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class="qindex" href="pages.html">Related Pages</a> <a class="qindexRef" doxygen="_cgi:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center> +<hr><h1>landscape_vegetable_block.cpp</h1><a href="landscape__vegetable__block_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 +00007 <font class="comment">/* Copyright, 2001 Nevrax Ltd.</font> +00008 <font class="comment"> *</font> +00009 <font class="comment"> * This file is part of NEVRAX NEL.</font> +00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font> +00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font> +00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font> +00013 <font class="comment"> * any later version.</font> +00014 <font class="comment"></font> +00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font> +00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font> +00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font> +00018 <font class="comment"> * General Public License for more details.</font> +00019 <font class="comment"></font> +00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font> +00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font> +00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font> +00023 <font class="comment"> * MA 02111-1307, USA.</font> +00024 <font class="comment"> */</font> +00025 +00026 <font class="preprocessor">#include "<a class="code" href="std3d_8h.html">std3d.h</a>"</font> +00027 +00028 <font class="preprocessor">#include "<a class="code" href="landscape__vegetable__block_8h.html">3d/landscape_vegetable_block.h</a>"</font> +00029 <font class="preprocessor">#include "<a class="code" href="vegetable__manager_8h.html">3d/vegetable_manager.h</a>"</font> +00030 <font class="preprocessor">#include "<a class="code" href="vegetable__clip__block_8h.html">3d/vegetable_clip_block.h</a>"</font> +00031 <font class="preprocessor">#include "<a class="code" href="vegetable__instance__group_8h.html">3d/vegetable_instance_group.h</a>"</font> +00032 <font class="preprocessor">#include "<a class="code" href="patch_8h.html">3d/patch.h</a>"</font> +00033 <font class="preprocessor">#include "<a class="code" href="bezier__patch_8h.html">3d/bezier_patch.h</a>"</font> +00034 +00035 +00036 <font class="keyword">using</font> <font class="keyword">namespace </font>std; +00037 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC; +00038 +00039 +00040 <font class="keyword">namespace </font>NL3D +00041 { +00042 +00043 +00044 <font class="comment">// ***************************************************************************</font> +00045 <font class="comment">/*</font> +00046 <font class="comment"> Distances type squared.</font> +00047 <font class="comment">*/</font> +<a name="l00048"></a><a class="code" href="classNL3D_1_1CLVBSqrDistLUT.html">00048</a> <font class="keyword">class </font>CLVBSqrDistLUT +00049 { +00050 <font class="keyword">public</font>: +00051 <font class="keyword">static</font> <font class="keywordtype">float</font> <a class="code" href="classNL3D_1_1CLVBSqrDistLUT.html#p0">Array</a>[<a class="code" href="vegetable__def_8h.html#a7">NL3D_VEGETABLE_BLOCK_NUMDIST</a>+1]; +00052 +<a name="l00053"></a><a class="code" href="classNL3D_1_1CLVBSqrDistLUT.html#a0">00053</a> <a class="code" href="classNL3D_1_1CLVBSqrDistLUT.html#a0">CLVBSqrDistLUT</a>() +00054 { +00055 <font class="comment">// 0, 10, 20, 30, 40, 50</font> +00056 <font class="keywordflow">for</font>(uint i=0;i<<a class="code" href="vegetable__def_8h.html#a7">NL3D_VEGETABLE_BLOCK_NUMDIST</a>+1;i++) +00057 { +00058 <a class="code" href="classNL3D_1_1CLVBSqrDistLUT.html#p0">Array</a>[i]= i*<a class="code" href="vegetable__def_8h.html#a8">NL3D_VEGETABLE_BLOCK_ELTDIST</a>; +00059 <a class="code" href="classNL3D_1_1CLVBSqrDistLUT.html#p0">Array</a>[i]= <a class="code" href="namespaceNLMISC.html#a214">sqr</a>(<a class="code" href="classNL3D_1_1CLVBSqrDistLUT.html#p0">Array</a>[i]); +00060 } +00061 } +00062 +00063 }; +00064 +00065 +00066 CLVBSqrDistLUT <a class="code" href="namespaceNL3D.html#a85">NL3D_InitSqrDistLUT</a>; +<a name="l00067"></a><a class="code" href="classNL3D_1_1CLVBSqrDistLUT.html#p0">00067</a> <font class="keywordtype">float</font> CLVBSqrDistLUT::Array[<a class="code" href="vegetable__def_8h.html#a7">NL3D_VEGETABLE_BLOCK_NUMDIST</a>+1]; +00068 +00069 +00070 <font class="comment">// ***************************************************************************</font> +<a name="l00071"></a><a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#a0">00071</a> CLandscapeVegetableBlock::CLandscapeVegetableBlock() +00072 { +00073 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o1">_VegetableClipBlock</a>= NULL; +00074 