| 1 |
greg |
1.1 |
/* Copyright (c) 1991 Regents of the University of California */
|
| 2 |
|
|
|
| 3 |
|
|
/* SCCSid "$SunId$ LBL" */
|
| 4 |
|
|
|
| 5 |
|
|
/*
|
| 6 |
|
|
* Common definitions for interreflection routines.
|
| 7 |
|
|
*/
|
| 8 |
|
|
|
| 9 |
|
|
/*
|
| 10 |
|
|
* Since we've defined our vectors as float below to save space,
|
| 11 |
|
|
* watch out for changes in the definitions of VCOPY() and DOT()
|
| 12 |
|
|
* and don't pass these vectors to fvect routines.
|
| 13 |
|
|
*/
|
| 14 |
|
|
typedef struct ambrec {
|
| 15 |
|
|
float pos[3]; /* position in space */
|
| 16 |
|
|
float dir[3]; /* normal direction */
|
| 17 |
|
|
int lvl; /* recursion level of parent ray */
|
| 18 |
|
|
float weight; /* weight of parent ray */
|
| 19 |
|
|
float rad; /* validity radius */
|
| 20 |
|
|
COLOR val; /* computed ambient value */
|
| 21 |
|
|
float gpos[3]; /* gradient wrt. position */
|
| 22 |
|
|
float gdir[3]; /* gradient wrt. direction */
|
| 23 |
|
|
struct ambrec *next; /* next in list */
|
| 24 |
|
|
} AMBVAL; /* ambient value */
|
| 25 |
|
|
|
| 26 |
|
|
extern COLOR ambval; /* global ambient component */
|
| 27 |
|
|
extern double ambacc; /* ambient accuracy */
|
| 28 |
|
|
extern int ambres; /* ambient resolution */
|
| 29 |
|
|
extern int ambdiv; /* number of divisions for calculation */
|
| 30 |
|
|
extern int ambssamp; /* number of super-samples */
|
| 31 |
|
|
extern int ambounce; /* number of ambient bounces */
|
| 32 |
|
|
extern char *amblist[]; /* ambient include/exclude list */
|
| 33 |
|
|
extern int ambincl; /* include == 1, exclude == 0 */
|
| 34 |
|
|
extern double maxarad; /* maximum ambient radius */
|
| 35 |
|
|
extern double minarad; /* minimum ambient radius */
|
| 36 |
|
|
|
| 37 |
|
|
extern double sumambient(), doambient(), makeambient();
|
| 38 |
greg |
1.2 |
|
| 39 |
|
|
#define AVGREFL 0.5 /* assumed average reflectance */
|
| 40 |
greg |
2.2 |
|
| 41 |
|
|
#define AMBVALSIZ 75 /* number of bytes in portable AMBVAL struct */
|
