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<hr><h1>mini_col.cpp</h1><a href="mini__col_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2000 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="mini__col_8h.html">3d/mini_col.h</a>"</font>
00029 <font class="preprocessor">#include "<a class="code" href="aabbox_8h.html">nel/misc/aabbox.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="3d_2quad__grid_8h.html">3d/quad_grid.h</a>"</font>
00031 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00032 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
00033
00034
00035 <font class="keyword">namespace </font>NL3D
00036 {
00037
00038 <font class="keyword">static</font> <font class="keyword">const</font> sint <a class="code" href="namespaceNL3D.html#a157">QuadDepth</a>= 10;
00039
00040
00041 <font class="comment">// Element for grid lookup.</font>
00042 <font class="keyword">static</font> <font class="keyword">const</font> sint <a class="code" href="namespaceNL3D.html#a158">GridSize</a>=512;
00043 <font class="keyword">static</font> <font class="keyword">const</font> <font class="keywordtype">float</font> <a class="code" href="namespaceNL3D.html#a159">GridEltSize</a>=2;
00044
00045
00046 <font class="comment">// ***************************************************************************</font>
<a name="l00047"></a><a class="code" href="classNL3D_1_1CMiniCol.html#a0">00047</a> CMiniCol::CMiniCol()
00048 {
00049 <a class="code" href="classNL3D_1_1CMiniCol.html#o1">_RadMin</a>= 100;
00050 <a class="code" href="classNL3D_1_1CMiniCol.html#o2">_RadMax</a>= 125;
00051 <a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.create(<a class="code" href="namespaceNL3D.html#a158">GridSize</a>, <a class="code" href="namespaceNL3D.html#a159">GridEltSize</a>);
00052 }
00053
00054
00055 <font class="comment">// ***************************************************************************</font>
<a name="l00056"></a><a class="code" href="classNL3D_1_1CMiniCol.html#c0">00056</a> <font class="keywordtype">void</font> CMiniCol::addFaces(<font class="keyword">const</font> std::vector<CTriangle> &faces, uint16 zoneId, uint16 patchId)
00057 {
00058 <font class="keywordflow">for</font>(sint i=0;i<(sint)faces.size();i++)
00059 {
00060 <font class="keyword">const</font> CTriangle &f= faces[i];
00061 CAABBox box;
00062 box.setCenter(f.V0);
00063 box.extend(f.V1);
00064 box.extend(f.V2);
00065 CFace node;
00066 node.Face= f;
00067 node.Plane.make(f.V0, f.V1, f.V2);
00068 node.ZoneId= zoneId;
00069 node.PatchId=patchId;
00070 <a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.insert(box.getMin(), box.getMax(), node);
00071 }
00072 }
00073
00074
00075 <font class="comment">// ***************************************************************************</font>
<a name="l00076"></a><a class="code" href="classNL3D_1_1CMiniCol.html#c1">00076</a> <font class="keywordtype">void</font> CMiniCol::addLandscapePart(uint16 zoneId, uint16 patchId)
00077 {
00078 vector<CTriangle> faces;
00079 <a class="code" href="classNL3D_1_1CMiniCol.html#o0">_Landscape</a>->buildCollideFaces(zoneId, patchId, faces);
00080 <a class="code" href="classNL3D_1_1CMiniCol.html#c0">addFaces</a>(faces, zoneId, patchId);
00081 }
00082
00083
00084 <font class="comment">// ***************************************************************************</font>
<a name="l00085"></a><a class="code" href="classNL3D_1_1CMiniCol.html#c2">00085</a> <font class="keywordtype">void</font> CMiniCol::removeLandScapePart(uint16 zoneId, uint16 patchId, <font class="keyword">const</font> CBSphere &sphere)
00086 {
00087 <font class="comment">// Build the AAbox which englobe the bsphere of the patch.</font>
00088 CAABBox bb;
00089 bb.setCenter(sphere.Center);
00090 <font class="keywordtype">float</font> <a class="code" href="namespaceNLAISCRIPT.html#a20">l</a>= sphere.Radius;
