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lghtmap.h

00001 /*
00002     Copyright (C) 1998-2001 by Jorrit Tyberghein
00003   
00004     This library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License as published by the Free Software Foundation; either
00007     version 2 of the License, or (at your option) any later version.
00008   
00009     This library is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012     Library General Public License for more details.
00013   
00014     You should have received a copy of the GNU Library General Public
00015     License along with this library; if not, write to the Free
00016     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017 */
00018 
00019 #ifndef __CS_LIGHTMAP_H__
00020 #define __CS_LIGHTMAP_H__
00021 
00022 #include "csutil/scf.h"
00023 #include "csutil/sarray.h"
00024 #include "csgfx/rgbpixel.h"
00025 #include "imesh/thing/lightmap.h"
00026 
00027 class csPolyTexture;
00028 class csThing;
00029 class csPolygon3D;
00030 class csCurve;
00031 class csLight;
00032 class csEngine;
00033 class csDelayedLightingInfo;
00034 class csObject;
00035 struct iLight;
00036 
00037 CS_DECLARE_STATIC_ARRAY (csRGBMap, csRGBpixel);
00038 CS_DECLARE_STATIC_ARRAY (csShadowMapHelper, unsigned char);
00039 
00040 class csShadowMap : public csShadowMapHelper
00041 {
00042 public:
00043   iLight *Light;
00044   csShadowMap *next;
00045 
00046   csShadowMap ();
00047   void Alloc (iLight *l, int w, int h);
00048   void Copy (const csShadowMap *other);
00049 };
00050 
00054 class csLightMap : public iLightMap
00055 {
00057   friend class csPolyTexture;
00058 
00059 private:
00064   csRGBMap static_lm;
00065 
00072   csRGBMap real_lm;
00073 
00078   bool dyn_dirty;
00079 
00084   csShadowMap* first_smap;
00085 
00087   long lm_size;
00088 
00090   int lwidth, lheight;
00092   int rwidth, rheight;
00093   
00098   csRGBpixel mean_color;
00099 
00101   void *cachedata;
00102 
00104   csDelayedLightingInfo *delayed_light_info;
00105 
00106 #if 0
00107 
00116   void ConvertToMixingMode (unsigned char* mr, unsigned char* mg,
00117                             unsigned char* mb, int sz);
00118 #endif
00119 
00123   void SetSize (int w, int h);
00124 
00125 public:
00127   static int lightcell_size;
00129   static int lightcell_shift;
00130 
00132   static int CalcLightMapWidth (int w)
00133   {
00134     return 1 + ((w + lightcell_size - 1) >> lightcell_shift);
00135     //return 1 + ((w + lightcell_size) >> lightcell_shift); //@@@ EXP
00136   }
00138   static int CalcLightMapHeight (int h)
00139   {
00140     return 1 + ((h + lightcell_size - 1) >> lightcell_shift);
00141     //return 1 + ((h + lightcell_size) >> lightcell_shift); //@@@ EXP
00142   }
00143 
00145   csLightMap ();
00147   virtual ~csLightMap ();
00148 
00150   void MakeDirtyDynamicLights () { dyn_dirty = true; }
00151 
00152   bool UpdateRealLightMap ();
00153   
00155   csRGBMap& GetStaticMap () { return static_lm; }
00157   csRGBMap& GetRealMap () { return real_lm; }
00158 
00164   void Alloc (int w, int h, int r, int g, int b);
00165 
00167   void CopyLightMap (csLightMap* source);
00168 
00172   csShadowMap* NewShadowMap (csLight* light, int w, int h);
00173 
00177   void AllocStaticLM (int w, int h);
00178 
00182   csShadowMap* FindShadowMap (csLight* light);
00183 
00190   void DelShadowMap (csShadowMap* plm);
00191 
00196   bool ReadFromCache (int id, int w, int h,
00197     csObject* obj, bool isPolygon, csEngine*);
00198 
00203   void Cache (int id, csPolygon3D* poly, csCurve* curve, csEngine*);
00204 
00212   void ConvertToMixingMode ();
00213 
00217   void ConvertFor3dDriver (bool requirePO2, int maxAspect = 32767);
00218 
00224   static void SetLightCellSize (int size);
00225 
00226   //------------------------ iLightMap implementation ------------------------
00227   SCF_DECLARE_IBASE;
00229   virtual csRGBpixel *GetMapData ();
00231   virtual int GetWidth ()
00232   { return lwidth; }
00234   virtual int GetHeight ()
00235   { return lheight; }
00237   virtual int GetRealWidth ()
00238   { return rwidth; }
00240   virtual int GetRealHeight ()
00241   { return rheight; }
00243   virtual void *GetCacheData ()
00244   { return cachedata; }
00246   virtual void SetCacheData (void *d)
00247   { cachedata = d; }
00249   virtual void GetMeanLighting (int &r, int &g, int &b)
00250   { r = mean_color.red; g = mean_color.green; b = mean_color.blue; }
00252   virtual long GetSize ()
00253   { return lm_size; }
00254 };
00255 
00256 #endif // __CS_LIGHTMAP_H__

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