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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 &amp;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&lt;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 &amp; 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 &amp; 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 &amp; 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&lt;=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 &amp; 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 &amp; 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&amp;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&lt;CMeshGeom*&gt;(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&gt;0; i--)
00136         <font class="keywordflow">for</font> (<font class="keywordtype">int</font> j=0; j&lt;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&gt;<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&lt;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-&gt;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-&gt;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-&gt;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 &amp;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-&gt;Shape= <font class="keyword">this</font>;
00197         mi-&gt;_LastLodMatrixDate[0]=0;
00198         mi-&gt;_LastLodMatrixDate[1]=0;
00199 
00200         <font class="comment">// instanciate the material part of the Mesh, ie the CMeshBase.</font>
00201         CMeshBase::instanciateMeshBase(mi, &amp;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&lt;<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-&gt;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&lt;CPlane&gt;      &amp;pyramid, <font class="keyword">const</font> CMatrix &amp;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&lt;meshCount; i++)
00222         {
00223                 <font class="comment">// Ref on slot</font>
00224                 CMeshSlot &amp;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-&gt;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&lt;CMeshMultiLodInstance*&gt;(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-&gt;getScene()-&gt;getStaticCoarseMeshManager();
00249         }
00250         <font class="keywordflow">else</font>
00251         {
00252                 <font class="comment">// Get the dynamic coarse mesh manager</font>
00253                 manager=instance-&gt;getScene()-&gt;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-&gt;Lod1!=0xffffffff) &amp;&amp; (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-&gt;Lod1, drv, instance, instance-&gt;PolygonCountLod1, rdrFlags, 1.f-instance-&gt;BlendFactor, manager);
00267         }
00268 
00269 
00270         <font class="comment">// Have an opaque pass ?</font>
00271         <font class="keywordflow">if</font> ( (instance-&gt;Flags&amp;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-&gt;Lod0].Flags&amp;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-&gt;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 &amp; (IMeshGeom::RenderOpaqueMaterial | IMeshGeom::RenderPassOpaque);
00287                         rdrFlags|=      ~mask &amp; (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-&gt;Lod0, drv, instance, instance-&gt;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-&gt;Lod0, drv, instance, instance-&gt;PolygonCountLod0, rdrFlags, instance-&gt;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&lt;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&amp;CMeshSlot::CoarseMesh )
00315                         {
00316                                 <font class="comment">// Are we in Alpha Blend Transition?</font>
00317                                 <font class="keywordtype">bool</font>    alphaTrans= instance-&gt;Flags&amp;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-&gt;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&amp;CMeshSlot::CoarseMeshId)?1:0;
00324                                         <a class="code" href="types__nl_8h.html#a14">uint</a> flag=CMeshMultiLodInstance::Coarse0Loaded&lt;&lt;coarseId;
00325                                         
00326                                         <font class="comment">// Coarse mesh loaded ?</font>
00327                                         <font class="keywordflow">if</font> ( instance-&gt;Flags&amp;flag )
00328                                         {
00329                                                 <font class="comment">// Yes, remove it..</font>
00330 
00331                                                 <font class="comment">// Remove the lod</font>
00332                                                 manager-&gt;removeMesh (instance-&gt;CoarseMeshId[coarseId]);
00333 
00334                                                 <font class="comment">// Clear the flag</font>
00335                                                 instance-&gt;Flags&amp;=~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> &amp;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&gt;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&lt;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 &amp;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-&gt;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&lt;meshCount-1) &amp;&amp; _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-&gt;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> &amp;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&lt;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-&gt;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> &amp;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 &amp;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&amp;CMeshSlot::CoarseMesh)