00091 bb.setHalfSize(CVector(<a class="code" href="namespaceNLAISCRIPT.html#a20">l</a>,<a class="code" href="namespaceNLAISCRIPT.html#a20">l</a>,<a class="code" href="namespaceNLAISCRIPT.html#a20">l</a>));
00092
00093 <font class="comment">// For optimisation, select only faces which are IN the bbox of the patch.</font>
00094 <a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.select(bb.getMin(), bb.getMax());
00095 CQuadGrid<CFace>::CIterator iFace;
00096 <font class="keywordflow">for</font>(iFace= <a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.begin();iFace!=<a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.end();)
00097 {
00098 <font class="keywordflow">if</font>((*iFace).isFromPatch(zoneId, patchId))
00099 iFace= <a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.erase(iFace);
00100 <font class="keywordflow">else</font>
00101 iFace++;
00102 }
00103 }
00104
00105
00106 <font class="comment">// ***************************************************************************</font>
<a name="l00107"></a><a class="code" href="classNL3D_1_1CMiniCol.html#a1">00107</a> <font class="keywordtype">void</font> CMiniCol::init(CLandscape *land, <font class="keywordtype">float</font> radMin, <font class="keywordtype">float</font> radDelta)
00108 {
00109 <a class="code" href="classNL3D_1_1CMiniCol.html#o0">_Landscape</a>= land;
00110 <a class="code" href="classNL3D_1_1CMiniCol.html#o1">_RadMin</a>= radMin;
00111 <a class="code" href="classNL3D_1_1CMiniCol.html#o2">_RadMax</a>= radMin+radDelta;
00112 }
00113
00114
00115 <font class="comment">// ***************************************************************************</font>
<a name="l00116"></a><a class="code" href="classNL3D_1_1CMiniCol.html#a2">00116</a> <font class="keywordtype">void</font> CMiniCol::addZone(uint16 zoneId)
00117 {
00118 CZoneIdent newZone;
00119
00120 <font class="comment">// landscape must have been inited.</font>
00121 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CMiniCol.html#o0">_Landscape</a>);
00122 <font class="keyword">const</font> CZone *zone= <a class="code" href="classNL3D_1_1CMiniCol.html#o0">_Landscape</a>->getZone(zoneId);
00123 <font class="comment">// zone must be loaded into landscape.</font>
00124 <a class="code" href="debug_8h.html#a6">nlassert</a>(zone);
00125
00126 <font class="comment">// Fill the newzone.</font>
00127 newZone.ZoneId= zoneId;
00128 newZone.Sphere.Center= zone->getZoneBB().getCenter();
00129 newZone.Sphere.Radius= zone->getZoneBB().getRadius();
00130 newZone.Patchs.resize(zone->getNumPatchs());
00131 <font class="keywordflow">for</font>(sint i=0;i<zone->getNumPatchs();i++)
00132 {
00133 <font class="keyword">const</font> CPatch &pa= *zone->getPatch(i);
00134 newZone.Patchs[i].Sphere= pa.getBSphere();
00135 }
00136
00137 <font class="comment">// Add it to the set (if not already done...).</font>
00138 <a class="code" href="classNL3D_1_1CMiniCol.html#o4">_Zones</a>.insert(newZone);
00139 }
00140
00141
00142 <font class="comment">// ***************************************************************************</font>
<a name="l00143"></a><a class="code" href="classNL3D_1_1CMiniCol.html#a3">00143</a> <font class="keywordtype">void</font> CMiniCol::removeZone(uint16 zoneId)
00144 {
00145 CZoneIdent delZone;
00146
00147
00148 <font class="comment">// First, delete all patch from the grid.</font>
00149 <font class="comment">//=======================================</font>
00150 <font class="comment">// Fill the key part only.</font>
00151 delZone.ZoneId= zoneId;
00152 <font class="comment">// Find the zone (or quit).</font>
00153 TZoneSet::iterator itZone;
00154 itZone= <a class="code" href="classNL3D_1_1CMiniCol.html#o4">_Zones</a>.find(delZone);
00155 <font class="keywordflow">if</font>(itZone==<a class="code" href="classNL3D_1_1CMiniCol.html#o4">_Zones</a>.end())
00156 <font class="keywordflow">return</font>;
00157
00158 CZoneIdent &zone= const_cast<CZoneIdent&>(*itZone);
00159 <font class="keywordflow">for</font>(sint i=0;i<(sint)zone.Patchs.size();i++)
