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#ifndef lint
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static const char RCSid[] = "$Id$";
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#endif
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/*
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* Routines to print mkillum objects
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*/
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#include "mkillum.h"
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#define brt(col) (.263*(col)[0]+.655*(col)[1]+.082*(col)[2])
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char DATORD[] = "RGB"; /* data ordering */
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char DATSUF[] = ".dat"; /* data file suffix */
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char DSTSUF[] = ".dist"; /* distribution suffix */
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char FNCFNM[] = "illum.cal"; /* function file name */
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printobj(mod, obj) /* print out an object */
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char *mod;
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register OBJREC *obj;
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{
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register int i;
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if (issurface(obj->otype) && !strcmp(mod, VOIDID))
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return; /* don't print void surfaces */
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printf("\n%s %s %s", mod, ofun[obj->otype].funame, obj->oname);
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printf("\n%d", obj->oargs.nsargs);
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for (i = 0; i < obj->oargs.nsargs; i++)
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printf(" %s", obj->oargs.sarg[i]);
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#ifdef IARGS
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printf("\n%d", obj->oargs.niargs);
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for (i = 0; i < obj->oargs.niargs; i++)
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printf(" %d", obj->oargs.iarg[i]);
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#else
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printf("\n0");
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#endif
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printf("\n%d", obj->oargs.nfargs);
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for (i = 0; i < obj->oargs.nfargs; i++) {
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if (i%3 == 0)
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putchar('\n');
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printf(" %18.12g", obj->oargs.farg[i]);
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}
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putchar('\n');
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}
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char *
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dfname(il, c) /* return data file name */
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struct illum_args *il;
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int c;
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{
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extern char *getpath(), *strcpy();
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char fname[MAXSTR];
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register char *s;
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s = strcpy(fname, il->datafile);
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s += strlen(s);
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if (c) *s++ = c;
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if (il->dfnum > 0) {
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sprintf(s, "%d", il->dfnum);
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s += strlen(s);
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}
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strcpy(s, DATSUF);
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return(getpath(fname, NULL, 0));
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}
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FILE *
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dfopen(il, c) /* open data file */
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register struct illum_args *il;
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int c;
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{
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char *fn;
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FILE *fp;
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/* get a usable file name */
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for (fn = dfname(il, c);
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!(il->flags & IL_DATCLB) && access(fn, F_OK) == 0;
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fn = dfname(il, c))
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il->dfnum++;
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/* open it for writing */
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if ((fp = fopen(fn, "w")) == NULL) {
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sprintf(errmsg, "cannot open data file \"%s\"", fn);
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error(SYSTEM, errmsg);
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}
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return(fp);
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}
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flatout(il, da, n, m, u, v, w) /* write hemispherical distribution */
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struct illum_args *il;
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float *da;
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int n, m;
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FVECT u, v, w;
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{
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float *Ninv;
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FILE *dfp;
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int i;
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if ((Ninv = (float *)malloc(3*m*sizeof(float))) == NULL)
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error(SYSTEM, "out of memory in flatout");
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compinv(Ninv, da, m);
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if (il->flags & IL_COLDST) {
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printf("\n%s %s %s%s", VOIDID, ofun[PAT_CDATA].funame,
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il->matname, DSTSUF);
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printf("\n9 red green blue");
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for (i = 0; i < 3; i++) {
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dfp = dfopen(il, DATORD[i]);
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fprintf(dfp, "2\n%f %f %d\n%f %f %d\n",
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1.+.5/n, .5/n, n+1,
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0., 2.*PI, m+1);
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colorout(i, Ninv, 1, m, 1./il->nsamps/il->col[i], dfp);
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colorout(i, da, n, m, 1./il->nsamps/il->col[i], dfp);
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fputeol(dfp);
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fclose(dfp);
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printf(" %s", dfname(il, DATORD[i]));
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}
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} else {
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printf("\n%s %s %s%s", VOIDID, ofun[PAT_BDATA].funame,
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il->matname, DSTSUF);
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printf("\n5 noneg");
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dfp = dfopen(il, 0);
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fprintf(dfp, "2\n%f %f %d\n%f %f %d\n",
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1.+.5/n, .5/n, n+1,
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0., 2.*PI, m+1);
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brightout(Ninv, 1, m, 1./il->nsamps/brt(il->col), dfp);
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brightout(da, n, m, 1./il->nsamps/brt(il->col), dfp);
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fputeol(dfp);
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fclose(dfp);
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printf(" %s", dfname(il, 0));
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}
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printf("\n\t%s il_alth il_azih", FNCFNM);
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printf("\n0\n9\n");
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printf("\t%f\t%f\t%f\n", u[0], u[1], u[2]);
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printf("\t%f\t%f\t%f\n", v[0], v[1], v[2]);
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printf("\t%f\t%f\t%f\n", w[0], w[1], w[2]);
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il->dfnum++;
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free((void *)Ninv);
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}
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roundout(il, da, n, m) /* write spherical distribution */
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struct illum_args *il;
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float *da;
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int n, m;
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{
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float *Ninv, *Sinv;
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FILE *dfp;
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int i;
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if ((Ninv = (float *)malloc(3*m*sizeof(float))) == NULL ||
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(Sinv = (float *)malloc(3*m*sizeof(float))) == NULL)
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error(SYSTEM, "out of memory in roundout");
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compinv(Ninv, da, m);
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compinv(Sinv, da+3*m*(n-1), m);
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if (il->flags & IL_COLDST) {
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printf("\n%s %s %s%s", VOIDID, ofun[PAT_CDATA].funame,
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il->matname, DSTSUF);
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printf("\n9 red green blue");
