| 1 |
greg |
2.26 |
/* RCSid $Id: ambient.h,v 2.25 2019/05/14 17:39:10 greg Exp $ */
|
| 2 |
greg |
1.1 |
/*
|
| 3 |
|
|
* Common definitions for interreflection routines.
|
| 4 |
greg |
2.7 |
*
|
| 5 |
|
|
* Include after ray.h
|
| 6 |
|
|
*/
|
| 7 |
greg |
2.19 |
|
| 8 |
schorsch |
2.9 |
#ifndef _RAD_AMBIENT_H_
|
| 9 |
|
|
#define _RAD_AMBIENT_H_
|
| 10 |
|
|
#ifdef __cplusplus
|
| 11 |
|
|
extern "C" {
|
| 12 |
|
|
#endif
|
| 13 |
greg |
1.1 |
|
| 14 |
greg |
2.19 |
/*
|
| 15 |
|
|
* Normal and u-vector directions encoded using dircode.c
|
| 16 |
|
|
*/
|
| 17 |
|
|
typedef struct ambrec {
|
| 18 |
|
|
struct ambrec *next; /* next in list */
|
| 19 |
|
|
float pos[3]; /* position in space */
|
| 20 |
|
|
int32 ndir; /* encoded surface normal */
|
| 21 |
|
|
int32 udir; /* u-vector direction */
|
| 22 |
greg |
2.24 |
short lvl; /* recursion level of parent ray */
|
| 23 |
greg |
2.19 |
float weight; /* weight of parent ray */
|
| 24 |
|
|
float rad[2]; /* anisotropic radii (rad[0] <= rad[1]) */
|
| 25 |
|
|
COLOR val; /* computed ambient value */
|
| 26 |
|
|
float gpos[2]; /* (u,v) gradient wrt. position */
|
| 27 |
|
|
float gdir[2]; /* (u,v) gradient wrt. direction */
|
| 28 |
greg |
2.22 |
uint32 corral; /* potential light leak direction flags */
|
| 29 |
greg |
2.19 |
} AMBVAL; /* ambient value */
|
| 30 |
|
|
|
| 31 |
|
|
typedef struct ambtree {
|
| 32 |
|
|
AMBVAL *alist; /* ambient value list */
|
| 33 |
|
|
struct ambtree *kid; /* 8 child nodes */
|
| 34 |
|
|
} AMBTREE; /* ambient octree */
|
| 35 |
|
|
|
| 36 |
|
|
extern double maxarad; /* maximum ambient radius */
|
| 37 |
|
|
extern double minarad; /* minimum ambient radius */
|
| 38 |
|
|
|
| 39 |
|
|
#ifndef AVGREFL
|
| 40 |
|
|
#define AVGREFL 0.5 /* assumed average reflectance */
|
| 41 |
|
|
#endif
|
| 42 |
|
|
|
| 43 |
greg |
2.22 |
#define AMBVALSIZ 67 /* number of bytes in portable AMBVAL struct */
|
| 44 |
|
|
#define AMBMAGIC 559 /* magic number for ambient value files */
|
| 45 |
greg |
2.19 |
#define AMBFMT "Radiance_ambval" /* format id string */
|
| 46 |
|
|
|
| 47 |
|
|
/* defined in ambient.c */
|
| 48 |
|
|
extern void setambres(int ar);
|
| 49 |
|
|
extern void setambacc(double newa);
|
| 50 |
|
|
extern void setambient(void);
|
| 51 |
|
|
extern void multambient(COLOR aval, RAY *r, FVECT nrm);
|
| 52 |
|
|
extern void ambdone(void);
|
| 53 |
|
|
extern void ambnotify(OBJECT obj);
|
| 54 |
|
|
extern int ambsync(void);
|
| 55 |
|
|
/* defined in ambcomp.c */
|
| 56 |
|
|
extern int doambient(COLOR acol, RAY *r, double wt,
|
| 57 |
|
|
FVECT uv[2], float rad[2],
|
| 58 |
greg |
2.22 |
float gpos[2], float gdir[2], uint32 *crlp);
|
| 59 |
greg |
2.19 |
/* defined in ambio.c */
|
| 60 |
|
|
extern void putambmagic(FILE *fp);
|
| 61 |
|
|
extern int hasambmagic(FILE *fp);
|
| 62 |
|
|
extern int writambval(AMBVAL *av, FILE *fp);
|
| 63 |
greg |
2.20 |
extern int readambval(AMBVAL *av, FILE *fp);
|
| 64 |
greg |
2.19 |
extern int ambvalOK(AMBVAL *av);
|
| 65 |
|
|
|
| 66 |
schorsch |
2.9 |
#ifdef __cplusplus
|
| 67 |
|
|
}
|
| 68 |
greg |
2.7 |
#endif
|
| 69 |
schorsch |
2.9 |
#endif /* _RAD_AMBIENT_H_ */
|
| 70 |
|
|
|