00160 {
00161 CPatchIdent &pa= zone.Patchs[i];
00162 <font class="keywordflow">if</font>(pa.Inserted)
00163 {
00164 <font class="comment">// Reject the patch.</font>
00165 <a class="code" href="classNL3D_1_1CMiniCol.html#c2">removeLandScapePart</a>(zone.ZoneId, i, pa.Sphere);
00166 pa.Inserted= <font class="keyword">false</font>;
00167 zone.NPatchInserted--;
00168 }
00169 }
00170
00171 <font class="comment">// Then, delete it.</font>
00172 <font class="comment">//=================</font>
00173 <a class="code" href="classNL3D_1_1CMiniCol.html#o4">_Zones</a>.erase(delZone);
00174
00175 }
00176
00177
00178 <font class="comment">// ***************************************************************************</font>
<a name="l00179"></a><a class="code" href="classNL3D_1_1CMiniCol.html#a4">00179</a> <font class="keywordtype">void</font> CMiniCol::setCenter(<font class="keyword">const</font> CVector& center)
00180 {
00181 CBSphere BMin(center, <a class="code" href="classNL3D_1_1CMiniCol.html#o1">_RadMin</a>), BMax(center, <a class="code" href="classNL3D_1_1CMiniCol.html#o2">_RadMax</a>);
00182
00183 <font class="comment">// For all zones, test if must insert patchs..</font>
00184 TZoneSet::iterator itZone;
00185 <font class="keywordflow">for</font>(itZone= <a class="code" href="classNL3D_1_1CMiniCol.html#o4">_Zones</a>.begin();itZone!=<a class="code" href="classNL3D_1_1CMiniCol.html#o4">_Zones</a>.end();itZone++)
00186 {
00187 CZoneIdent &zone= const_cast<CZoneIdent&>(*itZone);
00188
00189 <font class="comment">// Tests must be done in 2D...</font>
00190 BMin.Center.z= zone.Sphere.Center.z;
00191 BMax.Center.z= zone.Sphere.Center.z;
00192
00193 <font class="comment">// Must test first if the zone is IN the area.</font>
00194 <font class="comment">//=============================================</font>
00195 <font class="keywordtype">bool</font> zoneIn= <font class="keyword">false</font>;
00196 <font class="keywordflow">if</font>(zone.NPatchInserted==0)
00197 {
00198 <font class="keywordflow">if</font>(BMin.intersect(zone.Sphere))
00199 zoneIn= <font class="keyword">true</font>;
00200 }
00201 <font class="keywordflow">else</font>
00202 zoneIn= <font class="keyword">true</font>;
00203
00204 <font class="comment">// Then for all patchs, must test if the patch must be inserted, or rejected.</font>
00205 <font class="comment">//=============================================</font>
00206 <font class="keywordflow">if</font>(zoneIn)
00207 {
00208 <font class="keywordflow">for</font>(sint i=0;i<(sint)zone.Patchs.size();i++)
00209 {
00210 CPatchIdent &pa= zone.Patchs[i];
00211
00212 <font class="comment">// Tests must be done in 2D...</font>
00213 BMin.Center.z= pa.Sphere.Center.z;
00214 BMax.Center.z= pa.Sphere.Center.z;
00215
00216 <font class="keywordflow">if</font>(pa.Inserted)
00217 {
00218 <font class="comment">// Reject the patch, if entirely OUT the max radius.</font>
00219 <font class="keywordflow">if</font>(!BMax.intersect(pa.Sphere))
00220 {
00221 <a class="code" href="classNL3D_1_1CMiniCol.html#c2">removeLandScapePart</a>(zone.ZoneId, i, pa.Sphere);
00222 pa.Inserted= <font class="keyword">false</font>;
00223 zone.NPatchInserted--;
00224 }
00225 }
00226 <font class="keywordflow">else</font>
00227 {
00228 <font class="comment">// Insert the pacth, if only partially IN the min radius.</font>
00229 <font class="keywordflow">if</font>(BMin.intersect(pa.Sphere))
00230 {
00231 <a class="code" href="classNL3D_1_1CMiniCol.html#c1">addLandscapePart</a>(zone.ZoneId, i);
00232 pa.Inserted= <font class="keyword">true</font>;
00233 zone.NPatchInserted++;
00234 }
00235 }
00236 }
00237 }
00238 }
00239 }
00240
00241
00242 <font class="comment">// ***************************************************************************</font>
<a name="l00243"></a><a class="code" href="classNL3D_1_1CMiniCol.html#a6">00243</a> <font class="keywordtype">bool</font> CMiniCol::snapToGround(CVector &pos, <font class="keywordtype">float</font> hup, <font class="keywordtype">float</font> hbot)
