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- /****************************************************************************
- * quadrics.h
- *
- * This module contains all defines, typedefs, and prototypes for QUADRICS.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 QUADRICS_H
- #define QUADRICS_H
-
- #include "planes.h"
-
-
-
- /*****************************************************************************
- * Global preprocessor defines
- ******************************************************************************/
-
- #define QUADRIC_OBJECT (BASIC_OBJECT)
-
-
-
- /*****************************************************************************
- * Global typedefs
- ******************************************************************************/
-
- typedef struct Quadric_Struct QUADRIC;
-
- struct Quadric_Struct
- {
- OBJECT_FIELDS
- VECTOR Square_Terms;
- VECTOR Mixed_Terms;
- VECTOR Terms;
- DBL Constant;
- };
-
-
-
- /*****************************************************************************
- * Global variables
- ******************************************************************************/
-
- extern METHODS Quadric_Methods;
-
-
-
- /*****************************************************************************
- * Global functions
- ******************************************************************************/
-
- QUADRIC *Create_Quadric PARAMS((void));
- void Compute_Quadric_BBox PARAMS((QUADRIC *Quadric, VECTOR Min, VECTOR Max));
- void Compute_Plane_Min_Max PARAMS((PLANE *Plane, VECTOR Min, VECTOR Max));
-
-
-
- #endif
-