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RadiancePmap/renderopts.c
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renderopts.c
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#ifndef lint
static const char RCSid[] = "$Id: renderopts.c,v 2.18 2016/03/21 19:06:08 greg Exp $";
#endif
/*
* renderopts.c - process common rendering options
*
* External symbols declared in ray.h
*/
#include "copyright.h"
#include "ray.h"
#include "paths.h"
#include "pmapopt.h"
int
getrenderopt( /* get next render option */
int ac,
char *av[]
)
{
#define check(ol,al) if (av[0][ol] || \
badarg(ac-1,av+1,al)) \
return(-1)
#define check_bool(olen,var) switch (av[0][olen]) { \
case '\0': var = !var; break; \
case 'y': case 'Y': case 't': case 'T': \
case '+': case '1': var = 1; break; \
case 'n': case 'N': case 'f': case 'F': \
case '-': case '0': var = 0; break; \
default: return(-1); }
static char **amblp; /* pointer to build ambient list */
int rval;
/* is it even an option? */
if (ac < 1 || av[0] == NULL || av[0][0] != '-')
return(-1);
/* check if it's one we know */
switch (av[0][1]) {
case 'u': /* uncorrelated sampling */
check_bool(2,rand_samp);
return(0);
case 'b': /* back face vis. */
if (av[0][2] == 'v') {
check_bool(3,backvis);
return(0);
}
break;
case 'd': /* direct */
switch (av[0][2]) {
case 't': /* threshold */
check(3,"f");
shadthresh = atof(av[1]);
return(1);
case 'c': /* certainty */
check(3,"f");
shadcert = atof(av[1]);
return(1);
case 'j': /* jitter */
check(3,"f");
dstrsrc = atof(av[1]);
return(1);
case 'r': /* relays */
check(3,"i");
directrelay = atoi(av[1]);
return(1);
case 'p': /* pretest */
check(3,"i");
vspretest = atoi(av[1]);
return(1);
case 'v': /* visibility */
check_bool(3,directvis);
return(0);
case 's': /* size */
check(3,"f");
srcsizerat = atof(av[1]);
return(1);
}
break;
case 's': /* specular */
switch (av[0][2]) {
case 't': /* threshold */
check(3,"f");
specthresh = atof(av[1]);
return(1);
case 's': /* sampling */
check(3,"f");
specjitter = atof(av[1]);
return(1);
}
break;
case 'l': /* limit */
switch (av[0][2]) {
case 'r': /* recursion */
check(3,"i");
maxdepth = atoi(av[1]);
return(1);
case 'w': /* weight */
check(3,"f");
minweight = atof(av[1]);
return(1);
}
break;
case 'i': /* irradiance */
check_bool(2,do_irrad);
return(0);
case 'a': /* ambient */
switch (av[0][2]) {
case 'v': /* value */
check(3,"fff");
setcolor(ambval, atof(av[1]),
atof(av[2]),
atof(av[3]));
return(3);
case 'w': /* weight */
check(3,"i");
ambvwt = atoi(av[1]);
return(1);
case 'a': /* accuracy */
check(3,"f");
ambacc = atof(av[1]);
return(1);
case 'r': /* resolution */
check(3,"i");
ambres = atoi(av[1]);
return(1);
case 'd': /* divisions */
check(3,"i");
ambdiv = atoi(av[1]);
return(1);
case 's': /* super-samp */
check(3,"i");
ambssamp = atoi(av[1]);
return(1);
case 'b': /* bounces */
check(3,"i");
ambounce = atoi(av[1]);
return(1);
case 'i': /* include */
case 'I':
check(3,"s");
if (ambincl != 1) {
ambincl = 1;
amblp = amblist;
}
if (av[0][2] == 'I') { /* file */
rval = wordfile(amblp, AMBLLEN-(amblp-amblist),
getpath(av[1],getrlibpath(),R_OK));
if (rval < 0) {
sprintf(errmsg,
"cannot open ambient include file \"%s\"", av[1]);
error(SYSTEM, errmsg);
}
amblp += rval;
} else {
*amblp++ = savqstr(av[1]);
*amblp = NULL;
}
return(1);
case 'e': /* exclude */
case 'E':
check(3,"s");
if (ambincl != 0) {
ambincl = 0;
amblp = amblist;
}
if (av[0][2] == 'E') { /* file */
rval = wordfile(amblp, AMBLLEN-(amblp-amblist),
getpath(av[1],getrlibpath(),R_OK));
if (rval < 0) {
sprintf(errmsg,
"cannot open ambient exclude file \"%s\"", av[1]);
error(SYSTEM, errmsg);
}
amblp += rval;
} else {
*amblp++ = savqstr(av[1]);
*amblp = NULL;
}
return(1);
case 'f': /* file */
check(3,"s");
ambfile = savqstr(av[1]);
return(1);
}
break;
case 'm': /* medium */
switch (av[0][2]) {
case 'e': /* extinction */
check(3,"fff");
setcolor(cextinction, atof(av[1]),
atof(av[2]),
atof(av[3]));
return(3);
case 'a': /* albedo */
check(3,"fff");
setcolor(salbedo, atof(av[1]),
atof(av[2]),
atof(av[3]));
return(3);
case 'g': /* eccentr. */
check(3,"f");
seccg = atof(av[1]);
return(1);
case 's': /* sampling */
check(3,"f");
ssampdist = atof(av[1]);
return(1);
}
break;
}
/* PMAP: Parse photon mapping options */
return(getPmapRenderOpt(ac, av));
/* return(-1); */ /* unknown option */
#undef check
#undef check_bool
}
void
print_rdefaults(void) /* print default render values to stdout */
{
printf(do_irrad ? "-i+\t\t\t\t# irradiance calculation on\n" :
"-i-\t\t\t\t# irradiance calculation off\n");
printf(rand_samp ? "-u+\t\t\t\t# uncorrelated Monte Carlo sampling\n" :
"-u-\t\t\t\t# correlated quasi-Monte Carlo sampling\n");
printf(backvis ? "-bv+\t\t\t\t# back face visibility on\n" :
"-bv-\t\t\t\t# back face visibility off\n");
printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
printf("-dc %f\t\t\t# direct certainty\n", shadcert);
printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
printf("-ds %f\t\t\t# direct sampling\n", srcsizerat);
printf("-dr %-9d\t\t\t# direct relays\n", directrelay);
printf("-dp %-9d\t\t\t# direct pretest density\n", vspretest);
printf(directvis ? "-dv+\t\t\t\t# direct visibility on\n" :
"-dv-\t\t\t\t# direct visibility off\n");
printf("-ss %f\t\t\t# specular sampling\n", specjitter);
printf("-st %f\t\t\t# specular threshold\n", specthresh);
printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
colval(ambval,GRN), colval(ambval, BLU));
printf("-aw %-9d\t\t\t# ambient value weight\n", ambvwt);
printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
printf("-me %.2e %.2e %.2e\t# mist extinction coefficient\n",
colval(cextinction,RED),
colval(cextinction,GRN),
colval(cextinction,BLU));
printf("-ma %f %f %f\t# mist scattering albedo\n", colval(salbedo,RED),
colval(salbedo,GRN), colval(salbedo,BLU));
printf("-mg %f\t\t\t# mist scattering eccentricity\n", seccg);
printf("-ms %f\t\t\t# mist sampling distance\n", ssampdist);
printf("-lr %-9d\t\t\t# limit reflection%s\n", maxdepth,
maxdepth<=0 ? " (Russian roulette)" : "");
printf("-lw %.2e\t\t\t# limit weight\n", minweight);
/* PMAP: output photon map defaults */
printPmapDefaults();
}
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