/**************************************************************************** * * ATTENTION!!! * * THIS FILE HAS BEEN MODIFIED!!! IT IS NOT PART OF THE OFFICAL * POV-RAY 2.2 DISTRIBUTION!!! * * THIS FILE IS PART OF "FASTER THAN POV-RAY" (VERSION 2.2), * A SPED-UP VERSION OF POV-RAY 2.2. USE AT YOUR OWN RISK!!!!!! * * New files: addon0.c, addon1.c, addon2.c, addon3.c, addon.h * * The additional modules were written by Dieter Bayer. * * Send comments, suggestions, bugs, ideas ... to: * * e-mail: dieter@cip.e-technik.uni-erlangen.de * CIS: 100255.3074 * * All changed/added lines are enclosed in #ifdef DB_CODE ... #endif * * The vista projection was taken from: * * A. Hashimoto, T. Akimoto, K. Mase, and Y. Suenaga, * "Vista Ray-Tracing: High Speed Ray Tracing Using Perspective * Projection Image", New Advances in Computer Graphics, Proceedings * of CG International '89, R. A. Earnshaw, B. Wyvill (Eds.), * Springer, ..., pp. 549-560 * * The idea for the light buffer was taken from: * * E. Haines and D. Greenberg, "The Light Buffer: A Shadow-Testing * Accelerator", IEEE CG&A, Vol. 6, No. 9, Sept. 1986, pp. 6-16 * *****************************************************************************/ /**************************************************************************** * * ATTENTION!!! * * THIS FILE HAS BEEN MODIFIED!!! IT IS NOT PART OF THE OFFICAL * POV-RAY 2.2 DISTRIBUTION!!! * * THIS FILE IS PART OF "FASTER THAN POV-RAY" (VERSION 1.1), * A SPED-UP VERSION OF POV-RAY 2.2. USE AT YOUR OWN RISK!!!!!! * * New files: addon0.c, addon1.c, addon2.c, addon3.c, addon.h * * The additional modules were written by Dieter Bayer. * * Send comments, suggestions, bugs to: * * dieter@cip.e-technik.uni-erlangen.de * * If I have enough time I will try to fix any bugs. * * All changed/added lines are enclosed in #ifdef DB_CODE ... #endif * * The new/changed modules speed-up ray-tracing in two ways: * * - Objects are projected onto the viewing plane a priori. Thus * the number of ray/object intersection tests is reduced for * primary rays. * * - A light buffer is used for every spotlight. Each object is * projected a priori onto the six sides of a cube enclosing * the light source. Thus the number of ray/object intersection * tests is reduced for shadow rays. * * The vista projection of qaudrics was taken from: * * A. Hashimoto, T. Akimoto, K. Mase, and Y. Suenaga, "Vista * Ray-Tracing: High Speed Ray Tracing Using Perspective * Projection Image", New Advances in Computer Graphics, * Proceedings of CG International '89, R. A. Earnshaw, * B. Wyvill (Eds.), Springer, ... * * The idea for the light buffer was taken from: * * E. Haines and D. Greenberg, "The Light Buffer: A Shadow- * Testing Accelerator", IEEE CG&A, Vol. 6, No. 9, Sept. 1986, pp. 6-16 * *****************************************************************************/ /**************************************************************************** * addon.h * * This module was written by Dieter Bayer. * * Some definitions for the addon-modules and lighting.c. * * 01.03.1994 : Creation * * 29.04.1994 : Version 2.0 * ******************************************************************************/ #ifdef DB_CODE /* extended options */ #define USE_VISTA_BUFFER 1 #define USE_LIGHT_BUFFER 2 #define USE_PREVIEW 4 #define USE_BOUND_QUADRICS 8 #define USE_SPLIT_FINITE_UNIONS 16 #define USE_SPLIT_INFINITE_UNIONS 32 /* tracing algorithms */ #define STANDARD_ALGORITHM 1 #define WYVILL_SHARP_ALGORITHM 2 /* flags for the different algorithms to descend the vista/light trees */ #define PROJECTIONS_WITHOUT_SLABS 1 #define PROJECTIONS_WITH_LEAF_SLABS 2 #define PROJECTIONS_WITH_NODE_SLABS 3 /* flag to mark a node as pruned */ #define PRUNE_CHECK 128 #define PRUNE_TEMPORARY 128 #define PRUNE_TEMPORARY_INVERS 127 #ifndef MAX_LB_ENTRY #define MAX_LB_ENTRY 32000 #endif #ifndef MIN_LB_ENTRY #define MIN_LB_ENTRY -32000 #endif #ifndef MAX_VB_ENTRY #define MAX_VB_ENTRY 32000 #endif #ifndef MIN_VB_ENTRY #define MIN_VB_ENTRY -32000 #endif #define MAX_CLIP_POINTS 20 #define POINT_MOD 100 #define XaxisP 0 #define XaxisM 1 #define YaxisP 2 #define YaxisM 3 #define ZaxisP 4 #define ZaxisM 5 #ifndef min #define min(x,y) ((x)<(y)?(x):(y)) #endif #ifndef max #define max(x,y) ((x)>(y)?(x):(y)) #endif #ifndef BOUNDS_VOLUME #define BOUNDS_VOLUME(a,b) \ ((a)=((b).Lengths.x)*((b).Lengths.y)*((b).Lengths.z)) #endif /* due to precision problems with the projection of bounding boxes with infinte dimensions in one or two directions set the infinite volume to a 'low' value */ #ifndef INFINITE_VOLUME #define INFINITE_VOLUME BOUND_HUGE/1000 #endif /* if a bounding box's length is greater than the critical length, set it to an infinite bounding box */ #ifndef CRITICAL_LENGTH #define CRITICAL_LENGTH 1e6 #endif /* public functions defined in addon0.c */ void Clip_Polygon PARAMS((VECTOR *Points, int *PointCnt, VECTOR *VX1, VECTOR *VX2, VECTOR *VY1, VECTOR *VY2, DBL DX1, DBL DX2, DBL DY1, DBL DY2)); int Clip_Line PARAMS((VECTOR *P1, VECTOR *P2, VECTOR *VX1, VECTOR *VX2, VECTOR *VY1, VECTOR *VY2, DBL DX1, DBL DX2, DBL DY1, DBL DY2)); void Begin_Point PARAMS((void)); void Print_Point PARAMS((int Repeat)); void End_Point PARAMS((void)); void MInvers PARAMS((MATRIX *r, MATRIX *m)); void *VB_malloc PARAMS((size_t size)); void *LB_malloc PARAMS((size_t size)); /* public functions defined in addon1.c */ void Init_Project_Tree_Queues PARAMS((void)); void Build_Projections PARAMS((void)); void Init_View_Coordinates PARAMS((void)); void Sort_Objects PARAMS((long int l, long int r)); void Project_Vista PARAMS((MATRIX *A0, TRANSFORM *Trans, DBL *a20, DBL *a02, DBL *a11, DBL *a10, DBL *a01, DBL *a00)); void Build_Vista_Tree PARAMS((void)); /* public functions defined in addon2.c */ void Build_Light_Buffers PARAMS((void)); /* public functions defined in addon3.c */ void Recompute_Bboxes PARAMS((void)); void Remove_Unnecessary_Bounds PARAMS((void)); void Print_Quadric_Stats PARAMS((void)); #endif