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00001 
+00007 /* Copyright, 2000-2002 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 #include "std3d.h"
+00027 
+00028 #include "3d/ig_surface_light.h"
+00029 
+00030 
+00031 namespace NL3D 
+00032 {
+00033 
+00034 // ***************************************************************************
+00035 CIGSurfaceLight::CIGSurfaceLight()
+00036 {
+00037         _Owner= NULL;
+00038         _CellSize= 1;
+00039         _OOCellSize= 1;
+00040 }
+00041 
+00042 // ***************************************************************************
+00043 void                    CIGSurfaceLight::setOwner(CInstanceGroup *owner)
+00044 {
+00045         nlassert(owner!=NULL);
+00046         _Owner= owner;
+00047 }
+00048 
+00049 // ***************************************************************************
+00050 void                    CIGSurfaceLight::build(const TRetrieverGridMap &retrieverGridMap, float cellSize,
+00051         const std::vector<uint> &plRemap)
+00052 {
+00053         _RetrieverGridMap= retrieverGridMap;
+00054         nlassert(cellSize>0);
+00055         _CellSize= cellSize;
+00056         _OOCellSize= 1.f/_CellSize;
+00057 
+00058         // remap indices.
+00059         ItRetrieverGridMap      it;
+00060         for(it= _RetrieverGridMap.begin(); it!=_RetrieverGridMap.end(); it++)
+00061         {
+00062                 // For all grids of this retriever
+00063                 for(uint iGrid= 0; iGrid<it->second.Grids.size(); iGrid++)
+00064                 {
+00065                         CSurfaceLightGrid       &grid= it->second.Grids[iGrid];
+00066 
+00067                         // For all cells of this grid.
+00068                         for(uint iCell= 0; iCell<grid.Cells.size(); iCell++)
+00069                         {
+00070                                 CSurfaceLightGrid::CCellCorner  &cell= grid.Cells[iCell];
+00071 
+00072                                 // For all point light id.
+00073                                 for(uint lid= 0; lid<CSurfaceLightGrid::NumLightPerCorner; lid++)
+00074                                 {
+00075                                         if(cell.Light[lid] == 0xFF)
+00076                                                 break;
+00077                                         else
+00078                                                 cell.Light[lid]= plRemap[cell.Light[lid]];
+00079                                 }
+00080 
+00081                                 // remap ambient light
+00082                                 if(cell.LocalAmbientId!=0xFF)
+00083                                         cell.LocalAmbientId= plRemap[cell.LocalAmbientId];
+00084                         }
+00085                 }
+00086         }
+00087 }
+00088 
+00089 // ***************************************************************************
+00090 void                    CIGSurfaceLight::clear()
+00091 {
+00092         _RetrieverGridMap.clear();
+00093         _CellSize= 1;
+00094         _OOCellSize= 1;
+00095 }
+00096 
+00097 // ***************************************************************************
+00098 void                    CIGSurfaceLight::serial(NLMISC::IStream &f)
+00099 {
+00100         (void)f.serialVersion(0);
+00101 
+00102         f.serial(_CellSize);
+00103         f.serial(_OOCellSize);
+00104         f.serialCont(_RetrieverGridMap);
+00105 }
+00106 
+00107 // ***************************************************************************
+00108 bool                    CIGSurfaceLight::getStaticLightSetup(const std::string &retrieverIdentifier, sint surfaceId, const CVector &localPos, 
+00109         std::vector<CPointLightInfluence> &pointLightList, uint8 &sunContribution, NLMISC::CRGBA &localAmbient)
+00110 {
+00111         nlassert(_Owner);
+00112 
+00113         // default
+00114         sunContribution= 255;
+00115         localAmbient.set(0,0,0,0);
+00116 
+00117         ItRetrieverGridMap      it;
+00118         it= _RetrieverGridMap.find(retrieverIdentifier);
+00119         // If bad ident
+00120         if(it==_RetrieverGridMap.end())
+00121                 return false;
+00122         CRetrieverLightGrid             &rlg= it->second;
+00123         // if bad surfaceId
+00124         if(surfaceId<0 || surfaceId>= (sint)rlg.Grids.size())
+00125                 return false;
+00126 
+00127         // Else, ok, get it.
+00128         rlg.Grids[surfaceId].getStaticLightSetup(localPos, pointLightList, sunContribution, *this, localAmbient);
+00129         return true;
+00130 }
+00131 
+00132 
+00133 
+00134 
+00135 } // NL3D
+
ig_surface_light.cpp
