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greg |
2.16 |
/* RCSid $Id: ambient.h,v 2.15 2005/05/31 18:01:09 greg Exp $ */ |
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greg |
1.1 |
/* |
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* Common definitions for interreflection routines. |
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greg |
2.7 |
* |
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* Include after ray.h |
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*/ |
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schorsch |
2.9 |
#ifndef _RAD_AMBIENT_H_ |
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#define _RAD_AMBIENT_H_ |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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greg |
1.1 |
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/* |
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* Since we've defined our vectors as float below to save space, |
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* watch out for changes in the definitions of VCOPY() and DOT() |
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* and don't pass these vectors to fvect routines. |
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*/ |
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typedef struct ambrec { |
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greg |
2.5 |
unsigned long latick; /* last accessed tick */ |
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greg |
1.1 |
float pos[3]; /* position in space */ |
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float dir[3]; /* normal direction */ |
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greg |
2.14 |
int lvl; /* recursion level of parent ray */ |
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greg |
1.1 |
float weight; /* weight of parent ray */ |
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float rad; /* validity radius */ |
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COLOR val; /* computed ambient value */ |
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float gpos[3]; /* gradient wrt. position */ |
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float gdir[3]; /* gradient wrt. direction */ |
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struct ambrec *next; /* next in list */ |
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} AMBVAL; /* ambient value */ |
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greg |
2.7 |
typedef struct ambtree { |
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AMBVAL *alist; /* ambient value list */ |
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struct ambtree *kid; /* 8 child nodes */ |
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} AMBTREE; /* ambient octree */ |
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typedef struct { |
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greg |
2.15 |
COLOR v; /* division sum (partial) */ |
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greg |
2.7 |
float r; /* 1/distance sum */ |
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float k; /* variance for this division */ |
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int n; /* number of subsamples */ |
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greg |
2.16 |
short t, p; /* theta, phi indices */ |
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greg |
2.7 |
} AMBSAMP; /* ambient sample division */ |
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typedef struct { |
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greg |
2.16 |
FVECT ux, uy, uz; /* x, y and z axis directions */ |
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greg |
2.15 |
COLOR acoef; /* division contribution coefficient */ |
| 47 |
greg |
2.16 |
int ns; /* number of super-samples */ |
| 48 |
greg |
2.7 |
short nt, np; /* number of theta and phi directions */ |
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} AMBHEMI; /* ambient sample hemisphere */ |
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| 51 |
greg |
1.1 |
extern double maxarad; /* maximum ambient radius */ |
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extern double minarad; /* minimum ambient radius */ |
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| 54 |
greg |
2.11 |
#ifndef AVGREFL |
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greg |
1.2 |
#define AVGREFL 0.5 /* assumed average reflectance */ |
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greg |
2.11 |
#endif |
| 57 |
greg |
2.2 |
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#define AMBVALSIZ 75 /* number of bytes in portable AMBVAL struct */ |
| 59 |
greg |
2.4 |
#define AMBMAGIC 557 /* magic number for ambient value files */ |
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greg |
2.3 |
#define AMBFMT "Radiance_ambval" /* format id string */ |
| 61 |
greg |
2.7 |
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| 62 |
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/* defined in ambient.c */ |
| 63 |
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extern void setambres(int ar); |
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extern void setambacc(double newa); |
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extern void setambient(void); |
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greg |
2.12 |
extern void multambient(COLOR aval, RAY *r, FVECT nrm); |
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greg |
2.7 |
extern void ambdone(void); |
| 68 |
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extern void ambnotify(OBJECT obj); |
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greg |
2.15 |
extern double sumambient(COLOR acol, RAY *r, FVECT rn, int al, |
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greg |
2.7 |
AMBTREE *at, FVECT c0, double s); |
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greg |
2.15 |
extern double makeambient(COLOR acol, RAY *r, FVECT rn, int al); |
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greg |
2.7 |
extern void extambient(COLOR cr, AMBVAL *ap, FVECT pv, FVECT nv); |
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extern int ambsync(void); |
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greg |
2.12 |
/* defined in ambcomp.c */ |
| 75 |
greg |
2.15 |
extern double doambient(COLOR acol, RAY *r, double wt, |
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greg |
2.12 |
FVECT pg, FVECT dg); |
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greg |
2.15 |
extern void inithemi(AMBHEMI *hp, COLOR ac, RAY *r, double wt); |
| 78 |
greg |
2.12 |
extern int divsample(AMBSAMP *dp, AMBHEMI *h, RAY *r); |
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extern void comperrs(AMBSAMP *da, AMBHEMI *hp); |
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extern void posgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp); |
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extern void dirgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp); |
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greg |
2.7 |
/* defined in ambio.c */ |
| 83 |
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extern void putambmagic(FILE *fp); |
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extern int hasambmagic(FILE *fp); |
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extern int writambval(AMBVAL *av, FILE *fp); |
| 86 |
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extern int ambvalOK(AMBVAL *av); |
| 87 |
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extern int readambval(AMBVAL *av, FILE *fp); |
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/* defined in lookamb.c */ |
| 89 |
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extern void lookamb(FILE *fp); |
| 90 |
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extern void writamb(FILE *fp); |
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| 92 |
schorsch |
2.9 |
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| 93 |
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#ifdef __cplusplus |
| 94 |
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} |
| 95 |
greg |
2.7 |
#endif |
| 96 |
schorsch |
2.9 |
#endif /* _RAD_AMBIENT_H_ */ |
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