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EnigmA AMIGA RUN 35 (1999)(G.R. Edizioni)(IT)[!][issue 1999-03].iso
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ray_cast.h
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C/C++ Source or Header
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1997-07-12
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2KB
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72 lines
////////////////////////////////////////////////////////////
//
// RAY_CAST.H - Ray Cast Form Factor Class
//
// Version: 1.03A
//
// History: 94/08/23 - Version 1.00A release.
// 94/12/16 - Version 1.01A release.
// 95/02/05 - Version 1.02A release.
// 95/07/21 - Version 1.02B release.
// 96/02/14 - Version 1.02C release.
// 96/04/01 - Version 1.03A release.
//
// Compilers: Microsoft Visual C/C++ Professional V1.5
// Borland C++ Version 4.5
//
// Author: Ian Ashdown, P.Eng.
// byHeart Software Limited
// 620 Ballantree Road
// West Vancouver, B.C.
// Canada V7S 1W3
// Tel. (604) 922-6148
// Fax. (604) 987-7621
//
// Copyright 1994-1996 byHeart Software Limited
//
// The following source code has been derived from:
//
// Ashdown, I. 1994. Radiosity: A Programmer's
// Perspective. New York, NY: John Wiley & Sons.
//
// It may be freely copied, redistributed, and/or modified
// for personal use ONLY, as long as the copyright notice
// is included with all source code files.
//
////////////////////////////////////////////////////////////
#ifndef _RAY_CAST_H
#define _RAY_CAST_H
#include "parse.h"
// Maximum number of rays to be cast
static const int RC_NumRays = 4;
class RayCast // Ray cast form factor determination
{
private:
double ray_area; // Intersection area
double src_area; // Source patch area
double selector; // Triangle selector
Patch3 *psrc; // Source patch pointer
Patch3 *pcache; // Last occluding patch
Vector3 end; // Intersection vector
Vector3 ray_dir; // Ray direction
Vector3 src_center; // Source patch center
Vector3 src_norm; // Source patch normal
Vector3 start; // Receiver vertex vector
Vector3 v0, v1, v2, v3; // Vertex vectors
void Select( Vector3 * );
BOOL CheckOcclusion( Instance * );
BOOL TestPatch( Patch3 * );
public:
void Init( Patch3 * );
double CalcFormFactor( Vertex3 *, Instance * );
};
#endif