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o5">_CurDistType</a>= <a class="code" href="vegetable__def_8h.html#a7">NL3D_VEGETABLE_BLOCK_NUMDIST</a>; +00075 +00076 <font class="keywordflow">for</font>(uint j=0;j<<a class="code" href="tess__block_8h.html#a1">NL3D_TESSBLOCK_TILESIZE</a>;j++) +00077 { +00078 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o6">_VegetableSortBlock</a>[j]= NULL; +00079 <font class="keywordflow">for</font>(uint i=0;i<<a class="code" href="vegetable__def_8h.html#a7">NL3D_VEGETABLE_BLOCK_NUMDIST</a>;i++) +00080 { +00081 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o7">_VegetableIG</a>[j][i]= NULL; +00082 } +00083 } +00084 } +00085 +00086 +00087 +00088 <font class="comment">// ***************************************************************************</font> +<a name="l00089"></a><a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#a1">00089</a> <font class="keywordtype">void</font> CLandscapeVegetableBlock::init(<font class="keyword">const</font> CVector &center, CVegetableManager *vegetManager, +00090 CVegetableClipBlock *vegetableClipBlock, CPatch *patch, uint ts, uint tt, CTessList<CLandscapeVegetableBlock> &vblist) +00091 { +00092 <a class="code" href="debug_8h.html#a6">nlassert</a>(patch); +00093 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o0">_Center</a>= center; +00094 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o1">_VegetableClipBlock</a>= vegetableClipBlock; +00095 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o2">_Patch</a>= patch; +00096 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o3">_Ts</a>= ts; +00097 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o4">_Tt</a>= tt; +00098 +00099 <font class="comment">// Create the Vegetable SortBlocks</font> +00100 sint tms,tmt; +00101 <font class="comment">// for all tiles</font> +00102 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="tess__block_8h.html#a1">NL3D_TESSBLOCK_TILESIZE</a>==4); +00103 <font class="keywordflow">for</font>(tmt= <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o4">_Tt</a>; tmt<<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o4">_Tt</a>+2; tmt++) +00104 { +00105 <font class="keywordflow">for</font>(tms= <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o3">_Ts</a>; tms<<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o3">_Ts</a>+2; tms++) +00106 { +00107 <font class="comment">// compute approximate center of the tile.</font> +00108 <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>= (tms + 0.5f) / <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o2">_Patch</a>->getOrderS(); +00109 <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>= (tmt + 0.5f) / <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o2">_Patch</a>->getOrderT(); +00110 CBezierPatch *bpatch= <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o2">_Patch</a>->unpackIntoCache(); +00111 CVector center= bpatch->eval(<a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>); +00112 +00113 <font class="comment">// create the sortBlock. NB: very approximate SortBlock radius....</font> +00114 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o6">_VegetableSortBlock</a>[(tmt-<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o4">_Tt</a>)*2 + (tms-<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o3">_Ts</a>)]= vegetManager->createSortBlock(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o1">_VegetableClipBlock</a>, center, <a class="code" href="landscape__def_8h.html#a12">NL3D_PATCH_TILE_RADIUS</a>); +00115 } +00116 } +00117 +00118 <font class="comment">// append to list.</font> +00119 vblist.append(<font class="keyword">this</font>); +00120 } +00121 +00122 +00123 <font class="comment">// ***************************************************************************</font> +<a name="l00124"></a><a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#a2">00124</a> <font class="keywordtype">void</font> CLandscapeVegetableBlock::release(CVegetableManager *vegeManager, CTessList<CLandscapeVegetableBlock> &vblist) +00125 { +00126 <font class="comment">// release all Igs, and all Sbs.</font> +00127 <font class="keywordflow">for</font>(uint j=0;j<<a class="code" href="tess__block_8h.html#a1">NL3D_TESSBLOCK_TILESIZE</a>;j++) +00128 { +00129 <font class="comment">// release IGs first.