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<hr><h1>mesh_multi_lod.cpp</h1><a href="mesh__multi__lod_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_8h.html">3d/mesh_multi_lod.h</a>"</font>
00029 <font class="preprocessor">#include "<a class="code" href="mesh__multi__lod__instance_8h.html">3d/mesh_multi_lod_instance.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="mesh__instance_8h.html">3d/mesh_instance.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="mesh__mrm_8h.html">3d/mesh_mrm.h</a>"</font>
00032 <font class="preprocessor">#include "<a class="code" href="scene_8h.html">3d/scene.h</a>"</font>
00033 <font class="preprocessor">#include "<a class="code" href="coarse__mesh__manager_8h.html">3d/coarse_mesh_manager.h</a>"</font>
00034 <font class="preprocessor">#include "<a class="code" href="skeleton__model_8h.html">3d/skeleton_model.h</a>"</font>
00035 <font class="preprocessor">#include "<a class="code" href="fast__floor_8h.html">3d/fast_floor.h</a>"</font>
00036 <font class="preprocessor">#include "<a class="code" href="mesh__blender_8h.html">3d/mesh_blender.h</a>"</font>
00037
00038 <font class="preprocessor">#include "<a class="code" href="debug_8h.html">nel/misc/debug.h</a>"</font>
00039
00040 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00041
00042 <font class="keyword">namespace </font>NL3D
00043 {
00044
00045
00046
00047
00048 <font class="comment">// ***************************************************************************</font>
00049
<a name="l00050"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#z581_0">00050</a> <font class="keywordtype">void</font> CMeshMultiLod::build(CMeshMultiLodBuild &mbuild)
00051 {
00052 <font class="comment">// Clear the mesh</font>
00053 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#c0">clear</a> ();
00054
00055 <font class="comment">// Build the base mesh</font>
00056 CMeshBase::buildMeshBase (mbuild.BaseMesh);
00057
00058 <font class="comment">// Static flag</font>
00059 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o0">_StaticLod</a>=mbuild.StaticLod;
00060
00061 <font class="comment">// Resize the array</font>
00062 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>.resize (mbuild.LodMeshes.size());
00063
00064 <font class="comment">// Number of coarse meshes</font>
00065 <a class="code" href="types__nl_8h.html#a14">uint</a> coarse=0;
00066
00067 <font class="comment">// For each slots</font>
00068 <font class="keywordflow">for</font> (<a class="code" href="types__nl_8h.html#a14">uint</a> slot=0; slot<mbuild.LodMeshes.size(); slot++)
00069 {
00070 <font class="comment">// Dist max</font>
00071 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].DistMax=mbuild.LodMeshes[slot].DistMax;
00072
00073 <font class="comment">// BlendLength</font>
00074 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].BlendLength=mbuild.LodMeshes[slot].BlendLength;
00075
00076 <font class="comment">// Flags</font>
00077 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].Flags=0;
00078
00079 <font class="comment">// Blend in ?</font>
00080 <font class="keywordflow">if</font> (mbuild.LodMeshes[slot].Flags & CMeshMultiLodBuild::CBuildSlot::BlendIn)
00081 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].Flags|=CMeshSlot::BlendIn;
00082
00083 <font class="comment">// Blend out ?</font>
00084 <font class="keywordflow">if</font> (mbuild.LodMeshes[slot].Flags & CMeshMultiLodBuild::CBuildSlot::BlendOut)
00085 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].Flags|=CMeshSlot::BlendOut;
00086
00087 <font class="comment">// Coarse mesh ?</font>
00088 <font class="keywordflow">if</font> (mbuild.LodMeshes[slot].Flags & CMeshMultiLodBuild::CBuildSlot::CoarseMesh)
00089 {
00090 <font class="comment">// Warning: no more than 2 coarse meshes in a lod mesh!</font>
00091 <a class="code" href="debug_8h.html#a6">nlassert</a> (coarse<=1);
00092
00093 <font class="comment">// Flag</font>
00094 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].Flags|=CMeshSlot::CoarseMesh;
00095
00096 <font class="comment">// Flag coarse ID</font>
00097 <font class="keywordflow">if</font> (coarse==1)
00098 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].Flags|=CMeshSlot::CoarseMeshId;
00099
00100 <font class="comment">// One more</font>
00101 coarse++;
00102 }
00103
00104 <font class="comment">// Is opaque</font>
00105 <font class="keywordflow">if</font> (mbuild.LodMeshes[slot].Flags & CMeshMultiLodBuild::CBuildSlot::IsOpaque)
00106 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].Flags|=CMeshSlot::IsOpaque;
00107
