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#include "view.h" |
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#define MAXINP 32 /* maximum number of input files */ |
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#define WINSIZ 9 /* scanline window size */ |
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#define MIDSCN 4 /* current scan position */ |
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#define WINSIZ 17 /* scanline window size */ |
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#define MIDSCN ((WINSIZ-1)/2+1) |
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struct { |
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char *name; /* file or command name */ |
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FILE *fp; /* stream pointer */ |
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VIEW vw; /* view for picture */ |
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RESOLU rs; /* image resolution and orientation */ |
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float pa; /* pixel aspect ratio */ |
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COLOR *scan[WINSIZ]; /* input scanline window */ |
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COLOR coef; /* coefficient */ |
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COLOR expos; /* recorded exposure */ |
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int nfiles; /* number of input files */ |
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|
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char ourfmt[LPICFMT+1] = PICFMT; /* input picture format */ |
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|
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char Command[] = "<Command>"; |
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char vcolin[3][4] = {"ri", "gi", "bi"}; |
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char vcolout[3][4] = {"ro", "go", "bo"}; |
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char vbrtout[] = "lo"; |
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char vcolexp[3][4] = {"re", "ge", "be"}; |
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char vbrtexp[] = "le"; |
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char vpixaspect[] = "pa"; |
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|
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char vray[6][4] = {"Ox", "Oy", "Oz", "Dx", "Dy", "Dz"}; |
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char vray[7][4] = {"Ox", "Oy", "Oz", "Dx", "Dy", "Dz", "T"}; |
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|
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char vpsize[] = "S"; |
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|
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char vnfiles[] = "nfiles"; |
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char vwhteff[] = "WE"; |
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char vxmax[] = "xmax"; |
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char vymax[] = "ymax"; |
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char vxres[] = "xres"; |
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} |
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break; |
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} |
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newheader("RADIANCE", stdout); /* start header */ |
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/* process files */ |
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for (nfiles = 0; nfiles < MAXINP; nfiles++) { |
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setcolor(input[nfiles].coef, 1.0, 1.0, 1.0); |
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setcolor(input[nfiles].expos, 1.0, 1.0, 1.0); |
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copystruct(&input[nfiles].vw, &stdview); |
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input[nfiles].pa = 1.0; |
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} |
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nfiles = 0; |
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original = 0; |
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} |
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/* complete header */ |
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printargs(argc, argv, stdout); |
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fputformat(COLRFMT, stdout); |
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if (strcmp(ourfmt, PICFMT)) |
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fputformat(ourfmt, stdout); /* print format if known */ |
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putchar('\n'); |
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fprtresolu(xres, yres, stdout); |
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/* combine pictures */ |
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double d; |
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COLOR ctmp; |
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if (isformat(s)) { /* check format */ |
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formatval(fmt, s); |
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wrongformat = strcmp(fmt, COLRFMT); |
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if (isheadid(s)) /* header id */ |
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return; /* don't echo */ |
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if (formatval(fmt, s)) { /* check format */ |
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if (globmatch(ourfmt, fmt)) { |
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wrongformat = 0; |
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strcpy(ourfmt, fmt); |
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} else |
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wrongformat = 1; |
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return; /* don't echo */ |
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} |
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if (isexpos(s)) { /* exposure */ |
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d = exposval(s); |
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} else if (iscolcor(s)) { /* color correction */ |
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colcorval(ctmp, s); |
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multcolor(input[nfiles].expos, ctmp); |
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} else if (isview(s) && sscanview(&input[nfiles].vw, s) > 0) |
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} else if (isaspect(s)) |
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input[nfiles].pa *= aspectval(s); |
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else if (isview(s) && sscanview(&input[nfiles].vw, s) > 0) |
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gotview++; |
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/* echo line */ |
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putchar('\t'); |
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} |
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|
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double |
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rgb_bright(clr) |
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COLOR clr; |
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{ |
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return(bright(clr)); |
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} |
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|
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|
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double |
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xyz_bright(clr) |
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COLOR clr; |
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{ |
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return(clr[CIEY]); |
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} |
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|
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|
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double (*ourbright)() = rgb_bright; |
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|
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|
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init() /* perform final setup */ |
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{ |
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double l_colin(), l_expos(), l_ray(); |
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double l_colin(), l_expos(), l_pixaspect(), l_ray(), l_psize(); |
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register int i; |
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/* define constants */ |
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varset("PI", ':', PI); |
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varset(vnfiles, ':', (double)nfiles); |
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varset(vxmax, ':', (double)xmax); |
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varset(vymax, ':', (double)ymax); |
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} |
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funset(vbrtexp, 1, ':', l_expos); |
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funset(vbrtin, 1, '=', l_colin); |
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for (i = 0; i < 6; i++) |
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funset(vpixaspect, 1, ':', l_pixaspect); |
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for (i = 0; i < 7; i++) |
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funset(vray[i], 1, '=', l_ray); |
