03036 <font class="keywordflow">else</font>
03037 {
03038 <font class="comment">// NB: this is done always AFTER tile creation (see above).</font>
03039 <font class="comment">// Do this only for tiles.</font>
03040 <font class="keywordflow">if</font>(TileMaterial)
03041 <a class="code" href="classNL3D_1_1CTessFace.html#z819_0">Patch</a>->appendFaceToTileRenderList(<font class="keyword">this</font>);
03042 }
03043 }
03044
03045
03046
03047 <font class="comment">// ***************************************************************************</font>
<a name="l03048"></a><a class="code" href="classNL3D_1_1CTessFace.html#c5">03048</a> <font class="keywordtype">void</font> CTessFace::heritTileMaterial()
03049 {
03050 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->TileMaterial= <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>;
03051 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->TileId= <a class="code" href="classNL3D_1_1CTessFace.html#z820_1">TileId</a>;
03052 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->buildTileFaces();
03053 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->copyTileUv(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>, <font class="keyword">this</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
03054 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->copyTileUv(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>, <font class="keyword">this</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>);
03055
03056 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->TileMaterial= <a class="code" href="classNL3D_1_1CTessFace.html#z820_2">TileMaterial</a>;
03057 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->TileId= <a class="code" href="classNL3D_1_1CTessFace.html#z820_1">TileId</a>;
03058 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->buildTileFaces();
03059 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->copyTileUv(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s1">IdUvLeft</a>, <font class="keyword">this</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>);
03060 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->copyTileUv(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s2">IdUvRight</a>, <font class="keyword">this</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
03061
03062 <font class="comment">// Create, or link to the tileUv.</font>
03063 <font class="comment">// Try to link to a neighbor TileUv.</font>
03064 <font class="comment">// Can only work iff exist, and iff FBase is same patch, and same TileId.</font>
03065 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>!=NULL && !<a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->isLeaf() && <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft->TileMaterial!=NULL && <a class="code" href="classNL3D_1_1CTessFace.html#f0">sameTile</a>(<font class="keyword">this</font>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>) )
03066 {
03067 <font class="comment">// Ok!! link to the (existing) TileUv.</font>
03068 <font class="comment">// FBase->SonLeft!=NULL since FBase->isLeaf()==false.</font>
03069 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->copyTileUv(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft, <a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
03070 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->copyTileUv(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_4">FBase</a>->SonLeft, <a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
03071 }
03072 <font class="keywordflow">else</font>
03073 {
03074 <font class="comment">// Allocate a new vertex, and copy it to SonLeft and SonRight.</font>
03075 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->allocTileUv(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
03076 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->copyTileUv(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>, <a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
03077
03078 <font class="comment">// Fill the new near vertex, with middle of Left/Right father.</font>
03079 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->heritTileUv(<font class="keyword">this</font>);
03080
03081 <font class="comment">// UVs are computed, may create and fill VB.</font>
03082 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->checkCreateFillTileVB(<a class="code" href="classNL3D_1_1CTessFace.html#z820_0s0">IdUvBase</a>);
03083 }
03084
03085 }
03086
03087
03088 <font class="comment">// ***************************************************************************</font>
03089 <font class="comment">// ***************************************************************************</font>
03090 <font class="comment">// For getTesselatedPos</font>
03091 <font class="comment">// ***************************************************************************</font>
03092 <font class="comment">// ***************************************************************************</font>
03093
03094
03095 <font class="comment">// ***************************************************************************</font>
<a name="l03096"></a><a class="code" href="classNL3D_1_1CTessFace.html#a28">03096</a> <font class="keywordtype">void</font> CTessFace::getTesselatedPos(<font class="keyword">const</font> CUV &uv, <font class="keywordtype">bool</font> verifInclusion, CVector &ret)
03097 {
03098 CVector uvPos(uv.U, uv.V, 0);
03099
03100 <font class="comment">// may verif if uv is In this triangle. supposed true if rectangular branch.</font>
03101 <font class="keywordflow">if</font>(verifInclusion && !(<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>() && !<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>()) )
03102 {
03103 CVector uvs[3];
03104 uvs[0].set( <a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>.getT(), 0);
03105 uvs[1].set( <a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>.getT(), 0);