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for (i = 0; i < 3; i++) {
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dfp = dfopen(il, DATORD[i]);
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fprintf(dfp, "2\n%f %f %d\n%f %f %d\n",
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1.+1./n, -1.-1./n, n+2,
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0., 2.*PI, m+1);
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colorout(i, Ninv, 1, m, 1./il->nsamps/il->col[i], dfp);
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colorout(i, da, n, m, 1./il->nsamps/il->col[i], dfp);
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colorout(i, Sinv, 1, m, 1./il->nsamps/il->col[i], dfp);
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fputeol(dfp);
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fclose(dfp);
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printf(" %s", dfname(il, DATORD[i]));
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}
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} else {
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printf("\n%s %s %s%s", VOIDID, ofun[PAT_BDATA].funame,
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il->matname, DSTSUF);
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printf("\n5 noneg");
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dfp = dfopen(il, 0);
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fprintf(dfp, "2\n%f %f %d\n%f %f %d\n",
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1.+1./n, -1.-1./n, n+2,
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0., 2.*PI, m+1);
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brightout(Ninv, 1, m, 1./il->nsamps/brt(il->col), dfp);
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brightout(da, n, m, 1./il->nsamps/brt(il->col), dfp);
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brightout(Sinv, 1, m, 1./il->nsamps/brt(il->col), dfp);
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fputeol(dfp);
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fclose(dfp);
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printf(" %s", dfname(il, 0));
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}
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printf("\n\t%s il_alt il_azi", FNCFNM);
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printf("\n0\n0\n");
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il->dfnum++;
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free((void *)Ninv);
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free((void *)Sinv);
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}
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illumout(il, ob) /* print illum object */
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register struct illum_args *il;
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OBJREC *ob;
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{
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double cout[3];
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if (il->sampdens <= 0)
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printf("\n%s ", VOIDID);
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else
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printf("\n%s%s ", il->matname, DSTSUF);
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printf("%s %s", ofun[il->flags&IL_LIGHT?MAT_LIGHT:MAT_ILLUM].funame,
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il->matname);
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if (il->flags & IL_LIGHT || !strcmp(il->altmat,VOIDID))
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printf("\n0");
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else
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printf("\n1 %s", il->altmat);
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if (il->flags & IL_COLAVG) {
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cout[0] = il->col[0];
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cout[1] = il->col[1];
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cout[2] = il->col[2];
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} else {
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cout[0] = cout[1] = cout[2] = brt(il->col);
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}
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printf("\n0\n3 %f %f %f\n", cout[0], cout[1], cout[2]);
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printobj(il->matname, ob);
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}
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compavg(col, da, n) /* compute average for set of data values */
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float col[3];
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register float *da;
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int n;
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{
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register int i;
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col[0] = col[1] = col[2] = 0.;
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i = n;
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while (i-- > 0) {
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col[0] += *da++;
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col[1] += *da++;
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col[2] += *da++;
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}
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for (i = 0; i < 3; i++)
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col[i] /= (double)n;
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}
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compinv(rinv, rp, m) /* compute other side of row average */
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register float *rinv, *rp;
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int m;
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{
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float avg[3];
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compavg(avg, rp, m); /* row average */
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while (m-- > 0) {
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*rinv++ = 2.*avg[0] - *rp++;
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*rinv++ = 2.*avg[1] - *rp++;
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*rinv++ = 2.*avg[2] - *rp++;
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}
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}
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average(il, da, n) /* evaluate average value for distribution */
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register struct illum_args *il;
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float *da;
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int n;
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{
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compavg(il->col, da, n); /* average */
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if (il->nsamps > 1) {
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il->col[0] /= (double)il->nsamps;
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il->col[1] /= (double)il->nsamps;
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il->col[2] /= (double)il->nsamps;
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}
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/* brighter than minimum? */
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return(brt(il->col) > il->minbrt+FTINY);
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}
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static int colmcnt = 0; /* count of columns written */
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fputnum(d, fp) /* put out a number to fp */
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double d;
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FILE *fp;
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{
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if (colmcnt++ % 5 == 0)
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putc('\n', fp);
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fprintf(fp, " %11e", d);
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}
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fputeol(fp) /* write end of line to fp */
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register FILE *fp;
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{
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putc('\n', fp);
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colmcnt = 0;
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}
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colorout(p, da, n, m, mult, fp) /* put out color distribution data */
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int p;
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register float *da;
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int n, m;
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double mult;
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FILE *fp;
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{
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register int i, j;
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for (i = 0; i < n; i++) {
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for (j = 0; j < m; j++) {
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fputnum(mult*da[p], fp);
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da += 3;
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}
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fputnum(mult*da[p-3*m], fp); /* wrap phi */
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}
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}
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brightout(da, n, m, mult, fp) /* put out brightness distribution data */
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register float *da;
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int n, m;
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double mult;
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FILE *fp;
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{
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register int i, j;
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for (i = 0; i < n; i++) {
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for (j = 0; j < m; j++) {
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fputnum(mult*brt(da), fp);
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da += 3;
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}
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fputnum(mult*brt(da-3*m), fp); /* wrap phi */
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}
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}
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