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<hr><h1>mesh_multi_lod_instance.cpp</h1><a href="mesh__multi__lod__instance_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="mesh__multi__lod__instance_8h.html">3d/mesh_multi_lod_instance.h</a>"</font>
00029 <font class="preprocessor">#include "<a class="code" href="mesh__multi__lod_8h.html">3d/mesh_multi_lod.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="coarse__mesh__manager_8h.html">3d/coarse_mesh_manager.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="scene_8h.html">3d/scene.h</a>"</font>
00032
00033 <font class="preprocessor">#include "<a class="code" href="debug_8h.html">nel/misc/debug.h</a>"</font>
00034
00035 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00036
00037 <font class="keyword">namespace </font>NL3D
00038 {
00039
00040 <font class="comment">// ***************************************************************************</font>
00041
<a name="l00042"></a><a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#a0">00042</a> CMeshMultiLodInstance::CMeshMultiLodInstance ()
00043 {
00044 <font class="comment">// No flags</font>
00045 <a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#o2">Flags</a>=0;
00046 <a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#o7">_CoarseMeshDistance</a> = -1.f;
00047 }
00048
00049 <font class="comment">// ***************************************************************************</font>
00050
<a name="l00051"></a><a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#a1">00051</a> CMeshMultiLodInstance::~CMeshMultiLodInstance ()
00052 {
00053 <font class="comment">// delete instances from manager</font>
00054 <a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#a3">deleteCoarseInstances</a>();
00055 }
00056
00057
00058 <font class="comment">// ***************************************************************************</font>
00059
<a name="l00060"></a><a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#d0">00060</a> <font class="keywordtype">void</font> CMeshMultiLodInstance::registerBasic()
00061 {
00062 CMOT::registerModel (<a class="code" href="namespaceNL3D.html#a144">MeshMultiLodInstanceId</a>, <a class="code" href="namespaceNL3D.html#a140">MeshBaseInstanceId</a>, CMeshMultiLodInstance::creator);
00063 CMOT::registerObs (<a class="code" href="namespaceNL3D.html#a93">LoadBalancingTravId</a>, <a class="code" href="namespaceNL3D.html#a144">MeshMultiLodInstanceId</a>, CMeshMultiLodBalancingObs::creator);
00064 CMOT::registerObs (<a class="code" href="namespaceNL3D.html#a25">ClipTravId</a>, <a class="code" href="namespaceNL3D.html#a144">MeshMultiLodInstanceId</a>, CMeshMultiLodClipObs::creator);
00065 }
00066
00067
00068 <font class="comment">// ***************************************************************************</font>
<a name="l00069"></a><a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#a3">00069</a> <font class="keywordtype">void</font> CMeshMultiLodInstance::deleteCoarseInstances()
00070 {
00071 <font class="comment">// If at least one coarse instance is created</font>
00072 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#o2">Flags</a> & (<a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#s3s1">Coarse0Loaded</a>|<a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#s3s2">Coarse1Loaded</a>) )
00073 {
00074 <font class="comment">// Cast shape</font>
00075 <a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#l0">CMeshMultiLod</a> *shape=safe_cast<CMeshMultiLod*> ((IShape*)<a class="code" href="classNL3D_1_1CTransformShape.html#m0">Shape</a>);
00076
00077 <font class="comment">// Manager pointer</font>
00078 CCoarseMeshManager *manager;
00079
00080 <font class="comment">// Get the manager</font>
00081 <font class="keywordflow">if</font> (shape->isStatic ())
00082 manager=<a class="code" href="classNL3D_1_1CMeshBaseInstance.html#a1">getScene</a>()->getStaticCoarseMeshManager ();