00108 <font class="comment">// Is transparent</font>
00109 <font class="keywordflow">if</font> (mbuild.LodMeshes[slot].Flags & CMeshMultiLodBuild::CBuildSlot::IsTransparent)
00110 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].Flags|=CMeshSlot::IsTransparent;
00111
00112 <font class="comment">// MeshGeom</font>
00113 <a class="code" href="debug_8h.html#a6">nlassert</a> (mbuild.LodMeshes[slot].MeshGeom);
00114
00115 <font class="comment">// Valid pointer ?</font>
00116 <font class="keywordflow">if</font> (<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].Flags&CMeshSlot::CoarseMesh)
00117 {
00118 <font class="comment">// If it is a coarse mesh, it must be a CMeshGeom.</font>
00119 <font class="keywordflow">if</font> (dynamic_cast<CMeshGeom*>(mbuild.LodMeshes[slot].MeshGeom)==NULL)
00120 {
00121 <font class="comment">// If it is a coarse mesh, it must be a CMeshGeom.</font>
00122 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].MeshGeom = NULL;
00123 <font class="keyword">delete</font> mbuild.LodMeshes[slot].MeshGeom;
00124 }
00125 <font class="keywordflow">else</font>
00126 <font class="comment">// Ok, no prb</font>
00127 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].MeshGeom = mbuild.LodMeshes[slot].MeshGeom;
00128 }
00129 <font class="keywordflow">else</font>
00130 <font class="comment">// Ok, no prb</font>
00131 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].MeshGeom = mbuild.LodMeshes[slot].MeshGeom;
00132 }
00133
00134 <font class="comment">// Sort the slot by the distance...</font>
00135 <font class="keywordflow">for</font> (<font class="keywordtype">int</font> i=mbuild.LodMeshes.size()-1; i>0; i--)
00136 <font class="keywordflow">for</font> (<font class="keywordtype">int</font> j=0; j<i; j++)
00137 {
00138 <font class="comment">// Bad sort ?</font>
00139 <font class="keywordflow">if</font> (<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[j].DistMax><a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[j+1].DistMax)
00140 {
00141 <font class="comment">// Exchange slots</font>
00142 CMeshSlot tmp=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[j];
00143 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[j]=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[j+1];
00144 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[j+1]=tmp;
00145 tmp.MeshGeom=NULL;
00146 }
00147 }
00148
00149 <font class="comment">// Calc start and end polygon count</font>
00150 <font class="keywordflow">for</font> (<a class="code" href="types__nl_8h.html#a14">uint</a> k=0; k<mbuild.LodMeshes.size(); k++)
00151 {
00152 <font class="comment">// Get start distance</font>
00153 <font class="keywordtype">float</font> startDist;
00154 <font class="keywordflow">if</font> (k==0)
00155 startDist=0;
00156 <font class="keywordflow">else</font>
00157 startDist=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k-1].DistMax;
00158
00159 <font class="comment">// Get start poly count</font>
00160 <font class="keywordtype">float</font> startPolyCount;
00161 startPolyCount=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k].MeshGeom->getNumTriangles (startDist);
00162
00163 <font class="comment">// Get end distance</font>
00164 <font class="keywordtype">float</font> endDist=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k].DistMax;
00165
00166 <font class="comment">// Get end poly count</font>
00167 <font class="keywordflow">if</font> (k==mbuild.LodMeshes.size()-1)
00168 {
00169 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k].EndPolygonCount=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k].MeshGeom->getNumTriangles (endDist);
00170 <font class="keywordflow">if</font> (startPolyCount==<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k].EndPolygonCount)
00171 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k].EndPolygonCount=startPolyCount/2;
00172 }
00173 <font class="keywordflow">else</font>
00174 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k].EndPolygonCount=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k+1].MeshGeom->getNumTriangles (endDist);
00175
00176 <font class="comment">// Calc A</font>
00177 <font class="keywordflow">if</font> (endDist==startDist)
00178 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k].A=0;
00179 <font class="keywordflow">else</font>
00180 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k].A=(<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k].EndPolygonCount-startPolyCount)/(endDist-startDist);
00181
00182 <font class="comment">// Calc A</font>
