gfx/povray/render.h

   1 /****************************************************************************
   2 *                   render.h
   3 *
   4 *  This module contains all defines, typedefs, and prototypes for RENDER.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 RENDER_H
  26 #define RENDER_H
  27
  28
  29
  30 /*****************************************************************************
  31 * Global preprocessor defines
  32 ******************************************************************************/
  33
  34
  35
  36
  37 /*****************************************************************************
  38 * Global typedefs
  39 ******************************************************************************/
  40
  41 typedef enum
  42 {
  43   CSV,
  44   SYS,
  45   PPM,
  46   TARGA,
  47   PNG,
  48   NONE
  49 } Histogram_Types ;
  50
  51 /*****************************************************************************
  52 * Global variables
  53 ******************************************************************************/
  54
  55 extern int Trace_Level, Max_Trace_Level, Highest_Trace_Level;
  56
  57 extern DBL ADC_Bailout;
  58
  59 extern unsigned long              *histogram_grid ;
  60 extern unsigned long              max_histogram_value ;
  61 extern FILE_HANDLE                *Histogram_File_Handle ;
  62
  63 /*****************************************************************************
  64 * Global functions
  65 ******************************************************************************/
  66
  67 void Read_Rendered_Part (char *New_Fname);
  68 void Start_Tracing_Mosaic_Smooth (int StartPixelSize, int EndPixelSize);
  69 void Start_Tracing_Mosaic_Preview (int StartPixelSize, int EndPixelSize);
  70 void Start_Adaptive_Tracing (void);
  71 void Start_Non_Adaptive_Tracing (void);
  72 void Initialize_Renderer (void);
  73 void Terminate_Renderer (void);
  74 DBL  Trace (RAY *Ray, COLOUR Colour, DBL Weight);
  75 void Check_User_Abort (int Do_Stats);
  76 void write_histogram (char *filename);
  77 void destroy_histogram (void);
  78
  79 #endif