| 1 |
/* RCSid: $Id: mkillum.h,v 2.12 2007/11/05 23:40:26 greg Exp $ */ |
| 2 |
/* |
| 3 |
* Common definitions for mkillum |
| 4 |
*/ |
| 5 |
#ifndef _RAD_MKILLUM_H_ |
| 6 |
#define _RAD_MKILLUM_H_ |
| 7 |
|
| 8 |
#include "ray.h" |
| 9 |
#include "otypes.h" |
| 10 |
|
| 11 |
#ifdef __cplusplus |
| 12 |
extern "C" { |
| 13 |
#endif |
| 14 |
/* illum flags */ |
| 15 |
#define IL_LIGHT 0x1 /* light rather than illum */ |
| 16 |
#define IL_COLDST 0x2 /* use color distribution */ |
| 17 |
#define IL_COLAVG 0x4 /* use average color */ |
| 18 |
#define IL_DATCLB 0x8 /* OK to clobber data file */ |
| 19 |
|
| 20 |
/* up directions */ |
| 21 |
typedef enum { |
| 22 |
UDzneg=-3, |
| 23 |
UDyneg=-2, |
| 24 |
UDxneg=-1, |
| 25 |
UDunknown=0, |
| 26 |
UDxpos=1, |
| 27 |
UDypos=2, |
| 28 |
UDzpos=3 |
| 29 |
} UpDir; |
| 30 |
/* BSDF coordinate calculation routines */ |
| 31 |
/* vectors always point away from surface */ |
| 32 |
typedef int b_vecf(FVECT, int, char *); |
| 33 |
typedef int b_ndxf(FVECT, char *); |
| 34 |
typedef double b_radf(int, char *); |
| 35 |
|
| 36 |
/* Bidirectional Scattering Distribution Function */ |
| 37 |
struct BSDF_data { |
| 38 |
int ninc; /* number of incoming directions */ |
| 39 |
int nout; /* number of outgoing directions */ |
| 40 |
char ib_priv[32]; /* input basis private data */ |
| 41 |
b_vecf *ib_vec; /* get input vector from index */ |
| 42 |
b_ndxf *ib_ndx; /* get input index from vector */ |
| 43 |
b_radf *ib_rad; /* get input radius for index */ |
| 44 |
char ob_priv[32]; /* output basis private data */ |
| 45 |
b_vecf *ob_vec; /* get output vector from index */ |
| 46 |
b_ndxf *ob_ndx; /* get output index from vector */ |
| 47 |
b_radf *ob_rad; /* get output radius for index */ |
| 48 |
float *bsdf; /* scattering distribution data */ |
| 49 |
}; /* bidirectional scattering distrib. func. */ |
| 50 |
|
| 51 |
struct illum_args { |
| 52 |
int flags; /* flags from list above */ |
| 53 |
UpDir udir; /* up direction */ |
| 54 |
double thick; /* object thickness */ |
| 55 |
char matname[MAXSTR]; /* illum material name */ |
| 56 |
char datafile[MAXSTR]; /* distribution data file name */ |
| 57 |
int dfnum; /* data file number */ |
| 58 |
char altmat[MAXSTR]; /* alternate material name */ |
| 59 |
int sampdens; /* point sample density */ |
| 60 |
int nsamps; /* # of samples in each direction */ |
| 61 |
struct BSDF_data |
| 62 |
*sd; /* scattering data (if set) */ |
| 63 |
float minbrt; /* minimum average brightness */ |
| 64 |
COLOR col; /* computed average color */ |
| 65 |
}; /* illum options */ |
| 66 |
|
| 67 |
#define getBSDF_incvec(v,b,i) (*(b)->ib_vec)(v,i,(b)->ib_priv) |
| 68 |
#define getBSDF_incndx(b,v) (*(b)->ib_ndx)(v,(b)->ib_priv) |
| 69 |
#define getBSDF_incrad(b,i) (*(b)->ib_rad)(i,(b)->ib_priv) |
| 70 |
#define getBSDF_outvec(v,b,o) (*(b)->ob_vec)(v,o,(b)->ob_priv) |
| 71 |
#define getBSDF_outndx(b,v) (*(b)->ob_ndx)(v,(b)->ob_priv) |
| 72 |
#define getBSDF_outrad(b,o) (*(b)->ob_rad)(o,(b)->ob_priv) |
| 73 |
#define BSDF_visible(b,i,o) (b)->bsdf[(o)*(b)->ninc + (i)] |
| 74 |
|
| 75 |
extern struct BSDF_data *load_BSDF(char *fname); |
| 76 |
extern void free_BSDF(struct BSDF_data *b); |
| 77 |
extern void r_BSDF_incvec(FVECT v, struct BSDF_data *b, int i, |
| 78 |
double rv, MAT4 xm); |
| 79 |
extern void r_BSDF_outvec(FVECT v, struct BSDF_data *b, int o, |
| 80 |
double rv, MAT4 xm); |
| 81 |
extern int getBSDF_xfm(MAT4 xm, FVECT nrm, UpDir ud); |
| 82 |
extern void redistribute(struct BSDF_data *b, int nalt, int nazi, |
| 83 |
FVECT u, FVECT v, FVECT w, MAT4 xm); |
| 84 |
|
| 85 |
extern void printobj(char *mod, OBJREC *obj); |
| 86 |
extern int average(struct illum_args *il, COLORV *da, int n); |
| 87 |
extern void flatout(struct illum_args *il, COLORV *da, int n, int m, |
| 88 |
FVECT u, FVECT v, FVECT w); |
| 89 |
extern void illumout(struct illum_args *il, OBJREC *ob); |
| 90 |
extern void roundout(struct illum_args *il, COLORV *da, int n, int m); |
| 91 |
|
| 92 |
extern void newdist(int siz); |
| 93 |
extern int process_ray(RAY *r, int rv); |
| 94 |
extern void raysamp(int ndx, FVECT org, FVECT dir); |
| 95 |
extern void rayclean(void); |
| 96 |
|
| 97 |
extern void flatdir(FVECT dv, double alt, double azi); |
| 98 |
|
| 99 |
extern int my_default(OBJREC *, struct illum_args *, char *); |
| 100 |
extern int my_face(OBJREC *, struct illum_args *, char *); |
| 101 |
extern int my_sphere(OBJREC *, struct illum_args *, char *); |
| 102 |
extern int my_ring(OBJREC *, struct illum_args *, char *); |
| 103 |
|
| 104 |
extern COLORV * distarr; /* distribution array */ |
| 105 |
extern int distsiz; |
| 106 |
|
| 107 |
extern char *progname; |
| 108 |
|
| 109 |
#ifdef __cplusplus |
| 110 |
} |
| 111 |
#endif |
| 112 |
|
| 113 |
#endif /* _RAD_MKILLUM_H_ */ |
| 114 |
|