00083 <font class="keywordflow">else</font>
00084 manager=<a class="code" href="classNL3D_1_1CMeshBaseInstance.html#a1">getScene</a>()->getDynamicCoarseMeshManager ();
00085
00086 <font class="comment">// Manager ok ?</font>
00087 <font class="keywordflow">if</font> (manager)
00088 {
00089 <font class="comment">// Coarse mesh loaded ?</font>
00090 <font class="keywordflow">if</font> (<a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#o2">Flags</a>&<a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#s3s1">Coarse0Loaded</a>)
00091 {
00092 manager->removeMesh (<a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#o3">CoarseMeshId</a>[0]);
00093 <a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#o2">Flags</a>&= ~<a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#s3s1">Coarse0Loaded</a>;
00094 }
00095 <font class="keywordflow">if</font> (<a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#o2">Flags</a>&<a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#s3s2">Coarse1Loaded</a>)
00096 {
00097 manager->removeMesh (<a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#o3">CoarseMeshId</a>[1]);
00098 <a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#o2">Flags</a>&= ~<a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#s3s2">Coarse1Loaded</a>;
00099 }
00100 }
00101 }
00102 }
00103
00104
00105 <font class="comment">// ***************************************************************************</font>
<a name="l00106"></a><a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#c0">00106</a> CRGBA CMeshMultiLodInstance::getCoarseMeshLighting()
00107 {
00108 CScene *scene= <a class="code" href="classNL3D_1_1CMeshBaseInstance.html#a1">getScene</a>();
00109 <a class="code" href="debug_8h.html#a6">nlassert</a>(scene);
00110
00111 <font class="comment">// compute his sun contribution result, and update</font>
00112 CRGBA sunContrib= scene->getSunDiffuse();
00113 <font class="comment">// simulate/average diffuse lighting over the mesh by dividing diffuse by 2.</font>
00114 sunContrib.modulateFromuiRGBOnly(sunContrib, <a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#a4">getLightContribution</a>().SunContribution/2 );
00115 <font class="comment">// Add Ambient</font>
00116 sunContrib.addRGBOnly(sunContrib, scene->getSunAmbient());
00117 sunContrib.A= 255;
00118
00119 <font class="keywordflow">return</font> sunContrib;
00120 }
00121
00122
00123 <font class="comment">// ***************************************************************************</font>
<a name="l00124"></a><a class="code" href="classNL3D_1_1CMeshMultiLodClipObs.html#a0">00124</a> <font class="keywordtype">bool</font> CMeshMultiLodClipObs::clip(IBaseClipObs *caller)
00125 {
00126 <font class="comment">// Call Base method. If clipped</font>
00127 <font class="keywordflow">if</font>( !CTransformShapeClipObs::clip(caller) )
00128 {
00129 <font class="comment">// If the clip is due to a DistMax reason, must delete Coarses instances.</font>
00130 <font class="keywordflow">if</font>(CTransformShapeClipObs::isLastClipDueToDistMax())
00131 {
00132 CMeshMultiLodInstance *inst= (CMeshMultiLodInstance*)<a class="code" href="classNL3D_1_1IObs.html#m0">Model</a>;
00133 inst->deleteCoarseInstances();
00134 }
00135
00136 <font class="comment">// return result of clip</font>
00137 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00138 }
00139 <font class="keywordflow">else</font>
00140 <font class="comment">// return result of clip</font>
00141 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00142 }
00143
00144
00145 <font class="comment">// ***************************************************************************</font>
<a name="l00146"></a><a class="code" href="classNL3D_1_1CMeshMultiLodClipObs.html#a1">00146</a> <font class="keywordtype">void</font> CMeshMultiLodClipObs::forceClip(TClipReason clipReason)
00147 {