00244 {
00245 CVector b1,b2;
00246 <font class="keywordtype">bool</font> found=<font class="keyword">false</font>;
00247 <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>;
00248
00249
00250 <font class="comment">// Select quad nodes which contains pos.</font>
00251 b1=b2=pos;
00252 b1.z-= hbot;
00253 b2.z+= hup;
00254 <font class="comment">// Select.</font>
00255 <a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.select(b1,b2);
00256
00257 <font class="comment">// For each face, test if it is under pos, then test if height is correct.</font>
00258 CQuadGrid<CFace>::CIterator iFace;
00259 <font class="keywordflow">for</font>(iFace= <a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.begin();iFace!=<a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.end();iFace++)
00260 {
00261 CTriangle &pFace= (*iFace).Face;
00262 CPlane &pPlane= (*iFace).Plane;
00263 <font class="comment">// Order is important.</font>
00264 CVector &p0= pFace.V0;
00265 CVector &p1= pFace.V1;
00266 CVector &p2= pFace.V2;
00267
00268 <font class="comment">// TOIMP: This is VERY SLOW!!! (hope that the quadtree will help, but it still very slow...).</font>
00269
00270 <font class="comment">// Yoyo Debug, test, if the point may be IN the bbox.</font>
00271 <font class="comment">/*CAABBox bbFace;</font>
00272 <font class="comment"> bbFace.setCenter(p0);</font>
00273 <font class="comment"> bbFace.extend(p1);</font>
00274 <font class="comment"> bbFace.extend(p2);</font>
00275 <font class="comment"> CVector bext=p0;</font>
00276 <font class="comment"> bext.z= maxof(p0.z, p1.z, p2.z)+hbot;</font>
00277 <font class="comment"> bbFace.extend(bext);</font>
00278 <font class="comment"> bext.z= minof(p0.z, p1.z, p2.z)-hup;</font>
00279 <font class="comment"> bbFace.extend(bext);</font>
00280 <font class="comment"> if(!bbFace.include(pos))</font>
00281 <font class="comment"> continue;*/</font>
00282
00283 <font class="comment">// Test if the face enclose the pos in X/Y plane.</font>
00284 <font class="comment">// NB: compute and using a BBox to do a rapid test is not a very good idea, since it will </font>
00285 <font class="comment">// add an overhead which is NOT negligeable compared to the following test.</font>
00286 <font class="keywordtype">float</font> a,b,c; <font class="comment">// 2D cartesian coefficients of line in plane X/Y.</font>
00287 <font class="comment">// Line p0-p1.</font>
00288 a= -(p1.y-p0.y);
00289 b= (p1.x-p0.x);
00290 c= -(p0.x*a + p0.y*b);
00291 <font class="keywordflow">if</font>( (a*pos.x + b*pos.y + c) < 0) <font class="keywordflow">continue</font>;
00292 <font class="comment">// Line p1-p2.</font>
00293 a= -(p2.y-p1.y);
00294 b= (p2.x-p1.x);
00295 c= -(p1.x*a + p1.y*b);
00296 <font class="keywordflow">if</font>( (a*pos.x + b*pos.y + c) < 0) <font class="keywordflow">continue</font>;
00297 <font class="comment">// Line p2-p0.</font>
00298 a= -(p0.y-p2.y);
00299 b= (p0.x-p2.x);
00300 c= -(p2.x*a + p2.y*b);
00301 <font class="keywordflow">if</font>( (a*pos.x + b*pos.y + c) < 0) <font class="keywordflow">continue</font>;
00302
00303
00304 <font class="comment">// Compute the possible height.</font>
00305 CVector tmp;
00306 <font class="comment">// intersect the vertical line with the plane.</font>
00307 tmp= pPlane.intersect(pos, pos-CVector(0,0,100));
00308
00309 <font class="comment">/*</font>
00310 <font class="comment"> // CTriangle intersect() method.</font>
00311 <font class="comment"> CVector tmp;</font>
00312 <font class="comment"> if(pFace.intersect(b1, b2, tmp, pPlane))</font>
00313 <font class="comment"> */</font>
00314 {
00315 <font class="keywordtype">float</font> h= tmp.z;
00316 <font class="comment">// Test if it would fit in the wanted field.</font>
00317 <font class="keywordflow">if</font>(h>pos.z+hup) <font class="keywordflow">continue</font>;
