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- /****************************************************************************
- * bcyl.h
- *
- * This module contains all defines, typedefs, and prototypes for BCYL.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 BCYL_H
- #define BCYL_H
-
-
-
- /*****************************************************************************
- * Global preprocessor defines
- ******************************************************************************/
-
- /* Generate additional bcyl statistics. */
-
- #define BCYL_EXTRA_STATS 1
-
-
- /*****************************************************************************
- * Global typedefs
- ******************************************************************************/
-
- typedef struct BCyl_Struct BCYL;
- typedef struct BCyl_Entry_Struct BCYL_ENTRY;
- typedef struct BCyl_Intersection_Struct BCYL_INT;
-
- struct BCyl_Intersection_Struct
- {
- int n; /* Number of cylinder hit */
- DBL d[2]; /* Intersection distance(s) */
- DBL w[2]; /* Intersection parameter(s) */
- };
-
- struct BCyl_Entry_Struct
- {
- short r1, r2; /* Index of min/max segment radius */
- short h1, h2; /* Index of min/max segmnet height */
- };
-
- struct BCyl_Struct
- {
- int number; /* Number of bounding cylinders. */
- short nradius; /* Number of different bound-radii. */
- short nheight; /* Number of different bound-heights. */
- DBL *radius; /* List of different bound-radii. */
- DBL *height; /* List of different bound-heights. */
- BCYL_INT *rint; /* BCyl intersections list. */
- BCYL_INT *hint; /* BCyl intersections list. */
- BCYL_INT *intervals; /* BCyl intersection intervals. */
- BCYL_ENTRY *entry; /* BCyl elements. */
- };
-
-
-
- /*****************************************************************************
- * Global variables
- ******************************************************************************/
-
-
-
- /*****************************************************************************
- * Global functions
- ******************************************************************************/
-
- BCYL *Create_BCyl PARAMS((int, DBL *, DBL *, DBL *, DBL *));
- void Destroy_BCyl PARAMS((BCYL *));
-
- int Intersect_BCyl PARAMS((BCYL *BCyl, VECTOR P, VECTOR D));
-
-
- #endif
-