</font> +00130 <font class="keywordflow">for</font>(uint i=0;i<<a class="code" href="vegetable__def_8h.html#a7">NL3D_VEGETABLE_BLOCK_NUMDIST</a>;i++) +00131 { +00132 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o7">_VegetableIG</a>[j][i]) +00133 { +00134 vegeManager->deleteIg(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o7">_VegetableIG</a>[j][i]); +00135 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o7">_VegetableIG</a>[j][i]= NULL; +00136 } +00137 } +00138 +00139 <font class="comment">// release SB</font> +00140 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o6">_VegetableSortBlock</a>[j]) +00141 { +00142 vegeManager->deleteSortBlock(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o6">_VegetableSortBlock</a>[j]); +00143 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o6">_VegetableSortBlock</a>[j]= NULL; +00144 } +00145 } +00146 +00147 <font class="comment">// reset state.</font> +00148 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o5">_CurDistType</a>= <a class="code" href="vegetable__def_8h.html#a7">NL3D_VEGETABLE_BLOCK_NUMDIST</a>; +00149 +00150 <font class="comment">// remove from list.</font> +00151 vblist.remove(<font class="keyword">this</font>); +00152 } +00153 +00154 <font class="comment">// ***************************************************************************</font> +<a name="l00155"></a><a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#a3">00155</a> <font class="keywordtype">void</font> CLandscapeVegetableBlock::update(<font class="keyword">const</font> CVector &viewCenter, CVegetableManager *vegeManager) +00156 { +00157 <font class="keywordtype">float</font> sqrDist= (viewCenter-<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o0">_Center</a>).sqrnorm(); +00158 +00159 <font class="comment">// compute new distance type. Incremental mode.</font> +00160 uint newDistType= <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o5">_CurDistType</a>; +00161 <font class="keywordflow">while</font>(sqrDist<CLVBSqrDistLUT::Array[newDistType]) +00162 { +00163 newDistType--; +00164 } +00165 <font class="keywordflow">while</font>(newDistType<NL3D_VEGETABLE_BLOCK_NUMDIST && sqrDist>CLVBSqrDistLUT::Array[newDistType+1]) +00166 { +00167 newDistType++; +00168 } +00169 <font class="comment">/*</font> +00170 <font class="comment"> NB: to test but may be better than </font> +00171 <font class="comment"> newDistType= floor()(delta.norm() / NL3D_VEGETABLE_BLOCK_ELTDIST);</font> +00172 <font class="comment"> */</font> +00173 +00174 +00175 <font class="comment">// Change of distance type??</font> +00176 <font class="keywordflow">if</font>(newDistType!=<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o5">_CurDistType</a>) +00177 { +00178 <font class="comment">// Erase or create IGs.</font> +00179 <font class="keywordflow">if</font>(newDistType><a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o5">_CurDistType</a>) +00180 { +00181 <font class="comment">// For all tiles</font> +00182 <font class="keywordflow">for</font>(uint j=0;j<<a class="code" href="tess__block_8h.html#a1">NL3D_TESSBLOCK_TILESIZE</a>;j++) +00183 { +00184 <font class="comment">// Erase no more needed Igs.</font> +00185 <font class="keywordflow">for</font>(uint i=<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o5">_CurDistType</a>; i<newDistType; i++) +00186 { +00187 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o7">_VegetableIG</a>[j][i]) +00188 { +00189 vegeManager->deleteIg(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o7">_VegetableIG</a>[j][i]); +00190 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o7">_VegetableIG</a>[j][i]= NULL; +00191 } +00192 } +00193 +00194 <font class="comment">// update the sort block for this tile</font> +00195 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o6">_VegetableSortBlock</a>[j]->updateSortBlock(*vegeManager); +00196 } +00197 } +00198 <font class="keywordflow">else</font> +00199 { +00200 <font class="comment">// Create a context for creation.</font> +00201 CLandscapeVegetableBlockCreateContext ctx; +00202 ctx.init(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o2">_Patch</a>, <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o3">_Ts</a>, <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o4">_Tt</a>); +00203 +00204 <font class="comment">// create new Igs, for all tiles</font> +00205 <font class="keywordflow">for</font>(uint i=newDistType; i<<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o5">_CurDistType</a>; i++) +00206 { +00207 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#c0">createVegetableIGForDistType</a>(i, vegeManager, ctx); +00208 } +00209 +00210 <font class="comment">// For all tiles</font> +00211 <font class="keywordflow">for</font>(uint j=0;j<<a class="code" href="tess__block_8h.html#a1">NL3D_TESSBLOCK_TILESIZE</a>;j++) +00212 { +00213 <font class="comment">// update the sort block for this tile</font> +00214 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o6">_VegetableSortBlock</a>[j]->updateSortBlock(*vegeManager); +00215 } +00216 } +00217 +00218 <font class="comment">// copy new dist type.