| 1 |
/* RCSid $Id: ambient.h,v 2.26 2022/03/07 17:52:14 greg Exp $ */
|
| 2 |
/*
|
| 3 |
* Common definitions for interreflection routines.
|
| 4 |
*
|
| 5 |
* Include after ray.h
|
| 6 |
*/
|
| 7 |
|
| 8 |
#ifndef _RAD_AMBIENT_H_
|
| 9 |
#define _RAD_AMBIENT_H_
|
| 10 |
#ifdef __cplusplus
|
| 11 |
extern "C" {
|
| 12 |
#endif
|
| 13 |
|
| 14 |
/*
|
| 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 |
short lvl; /* recursion level of parent ray */
|
| 23 |
float weight; /* weight of parent ray */
|
| 24 |
float rad[2]; /* anisotropic radii (rad[0] <= rad[1]) */
|
| 25 |
float gpos[2]; /* (u,v) gradient wrt. position */
|
| 26 |
float gdir[2]; /* (u,v) gradient wrt. direction */
|
| 27 |
uint32 corral; /* potential light leak direction flags */
|
| 28 |
SCOLOR val; /* computed indirect irradiance (last!) */
|
| 29 |
} 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 |
#define AMBVALSIZ (64+AMB_CNDX[3]) /* number of bytes in portable AMBVAL */
|
| 44 |
#define AMBMAGIC 561 /* magic number for ambient value file */
|
| 45 |
#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(SCOLOR 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(SCOLOR acol, RAY *r, double wt,
|
| 57 |
FVECT uv[2], float rad[2],
|
| 58 |
float gpos[2], float gdir[2], uint32 *crlp);
|
| 59 |
/* defined in ambio.c */
|
| 60 |
extern int *AMB_CNDX; /* open ambient file RGBE indices */
|
| 61 |
extern float *AMB_WLPART; /* open ambient file spectral range */
|
| 62 |
extern int amb_headline(char *hl, void *p);
|
| 63 |
extern void putambmagic(FILE *fp);
|
| 64 |
extern int hasambmagic(FILE *fp);
|
| 65 |
extern int writambval(AMBVAL *av, FILE *fp);
|
| 66 |
extern int readambval(AMBVAL *av, FILE *fp);
|
| 67 |
extern int ambvalOK(AMBVAL *av);
|
| 68 |
|
| 69 |
#ifdef __cplusplus
|
| 70 |
}
|
| 71 |
#endif
|
| 72 |
#endif /* _RAD_AMBIENT_H_ */
|
| 73 |
|