00148 <font class="comment">// If the clip is due to a DistMax reason, must delete Coarses instances.</font>
00149 <font class="keywordflow">if</font>(clipReason == IBaseClipObs::DistMaxClip)
00150 {
00151 CMeshMultiLodInstance *inst= (CMeshMultiLodInstance*)<a class="code" href="classNL3D_1_1IObs.html#m0">Model</a>;
00152 inst->deleteCoarseInstances();
00153 }
00154
00155 <font class="comment">// Call Base method (traverse Sons)</font>
00156 CTransformShapeClipObs::forceClip(clipReason);
00157 }
00158
00159
00160 <font class="comment">// ***************************************************************************</font>
00161
<a name="l00162"></a><a class="code" href="classNL3D_1_1CMeshMultiLodBalancingObs.html#a0">00162</a> <font class="keywordtype">void</font> CMeshMultiLodBalancingObs::traverse(IObs *caller)
00163 {
00164 <font class="comment">// Call previous</font>
00165 CTransformShapeLoadBalancingObs::traverse (caller);
00166
00167 <font class="comment">// If this is the second pass of LoadBalancing, choose the Lods, according to getNumTrianglesAfterLoadBalancing()</font>
00168 CLoadBalancingTrav *loadTrav= (CLoadBalancingTrav*)<a class="code" href="classNL3D_1_1IObs.html#m1">Trav</a>;
00169 <font class="keywordflow">if</font>(loadTrav->getLoadPass()==1)
00170 {
00171 <font class="comment">// Get a pointer on the model</font>
00172 CMeshMultiLodInstance *model=safe_cast<CMeshMultiLodInstance*> (Model);
00173
00174 <font class="comment">// Get a pointer on the shape</font>
00175 CMeshMultiLod *shape=safe_cast<CMeshMultiLod*> ((IShape*)model->Shape);
00176
00177 <font class="comment">// Reset render pass</font>
00178 model->setTransparency(<font class="keyword">false</font>);
00179 model->setOpacity(<font class="keyword">false</font>);
00180
00181 <font class="comment">// Get the wanted number of polygons</font>
00182 <font class="keywordtype">float</font> polygonCount=model->getNumTrianglesAfterLoadBalancing ();
00183
00184 <font class="comment">// Look for the good slot</font>
00185 uint meshCount=shape->_MeshVector.size();
00186 model->Lod0=0;
00187 <font class="keywordflow">if</font> (meshCount>1)
00188 {
00189 <font class="comment">// Look for good i</font>
00190 <font class="keywordflow">while</font> ( polygonCount < shape->_MeshVector[model->Lod0].EndPolygonCount )
00191 {
00192 model->Lod0++;
00193 <font class="keywordflow">if</font> (model->Lod0==meshCount-1)
00194 <font class="keywordflow">break</font>;
00195 }
00196 }
00197
00198 <font class="comment">// The slot</font>
00199 CMeshMultiLod::CMeshSlot &slot=shape->_MeshVector[model->Lod0];
00200
00201 <font class="comment">// Get the distance with polygon count</font>
00202 <font class="keywordtype">float</font> distance=(polygonCount-slot.B)/slot.A;
00203
00204 <font class="comment">// Get the final polygon count</font>
00205 <font class="keywordflow">if</font> (slot.MeshGeom)
00206 model->PolygonCountLod0=slot.MeshGeom->getNumTriangles (distance);
00207
00208 <font class="comment">// Second slot in use ?</font>
00209 model->Lod1=0xffffffff;
00210
00211 <font class="comment">// The next slot</font>
00212 CMeshMultiLod::CMeshSlot *nextSlot=NULL;
00213
00214 <font class="comment">// Next slot exist ?</font>
00215 <font class="keywordflow">if</font> (model->Lod0!=meshCount-1)
00216 {
00217 nextSlot=&(shape->_MeshVector[model->Lod0+1]);
00218 }
00219
00220 <font class="comment">// Max dist before blend</font>
00221 <font class="keywordtype">float</font> startBlend;
00222 <font class="keywordflow">if</font> (nextSlot)
00223 startBlend=slot.DistMax-nextSlot->BlendLength;
00224 <font class="keywordflow">else</font>
00225 startBlend=slot.DistMax-slot.BlendLength;
00226
00227 <font class="comment">// In blend zone ?</font>
00228 <font class="keywordflow">if</font> ( startBlend < distance )
00229 {
00230 <font class="comment">// Alpha factor for main Lod</font>
