lghtmap.h Source File

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 struct iCacheManager;
00037 
00038 CS_DECLARE_STATIC_ARRAY (csRGBMap, csRGBpixel);
00039 CS_DECLARE_STATIC_ARRAY (csShadowMapHelper, unsigned char);
00040 
00041 class csShadowMap : public csShadowMapHelper
00042 {
00043 public:
00044   iLight *Light;
00045   csShadowMap *next;
00046 
00047   csShadowMap ();
00048   virtual ~csShadowMap ();
00049   void Alloc (iLight *l, int w, int h);
00050   void Copy (const csShadowMap *other);
00051 };
00052 
00056 class csLightMap : public iLightMap
00057 {
00059   friend class csPolyTexture;
00060 
00061 private:
00066   csRGBMap static_lm;
00067 
00074   csRGBMap real_lm;
00075 
00080   bool dyn_dirty;
00081 
00086   csShadowMap* first_smap;
00087 
00089   long lm_size;
00090 
00092   int lwidth, lheight;
00094   int rwidth, rheight;
00095 
00100   csRGBpixel mean_color;
00101 
00103   void *cachedata;
00104 
00106   csDelayedLightingInfo *delayed_light_info;
00107 
00108 #if 0
00109 
00118   void ConvertToMixingMode (unsigned char* mr, unsigned char* mg,
00119                             unsigned char* mb, int sz);
00120 #endif
00121 
00125   void SetSize (int w, int h);
00126 
00127 public:
00129   static int lightcell_size;
00131   static int lightcell_shift;
00132 
00134   static int CalcLightMapWidth (int w)
00135   {
00136     return 1 + ((w + lightcell_size - 1) >> lightcell_shift);
00137     //return 1 + ((w + lightcell_size) >> lightcell_shift); //@@@ EXP
00138   }
00140   static int CalcLightMapHeight (int h)
00141   {
00142     return 1 + ((h + lightcell_size - 1) >> lightcell_shift);
00143     //return 1 + ((h + lightcell_size) >> lightcell_shift); //@@@ EXP
00144   }
00145 
00147   csLightMap ();
00149   virtual ~csLightMap ();
00150 
00152   void MakeDirtyDynamicLights () { dyn_dirty = true; }
00153 
00154   bool UpdateRealLightMap ();
00155 
00157   csRGBMap& GetStaticMap () { return static_lm; }
00159   csRGBMap& GetRealMap () { return real_lm; }
00160 
00166   void Alloc (int w, int h, int r, int g, int b);
00167 
00169   void CopyLightMap (csLightMap* source);
00170 
00174   csShadowMap* NewShadowMap (csLight* light, int w, int h);
00175 
00179   void AllocStaticLM (int w, int h);
00180 
00184   csShadowMap* FindShadowMap (csLight* light);
00185 
00192   void DelShadowMap (csShadowMap* plm);
00193 
00198   bool ReadFromCache (iCacheManager* cache_mgr, int id, int w, int h,
00199     csObject* obj, bool isPolygon, csEngine*);
00200 
00205   void Cache (iCacheManager* cache_mgr, int id, csPolygon3D* poly,
00206         csCurve* curve, csEngine*);
00207 
00215   void ConvertToMixingMode ();
00216 
00220   void ConvertFor3dDriver (bool requirePO2, int maxAspect = 32767);
00221 
00227   static void SetLightCellSize (int size);
00228 
00229   //------------------------ iLightMap implementation ------------------------
00230   SCF_DECLARE_IBASE;
00232   virtual csRGBpixel *GetMapData ();
00234   virtual int GetWidth ()
00235   { return lwidth; }
00237   virtual int GetHeight ()
00238   { return lheight; }
00240   virtual int GetRealWidth ()
00241   { return rwidth; }
00243   virtual int GetRealHeight ()
00244   { return rheight; }
00246   virtual void *GetCacheData ()
00247   { return cachedata; }
00249   virtual void SetCacheData (void *d)
00250   { cachedata = d; }
00252   virtual void GetMeanLighting (int &r, int &g, int &b)
00253   { r = mean_color.red; g = mean_color.green; b = mean_color.blue; }
00255   virtual long GetSize ()
00256   { return lm_size; }
00257 };
00258 
00259 #endif // __CS_LIGHTMAP_H__