nevrax.org : docs

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_GEOM_H
+00027 #define NL_MESH_GEOM_H
+00028 
+00029 
+00030 #include "nel/misc/types_nl.h"
+00031 #include "nel/misc/stream.h"
+00032 #include "nel/misc/plane.h"
+00033 #include "nel/misc/matrix.h"
+00034 
+00035 
+00036 namespace NLMISC
+00037 {
+00038         class CAABBoxExt;
+00039 }
+00040 
+00041 namespace NL3D 
+00042 {
+00043 
+00044 
+00045 class IDriver;
+00046 class CTransformShape;
+00047 class CMeshBaseInstance;
+00048 class CMeshBlockManager;
+00049 class CScene;
+00050 class CRenderTrav;
+00051 using NLMISC::CPlane;
+00052 using NLMISC::CMatrix;
+00053 
+00054 
+00055 // ***************************************************************************
+00059 class CMeshGeomRenderContext
+00060 {
+00061 public:
+00062         IDriver                 *Driver;
+00063         CScene                  *Scene;
+00064         CRenderTrav             *RenderTrav;
+00065         // true if the mesh is rendered through a VBHeap currently activated in driver.
+00066         bool                    RenderThroughVBHeap;
+00067 };
+00068 
+00069 
+00070 // ***************************************************************************
+00077 class IMeshGeom : public NLMISC::IStreamable
+00078 {
+00079 public:
+00080 
+00082         enum    TRenderFlag
+00083         {
+00084                 RenderOpaqueMaterial= 1,                // set when the mesh geom must render opaque material
+00085                 RenderTransparentMaterial= 2,   // set when the mesh geom must render transparent material
+00086                 RenderPassOpaque=4,                             // set when the current traversal rdrPass is the opaque pass
+00087                 RenderGlobalAlpha= 8,                   // set when the caller wants to draw material with global alpha
+00088                 RenderGADisableZWrite= 16,              // only when globalAlpha is used. set if must disable ZWrite
+00089         };
+00090 
+00091 public:
+00092 
+00094         IMeshGeom();
+00096         virtual ~IMeshGeom();
+00097 
+00098 
+00101         virtual void    initInstance(CMeshBaseInstance *mbi) =0;
+00102 
+00103 
+00110         virtual bool    clip(const std::vector<CPlane>  &pyramid, const CMatrix &worldMatrix) {return true;}
+00111 
+00115         virtual void    render(IDriver *drv, CTransformShape *trans, float polygonCount, uint32 rdrFlags, float globalAlpha) =0;
+00116 
+00121         virtual void    renderSkin(CTransformShape *trans, float alphaMRM) =0;
+00122 
+00123 
+00125         // @{
+00126 
+00134         virtual float   getNumTriangles (float distance) =0;
+00135 
+00138         virtual const NLMISC::CAABBoxExt& getBoundingBox() const =0;
+00139 
+00140         // @}
+00141 
+00142 
+00144 
+00148         // @{
+00149 
+00153         virtual bool    supportMeshBlockRendering () const =0;
+00154 
+00158         virtual bool    sortPerMaterial() const =0;
+00159 
+00163         virtual uint    getNumRdrPasses() const =0;
+00164 
+00168         virtual void    beginMesh(CMeshGeomRenderContext &rdrCtx) =0;
+00169 
+00173         virtual void    activeInstance(CMeshGeomRenderContext &rdrCtx, CMeshBaseInstance *inst, float polygonCount) =0;
+00174 
+00178         virtual void    renderPass(CMeshGeomRenderContext &rdrCtx, CMeshBaseInstance *inst, float polygonCount, uint rdrPass) =0;
+00179 
+00183         virtual void    endMesh(CMeshGeomRenderContext &rdrCtx) =0;
+00184 
+00188         virtual bool    getVBHeapInfo(uint &vertexFormat, uint &numVertices) {return false;}
+00189 
+00195         virtual void    computeMeshVBHeap(void *dst, uint indexStart)  {}
+00196 
+00197         // @}
+00198 
+00199 
+00200 // *****************
+00201 private:
+00202 
+00204         // @{
+00205         friend class CMeshBlockManager;
+00206 
+00208         sint32                          _RootInstanceId;
+00209 
+00211         CMeshBlockManager       *_MeshBlockManager;
+00213         uint                            _MeshVBHeapId;
+00215         uint                            _MeshVBHeapIndexStart;
+00216 
+00217         // @}
+00218 
+00219 };
+00220 
+00221 
+00222 } // NL3D
+00223 
+00224 
+00225 #endif // NL_MESH_GEOM_H
+00226 
+00227 /* End of mesh_geom.h */
+