00183 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k].B=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k].EndPolygonCount-<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[k].A*endDist;
00184 }
00185
00186 <font class="comment">// End: compile the max distance of display</font>
00187 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#c3">compileDistMax</a>();
00188 }
00189
00190 <font class="comment">// ***************************************************************************</font>
00191
<a name="l00192"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#z582_0">00192</a> CTransformShape *CMeshMultiLod::createInstance(CScene &scene)
00193 {
00194 <font class="comment">// Create a CMeshInstance, an instance of a multi lod mesh.</font>
00195 CMeshMultiLodInstance *mi=(CMeshMultiLodInstance*)scene.createModel(NL3D::MeshMultiLodInstanceId);
00196 mi->Shape= <font class="keyword">this</font>;
00197 mi->_LastLodMatrixDate[0]=0;
00198 mi->_LastLodMatrixDate[1]=0;
00199
00200 <font class="comment">// instanciate the material part of the Mesh, ie the CMeshBase.</font>
00201 CMeshBase::instanciateMeshBase(mi, &scene);
00202
00203
00204 <font class="comment">// For all lods, do some instance init for MeshGeom</font>
00205 <font class="keywordflow">for</font>(<a class="code" href="types__nl_8h.html#a14">uint</a> i=0; i<<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>.size(); i++)
00206 {
00207 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[i].MeshGeom)
00208 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[i].MeshGeom->initInstance(mi);
00209 }
00210
00211
00212 <font class="keywordflow">return</font> mi;
00213 }
00214
00215 <font class="comment">// ***************************************************************************</font>
00216
<a name="l00217"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#z582_1">00217</a> <font class="keywordtype">bool</font> CMeshMultiLod::clip(<font class="keyword">const</font> std::vector<CPlane> &pyramid, <font class="keyword">const</font> CMatrix &worldMatrix)
00218 {
00219 <font class="comment">// Look for the biggest mesh</font>
00220 <a class="code" href="types__nl_8h.html#a14">uint</a> meshCount=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>.size();
00221 <font class="keywordflow">for</font> (<a class="code" href="types__nl_8h.html#a14">uint</a> i=0; i<meshCount; i++)
00222 {
00223 <font class="comment">// Ref on slot</font>
00224 CMeshSlot &slot=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[i];
00225
00226 <font class="comment">// Is mesh present ?</font>
00227 <font class="keywordflow">if</font> (slot.MeshGeom)
00228 {
00229 <font class="comment">// Clip this mesh</font>
00230 <font class="keywordflow">return</font> slot.MeshGeom->clip (pyramid, worldMatrix);
00231 }
00232 }
00233 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00234 }
00235
00236 <font class="comment">// ***************************************************************************</font>
00237
<a name="l00238"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#z582_2">00238</a> <font class="keywordtype">void</font> CMeshMultiLod::render(IDriver *drv, CTransformShape *trans, <font class="keywordtype">bool</font> passOpaque)
00239 {
00240 <font class="comment">// Render good meshes</font>
00241 CMeshMultiLodInstance *instance=safe_cast<CMeshMultiLodInstance*>(trans);
00242
00243 <font class="comment">// Static or dynamic coarse mesh ?</font>
00244 CCoarseMeshManager *manager;
00245 <font class="keywordflow">if</font> (_StaticLod)
00246 {
00247 <font class="comment">// Get the static coarse mesh manager</font>
00248 manager=instance->getScene()->getStaticCoarseMeshManager();
00249 }
00250 <font class="keywordflow">else</font>
00251 {
00252 <font class="comment">// Get the dynamic coarse mesh manager</font>
00253 manager=instance->getScene()->getDynamicCoarseMeshManager();
00254 }
00255
00256 <font class="comment">// *** Render Lods</font>
00257
00258 <font class="comment">// Second lod ?</font>
00259 <font class="keywordflow">if</font> ( (instance->Lod1!=0xffffffff) && (passOpaque==<font class="keyword">false</font>) )
00260 {
00261 <font class="comment">// build rdrFlags to rdr both transparent and opaque materials, </font>
00262 <font class="comment">// use globalAlphaBlend, and disable ZWrite for Lod1</font>
00263 <a class="code" href="types__nl_8h.html#a10">uint32</a> rdrFlags= IMeshGeom::RenderOpaqueMaterial | IMeshGeom::RenderTransparentMaterial |
00264 IMeshGeom::RenderGlobalAlpha | IMeshGeom::RenderGADisableZWrite;
00265 <font class="comment">// NB: very important to render Lod1 first, because Lod0 is still rendered with ZWrite enabled.</font>
