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/* Copyright (c) 1991 Regents of the University of California */ |
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|
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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|
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/* |
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* Combine picture files according to calcomp functions. |
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* |
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* 1/4/89 |
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*/ |
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|
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#include <stdio.h> |
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|
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#include <errno.h> |
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|
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#include "color.h" |
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|
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#include "calcomp.h" |
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|
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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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|
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#define BRT (-1) /* special index for brightness */ |
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|
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struct { |
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char *name; /* file name */ |
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FILE *fp; /* stream pointer */ |
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COLOR *scan[WINSIZ]; /* input scanline window */ |
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COLOR coef; /* coefficient */ |
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} input[MAXINP]; /* input pictures */ |
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|
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int nfiles; /* number of input files */ |
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|
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char *vcolin[3] = {"ri", "gi", "bi"}; |
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char *vcolout[3] = {"ro", "go", "bo"}; |
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char vbrtin[] = "li"; |
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char vbrtout[] = "lo"; |
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char *vcolcoef[3] = {"rc", "gc", "bc"}; |
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char vbrtcoef[] = "lc"; |
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|
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#define vnfiles "nfiles" |
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#define vxres "xres" |
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#define vyres "yres" |
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#define vxpos "x" |
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#define vypos "y" |
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|
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int nowarn = 0; /* no warning messages? */ |
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|
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int original = 0; /* origninal values? */ |
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|
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int xres=0, yres=0; /* picture resolution */ |
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|
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int xpos, ypos; /* picture position */ |
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|
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int wrongformat = 0; |
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|
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|
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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{ |
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double f; |
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int a, i; |
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/* scan options */ |
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for (a = 1; a < argc; a++) { |
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if (argv[a][0] == '-') |
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switch (argv[a][1]) { |
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case 'x': |
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xres = atoi(argv[++a]); |
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continue; |
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case 'y': |
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yres = atoi(argv[++a]); |
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continue; |
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case 'w': |
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nowarn = !nowarn; |
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continue; |
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case 'o': |
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original = !original; |
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continue; |
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case 'f': |
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case 'e': |
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continue; |
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} |
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break; |
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} |
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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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nfiles = 0; |
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for ( ; a < argc; a++) { |
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if (nfiles >= MAXINP) { |
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eputs(argv[0]); |
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eputs(": too many picture files\n"); |
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quit(1); |
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} |
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if (argv[a][0] == '-') |
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switch (argv[a][1]) { |
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case '\0': |
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input[nfiles].name = "<stdin>"; |
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input[nfiles].fp = stdin; |
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break; |
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case 's': |
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f = atof(argv[++a]); |
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scalecolor(input[nfiles].coef, f); |
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continue; |
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case 'c': |
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colval(input[nfiles].coef,RED)*=atof(argv[++a]); |
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colval(input[nfiles].coef,GRN)*=atof(argv[++a]); |
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colval(input[nfiles].coef,BLU)*=atof(argv[++a]); |
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continue; |
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default: |
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goto usage; |
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} |
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else { |
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input[nfiles].name = argv[a]; |
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input[nfiles].fp = fopen(argv[a], "r"); |
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if (input[nfiles].fp == NULL) { |
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perror(argv[a]); |
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quit(1); |
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} |
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} |
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nfiles++; |
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} |
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initfiles(); /* initialize files and variables */ |
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/* go back and get expressions */ |
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for (a = 1; a < argc; a++) { |
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if (argv[a][0] == '-') |
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switch (argv[a][1]) { |
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case 'x': |
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case 'y': |
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case 'w': |
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case 'o': |
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continue; |
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case 'f': |
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fcompile(argv[++a]); |
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continue; |
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case 'e': |