</font> +00219 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o5">_CurDistType</a>= newDistType; +00220 } +00221 +00222 +00223 } +00224 +00225 +00226 <font class="comment">// ***************************************************************************</font> +<a name="l00227"></a><a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#c0">00227</a> <font class="keywordtype">void</font> CLandscapeVegetableBlock::createVegetableIGForDistType(uint i, CVegetableManager *vegeManager, +00228 CLandscapeVegetableBlockCreateContext &vbCreateCtx) +00229 { +00230 <font class="comment">// check</font> +00231 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="tess__block_8h.html#a1">NL3D_TESSBLOCK_TILESIZE</a>==4); +00232 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o7">_VegetableIG</a>[0][i]==NULL); +00233 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o7">_VegetableIG</a>[1][i]==NULL); +00234 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o7">_VegetableIG</a>[2][i]==NULL); +00235 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o7">_VegetableIG</a>[3][i]==NULL); +00236 +00237 <font class="comment">// Create vegetables instances per tile_material.</font> +00238 sint tms,tmt; +00239 <font class="comment">// for all tiles</font> +00240 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="tess__block_8h.html#a1">NL3D_TESSBLOCK_TILESIZE</a>==4); +00241 <font class="keywordflow">for</font>(tmt= <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o4">_Tt</a>; tmt<<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o4">_Tt</a>+2; tmt++) +00242 { +00243 <font class="keywordflow">for</font>(tms= <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o3">_Ts</a>; tms<<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o3">_Ts</a>+2; tms++) +00244 { +00245 uint tileId= tms-<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o3">_Ts</a> + (tmt-<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o4">_Tt</a>)*2; +00246 +00247 <font class="comment">// create the instance group in the good sortBlock</font> +00248 CVegetableInstanceGroup *vegetIg= vegeManager->createIg(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o6">_VegetableSortBlock</a>[tileId]); +00249 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o7">_VegetableIG</a>[tileId][i]= vegetIg; +00250 +00251 <font class="comment">// generate </font> +00252 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o2">_Patch</a>->generateTileVegetable(vegetIg, i, tms, tmt, vbCreateCtx); +00253 +00254 <font class="comment">// If the ig is empty, delete him. This optimize rendering because no unusefull ig are </font> +00255 <font class="comment">// tested for rendering. This speed up some 1/10 of ms...</font> +00256 <font class="keywordflow">if</font>(vegetIg->isEmpty()) +00257 { +00258 vegeManager->deleteIg(vegetIg); +00259 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlock.html#o7">_VegetableIG</a>[tileId][i]= NULL; +00260 } +00261 +00262 <font class="comment">// NB: vegtable SortBlock is updated in CLandscapeVegetableBlock::update() after</font> +00263 } +00264 } +00265 +00266 } +00267 +00268 +00269 <font class="comment">// ***************************************************************************</font> +00270 <font class="comment">// ***************************************************************************</font> +00271 <font class="comment">// CLandscapeVegetableIGCreateContext</font> +00272 <font class="comment">// ***************************************************************************</font> +00273 <font class="comment">// ***************************************************************************</font> +00274 +00275 +00276 <font class="comment">// ***************************************************************************</font> +<a name="l00277"></a><a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#a0">00277</a> CLandscapeVegetableBlockCreateContext::CLandscapeVegetableBlockCreateContext() +00278 { +00279 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o1">_Patch</a>= NULL; +00280 } +00281 +00282 +00283 <font class="comment">// ***************************************************************************</font> +<a name="l00284"></a><a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#a1">00284</a> <font class="keywordtype">void</font> CLandscapeVegetableBlockCreateContext::init(CPatch *patch, uint ts, uint tt) +00285 { +00286 <a class="code" href="debug_8h.html#a6">nlassert</a>(patch); +00287 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o0">_Empty</a>= <font class="keyword">true</font>; +00288 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o1">_Patch</a>= patch; +00289 