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#ifndef _RAD_MKILLUM_H_ |
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#define _RAD_MKILLUM_H_ |
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#include "standard.h" |
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#include "object.h" |
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#include "ray.h" |
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#include "otypes.h" |
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#include "rtprocess.h" |
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#include "random.h" |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/* illum flags */ |
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#define IL_LIGHT 0x1 /* light rather than illum */ |
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#define IL_COLDST 0x2 /* use color distribution */ |
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#define IL_COLAVG 0x4 /* use average color */ |
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#define IL_DATCLB 0x8 /* OK to clobber data file */ |
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/* up directions */ |
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typedef enum { |
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UDzneg=-3, |
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UDyneg=-2, |
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UDxneg=-1, |
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UDunknown=0, |
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UDxpos=1, |
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UDypos=2, |
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UDzpos=3 |
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} UpDir; |
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/* BSDF coordinate calculation routines */ |
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/* vectors always point away from surface */ |
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typedef int b_vecf(FVECT, int, void *); |
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typedef int b_ndxf(FVECT, void *); |
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typedef double b_radf(int, void *); |
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|
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/* Bidirectional Scattering Distribution Function */ |
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struct BSDF_data { |
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int ninc; /* number of incoming directions */ |
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int nout; /* number of outgoing directions */ |
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void *ib_priv; /* input basis private data */ |
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b_vecf *ib_vec; /* get input vector from index */ |
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b_ndxf *ib_ndx; /* get input index from vector */ |
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b_radf *ib_ohm; /* get input radius for index */ |
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void *ob_priv; /* output basis private data */ |
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b_vecf *ob_vec; /* get output vector from index */ |
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b_ndxf *ob_ndx; /* get output index from vector */ |
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b_radf *ob_ohm; /* get output radius for index */ |
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float *bsdf; /* scattering distribution data */ |
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}; /* bidirectional scattering distrib. func. */ |
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|
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struct illum_args { |
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int flags; /* flags from list above */ |
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UpDir udir; /* up direction */ |
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double thick; /* object thickness */ |
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char matname[MAXSTR]; /* illum material name */ |
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char datafile[MAXSTR]; /* distribution data file name */ |
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int dfnum; /* data file number */ |
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char altmat[MAXSTR]; /* alternate material name */ |
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int sampdens; /* point sample density */ |
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int nsamps; /* # of samples in each direction */ |
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struct BSDF_data |
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*sd; /* scattering data (if set) */ |
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float minbrt; /* minimum average brightness */ |
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float col[3]; /* computed average color */ |
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COLOR col; /* computed average color */ |
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}; /* illum options */ |
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struct rtproc { |
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SUBPROC pd; /* rtrace pipe descriptors */ |
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float *buf; /* rtrace i/o buffer */ |
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int bsiz; /* maximum rays for rtrace buffer */ |
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float **dest; /* destination for each ray result */ |
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int nrays; /* current length of rtrace buffer */ |
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}; /* rtrace process */ |
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#define getBSDF_incvec(v,b,i) (*(b)->ib_vec)(v,i,(b)->ib_priv) |
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#define getBSDF_incndx(b,v) (*(b)->ib_ndx)(v,(b)->ib_priv) |
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#define getBSDF_incohm(b,i) (*(b)->ib_ohm)(i,(b)->ib_priv) |
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#define getBSDF_outvec(v,b,o) (*(b)->ob_vec)(v,o,(b)->ob_priv) |
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#define getBSDF_outndx(b,v) (*(b)->ob_ndx)(v,(b)->ob_priv) |
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#define getBSDF_outohm(b,o) (*(b)->ob_ohm)(o,(b)->ob_priv) |
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#define BSDF_visible(b,i,o) (b)->bsdf[(o)*(b)->ninc + (i)] |
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extern void printobj(char *mod, register OBJREC *obj); |
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extern int average(register struct illum_args *il, float *da, int n); |
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extern void flatout(struct illum_args *il, float *da, int n, int m, |
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FVECT u, FVECT v, FVECT w); |
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extern void illumout(register struct illum_args *il, OBJREC *ob); |
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extern void roundout(struct illum_args *il, float *da, int n, int m); |
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extern struct BSDF_data *load_BSDF(char *fname); |
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extern void free_BSDF(struct BSDF_data *b); |
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extern int r_BSDF_incvec(FVECT v, struct BSDF_data *b, int i, |
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double rv, MAT4 xm); |
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extern int r_BSDF_outvec(FVECT v, struct BSDF_data *b, int o, |
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double rv, MAT4 xm); |
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extern int getBSDF_xfm(MAT4 xm, FVECT nrm, UpDir ud); |
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extern void redistribute(struct BSDF_data *b, int nalt, int nazi, |
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FVECT u, FVECT v, FVECT w, MAT4 xm); |
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extern void printobj(char *mod, OBJREC *obj); |
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extern int average(struct illum_args *il, COLORV *da, int n); |
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extern void flatout(struct illum_args *il, COLORV *da, int n, int m, |
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FVECT u, FVECT v, FVECT w); |
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extern void illumout(struct illum_args *il, OBJREC *ob); |
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extern void roundout(struct illum_args *il, COLORV *da, int n, int m); |
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|
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extern void newdist(int siz); |
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extern int process_ray(RAY *r, int rv); |
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extern void raysamp(int ndx, FVECT org, FVECT dir); |
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extern void rayclean(void); |
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extern void flatdir(FVECT dv, double alt, double azi); |
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extern int my_default(OBJREC *, struct illum_args *, char *); |
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extern int my_face(OBJREC *, struct illum_args *, char *); |
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extern int my_sphere(OBJREC *, struct illum_args *, char *); |
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extern int my_ring(OBJREC *, struct illum_args *, char *); |
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extern COLORV * distarr; /* distribution array */ |
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extern int distsiz; |
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extern char *progname; |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* _RAD_MKILLUM_H_ */ |
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