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OS/2 Shareware BBS: Graphics
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povsrc31.zip
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bsphere.h
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C/C++ Source or Header
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1999-10-20
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/****************************************************************************
* bsphere.h
*
* This module contains all defines, typedefs, and prototypes for BSPHERE.C.
*
* from Persistence of Vision(tm) Ray Tracer
* Copyright 1996,1999 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 email to team-coord@povray.org or visit us on the web at
* http://www.povray.org. The latest version of POV-Ray may be found at this site.
*
* 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 BSPHERE_H
#define BSPHERE_H
/*****************************************************************************
* Global preprocessor defines
******************************************************************************/
/*****************************************************************************
* Global typedefs
******************************************************************************/
typedef struct BSphere_Tree_Struct BSPHERE_TREE;
struct BSphere_Tree_Struct
{
short Entries; /* Number of components (node if 0) */
VECTOR C; /* Center of bounding sphere */
DBL r2; /* Radius^2 of bounding sphere */
BSPHERE_TREE **Node; /* if node: children; if leaf: element */
};
/*****************************************************************************
* Global variables
******************************************************************************/
/*****************************************************************************
* Global functions
******************************************************************************/
void Build_Bounding_Sphere_Hierarchy (BSPHERE_TREE **Root, int nElem, BSPHERE_TREE **Elements);
void Destroy_Bounding_Sphere_Hierarchy (BSPHERE_TREE *Node);
#endif