00266 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#c1">renderMeshGeom</a> (instance->Lod1, drv, instance, instance->PolygonCountLod1, rdrFlags, 1.f-instance->BlendFactor, manager);
00267 }
00268
00269
00270 <font class="comment">// Have an opaque pass ?</font>
00271 <font class="keywordflow">if</font> ( (instance->Flags&CMeshMultiLodInstance::Lod0Blend) == 0)
00272 {
00273 <font class="comment">// Is this slot a CoarseMesh?</font>
00274 <font class="keywordflow">if</font> ( <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[instance->Lod0].Flags&CMeshSlot::CoarseMesh )
00275 {
00276 <font class="comment">// render as a CoarseMesh the lod 0, only in opaque pass</font>
00277 <font class="keywordflow">if</font>(passOpaque)
00278 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#c2">renderCoarseMesh</a> (instance->Lod0, drv, instance, manager);
00279 }
00280 <font class="keywordflow">else</font>
00281 {
00282 <font class="comment">// build rdrFlags the normal way (as CMesh::render() for example)</font>
00283 <a class="code" href="types__nl_8h.html#a10">uint32</a> mask= (0-(uint32)passOpaque);
00284 <a class="code" href="types__nl_8h.html#a10">uint32</a> rdrFlags;
00285 <font class="comment">// select rdrFlags, without ifs.</font>
00286 rdrFlags= mask & (IMeshGeom::RenderOpaqueMaterial | IMeshGeom::RenderPassOpaque);
00287 rdrFlags|= ~mask & (IMeshGeom::RenderTransparentMaterial);
00288 <font class="comment">// Only render the normal way the first lod</font>
00289 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#c1">renderMeshGeom</a> (instance->Lod0, drv, instance, instance->PolygonCountLod0, rdrFlags, 1, manager);
00290 }
00291 }
00292 <font class="keywordflow">else</font>
00293 {
00294 <font class="comment">// Should not be in opaque</font>
00295 <a class="code" href="debug_8h.html#a6">nlassert</a> (passOpaque==<font class="keyword">false</font>);
00296
00297 <font class="comment">// build rdrFlags to rdr both transparent and opaque materials, </font>
00298 <font class="comment">// use globalAlphaBlend, BUT Don't disable ZWrite for Lod0</font>
00299 <a class="code" href="types__nl_8h.html#a10">uint32</a> rdrFlags= IMeshGeom::RenderOpaqueMaterial | IMeshGeom::RenderTransparentMaterial |
00300 IMeshGeom::RenderGlobalAlpha;
00301
00302 <font class="comment">// Render first lod in blend mode. Don't disable ZWrite for Lod0</font>
00303 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#c1">renderMeshGeom</a> (instance->Lod0, drv, instance, instance->PolygonCountLod0, rdrFlags, instance->BlendFactor, manager);
00304 }
00305
00306 <font class="comment">// *** Remove unused coarse meshes.</font>
00307 <font class="comment">// Manager must exist beacuse a mesh has been loaded...</font>
00308 <font class="keywordflow">if</font> (manager)
00309 {
00310 <a class="code" href="types__nl_8h.html#a14">uint</a> meshCount=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>.size();
00311 <font class="keywordflow">for</font> (<a class="code" href="types__nl_8h.html#a14">uint</a> j=0; j<meshCount; j++)
00312 {
00313 <font class="comment">// Is this slot a CoarseMesh?</font>
00314 <font class="keywordflow">if</font> ( <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[j].Flags&CMeshSlot::CoarseMesh )
00315 {
00316 <font class="comment">// Are we in Alpha Blend Transition?</font>
00317 <font class="keywordtype">bool</font> alphaTrans= instance->Flags&CMeshMultiLodInstance::Lod0Blend;
00318 <font class="comment">// we must remove coarse if the slot is not used, or if we are in Alpha Transition.</font>
00319 <font class="comment">// NB: only Lod0 can use CoarseMesh (see code before)</font>
00320 <font class="keywordflow">if</font> ( alphaTrans || (j!=instance->Lod0) )
00321 {
00322 <font class="comment">// Get coarse id</font>
00323 <a class="code" href="types__nl_8h.html#a14">uint</a> coarseId=(<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[j].Flags&CMeshSlot::CoarseMeshId)?1:0;
00324 <a class="code" href="types__nl_8h.html#a14">uint</a> flag=CMeshMultiLodInstance::Coarse0Loaded<<coarseId;
00325
00326 <font class="comment">// Coarse mesh loaded ?</font>
00327 <font class="keywordflow">if</font> ( instance->Flags&flag )
00328 {
00329 <font class="comment">// Yes, remove it..</font>
00330
00331 <font class="comment">// Remove the lod</font>
00332 manager->removeMesh (instance->CoarseMeshId[coarseId]);
00333
00334 <font class="comment">// Clear the flag</font>
00335 instance->Flags&=~flag;
00336 }
00337 }
00338 }
00339 }
00340 }
00341 }
00342