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scompile(argv[++a], NULL, 0); |
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continue; |
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} |
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break; |
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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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putchar('\n'); |
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fputresolu(YMAJOR|YDECR, xres, yres, stdout); |
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/* combine pictures */ |
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combine(); |
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quit(0); |
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usage: |
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eputs("Usage: "); |
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eputs(argv[0]); |
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eputs( |
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" [-w][-h][-x xr][-y yr][-e expr][-f file] [ [-s f][-c r g b] pic ..]\n"); |
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quit(1); |
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} |
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|
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|
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tputs(s) /* put out string preceded by a tab */ |
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char *s; |
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{ |
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char fmt[32]; |
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double d; |
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COLOR ctmp; |
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|
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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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} else if (original && isexpos(s)) { /* exposure */ |
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d = 1.0/exposval(s); |
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scalecolor(input[nfiles].coef, d); |
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} else if (original && iscolcor(s)) { /* color correction */ |
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colcorval(ctmp, s); |
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colval(input[nfiles].coef,RED) /= colval(ctmp,RED); |
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colval(input[nfiles].coef,GRN) /= colval(ctmp,GRN); |
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colval(input[nfiles].coef,BLU) /= colval(ctmp,BLU); |
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} else { /* echo unaffected line */ |
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putchar('\t'); |
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fputs(s, stdout); |
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} |
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|
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} |
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|
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|
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initfiles() /* ready files and set variables */ |
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{ |
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double l_colin(), l_coef(); |
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register int n, i; |
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/* process picture headers */ |
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for (n = 0; n < nfiles; n++) { |
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fputs(input[n].name, stdout); |
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fputs(":\n", stdout); |
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getheader(input[n].fp, tputs, NULL); |
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if (wrongformat) { |
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eputs(input[n].name); |
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eputs(": not in Radiance picture format\n"); |
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quit(1); |
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} |
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if (fgetresolu(&xpos, &ypos, input[n].fp) != (YMAJOR|YDECR)) { |
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eputs(input[n].name); |
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eputs(": bad picture size\n"); |
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quit(1); |
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} |
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if (xres == 0 && yres == 0) { |
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xres = xpos; |
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yres = ypos; |
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} else if (xpos != xres || ypos != yres) { |
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eputs(input[n].name); |
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eputs(": resolution mismatch\n"); |
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quit(1); |
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} |
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for (i = 0; i < WINSIZ; i++) |
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input[n].scan[i] = (COLOR *)emalloc(xres*sizeof(COLOR)); |
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} |
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/* prime input */ |
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for (ypos = yres+(MIDSCN-1); ypos >= yres; ypos--) |
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advance(); |
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/* define constants */ |
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varset(vnfiles, ':', (double)nfiles); |
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varset(vxres, ':', (double)xres); |
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varset(vyres, ':', (double)yres); |
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/* set functions */ |
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for (i = 0; i < 3; i++) { |
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funset(vcolcoef[i], 1, ':', l_coef); |
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funset(vcolin[i], 1, '=', l_colin); |
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} |
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funset(vbrtcoef, 1, ':', l_coef); |
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funset(vbrtin, 1, '=', l_colin); |
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} |
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|
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|
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combine() /* combine pictures */ |
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{ |
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EPNODE *coldef[3], *brtdef; |
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COLOR *scanout; |
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double d; |
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register int i, j; |
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/* check defined variables */ |
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for (j = 0; j < 3; j++) { |
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if (vardefined(vcolout[j])) |
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coldef[j] = eparse(vcolout[j]); |
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else |
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coldef[j] = NULL; |
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} |
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if (vardefined(vbrtout)) |
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brtdef = eparse(vbrtout); |
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else |
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brtdef = NULL; |
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/* allocate scanline */ |
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scanout = (COLOR *)emalloc(xres*sizeof(COLOR)); |
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/* combine files */ |
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for (ypos = yres-1; ypos >= 0; ypos--) { |
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advance(); |
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varset(vypos, '=', (double)ypos); |
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for (xpos = 0; xpos < xres; xpos++) { |
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varset(vxpos, '=', (double)xpos); |
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eclock++; |
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if (brtdef != NULL) { |
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d = evalue(brtdef); |
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if (d < 0.0) |
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d = 0.0; |
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setcolor(scanout[xpos], d, d, d); |
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} else { |
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for (j = 0; j < 3; j++) { |
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if (coldef[j] != NULL) { |
