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rcontrib.h
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Thu, Aug 1, 08:11

rcontrib.h
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/* RCSid $Id: rcontrib.h,v 2.17 2021/02/16 20:06:06 greg Exp $ */
/*
* Header file for rcontrib modules
*/
#include "platform.h"
#include "paths.h"
#include "rtprocess.h"
#include "ray.h"
#include "func.h"
#include "lookup.h"
extern int gargc; /* global argc */
extern char **gargv; /* global argv */
extern char *octname; /* global octree name */
extern int nproc; /* number of processes requested */
extern int nchild; /* number of children (-1 in child) */
extern int inpfmt; /* input format */
extern int outfmt; /* output format */
extern int header; /* output header? */
extern int force_open; /* truncate existing output? */
extern int recover; /* recover previous output? */
extern int accumulate; /* input rays per output record */
extern int contrib; /* computing contributions? */
extern int xres; /* horizontal (scan) size */
extern int yres; /* vertical resolution */
extern int using_stdout; /* are we using stdout? */
extern int imm_irrad; /* compute immediate irradiance? */
extern int lim_dist; /* limit distance? */
extern int account; /* current accumulation count */
extern RNUMBER raysleft; /* number of rays left to trace */
extern long waitflush; /* how long until next flush */
extern RNUMBER lastray; /* last ray number sent */
extern RNUMBER lastdone; /* last ray processed */
extern int report_intvl; /* reporting interval (seconds) */
typedef double DCOLOR[3]; /* double-precision color */
/*
* The MODCONT structure is used to accumulate ray contributions
* for a particular modifier, which may be subdivided into bins
* if binv evaluates > 0. If outspec contains a %s in it, this will
* be replaced with the modifier name. If outspec contains a %d in it,
* this will be used to create one output file per bin, otherwise all bins
* will be written to the same file, in order. If the global outfmt
* is 'c', then a 4-byte RGBE pixel will be output for each bin value
* and the file will conform to a RADIANCE image if xres & yres are set.
*/
typedef struct {
const char *outspec; /* output file specification */
const char *modname; /* modifier name */
const char *params; /* parameter list */
EPNODE *binv; /* bin value expression */
int bin0; /* starting bin offset */
int nbins; /* number of contribution bins */
DCOLOR cbin[1]; /* contribution bins (extends struct) */
} MODCONT; /* modifier contribution */
extern LUTAB modconttab; /* modifier contribution table */
/*
* The STREAMOUT structure holds an open FILE pointer and a count of
* the number of RGB triplets per record, or 0 if unknown.
*/
typedef struct {
FILE *ofp; /* output file pointer */
int outpipe; /* output is to a pipe */
int reclen; /* triplets/record */
int xr, yr; /* output resolution for picture */
} STREAMOUT;
extern LUTAB ofiletab; /* output stream table */
#ifndef MAXPROCESS
#if defined(_WIN32) || defined(_WIN64)
#define MAXPROCESS 1
#else
#define MAXPROCESS 128
#endif
#endif
extern char **modname; /* ordered modifier name list */
extern int nmods; /* number of modifiers */
extern int modasiz; /* allocated modifier array size */
extern char RCCONTEXT[]; /* special evaluation context */
extern char *formstr(int f); /* return format identifier */
extern void process_rcontrib(void); /* trace ray contributions */
extern STREAMOUT * getostream(const char *ospec, const char *mname,
int bn, int noopen);
extern void mod_output(MODCONT *mp);
extern void end_record(void);
extern MODCONT *addmodifier(char *modn, char *outf,
char *prms, char *binv, int bincnt);
extern void addmodfile(char *fname, char *outf,
char *prms, char *binv, int bincnt);
extern void reload_output(void);
extern void recover_output(void);
extern int getvec(FVECT vec);
extern int in_rchild(void);
extern void end_children(int immed);
extern void put_zero_record(int ndx);
extern int morays(void); /* reached end of input? */
extern void parental_loop(void); /* controlling process */
extern void feeder_loop(void); /* feeder process */
extern void rcontrib(void); /* main calculation loop */

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