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- /****************************************************************************
- * triangle.h
- *
- * This module contains all defines, typedefs, and prototypes for TRIANGLE.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 TRIANGLE_H
- #define TRIANGLE_H
-
-
-
- /*****************************************************************************
- * Global preprocessor defines
- ******************************************************************************/
-
- #define TRIANGLE_OBJECT (PATCH_OBJECT)
- #define SMOOTH_TRIANGLE_OBJECT (PATCH_OBJECT+DOUBLE_ILLUMINATE)
-
-
-
- /*****************************************************************************
- * Global typedefs
- ******************************************************************************/
-
- typedef struct Triangle_Struct TRIANGLE;
- typedef struct Smooth_Triangle_Struct SMOOTH_TRIANGLE;
-
- struct Triangle_Struct
- {
- OBJECT_FIELDS
- VECTOR Normal_Vector;
- DBL Distance;
- unsigned int Dominant_Axis:2;
- unsigned int vAxis:2; /* used only for smooth triangles */
- VECTOR P1, P2, P3;
- };
-
- struct Smooth_Triangle_Struct
- {
- OBJECT_FIELDS
- VECTOR Normal_Vector;
- DBL Distance;
- unsigned int Dominant_Axis:2;
- unsigned int vAxis:2; /* used only for smooth triangles */
- VECTOR P1, P2, P3;
- VECTOR N1, N2, N3, Perp;
- };
-
-
-
- /*****************************************************************************
- * Global variables
- ******************************************************************************/
-
- extern METHODS Triangle_Methods;
- extern METHODS Smooth_Triangle_Methods;
-
-
-
- /*****************************************************************************
- * Global functions
- ******************************************************************************/
-
- TRIANGLE *Create_Triangle PARAMS((void));
- SMOOTH_TRIANGLE *Create_Smooth_Triangle PARAMS((void));
- int Compute_Triangle PARAMS((TRIANGLE *Triangle, int Smooth));
- void Compute_Triangle_BBox PARAMS((TRIANGLE *Triangle));
-
-
-
- #endif
-