gfx/povray/lighting.h

   1 /****************************************************************************
   2 *                   lighting.h
   3 *
   4 *  This module contains all defines, typedefs, and prototypes for LIGHTING.C.
   5 *
   6 *  from Persistence of Vision(tm) Ray Tracer
   7 *  Copyright 1996,1999 Persistence of Vision Team
   8 *---------------------------------------------------------------------------
   9 *  NOTICE: This source code file is provided so that users may experiment
  10 *  with enhancements to POV-Ray and to port the software to platforms other
  11 *  than those supported by the POV-Ray Team.  There are strict rules under
  12 *  which you are permitted to use this file.  The rules are in the file
  13 *  named POVLEGAL.DOC which should be distributed with this file.
  14 *  If POVLEGAL.DOC is not available or for more info please contact the POV-Ray
  15 *  Team Coordinator by email to team-coord@povray.org or visit us on the web at
  16 *  http://www.povray.org. The latest version of POV-Ray may be found at this site.
  17 *
  18 * This program is based on the popular DKB raytracer version 2.12.
  19 * DKBTrace was originally written by David K. Buck.
  20 * DKBTrace Ver 2.0-2.12 were written by David K. Buck & Aaron A. Collins.
  21 *
  22 *****************************************************************************/
  23
  24
  25 #ifndef LIGHTING_H
  26 #define LIGHTING_H
  27
  28 #include "point.h"
  29
  30
  31
  32 /*****************************************************************************
  33 * Global preprocessor defines
  34 ******************************************************************************/
  35
  36
  37
  38
  39 /*****************************************************************************
  40 * Global typedefs
  41 ******************************************************************************/
  42
  43
  44
  45
  46 /*****************************************************************************
  47 * Global variables
  48 ******************************************************************************/
  49
  50
  51
  52 /*****************************************************************************
  53 * Global functions
  54 ******************************************************************************/
  55
  56 void Determine_Apparent_Colour (INTERSECTION *Ray_Intersection, COLOUR Colour, RAY *Ray, DBL Weight);
  57 void Initialize_Lighting_Code (void);
  58 void Reinitialize_Lighting_Code (int Number_Of_Entries, TEXTURE ***Textures, DBL **Weights);
  59 void Deinitialize_Lighting_Code (void);
  60 int Test_Shadow (LIGHT_SOURCE *Light, DBL *Depth, RAY *Light_Source_Ray, RAY *Eye_Ray, VECTOR P, COLOUR Colour);
  61
  62
  63
  64 #endif