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- /****************************************************************************
- * point.h
- *
- * This module contains all defines, typedefs, and prototypes for POINT.C.
- *
- * from Persistence of Vision(tm) Ray Tracer
- * Copyright 1996 Persistence of Vision Team
- *---------------------------------------------------------------------------
- * NOTICE: This source code file is provided so that users may experiment
- * with enhancements to POV-Ray and to port the software to platforms other
- * than those supported by the POV-Ray Team. There are strict rules under
- * which you are permitted to use this file. The rules are in the file
- * named POVLEGAL.DOC which should be distributed with this file. If
- * POVLEGAL.DOC is not available or for more info please contact the POV-Ray
- * Team Coordinator by leaving a message in CompuServe's Graphics Developer's
- * Forum. The latest version of POV-Ray may be found there as well.
- *
- * This program is based on the popular DKB raytracer version 2.12.
- * DKBTrace was originally written by David K. Buck.
- * DKBTrace Ver 2.0-2.12 were written by David K. Buck & Aaron A. Collins.
- *
- *****************************************************************************/
-
-
- #ifndef POINT_H
- #define POINT_H
-
- #include "vlbuffer.h"
-
-
-
- /*****************************************************************************
- * Global preprocessor defines
- ******************************************************************************/
-
- #define LIGHT_OBJECT (COMPOUND_OBJECT+PATCH_OBJECT+LIGHT_SOURCE_OBJECT)
-
-
-
- /* Light source types. */
-
- #define POINT_SOURCE 1
- #define SPOT_SOURCE 2
- #define FILL_LIGHT_SOURCE 3
- #define CYLINDER_SOURCE 4
-
-
-
- /*****************************************************************************
- * Global typedefs
- ******************************************************************************/
-
- typedef struct Light_Source_Struct LIGHT_SOURCE;
-
- struct Light_Source_Struct
- {
- COMPOUND_FIELDS
- COLOUR Colour;
- VECTOR Direction, Center, Points_At, Axis1, Axis2;
- DBL Coeff, Radius, Falloff;
- DBL Fade_Distance, Fade_Power;
- LIGHT_SOURCE *Next_Light_Source;
- unsigned char Light_Type, Area_Light, Jitter, Track;
- int Area_Size1, Area_Size2;
- int Adaptive_Level;
- int Atmospheric_Attenuation;
- int Atmosphere_Interaction;
- COLOUR **Light_Grid;
- OBJECT *Shadow_Cached_Object;
-
- /* Light buffers for the six general directions in space. [DB 9/94] */
-
- PROJECT_TREE_NODE *Light_Buffer[6];
- };
-
-
-
-
- /*****************************************************************************
- * Global variables
- ******************************************************************************/
-
-
-
-
- /*****************************************************************************
- * Global functions
- ******************************************************************************/
-
- LIGHT_SOURCE *Create_Light_Source PARAMS((void));
- DBL Attenuate_Light PARAMS((LIGHT_SOURCE *Light_Source, RAY *Light_Source_Ray, DBL Distance));
- COLOUR **Create_Light_Grid PARAMS((int Size1, int Size2));
-
-
-
- #endif
-