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#ifndef lint |
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static const char RCSid[] = "$Id: renderopts.c,v 2.3 2003/05/13 17:58:33 greg Exp $"; |
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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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|
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#include "copyright.h" |
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|
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#include "ray.h" |
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|
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|
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extern int |
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getrenderopt( /* get next render option */ |
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int ac, |
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char *av[] |
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) |
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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],getrlibpath(),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],getrlibpath(),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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|
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#undef check |
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#undef bool |
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} |
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|
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|
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extern void |
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print_rdefaults(void) /* print default render values to stdout */ |
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{ |
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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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} |