00343 <font class="comment">// ***************************************************************************</font>
00344
<a name="l00345"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#z582_5">00345</a> <font class="keywordtype">void</font> CMeshMultiLod::serial(<a class="code" href="classNLMISC_1_1IStream.html">NLMISC::IStream</a> &f) <font class="keywordflow">throw</font>(NLMISC::EStream)
00346 {
00347 <font class="comment">// Serial a version number</font>
00348 (void)f.serialVersion (0);
00349
00350 <font class="comment">// serial Materials infos contained in CMeshBase.</font>
00351 CMeshBase::serialMeshBase(f);
00352
00353 <font class="comment">// Static lod flag</font>
00354 f.serial (_StaticLod);
00355
00356 <font class="comment">// Serial the values</font>
00357 f.serialCont (_MeshVector);
00358
00359
00360 <font class="comment">// if reading, compile the new max distance of display</font>
00361 <font class="keywordflow">if</font> (f.isReading())
00362 {
00363 compileDistMax();
00364 }
00365 }
00366
00367 <font class="comment">// ***************************************************************************</font>
00368
<a name="l00369"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#z582_3">00369</a> <font class="keywordtype">float</font> CMeshMultiLod::getNumTriangles (<font class="keywordtype">float</font> distance)
00370 {
00371 <font class="comment">// Look in the table for good distances..</font>
00372 <a class="code" href="types__nl_8h.html#a14">uint</a> meshCount=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>.size();
00373
00374 <font class="comment">// At least on mesh</font>
00375 <font class="keywordflow">if</font> (meshCount>0)
00376 {
00377 <a class="code" href="types__nl_8h.html#a14">uint</a> i=0;
00378
00379 <font class="comment">// Look for good i</font>
00380 <font class="keywordflow">while</font> ( <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[i].DistMax<distance )
00381 {
00382 <font class="keywordflow">if</font> (i==meshCount-1)
00383 <font class="comment">// Abort if last one</font>
00384 <font class="keywordflow">break</font>;
00385 i++;
00386 }
00387
00388 <font class="comment">// Ref on slot</font>
00389 CMeshSlot &slot=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[i];
00390
00391 <font class="comment">// Is mesh present ?</font>
00392 <font class="keywordflow">if</font> (slot.MeshGeom)
00393 {
00394 <font class="comment">// Get the polygon count with the distance</font>
00395 <font class="keywordtype">float</font> polyCount=slot.A * distance + slot.B;
00396
00397 <font class="comment">/*// Get the perfect polygon count in this slot for the asked distance</font>
00398 <font class="comment"> float goodPolyCount=slot.MeshGeom->getNumTriangles (distance);</font>
00399 <font class="comment"></font>
00400 <font class="comment"> // Get the next slot perfect polygon count</font>
00401 <font class="comment"> float realEndPolyCount;</font>
00402 <font class="comment"></font>
00403 <font class="comment"> // Last slot ?</font>
00404 <font class="comment"> if ( (i<meshCount-1) && _MeshVector[i+1].MeshGeom )</font>
00405 <font class="comment"> // Take end number polygon count in the next slot</font>
00406 <font class="comment"> realEndPolyCount=_MeshVector[i+1].MeshGeom->getNumTriangles (slot.DistMax);</font>
00407 <font class="comment"> else</font>
00408 <font class="comment"> // Take end number polygon count in the this slot</font>
00409 <font class="comment"> realEndPolyCount=slot.EndPolygonCount;</font>
00410 <font class="comment"></font>
00411 <font class="comment"> // Return blended polygon count to have a continous decreasing function</font>
00412 <font class="comment"> return (goodPolyCount-slot.BeginPolygonCount) * (realEndPolyCount-slot.BeginPolygonCount) / </font>
00413 <font class="comment"> (slot.EndPolygonCount-slot.BeginPolygonCount) + slot.BeginPolygonCount;*/</font>
00414 <font class="keywordflow">return</font> polyCount;
00415 }
00416 }
00417
00418 <font class="keywordflow">return</font> 0;
00419 }
00420
00421 <font class="comment">// ***************************************************************************</font>
00422
<a name="l00423"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#z582_4">00423</a> <font class="keywordtype">void</font> CMeshMultiLod::getAABBox(<a class="code" href="classNLMISC_1_1CAABBox.html">NLMISC::CAABBox</a> &bbox)<font class="keyword"> const</font>
00424 <font class="keyword"></font>{
00425 <font class="comment">// Get count</font>
00426 <a class="code" href="types__nl_8h.html#a14">uint</a> count=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>.size();
