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00001 
+00007 /* Copyright, 2001 Nevrax Ltd.
+00008  *
+00009  * This file is part of NEVRAX NEL.
+00010  * NEVRAX NEL is free software; you can redistribute it and/or modify
+00011  * it under the terms of the GNU General Public License as published by
+00012  * the Free Software Foundation; either version 2, or (at your option)
+00013  * any later version.
+00014 
+00015  * NEVRAX NEL is distributed in the hope that it will be useful, but
+00016  * WITHOUT ANY WARRANTY; without even the implied warranty of
+00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+00018  * General Public License for more details.
+00019 
+00020  * You should have received a copy of the GNU General Public License
+00021  * along with NEVRAX NEL; see the file COPYING. If not, write to the
+00022  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+00023  * MA 02111-1307, USA.
+00024  */
+00025 
+00026 #ifndef NL_MESH_MULTI_LOD_H
+00027 #define NL_MESH_MULTI_LOD_H
+00028 
+00029 #include "nel/misc/types_nl.h"
+00030 
+00031 #include "3d/mesh.h"
+00032 #include "3d/mesh_base.h"
+00033 #include "3d/mesh_geom.h"
+00034 #include "3d/mrm_parameters.h"
+00035 
+00036 namespace NL3D 
+00037 {
+00038 
+00039 class CMeshMultiLodInstance;
+00040 class CCoarseMeshManager;
+00041 
+00052 class CMeshMultiLod : public CMeshBase
+00053 {
+00054 public:
+00055 
+00057 
+00058 
+00060         class CMeshMultiLodBuild
+00061         {
+00062         public:
+00063 
+00065                 class CBuildSlot
+00066                 {
+00067                 public:
+00077                         enum
+00078                         {
+00079                                 BlendIn                         =       0x01,
+00080                                 BlendOut                        =       0x02,
+00081                                 CoarseMesh                      =       0x04,
+00082                                 IsOpaque                        =       0x08,
+00083                                 IsTransparent           =       0x10,
+00084                         };
+00085 
+00090                         IMeshGeom                       *MeshGeom;
+00091 
+00093                         float                           DistMax;
+00094 
+00096                         float                           BlendLength;
+00097 
+00099                         uint8                           Flags;
+00100                 };
+00101 
+00103                 bool                                            StaticLod;
+00104 
+00106                 CMeshBase::CMeshBaseBuild       BaseMesh;
+00107 
+00109                 std::vector<CBuildSlot>         LodMeshes;
+00110         };
+00111 
+00113         void                    build(CMeshMultiLodBuild &mbuild);
+00114         // @}
+00115 
+00117         // @{
+00118 
+00120         virtual CTransformShape         *createInstance(CScene &scene);
+00121 
+00123         virtual bool    clip(const std::vector<CPlane>  &pyramid, const CMatrix &worldMatrix) ;
+00124 
+00126         virtual void    render(IDriver *drv, CTransformShape *trans, bool passOpaque);
+00127 
+00129         virtual float   getNumTriangles (float distance);
+00130 
+00132         virtual void    getAABBox(NLMISC::CAABBox &bbox) const;
+00133 
+00135         virtual void    serial(NLMISC::IStream &f) throw(NLMISC::EStream);
+00136 
+00138         NLMISC_DECLARE_CLASS(CMeshMultiLod);
+00139 
+00140         // @}
+00141 
+00143         const IMeshGeom& getMeshGeom (uint slot) const;
+00144 
+00146         uint                    getNumSlotMesh () const
+00147         {
+00148                 return _MeshVector.size();
+00149         }
+00150 
+00152         IMeshGeom               *getSlotMesh (uint i, bool& coarseMesh)
+00153         {
+00154                 // Coarse mesh ?
+00155                 coarseMesh=(_MeshVector[i].Flags&CMeshSlot::CoarseMesh)!=0;
+00156 
+00157                 // Return the mesh pointer
+00158                 return _MeshVector[i].MeshGeom;
+00159         }
+00160 
+00162         bool isStatic () const
+00163         {
+00164                 return _StaticLod;
+00165         }
+00166 
+00173         void                    changeMRMDistanceSetup(float distanceFinest, float distanceMiddle, float distanceCoarsest);
+00174 
+00175 
+00177         // @{
+00178         virtual IMeshGeom       *supportMeshBlockRendering (CTransformShape *trans, float &polygonCount ) const;
+00179         // @}
+00180 
+00181 private:
+00182 
+00190         class CMeshSlot
+00191         {
+00192         public:
+00194                 enum
+00195                 {
+00196                         BlendIn                         =       0x01,
+00197                         BlendOut                        =       0x02,
+00198                         CoarseMesh                      =       0x04,
+00199                         IsOpaque                        =       0x08,
+00200                         IsTransparent           =       0x10,
+00201                         CoarseMeshId            =       0x20,
+00202                 };
+00203 
+00205                 CMeshSlot ();
+00206                 ~CMeshSlot ();
+00207 
+00209                 IMeshGeom       *MeshGeom;
+00210 
+00212                 float           A;
+00213 
+00215                 float           B;
+00216 
+00218                 float           DistMax;
+00219 
+00221                 float           EndPolygonCount;
+00222 
+00224                 float           BlendLength;
+00225 
+00227                 uint8           Flags;
+00228 
+00230                 void serial(NLMISC::IStream &f) throw(NLMISC::EStream);
+00231 
+00233                 bool isOpaque() { return (Flags&IsOpaque)!=0; }
+00234 
+00236                 bool isTransparent() { return (Flags&IsTransparent)!=0; }
+00237         };
+00238 
+00240         bool                                            _StaticLod;
+00241 
+00243         std::vector<CMeshSlot>          _MeshVector;
+00244 
+00246         void    clear ();
+00247 
+00249         void    renderMeshGeom (uint slot, IDriver *drv, CMeshMultiLodInstance *trans, float numPoylgons, uint32 rdrFlags, float alpha, CCoarseMeshManager *manager);
+00250 
+00252         void    renderCoarseMesh (uint slot, IDriver *drv, CMeshMultiLodInstance *trans, CCoarseMeshManager *manager);
+00253 
+00255         void    compileDistMax();
+00256 
+00257         friend class CMeshMultiLodBalancingObs;
+00258 };
+00259 
+00260 
+00261 } // NL3D
+00262 
+00263 
+00264 #endif // NL_MESH_MULTI_LOD_H
+00265 
+00266 /* End of mesh_multi_lod.h */
+