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/* Copyright (c) 1991 Regents of the University of California */ |
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/* SCCSid "$SunId$ LBL" */ |
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/* RCSid: $Id$ */ |
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/* |
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* Common definitions for mkillum |
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*/ |
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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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#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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/* XXX need to add per-band data */ |
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struct BSDF_data { |
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double om_scale; /* maximum solid angle (sr/256) */ |
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int ninc; /* number of incoming directions */ |
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int32 *inc_dir; /* incoming direction codes */ |
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BYTE *inc_rad; /* incoming radians to neighbor */ |
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int nout; /* number of outgoing directions */ |
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int32 *out_dir; /* outgoing direction codes */ |
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BYTE *out_rad; /* outgoing radians to neighbor */ |
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float *bsdf; /* scattering distribution data */ |
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}; /* bidirectional scattering distrib. func. */ |
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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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int pd[3]; /* 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) decodedir(v, (b)->inc_dir[i]) |
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#define getBSDF_outvec(v,b,o) decodedir(v, (b)->out_dir[o]) |
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#define getBSDF_incrad(b,i) ((b)->om_scale*((b)->inc_rad[i] + .5)); |
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#define getBSDF_outrad(b,o) ((b)->om_scale*((b)->out_rad[o] + .5)); |
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#define BSDF_data(b,i,o) (b)->bsdf[(o)*(b)->ninc + (i)] |
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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 void r_BSDF_incvec(FVECT v, struct BSDF_data *b, int i, |
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double rv, MAT4 xm); |
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extern void 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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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 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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