00427 <font class="keywordflow">for</font> (<a class="code" href="types__nl_8h.html#a14">uint</a> slot=0; slot<count; slot++)
00428 {
00429 <font class="comment">// Shape ?</font>
00430 <font class="keywordflow">if</font> (<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].MeshGeom)
00431 {
00432 <font class="comment">// Get the bounding box</font>
00433 bbox=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].MeshGeom->getBoundingBox().getAABBox();
00434
00435 <font class="comment">// ok</font>
00436 <font class="keywordflow">break</font>;
00437 }
00438 }
00439 }
00440
00441 <font class="comment">// ***************************************************************************</font>
00442
<a name="l00443"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#c0">00443</a> <font class="keywordtype">void</font> CMeshMultiLod::clear ()
00444 {
00445 <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>.clear ();
00446 }
00447
00448 <font class="comment">// ***************************************************************************</font>
00449
<a name="l00450"></a><a class="code" href="classNL3D_1_1CMeshMultiLod_1_1CMeshSlot.html#a2">00450</a> <font class="keywordtype">void</font> CMeshMultiLod::CMeshSlot::serial(<a class="code" href="classNLMISC_1_1IStream.html">NLMISC::IStream</a> &f) <font class="keywordflow">throw</font>(NLMISC::EStream)
00451 {
00452 <font class="comment">// Check version</font>
00453 (void)f.serialVersion (0);
00454
00455 f.serialPolyPtr (MeshGeom);
00456 f.serial (A);
00457 f.serial (B);
00458 f.serial (DistMax);
00459 f.serial (EndPolygonCount);
00460 f.serial (BlendLength);
00461 f.serial (Flags);
00462
00463 <font class="keywordflow">if</font> (f.isReading())
00464 {
00465 }
00466 }
00467
00468 <font class="comment">// ***************************************************************************</font>
00469
<a name="l00470"></a><a class="code" href="classNL3D_1_1CMeshMultiLod_1_1CMeshSlot.html#a0">00470</a> CMeshMultiLod::CMeshSlot::CMeshSlot ()
00471 {
00472 <a class="code" href="classNL3D_1_1CMeshMultiLod_1_1CMeshSlot.html#m0">MeshGeom</a>=NULL;
00473 }
00474
00475 <font class="comment">// ***************************************************************************</font>
00476
<a name="l00477"></a><a class="code" href="classNL3D_1_1CMeshMultiLod_1_1CMeshSlot.html#a1">00477</a> CMeshMultiLod::CMeshSlot::~CMeshSlot ()
00478 {
00479 <font class="keywordflow">if</font> (MeshGeom)
00480 <font class="keyword">delete</font> <a class="code" href="classNL3D_1_1CMeshMultiLod_1_1CMeshSlot.html#m0">MeshGeom</a>;
00481 }
00482
00483 <font class="comment">// ***************************************************************************</font>
00484
<a name="l00485"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#c1">00485</a> <font class="keywordtype">void</font> CMeshMultiLod::renderMeshGeom (<a class="code" href="types__nl_8h.html#a14">uint</a> slot, IDriver *drv, CMeshMultiLodInstance *trans, <font class="keywordtype">float</font> numPoylgons, <a class="code" href="types__nl_8h.html#a10">uint32</a> rdrFlags, <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a279">alpha</a>, CCoarseMeshManager *manager)
00486 {
00487 <font class="comment">// Ref</font>
00488 CMeshSlot &slotRef=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot];
00489
00490 <font class="comment">// MeshGeom exist?</font>
00491 <font class="keywordflow">if</font> (slotRef.MeshGeom)
00492 {
00493 <font class="comment">// NB Here, the meshGeom may still be a coarseMesh, but rendered through CMeshGeom</font>
00494 <font class="keywordflow">if</font>(slotRef.Flags&CMeshSlot::CoarseMesh)
00495 {
00496 <font class="comment">// Render only for opaque material</font>
00497 <font class="keywordflow">if</font>(manager && (rdrFlags & IMeshGeom::RenderOpaqueMaterial) )
00498 {
00499 <font class="keywordtype">bool</font> gaDisableZWrite= (rdrFlags & IMeshGeom::RenderGADisableZWrite)?<font class="keyword">true</font>:<font class="keyword">false</font>;
00500
00501 <font class="comment">// Render the CoarseMesh with the manager material</font>
00502 CMaterial &material= manager->getMaterial();
00503
00504 <font class="comment">// modulate material for alphaBlend transition</font>
00505 <font class="comment">// ----------</font>
00506 <font class="comment">// get average sun color for this coarseMesh</font>
00507 CRGBA newCol= trans->getCoarseMeshLighting();
00508
00509 <font class="comment">// Use a CMeshBlender to modify material and driver.</font>
00510 CMeshBlender blender;