00318 <font class="keywordflow">if</font>(h<pos.z-hbot) <font class="keywordflow">continue</font>;
00319
00320 <font class="comment">// OK!!</font>
00321 <font class="keywordflow">if</font>(!found)
00322 {
00323 found=<font class="keyword">true</font>;
00324 <a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>=h;
00325 }
00326 <font class="keywordflow">else</font>
00327 {
00328 <a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>= max(<a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>,h);
00329 }
00330 }
00331 }
00332
00333 <font class="keywordflow">if</font>(found)
00334 pos.z= <a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>;
00335
00336 <font class="keywordflow">return</font> found;
00337 }
00338
00339
00340
00341 <font class="comment">// ***************************************************************************</font>
<a name="l00342"></a><a class="code" href="classNL3D_1_1CMiniCol.html#a7">00342</a> <font class="keywordtype">bool</font> CMiniCol::getGroundNormal(<font class="keyword">const</font> CVector &pos, CVector &normal, <font class="keywordtype">float</font> hup, <font class="keywordtype">float</font> hbot)
00343 {
00344 CVector b1,b2;
00345 <font class="keywordtype">bool</font> found=<font class="keyword">false</font>;
00346 <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>=0.0;
00347
00348
00349 <font class="comment">// Select quad nodes which contains pos.</font>
00350 b1=b2=pos;
00351 b1.z-= hbot;
00352 b2.z+= hup;
00353 <font class="comment">// Select.</font>
00354 <a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.select(b1,b2);
00355
00356 <font class="comment">// For each face, test if it is under pos, then test if height is correct.</font>
00357 CQuadGrid<CFace>::CIterator iFace;
00358 <font class="keywordflow">for</font>(iFace= <a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.begin();iFace!=<a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.end();iFace++)
00359 {
00360 CTriangle &pFace= (*iFace).Face;
00361 CPlane &pPlane= (*iFace).Plane;
00362 <font class="comment">// Order is important.</font>
00363 CVector &p0= pFace.V0;
00364 CVector &p1= pFace.V1;
00365 CVector &p2= pFace.V2;
00366
00367 <font class="comment">// TOIMP: This is VERY SLOW!!! (hope that the quadtree will help, but it still very slow...).</font>
00368
00369 <font class="comment">// Yoyo Debug, test, if the point may be IN the bbox.</font>
00370 CAABBox bbFace;
00371 bbFace.setCenter(p0);
00372 bbFace.extend(p1);
00373 bbFace.extend(p2);
00374 CVector bext=p0;
00375 bext.z= maxof(p0.z, p1.z, p2.z)+hbot;
00376 bbFace.extend(bext);
00377 bext.z= minof(p0.z, p1.z, p2.z)-hup;
00378 bbFace.extend(bext);
00379 <font class="keywordflow">if</font>(!bbFace.include(pos))
00380 <font class="keywordflow">continue</font>;
00381
00382 <font class="comment">// Test if the face enclose the pos in X/Y plane.</font>
00383 <font class="comment">// NB: compute and using a BBox to do a rapid test is not a very good idea, since it will </font>
00384 <font class="comment">// add an overhead which is NOT negligeable compared to the following test.</font>
00385 <font class="keywordtype">float</font> a,b,c; <font class="comment">// 2D cartesian coefficients of line in plane X/Y.</font>
00386 <font class="comment">// Line p0-p1.</font>
00387 a= -(p1.y-p0.y);
00388 b= (p1.x-p0.x);
00389 c= -(p0.x*a + p0.y*b);
00390 <font class="keywordflow">if</font>( (a*pos.x + b*pos.y + c) < 0) <font class="keywordflow">continue</font>;
00391 <font class="comment">// Line p1-p2.</font>
00392 a= -(p2.y-p1.y);
00393 b= (p2.x-p1.x);
00394 c= -(p1.x*a + p1.y*b);
00395 <font class="keywordflow">if</font>( (a*pos.x + b*pos.y + c) < 0) <font class="keywordflow">continue</font>;
00396 <font class="comment">// Line p2-p0.</font>
00397 a= -(p0.y-p2.y);
00398 b= (p0.x-p2.x);
00399 c= -(p2.x*a + p2.y*b);
00400 <font class="keywordflow">if</font>( (a*pos.x + b*pos.y + c) < 0) <font class="keywordflow">continue</font>;