00495                 {
00496                         <font class="comment">// Render only for opaque material</font>
00497                         <font class="keywordflow">if</font>(manager &amp;&amp; (rdrFlags &amp; IMeshGeom::RenderOpaqueMaterial) )
00498                         {
00499                                 <font class="keywordtype">bool</font>    gaDisableZWrite= (rdrFlags &amp; 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       &amp;material= manager-&gt;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-&gt;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&lt;CMeshGeom*&gt;(slotRef.MeshGeom);
00516                                 meshGeom-&gt;renderSimpleWithMaterial(drv, trans-&gt;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-&gt;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 &amp;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&amp;CMeshSlot::CoarseMesh);
00546 
00547         <font class="comment">// Mask</font>
00548         <a class="code" href="types__nl_8h.html#a14">uint</a> coarseId=(slotRef.Flags&amp;CMeshSlot::CoarseMeshId)?1:0;
00549         <a class="code" href="types__nl_8h.html#a14">uint</a> maskFlag = CMeshMultiLodInstance::Coarse0Loaded&lt;&lt;coarseId;
00550 
00551         <font class="comment">// Get a pointer on the geom mesh</font>
00552         CMeshGeom *meshGeom= safe_cast&lt;CMeshGeom*&gt;(slotRef.MeshGeom);
00553 
00554         <font class="comment">// Added in the manager ?</font>
00555         <font class="keywordflow">if</font> ( (trans-&gt;Flags&amp;maskFlag) == 0)
00556         {
00557                 <font class="comment">// Add to the manager</font>
00558                 trans-&gt;CoarseMeshId[coarseId]=manager-&gt;addMesh (*meshGeom);
00559                         
00560                 <font class="comment">// Added ?</font>
00561                 <font class="keywordflow">if</font> (trans-&gt;CoarseMeshId[coarseId]!=CCoarseMeshManager::CantAddCoarseMesh)
00562                         <font class="comment">// Flag it</font>
00563                         trans-&gt;Flags|=maskFlag;
00564 
00565                 <font class="comment">// Dirt the matrix</font>
00566                 trans-&gt;_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-&gt;_LastLodLightingDate[coarseId]= -0x100;
00569         }
00570 
00571         <font class="comment">// Finally loaded ?</font>
00572         <font class="keywordflow">if</font> (trans-&gt;Flags&amp;maskFlag)
00573         {
00574                 <font class="comment">// Matrix has changed ?</font>
00575                 <font class="keywordflow">if</font> ( trans-&gt;ITransformable::compareMatrixDate (trans-&gt;_LastLodMatrixDate[coarseId]) )
00576                 {
00577                         <font class="comment">// Get date</font>
00578                         trans-&gt;_LastLodMatrixDate[coarseId] = trans-&gt;ITransformable::getMatrixDate();
00579 
00580                         <font class="comment">// Set matrix</font>
00581                         manager-&gt;setMatrixMesh ( trans-&gt;CoarseMeshId[coarseId], *meshGeom, trans-&gt;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-&gt;getScene();
00586                 <font class="keywordflow">if</font>(scene)
00587                 {
00588                         <a class="code" href="types__nl_8h.html#a11">sint64</a>  currentDate= scene-&gt;getHrcTrav()-&gt;CurrentDate;
00589                         <font class="keywordflow">if</font>( trans-&gt;_LastLodLightingDate[coarseId] &lt; currentDate - scene-&gt;getCoarseMeshLightingUpdate() )
00590                         {
00591                                 <font class="comment">// reset the date.</font>
00592                                 trans-&gt;_LastLodLightingDate[coarseId]= currentDate;
00593 
00594                                 <font class="comment">// get average sun color</font>
00595                                 CRGBA   sunContrib= trans-&gt;getCoarseMeshLighting();
00596 
00597                                 <font class="comment">// Set color</font>
00598                                 manager-&gt;setColorMesh ( trans-&gt;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&lt;CMeshSlot&gt;::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-&gt;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&amp; 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&lt;<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&lt;CMeshMRMGeom*&gt;(<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-&gt;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> &amp;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&lt;CMeshMultiLodInstance*&gt;(trans);
00654 
00655         <font class="comment">// Must not be in blend transition.</font>
00656         <font class="keywordflow">if</font> ( (instance-&gt;Flags&amp;CMeshMultiLodInstance::Lod0Blend) == 0)
00657         {
00658                 <a class="code" href="types__nl_8h.html#a14">uint</a>    slot= instance-&gt;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&amp;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 &amp;&amp; ret-&gt;supportMeshBlockRendering() )
00669         {
00670                 polygonCount= instance-&gt;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>
</pre></div>

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