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- /****************************************************************************
- * discs.h
- *
- * This module contains all defines, typedefs, and prototypes for DISCS.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 DISCS_H
- #define DISCS_H
-
-
-
- /*****************************************************************************
- * Global preprocessor defines
- ******************************************************************************/
-
- #define DISC_OBJECT (BASIC_OBJECT)
-
-
-
- /*****************************************************************************
- * Global typedefs
- ******************************************************************************/
-
- typedef struct Disc_Struct DISC;
-
- struct Disc_Struct
- {
- OBJECT_FIELDS
- TRANSFORM *Trans; /* Transformation of a Disc object */
- VECTOR center; /* Center of the disc */
- VECTOR normal; /* Direction perpendicular to the disc (plane normal) */
- DBL d; /* The constant part of the plane equation */
- DBL iradius2; /* Distance from center to inner circle of the disc */
- DBL oradius2; /* Distance from center to outer circle of the disc */
- };
-
-
-
- /*****************************************************************************
- * Global variables
- ******************************************************************************/
-
-
-
-
- /*****************************************************************************
- * Global functions
- ******************************************************************************/
-
- DISC *Create_Disc PARAMS((void));
- void Compute_Disc PARAMS((DISC *Disc));
-
- #endif
-