1 /****************************************************************************
4 * This module contains all defines, typedefs, and prototypes for LIGHTING.C.
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.
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.
22 *****************************************************************************/
32 /*****************************************************************************
33 * Global preprocessor defines
34 ******************************************************************************/
39 /*****************************************************************************
41 ******************************************************************************/
46 /*****************************************************************************
48 ******************************************************************************/
52 /*****************************************************************************
54 ******************************************************************************/
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
);