00511 blender.prepareRenderForGlobalAlphaCoarseMesh(material, drv, newCol, <a class="code" href="driver__opengl__extension__def_8h.html#a279">alpha</a>, gaDisableZWrite);
00512
00513
00514 <font class="comment">// render simple the coarseMesh</font>
00515 CMeshGeom *meshGeom= safe_cast<CMeshGeom*>(slotRef.MeshGeom);
00516 meshGeom->renderSimpleWithMaterial(drv, trans->getWorldMatrix(), material);
00517
00518
00519 <font class="comment">// resetup standard CoarseMeshMaterial material values</font>
00520 <font class="comment">// ----------</font>
00521 <font class="comment">// blender restore</font>
00522 blender.restoreRenderCoarseMesh(material, drv, gaDisableZWrite);
00523 }
00524 }
00525 <font class="keywordflow">else</font>
00526 {
00527 <font class="comment">// Render the geom mesh</font>
00528 <font class="comment">// Disable ZWrite only if in transition and for rendering Lod1</font>
00529 slotRef.MeshGeom->render (drv, trans, numPoylgons, rdrFlags, <a class="code" href="driver__opengl__extension__def_8h.html#a279">alpha</a>);
00530 }
00531 }
00532 }
00533 <font class="comment">// ***************************************************************************</font>
00534
<a name="l00535"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#c2">00535</a> <font class="keywordtype">void</font> CMeshMultiLod::renderCoarseMesh (<a class="code" href="types__nl_8h.html#a14">uint</a> slot, IDriver *drv, CMeshMultiLodInstance *trans, CCoarseMeshManager *manager)
00536 {
00537 <font class="comment">// if the manager is NULL, quit.</font>
00538 <font class="keywordflow">if</font>(manager==NULL)
00539 <font class="keywordflow">return</font>;
00540
00541 <font class="comment">// Ref</font>
00542 CMeshSlot &slotRef=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot];
00543
00544 <font class="comment">// the slot must be a Coarse mesh</font>
00545 <a class="code" href="debug_8h.html#a6">nlassert</a>(slotRef.Flags&CMeshSlot::CoarseMesh);
00546
00547 <font class="comment">// Mask</font>
00548 <a class="code" href="types__nl_8h.html#a14">uint</a> coarseId=(slotRef.Flags&CMeshSlot::CoarseMeshId)?1:0;
00549 <a class="code" href="types__nl_8h.html#a14">uint</a> maskFlag = CMeshMultiLodInstance::Coarse0Loaded<<coarseId;
00550
00551 <font class="comment">// Get a pointer on the geom mesh</font>
00552 CMeshGeom *meshGeom= safe_cast<CMeshGeom*>(slotRef.MeshGeom);
00553
00554 <font class="comment">// Added in the manager ?</font>
00555 <font class="keywordflow">if</font> ( (trans->Flags&maskFlag) == 0)
00556 {
00557 <font class="comment">// Add to the manager</font>
00558 trans->CoarseMeshId[coarseId]=manager->addMesh (*meshGeom);
00559
00560 <font class="comment">// Added ?</font>
00561 <font class="keywordflow">if</font> (trans->CoarseMeshId[coarseId]!=CCoarseMeshManager::CantAddCoarseMesh)
00562 <font class="comment">// Flag it</font>
00563 trans->Flags|=maskFlag;
00564
00565 <font class="comment">// Dirt the matrix</font>
00566 trans->_LastLodMatrixDate[coarseId]=0;
00567 <font class="comment">// Dirt the lighting. NB: period maximum is 255. Hence the -256, to ensure lighting compute now</font>
00568 trans->_LastLodLightingDate[coarseId]= -0x100;
00569 }
00570
00571 <font class="comment">// Finally loaded ?</font>
00572 <font class="keywordflow">if</font> (trans->Flags&maskFlag)
00573 {
00574 <font class="comment">// Matrix has changed ?</font>
00575 <font class="keywordflow">if</font> ( trans->ITransformable::compareMatrixDate (trans->_LastLodMatrixDate[coarseId]) )
00576 {
00577 <font class="comment">// Get date</font>
00578 trans->_LastLodMatrixDate[coarseId] = trans->ITransformable::getMatrixDate();
00579
00580 <font class="comment">// Set matrix</font>
00581 manager->setMatrixMesh ( trans->CoarseMeshId[coarseId], *meshGeom, trans->getMatrix() );
00582 }
00583
00584 <font class="comment">// Lighting: test if must update lighting, according to date of HrcTrav (num of CScene::render() call).</font>
00585 CScene *scene= trans->getScene();
00586 <font class="keywordflow">if</font>(scene)
00587 {
00588 <a class="code" href="types__nl_8h.html#a11">sint64</a> currentDate= scene->getHrcTrav()->CurrentDate;
00589 <font class="keywordflow">if</font>( trans->_LastLodLightingDate[coarseId] < currentDate - scene->getCoarseMeshLightingUpdate() )
00590 {
00591 <font class="comment">// reset the date.</font>
00592 trans->_LastLodLightingDate[coarseId]= currentDate;
00593
00594 <font class="comment">// get average sun color</font>
00595 CRGBA sunContrib= trans->getCoarseMeshLighting();
00596
00597 <font class="comment">// Set color</font>