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o2">_Ts</a>= ts; +00290 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o3">_Tt</a>= tt; +00291 } +00292 +00293 +00294 <font class="comment">// ***************************************************************************</font> +<a name="l00295"></a><a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#a2">00295</a> <font class="keywordtype">void</font> CLandscapeVegetableBlockCreateContext::eval(uint ts, uint tt, <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>, <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>, CVector &pos) +00296 { +00297 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="tess__block_8h.html#a1">NL3D_TESSBLOCK_TILESIZE</a>==4); +00298 +00299 <font class="comment">// If never created, do it now</font> +00300 <font class="comment">// ==================</font> +00301 <font class="keywordflow">if</font>(_Empty) +00302 { +00303 <font class="comment">// Eval Position and normals for the 9 vertices (around the 2x2 tiles)</font> +00304 <font class="keywordflow">for</font>(uint j=0; j<3;j++) +00305 { +00306 <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>= (float)(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o3">_Tt</a>+j)/<a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o1">_Patch</a>->getOrderT(); +00307 <font class="keywordflow">for</font>(uint i=0; i<3;i++) +00308 { +00309 <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>= (float)(<a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o2">_Ts</a>+i)/<a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o1">_Patch</a>->getOrderS(); +00310 <font class="comment">// eval position.</font> +00311 <font class="comment">// use computeVertex() and not bpatch->eval() because vegetables must follow the </font> +00312 <font class="comment">// noise (at least at tile precision...). It is slower but necessary.</font> +00313 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o4">_Pos</a>[j*3+i]= <a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o1">_Patch</a>->computeVertex(<a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>); +00314 } +00315 } +00316 +00317 <font class="comment">// Ok, it's done</font> +00318 <a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o0">_Empty</a>= <font class="keyword">false</font>; +00319 } +00320 +00321 +00322 <font class="comment">// Eval, with simple bilinear</font> +00323 <font class="comment">// ==================</font> +00324 <a class="code" href="debug_8h.html#a6">nlassert</a>(ts==<a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o2">_Ts</a> || ts==<a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o2">_Ts</a>+1); +00325 <a class="code" href="debug_8h.html#a6">nlassert</a>(tt==<a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o3">_Tt</a> || tt==<a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o3">_Tt</a>+1); +00326 uint ds= ts-<a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o2">_Ts</a>; +00327 uint dt= tt-<a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o3">_Tt</a>; +00328 <font class="comment">// Indices.</font> +00329 uint v00= dt*3 + ds; +00330 uint v10= v00 + 1; +00331 uint v01= v00 + 3; +00332 uint v11= v00 + 4; +00333 <font class="comment">// BiLinearFactor.</font> +00334 <font class="keywordtype">float</font> dxdy= (1-<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>)*(1-<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>); +00335 <font class="keywordtype">float</font> dx2dy= <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>*(1-<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>); +00336 <font class="keywordtype">float</font> dxdy2= (1-<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>)*<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>; +00337 <font class="keywordtype">float</font> dx2dy2= <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>*<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>; +00338 +00339 <font class="comment">// Compute Pos.</font> +00340 pos = <a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o4">_Pos</a>[v00] * dxdy; +00341 pos+= <a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o4">_Pos</a>[v10] * dx2dy; +00342 pos+= <a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o4">_Pos</a>[v01] * dxdy2; +00343 pos+= <a class="code" href="classNL3D_1_1CLandscapeVegetableBlockCreateContext.html#o4">_Pos</a>[v11] * dx2dy2; +00344 } +00345 +00346 +00347 } <font class="comment">// NL3D</font> +</pre></div> + +<!-- footer --> +<BR><FONT Size=+5> </FONT> +</TD> +<TD WIDTH=15><IMG SRC=http://www.nevrax.org/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD> +</TR> +</TABLE> +</BODY> +</HTML> |