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d = evalue(coldef[j]); |
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} else { |
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d = 0.0; |
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for (i = 0; i < nfiles; i++) |
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d += colval(input[i].scan[MIDSCN][xpos],j); |
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} |
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if (d < 0.0) |
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d = 0.0; |
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colval(scanout[xpos],j) = d; |
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} |
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} |
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} |
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if (fwritescan(scanout, xres, stdout) < 0) { |
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perror("write error"); |
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quit(1); |
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} |
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} |
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efree(scanout); |
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} |
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|
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|
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advance() /* read in next scanline */ |
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{ |
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register COLOR *st; |
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register int i, j; |
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|
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for (i = 0; i < nfiles; i++) { |
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st = input[i].scan[WINSIZ-1]; |
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for (j = WINSIZ-1; j > 0; j--) /* rotate window */ |
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input[i].scan[j] = input[i].scan[j-1]; |
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input[i].scan[0] = st; |
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if (ypos < MIDSCN) /* hit bottom */ |
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continue; |
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if (freadscan(st, xres, input[i].fp) < 0) { |
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eputs(input[i].name); |
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eputs(": read error\n"); |
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quit(1); |
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} |
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for (j = 0; j < xres; j++) /* adjust color */ |
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multcolor(st[j], input[i].coef); |
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} |
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} |
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|
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|
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double |
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l_coef(nam) /* return picture coefficients */ |
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register char *nam; |
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{ |
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register int fn, n; |
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double d; |
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|
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fn = (d = argument(1)) - .5; |
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if (d <= -.5 || fn >= nfiles) { |
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errno = EDOM; |
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return(0.0); |
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} |
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if (d < .5) |
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return((double)nfiles); |
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if (nam == vbrtcoef) |
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return(bright(input[fn].coef)); |
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n = 3; |
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while (n--) |
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if (nam == vcolcoef[n]) |
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return(colval(input[fn].coef,n)); |
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eputs("Bad call to l_coef()!\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_colin(nam) /* return color value for picture */ |
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register char *nam; |
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{ |
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int fn; |
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register int n, xoff, yoff; |
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double d; |
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|
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fn = (d = argument(1)) - .5; |
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if (d <= -.5 || fn >= nfiles) { |
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errno = EDOM; |
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return(0.0); |
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} |
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if (d < .5) |
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return((double)nfiles); |
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xoff = yoff = 0; |
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n = nargum(); |
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if (n >= 2) { |
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d = argument(2); |
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if (d < 0.0) { |
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xoff = d-.5; |
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if (xpos+xoff < 0) |
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xoff = -xpos; |
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} else { |
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xoff = d+.5; |
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if (xpos+xoff >= xres) |
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xoff = xres-1-xpos; |
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} |
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} |
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if (n >= 3) { |
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d = argument(3); |
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if (d < 0.0) { |
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yoff = d-.5; |
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if (yoff+MIDSCN < 0) |
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yoff = -MIDSCN; |
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if (ypos+yoff < 0) |
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yoff = -ypos; |
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} else { |
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yoff = d+.5; |
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if (yoff+MIDSCN >= WINSIZ) |
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yoff = WINSIZ-1-MIDSCN; |
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if (ypos+yoff >= yres) |
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yoff = yres-1-ypos; |
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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][xpos+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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return(colval(input[fn].scan[MIDSCN+yoff][xpos+xoff],n)); |
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eputs("Bad call to l_colin()!\n"); |
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quit(1); |
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} |
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|
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|
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wputs(msg) |
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char *msg; |
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{ |
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if (!nowarn) |
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eputs(msg); |
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} |
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|
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|
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eputs(msg) |
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char *msg; |
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{ |
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fputs(msg, stderr); |
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} |
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|
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|
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quit(code) |
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int code; |
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{ |
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exit(code); |
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} |