00401
00402
00403 <font class="comment">// Compute the possible height.</font>
00404 CVector tmp;
00405 <font class="comment">// intersect the vertical line with the plane.</font>
00406 tmp= pPlane.intersect(pos, pos-CVector(0,0,100));
00407 <font class="keywordtype">float</font> h= tmp.z;
00408 <font class="comment">// Test if it would fit in the wanted field.</font>
00409 <font class="keywordflow">if</font>(h>pos.z+hup) <font class="keywordflow">continue</font>;
00410 <font class="keywordflow">if</font>(h<pos.z-hbot) <font class="keywordflow">continue</font>;
00411
00412 <font class="comment">// OK!!</font>
00413 <font class="keywordflow">if</font>(!found)
00414 {
00415 found=<font class="keyword">true</font>;
00416 <a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>=h;
00417 normal= pPlane.getNormal();
00418 }
00419 <font class="keywordflow">else</font>
00420 {
00421 <font class="keywordflow">if</font>(h><a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>)
00422 {
00423 normal= pPlane.getNormal();
00424 <a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>= h;
00425 }
00426 }
00427 }
00428
00429 <font class="keywordflow">return</font> found;
00430 }
00431
00432
00433 <font class="comment">// ***************************************************************************</font>
<a name="l00434"></a><a class="code" href="classNL3D_1_1CMiniCol.html#a5">00434</a> <font class="keywordtype">bool</font> CMiniCol::testMove(<font class="keyword">const</font> CVector &prec, CVector &cur)
00435 {
00436 CVector dir= cur-prec;
00437 dir.normalize();
00438
00439 <font class="comment">// Angle max.</font>
00440 <font class="keywordtype">float</font> anglemax= 65; <font class="comment">// 65 degrees.</font>
00441 anglemax= (float)tan( anglemax*<a class="code" href="namespaceNLMISC.html#a7">Pi</a>/180);
00442
00443 <font class="comment">// Must not go to near of a wall.</font>
00444 CVector test= cur+dir*0.5;
00445 <font class="keywordtype">float</font> norm= (test-prec).norm();
00446 norm*=anglemax;
00447 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CMiniCol.html#a6">snapToGround</a>(test, norm, norm))
00448 {
00449 cur= prec;
00450 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00451 }
00452 <font class="keywordflow">else</font>
00453 {
00454 <font class="comment">// Must test and snap the current position.</font>
00455 norm= (cur-prec).norm();
00456 norm*=anglemax;
00457 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CMiniCol.html#a6">snapToGround</a>(cur, norm, norm))
00458 {
00459 cur= prec;
00460 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00461 }
00462 }
00463 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00464 }
00465
00466
00467 <font class="comment">// ***************************************************************************</font>
<a name="l00468"></a><a class="code" href="classNL3D_1_1CMiniCol.html#a8">00468</a> <font class="keywordtype">void</font> CMiniCol::getFaces(std::vector<CTriangle> &triresult, <font class="keyword">const</font> CAABBox &bbox)
00469 {
00470 triresult.clear();
00471
00472 <font class="comment">// Select.</font>
00473 <a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.select(bbox.getMin(),bbox.getMax());
00474
00475 <font class="comment">// For each face, test if it is under pos, then test if height is correct.</font>
00476 CQuadGrid<CFace>::CIterator iFace;
00477 <font class="keywordflow">for</font>(iFace= <a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.begin();iFace!=<a class="code" href="classNL3D_1_1CMiniCol.html#o3">_Grid</a>.end();iFace++)
00478 {
00479 CTriangle &face= (*iFace).Face;
00480
00481 <font class="keywordflow">if</font>(bbox.intersect(face.V0, face.V1, face.V2))
00482 {
00483 triresult.push_back(face);
00484 }
00485 }
00486
00487 }
00488
00489
00490 } <font class="comment">// NL3D</font>
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