00231 model->BlendFactor = (slot.DistMax-distance)/(slot.DistMax-startBlend);
00232 <font class="keywordflow">if</font> (model->BlendFactor<0)
00233 model->BlendFactor=0;
00234 <a class="code" href="debug_8h.html#a6">nlassert</a> (model->BlendFactor<=1);
00235
00236 <font class="comment">// Render this mesh</font>
00237 <font class="keywordflow">if</font> (slot.MeshGeom)
00238 {
00239 <font class="keywordflow">if</font> (slot.Flags&CMeshMultiLod::CMeshSlot::BlendOut)
00240 {
00241 <font class="comment">// Render the geom mesh with alpha blending with goodPolyCount</font>
00242 model->setTransparency(<font class="keyword">true</font>);
00243 model->Flags|=CMeshMultiLodInstance::Lod0Blend;
00244 }
00245 <font class="keywordflow">else</font>
00246 {
00247 <font class="comment">// Render the geom mesh without alpha blending with goodPolyCount</font>
00248 model->setTransparency (slot.isTransparent());
00249 model->setOpacity (slot.isOpaque());
00250 model->Flags&=~CMeshMultiLodInstance::Lod0Blend;
00251 }
00252 }
00253 <font class="keywordflow">else</font>
00254 model->Lod0=0xffffffff;
00255
00256 <font class="comment">// Next mesh, BlendIn actived ?</font>
00257 <font class="keywordflow">if</font> (nextSlot && shape->_MeshVector[model->Lod0+1].MeshGeom && (nextSlot->Flags&CMeshMultiLod::CMeshSlot::BlendIn))
00258 {
00259 <font class="comment">// Render the geom mesh with alpha blending with nextSlot->BeginPolygonCount</font>
00260 model->PolygonCountLod1=nextSlot->MeshGeom->getNumTriangles (distance);
00261 model->Lod1=model->Lod0+1;
00262 model->setTransparency(<font class="keyword">true</font>);
00263 }
00264 }
00265 <font class="keywordflow">else</font>
00266 {
00267 <font class="keywordflow">if</font> (slot.MeshGeom)
00268 {
00269 <font class="comment">// Render without blend with goodPolyCount</font>
00270 model->setTransparency (slot.isTransparent());
00271 model->setOpacity (slot.isOpaque());
00272 model->Flags&=~CMeshMultiLodInstance::Lod0Blend;
00273 }
00274 <font class="keywordflow">else</font>
00275 model->Lod0=0xffffffff;
00276 }
00277 }
00278 }
00279
00280 <font class="comment">// ***************************************************************************</font>
<a name="l00281"></a><a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#a2">00281</a> <font class="keywordtype">void</font> CMeshMultiLodInstance::changeMRMDistanceSetup(<font class="keywordtype">float</font> distanceFinest, <font class="keywordtype">float</font> distanceMiddle, <font class="keywordtype">float</font> distanceCoarsest)
00282 {
00283 <font class="keywordflow">if</font>(Shape)
00284 {
00285 <font class="comment">// Get a pointer on the shape.</font>
00286 <a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#l0">CMeshMultiLod</a> *pMesh =safe_cast<CMeshMultiLod*> ((IShape*)<a class="code" href="classNL3D_1_1CTransformShape.html#m0">Shape</a>);
00287 <font class="comment">// Affect the mesh directly.</font>
00288 pMesh->changeMRMDistanceSetup(distanceFinest, distanceMiddle, distanceCoarsest);
00289 }
00290 }
00291
00292
00293 <font class="comment">// ***************************************************************************</font>
<a name="l00294"></a><a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#a7">00294</a> <font class="keywordtype">float</font> CMeshMultiLodInstance::getNumTriangles (<font class="keywordtype">float</font> distance)
00295 {
00296 <a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#l0">CMeshMultiLod</a> *shape = safe_cast<CMeshMultiLod*> ((IShape*)<a class="code" href="classNL3D_1_1CTransformShape.html#m0">Shape</a>);
00297 <font class="keywordflow">return</font> shape->getNumTrianglesWithCoarsestDist(distance, <a class="code" href="classNL3D_1_1CMeshMultiLodInstance.html#o7">_CoarseMeshDistance</a>);
00298 }
00299
00300 } <font class="comment">// NL3D</font>
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