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greg |
2.1 |
#ifndef lint
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static const char RCSid[] = "$Id$";
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#endif
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/*
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* renderopts.c - process common rendering options
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*
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* External symbols declared in ray.h
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*/
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greg |
2.2 |
#include "copyright.h"
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greg |
2.1 |
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#include "ray.h"
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int
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getrenderopt(ac, av) /* get next render option */
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int ac;
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char *av[];
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{
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#define check(ol,al) if (av[0][ol] || \
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badarg(ac-1,av+1,al)) \
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return(-1)
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#define bool(olen,var) switch (av[0][olen]) { \
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case '\0': var = !var; break; \
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case 'y': case 'Y': case 't': case 'T': \
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case '+': case '1': var = 1; break; \
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case 'n': case 'N': case 'f': case 'F': \
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case '-': case '0': var = 0; break; \
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default: return(-1); }
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static char **amblp; /* pointer to build ambient list */
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int rval;
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/* is it even an option? */
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if (ac < 1 || av[0] == NULL || av[0][0] != '-')
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return(-1);
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/* check if it's one we know */
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switch (av[0][1]) {
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case 'b': /* back face vis. */
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if (av[0][2] == 'v') {
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bool(3,backvis);
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return(0);
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}
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break;
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case 'd': /* direct */
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switch (av[0][2]) {
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case 't': /* threshold */
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check(3,"f");
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shadthresh = atof(av[1]);
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return(1);
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case 'c': /* certainty */
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check(3,"f");
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shadcert = atof(av[1]);
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return(1);
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case 'j': /* jitter */
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check(3,"f");
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dstrsrc = atof(av[1]);
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return(1);
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case 'r': /* relays */
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check(3,"i");
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directrelay = atoi(av[1]);
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return(1);
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case 'p': /* pretest */
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check(3,"i");
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vspretest = atoi(av[1]);
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return(1);
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case 'v': /* visibility */
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bool(3,directvis);
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return(0);
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case 's': /* size */
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check(3,"f");
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srcsizerat = atof(av[1]);
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return(1);
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}
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break;
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case 's': /* specular */
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switch (av[0][2]) {
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case 't': /* threshold */
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check(3,"f");
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specthresh = atof(av[1]);
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return(1);
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case 'j': /* jitter */
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check(3,"f");
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specjitter = atof(av[1]);
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return(1);
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}
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break;
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case 'l': /* limit */
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switch (av[0][2]) {
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case 'r': /* recursion */
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check(3,"i");
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maxdepth = atoi(av[1]);
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return(1);
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case 'w': /* weight */
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check(3,"f");
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minweight = atof(av[1]);
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return(1);
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}
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break;
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case 'i': /* irradiance */
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bool(2,do_irrad);
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return(0);
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case 'a': /* ambient */
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switch (av[0][2]) {
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case 'v': /* value */
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check(3,"fff");
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setcolor(ambval, atof(av[1]),
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atof(av[2]),
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atof(av[3]));
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return(3);
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case 'w': /* weight */
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check(3,"i");
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ambvwt = atoi(av[1]);
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return(1);
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case 'a': /* accuracy */
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check(3,"f");
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ambacc = atof(av[1]);
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return(1);
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case 'r': /* resolution */
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check(3,"i");
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ambres = atoi(av[1]);
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return(1);
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case 'd': /* divisions */
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check(3,"i");
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ambdiv = atoi(av[1]);
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return(1);
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case 's': /* super-samp */
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check(3,"i");
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ambssamp = atoi(av[1]);
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return(1);
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case 'b': /* bounces */
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check(3,"i");
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ambounce = atoi(av[1]);
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return(1);
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case 'i': /* include */
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case 'I':
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check(3,"s");
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if (ambincl != 1) {
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ambincl = 1;
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amblp = amblist;
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}
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if (av[0][2] == 'I') { /* file */
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rval = wordfile(amblp,
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getpath(av[1],getlibpath(),R_OK));
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if (rval < 0) {
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sprintf(errmsg,
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"cannot open ambient include file \"%s\"", av[0]);
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error(SYSTEM, errmsg);
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}
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amblp += rval;
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} else {
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*amblp++ = av[1];
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*amblp = NULL;
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}
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return(1);
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case 'e': /* exclude */
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case 'E':
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check(3,"s");
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if (ambincl != 0) {
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ambincl = 0;
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amblp = amblist;
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}
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if (av[0][2] == 'E') { /* file */
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rval = wordfile(amblp,
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getpath(av[1],getlibpath(),R_OK));
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if (rval < 0) {
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sprintf(errmsg,
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"cannot open ambient exclude file \"%s\"", av[0]);
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error(SYSTEM, errmsg);
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}
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amblp += rval;
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} else {
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*amblp++ = av[1];
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*amblp = NULL;
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}
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return(1);
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case 'f': /* file */
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check(3,"s");
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ambfile= av[1];
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return(1);
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}
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break;
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case 'm': /* medium */
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switch (av[0][2]) {
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case 'e': /* extinction */
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check(3,"fff");
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setcolor(cextinction, atof(av[1]),
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atof(av[2]),
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atof(av[3]));
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return(3);
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case 'a': /* albedo */
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check(3,"fff");
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setcolor(salbedo, atof(av[1]),
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atof(av[2]),
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atof(av[3]));
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return(3);
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case 'g': /* eccentr. */
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check(3,"f");
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seccg = atof(av[1]);
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return(1);
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case 's': /* sampling */
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check(3,"f");
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ssampdist = atof(av[1]);
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return(1);
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}
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break;
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}
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return(-1); /* unknown option */
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#undef check
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#undef bool
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}
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void
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print_rdefaults() /* print default render values to stdout */
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{
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register char *cp;
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printf(do_irrad ? "-i+\t\t\t\t# irradiance calculation on\n" :
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"-i-\t\t\t\t# irradiance calculation off\n");
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printf(backvis ? "-bv+\t\t\t\t# back face visibility on\n" :
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"-bv-\t\t\t\t# back face visibility off\n");
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printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
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printf("-dc %f\t\t\t# direct certainty\n", shadcert);
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printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
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printf("-ds %f\t\t\t# direct sampling\n", srcsizerat);
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printf("-dr %-9d\t\t\t# direct relays\n", directrelay);
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printf("-dp %-9d\t\t\t# direct pretest density\n", vspretest);
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printf(directvis ? "-dv+\t\t\t\t# direct visibility on\n" :
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"-dv-\t\t\t\t# direct visibility off\n");
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printf("-sj %f\t\t\t# specular jitter\n", specjitter);
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printf("-st %f\t\t\t# specular threshold\n", specthresh);
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printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
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colval(ambval,GRN), colval(ambval, BLU));
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printf("-aw %-9d\t\t\t# ambient value weight\n", ambvwt);
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printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
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printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
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printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
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printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
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printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
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printf("-me %.2e %.2e %.2e\t# mist extinction coefficient\n",
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colval(cextinction,RED),
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colval(cextinction,GRN),
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colval(cextinction,BLU));
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printf("-ma %f %f %f\t# mist scattering albedo\n", colval(salbedo,RED),
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colval(salbedo,GRN), colval(salbedo,BLU));
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printf("-mg %f\t\t\t# mist scattering eccentricity\n", seccg);
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printf("-ms %f\t\t\t# mist sampling distance\n", ssampdist);
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printf("-lr %-9d\t\t\t# limit reflection\n", maxdepth);
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printf("-lw %f\t\t\t# limit weight\n", minweight);
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}
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