00598 manager->setColorMesh ( trans->CoarseMeshId[coarseId], *meshGeom, sunContrib );
00599 }
00600 }
00601 }
00602 }
00603
00604 <font class="comment">// ***************************************************************************</font>
<a name="l00605"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#c3">00605</a> <font class="keywordtype">void</font> CMeshMultiLod::compileDistMax()
00606 {
00607 <font class="comment">// Last element</font>
00608 std::vector<CMeshSlot>::const_iterator ite=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>.end();
00609 ite--;
00610 <font class="keywordflow">if</font> (ite!=<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>.end())
00611 IShape::_DistMax= ite->DistMax;
00612 <font class="keywordflow">else</font>
00613 IShape::_DistMax= -1;
00614 }
00615
00616 <font class="comment">// ***************************************************************************</font>
<a name="l00617"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#a0">00617</a> <font class="keyword">const</font> IMeshGeom& CMeshMultiLod::getMeshGeom (<a class="code" href="types__nl_8h.html#a14">uint</a> slot)<font class="keyword"> const</font>
00618 <font class="keyword"></font>{
00619 <font class="comment">// Checks</font>
00620 <a class="code" href="debug_8h.html#a6">nlassert</a> (slot<<a class="code" href="classNL3D_1_1CMeshMultiLod.html#a1">getNumSlotMesh</a> ());
00621
00622 <font class="keywordflow">return</font> *<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].MeshGeom;
00623 }
00624
00625
00626 <font class="comment">// ***************************************************************************</font>
<a name="l00627"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#a4">00627</a> <font class="keywordtype">void</font> CMeshMultiLod::changeMRMDistanceSetup(<font class="keywordtype">float</font> distanceFinest, <font class="keywordtype">float</font> distanceMiddle, <font class="keywordtype">float</font> distanceCoarsest)
00628 {
00629 <font class="comment">// no-op if empty.</font>
00630 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CMeshMultiLod.html#a1">getNumSlotMesh</a> ()==0)
00631 <font class="keywordflow">return</font>;
00632
00633 <font class="comment">// If not NULL</font>
00634 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[0].MeshGeom==NULL)
00635 <font class="keywordflow">return</font>;
00636
00637 <font class="comment">// verify it is a CMeshMRMGeom. else no-op.</font>
00638 CMeshMRMGeom *mgeom= dynamic_cast<CMeshMRMGeom*>(<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[0].MeshGeom);
00639 <font class="keywordflow">if</font>(mgeom==NULL)
00640 <font class="keywordflow">return</font>;
00641
00642 <font class="comment">// ok, setup.</font>
00643 mgeom->changeMRMDistanceSetup(distanceFinest, distanceMiddle, distanceCoarsest);
00644 }
00645
00646
00647 <font class="comment">// ***************************************************************************</font>
<a name="l00648"></a><a class="code" href="classNL3D_1_1CMeshMultiLod.html#z583_0">00648</a> IMeshGeom *CMeshMultiLod::supportMeshBlockRendering (CTransformShape *trans, <font class="keywordtype">float</font> &polygonCount )<font class="keyword"> const</font>
00649 <font class="keyword"></font>{
00650 IMeshGeom *ret= NULL;
00651
00652 <font class="comment">// get the instance</font>
00653 CMeshMultiLodInstance *instance=safe_cast<CMeshMultiLodInstance*>(trans);
00654
00655 <font class="comment">// Must not be in blend transition.</font>
00656 <font class="keywordflow">if</font> ( (instance->Flags&CMeshMultiLodInstance::Lod0Blend) == 0)
00657 {
00658 <a class="code" href="types__nl_8h.html#a14">uint</a> slot= instance->Lod0;
00659 <font class="comment">// The slot must not be a CoarseMesh</font>
00660 <font class="keywordflow">if</font> ( (<a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].Flags&CMeshSlot::CoarseMesh)==0 )
00661 {
00662 <font class="comment">// MeshGeom exist?</font>
00663 ret= <a class="code" href="classNL3D_1_1CMeshMultiLod.html#o1">_MeshVector</a>[slot].MeshGeom;
00664 }
00665 }
00666
00667 <font class="comment">// Ok if meshGeom is ok.</font>
00668 <font class="keywordflow">if</font>( ret && ret->supportMeshBlockRendering() )
00669 {
00670 polygonCount= instance->PolygonCountLod0;
00671 <font class="keywordflow">return</font> ret;
00672 }
00673 <font class="keywordflow">else</font>
00674 <font class="keywordflow">return</font> NULL;
00675 }
00676
00677
00678 } <font class="comment">// NL3D</font>
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