03106 uvs[2].set( <a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>.getT(), 0);
03107 <font class="keywordflow">for</font>(sint i=0; i<3; i++)
03108 {
03109 CVector dUv= uvs[(i+1)%3] - uvs[i];
03110 CVector normalUv(dUv.y, -dUv.x, 0);
03111 <font class="comment">// if out this 2D plane, uv is out this triangle</font>
03112 <font class="keywordflow">if</font>(normalUv * (uvPos-uvs[i]) <0)
03113 <font class="keywordflow">return</font>;
03114 }
03115 }
03116
03117 <font class="comment">// compute tesselated pos in this face.</font>
03118 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
03119 <font class="comment">// ok, no more sons, let's do it.</font>
03120 <a class="code" href="classNL3D_1_1CTessFace.html#c10">computeTesselatedPos</a>(uv, ret);
03121 <font class="keywordflow">else</font>
03122 {
03123 <font class="comment">// must subdivide.</font>
03124 <font class="comment">// if we are rectangular (strange tesselation), must test in both leaves, else, choose only one.</font>
03125 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a3">isRectangular</a>())
03126 {
03127 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->getTesselatedPos(uv, <font class="keyword">true</font>, ret);
03128 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->getTesselatedPos(uv, <font class="keyword">true</font>, ret);
03129 }
03130 <font class="keywordflow">else</font>
03131 {
03132 <font class="comment">// Compute the uv plane which separate the 2 leaves.</font>
03133 CVector uvBase, uvMiddle;
03134 uvBase.set ( <a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>.getT(), 0);
03135 uvMiddle.set( <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->PVBase.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->PVBase.getT(), 0);
03136 CVector dUv= uvMiddle - uvBase;
03137 CVector normalUv(dUv.y, -dUv.x, 0);
03138 <font class="comment">// choose what leaf to recurs.</font>
03139 <font class="keywordflow">if</font>(normalUv * (uvPos - uvBase) <0)
03140 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->getTesselatedPos(uv, <font class="keyword">false</font>, ret);
03141 <font class="keywordflow">else</font>
03142 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->getTesselatedPos(uv, <font class="keyword">false</font>, ret);
03143
03144 }
03145 }
03146
03147 }
03148
03149
03150 <font class="comment">// ***************************************************************************</font>
<a name="l03151"></a><a class="code" href="classNL3D_1_1CTessFace.html#c10">03151</a> <font class="keywordtype">void</font> CTessFace::computeTesselatedPos(<font class="keyword">const</font> CUV &uv, CVector &ret)
03152 {
03153 CVector uvPos(uv.U, uv.V, 0);
03154
03155 <font class="comment">// compute the UV triangle of this face.</font>
03156 CTriangle uvTri;
03157 uvTri.V0.set( <a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_10">PVBase</a>.getT(), 0);
03158 uvTri.V1.set( <a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_11">PVLeft</a>.getT(), 0);
03159 uvTri.V2.set( <a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>.getS(), <a class="code" href="classNL3D_1_1CTessFace.html#z819_12">PVRight</a>.getT(), 0);
03160
03161 <font class="comment">// must interpolate the position with given UV, so compute XYZ gradients.</font>
03162 CVector Gx;
03163 CVector Gy;
03164 CVector Gz;
03165 <font class="comment">// If VertexProgram activated</font>
03166 <font class="keywordflow">if</font>( CLandscapeGlobals::VertexProgramEnabled )
03167 {
03168 <font class="comment">// then Must update geomorphed position because not done !!</font>
03169 <a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>->computeGeomPos();
03170 <a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>->computeGeomPos();
03171 <a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>->computeGeomPos();
03172 }
03173 <font class="comment">// NB: take geomorphed position.</font>
03174 uvTri.computeGradient(<a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>->Pos.x, <a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>->Pos.x, <a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>->Pos.x, Gx);
03175 uvTri.computeGradient(<a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>->Pos.y, <a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>->Pos.y, <a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>->Pos.y, Gy);
03176 uvTri.computeGradient(<a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>->Pos.z, <a class="code" href="classNL3D_1_1CTessFace.html#z819_2">VLeft</a>->Pos.z, <a class="code" href="classNL3D_1_1CTessFace.html#z819_3">VRight</a>->Pos.z, Gz);
03177
03178 <font class="comment">// Compute interpolated position.</font>
03179 ret= <a class="code" href="classNL3D_1_1CTessFace.html#z819_1">VBase</a>->Pos;
03180 uvPos-= uvTri.V0;
03181 ret.x+= Gx*uvPos;
03182 ret.y+= Gy*uvPos;
03183 ret.z+= Gz*uvPos;
03184
03185 }
03186
03187
03188 <font class="comment">// ***************************************************************************</font>
<a name="l03189"></a><a class="code" href="classNL3D_1_1CTessFace.html#a29">03189</a> <font class="keywordtype">void</font> CTessFace::appendTessellationLeaves(std::vector<const CTessFace*> &leaves)<font class="keyword"> const</font>
03190 <font class="keyword"></font>{
03191 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CTessFace.html#a2">isLeaf</a>())
03192 leaves.push_back(<font class="keyword">this</font>);
03193 <font class="keywordflow">else</font>
03194 {
03195 <a class="code" href="classNL3D_1_1CTessFace.html#z819_8">SonLeft</a>->appendTessellationLeaves(leaves);
03196 <a class="code" href="classNL3D_1_1CTessFace.html#z819_9">SonRight</a>->appendTessellationLeaves(leaves);
03197 }
03198 }
03199
03200
03201 } <font class="comment">// NL3D</font>
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