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funset(vpsize, 1, '=', l_psize); |
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/* set brightness function */ |
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if (!strcmp(ourfmt, CIEFMT)) { |
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varset(vwhteff, ':', 1.0); |
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ourbright = xyz_bright; |
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} else |
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varset(vwhteff, ':', WHTEFFICACY); |
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} |
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if (fn < 0 || fn >= nfiles) |
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return(1.0); |
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if (nam == vbrtexp) |
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return(bright(input[fn].expos)); |
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return((*ourbright)(input[fn].expos)); |
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n = 3; |
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while (n--) |
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if (nam == vcolexp[n]) |
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|
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|
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double |
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l_pixaspect() /* return pixel aspect ratio */ |
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{ |
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register int fn; |
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|
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fn = argument(1) - .5; |
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if (fn < 0 || fn >= nfiles) |
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return(1.0); |
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return(input[fn].pa); |
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} |
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|
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|
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double |
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l_colin(nam) /* return color value for picture */ |
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register char *nam; |
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{ |
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register int n, xoff, yoff; |
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double d; |
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d = argument(1); |
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if (d > -.5 && d < .5) |
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return((double)nfiles); |
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fn = d - .5; |
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fn = argument(1) - .5; |
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if (fn < 0 || fn >= nfiles) { |
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errno = EDOM; |
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return(0.0); |
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} |
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} |
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if (nam == vbrtin) |
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return(bright(input[fn].scan[MIDSCN+yoff][xscan+xoff])); |
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return((*ourbright)(input[fn].scan[MIDSCN+yoff][xscan+xoff])); |
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n = 3; |
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while (n--) |
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if (nam == vcolin[n]) |
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l_ray(nam) /* return ray origin or direction */ |
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register char *nam; |
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{ |
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static long ltick[MAXINP]; |
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static unsigned long ltick[MAXINP]; |
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static FVECT lorg[MAXINP], ldir[MAXINP]; |
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static double ldist[MAXINP]; |
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FLOAT loc[2]; |
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double d; |
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int fn; |
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register int i; |
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|
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d = argument(1); |
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if (d > -.5 && d < .5) |
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return((double)nfiles); |
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fn = d - .5; |
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fn = argument(1) - .5; |
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if (fn < 0 || fn >= nfiles) { |
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errno = EDOM; |
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return(0.0); |
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errno = EDOM; |
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else { |
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pix2loc(loc, &input[fn].rs, xscan, ymax-1-yscan); |
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if (viewray(lorg[fn], ldir[fn], |
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&input[fn].vw, loc[0], loc[1]) < 0) |
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errno = ERANGE; |
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ldist[fn] = viewray(lorg[fn], ldir[fn], |
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&input[fn].vw, loc[0], loc[1]); |
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} |
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ltick[fn] = eclock; |
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} |
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i = 6; |
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if (nam == vray[i=6]) |
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return(ldist[fn]); |
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while (i--) |
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if (nam == vray[i]) |
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return(i < 3 ? lorg[fn][i] : ldir[fn][i-3]); |
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eputs("Bad call to l_ray()!\n"); |
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quit(1); |
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} |
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|
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|
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double |
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l_psize() /* compute pixel size in steradians */ |
558 |
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{ |
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static unsigned long ltick[MAXINP]; |
560 |
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static double psize[MAXINP]; |
561 |
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FVECT dir0, org, dirx, diry; |
562 |
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FLOAT locx[2], locy[2]; |
563 |
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double d; |
564 |
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int fn; |
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register int i; |
566 |
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|
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d = argument(1); |
568 |
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if (d < .5 || d >= nfiles+.5) { |
569 |
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errno = EDOM; |
570 |
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return(0.0); |
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} |
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fn = d - .5; |
573 |
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if (ltick[fn] < eclock) { /* need to compute? */ |
574 |
+ |
psize[fn] = 0.0; |
575 |
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if (input[fn].vw.type == 0) |
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errno = EDOM; |
577 |
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else if (input[fn].vw.type != VT_PAR && |
578 |
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funvalue(vray[6], 1, &d) >= 0) { |
579 |
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for (i = 0; i < 3; i++) |
580 |
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dir0[i] = funvalue(vray[3+i], 1, &d); |
581 |
+ |
pix2loc(locx, &input[fn].rs, xscan+1, ymax-1-yscan); |
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pix2loc(locy, &input[fn].rs, xscan, ymax-yscan); |
583 |
+ |
if (viewray(org, dirx, &input[fn].vw, |
584 |
+ |
locx[0], locx[1]) >= 0 && |
585 |
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viewray(org, diry, &input[fn].vw, |
586 |
+ |
locy[0], locy[1]) >= 0) { |
587 |
+ |
/* approximate solid angle */ |
588 |
+ |
for (i = 0; i < 3; i++) { |
589 |
+ |
dirx[i] -= dir0[i]; |
590 |
+ |
diry[i] -= dir0[i]; |
591 |
+ |
} |
592 |
+ |
fcross(dir0, dirx, diry); |
593 |
+ |
psize[fn] = 0.5 * sqrt(DOT(dir0,dir0)); |
594 |
+ |
} |
595 |
+ |
} |
596 |
+ |
ltick[fn] = eclock; |
597 |
+ |
} |
598 |
+ |
return(psize[fn]); |
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} |
600 |
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|
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