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00001 
00007 /* Copyright, 2000 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/light_trav.h"
00029 #include "3d/hrc_trav.h"
00030 #include "3d/clip_trav.h"
00031 #include "3d/root_model.h"
00032 using namespace std;
00033 using namespace NLMISC;
00034 
00035 
00036 namespace       NL3D
00037 {
00038 
00039 using namespace NLMISC;
00040 
00041 // ***************************************************************************
00042 CLightTrav::CLightTrav()
00043 {
00044         _LightedList.reserve(1024);
00045 
00046         LightModelRoot= NULL;
00047         LightingSystemEnabled= false;
00048 }
00049 
00050 // ***************************************************************************
00051 void    CLightTrav::setLightModelRoot(CRootModel *lightModelRoot)
00052 {
00053         nlassert(lightModelRoot);
00054         LightModelRoot= lightModelRoot;
00055 }
00056 
00057 
00058 // ***************************************************************************
00059 IObs            *CLightTrav::createDefaultObs() const
00060 {
00061         return  new CDefaultLightObs;
00062 }
00063 
00064 
00065 // ***************************************************************************
00066 void            CLightTrav::clearLightedList()
00067 {
00068         _LightedList.clear();
00069 }
00070 // ***************************************************************************
00071 void            CLightTrav::addLightedObs(IBaseLightObs *o)
00072 {
00073         _LightedList.push_back(o);
00074 }
00075 
00076 
00077 // ***************************************************************************
00078 void            CLightTrav::traverse()
00079 {
00080         // If lighting System disabled, skip
00081         if(!LightingSystemEnabled)
00082                 return;
00083 
00084 
00085         nlassert(LightModelRoot);
00086 
00087         // clear the quadGrid of dynamicLights
00088         LightingManager.clearDynamicLights();
00089 
00090         // for each lightModel, process her: recompute position, resetLightedModels(), and append to the quadGrid.
00091         LightModelRoot->getObs(LightTravId)->traverse(NULL);
00092 
00093         // for each visible lightable transform
00094         for(uint i=0; i<_LightedList.size(); i++ )
00095         {
00096                 // traverse(), to recompute light contribution (if needed).
00097                 _LightedList[i]->traverse(NULL);
00098         }
00099 
00100 }
00101 
00102 
00103 
00104 // ***************************************************************************
00105 void            IBaseLightObs::init()
00106 {
00107         IObs::init();
00108         nlassert( dynamic_cast<IBaseHrcObs*> (getObs(HrcTravId)) );
00109         HrcObs= static_cast<IBaseHrcObs*> (getObs(HrcTravId));
00110         nlassert( dynamic_cast<IBaseClipObs*> (getObs(ClipTravId)) );
00111         ClipObs= static_cast<IBaseClipObs*> (getObs(ClipTravId));
00112 }
00113 
00114 
00115 
00116 
00117 }
light_trav.cpp
