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/* Copyright (c) 1989 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 16 /* maximum number of input files */ |
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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; /* input scanline */ |
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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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|
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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 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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|
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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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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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main(argc, argv) |
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int argc; |
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char *argv[]; |
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{ |
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extern double l_redin(), l_grnin(), l_bluin(), atof(); |
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double f; |
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int a; |
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|
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funset(vcolin[RED], 1, l_redin); |
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funset(vcolin[GRN], 1, l_grnin); |
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funset(vcolin[BLU], 1, l_bluin); |
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|
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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 '\0': |
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case 's': |
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case 'c': |
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goto getfiles; |
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case 'x': |
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xres = atoi(argv[++a]); |
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break; |
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case 'y': |
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yres = atoi(argv[++a]); |
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break; |
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case 'w': |
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nowarn = !nowarn; |
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break; |
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case 'f': |
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fcompile(argv[++a]); |
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break; |
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case 'e': |
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scompile(NULL, argv[++a]); |
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break; |
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default: |
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goto usage; |
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} |
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else |
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break; |
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getfiles: |
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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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eputs(argv[a]); |
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eputs(": cannot open\n"); |
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quit(1); |
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} |
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} |
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fputs(input[nfiles].name, stdout); |
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fputs(":\n", stdout); |
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getheader(input[nfiles].fp, tputs); |
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if (fscanf(input[nfiles].fp, "-Y %d +X %d\n", &ypos, &xpos) != 2) { |
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eputs(input[nfiles].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(argv[0]); |
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eputs(": resolution mismatch\n"); |
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quit(1); |
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} |
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input[nfiles].scan = (COLOR *)emalloc(xres*sizeof(COLOR)); |
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nfiles++; |
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} |
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printargs(argc, argv, stdout); |
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putchar('\n'); |
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printf("-Y %d +X %d\n", yres, xres); |
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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(" [-w][-x xr][-y yr][-e expr][-f file] [ [-s f][-c r g b] picture ..]\n"); |
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quit(1); |
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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]; |
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COLOR *scanout; |
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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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/* 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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for (i = 0; i < nfiles; i++) |
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if (freadscan(input[i].scan, 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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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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for (j = 0; j < 3; j++) { |
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if (coldef[j] != NULL) { |
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colval(scanout[xpos],j) = |
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evalue(coldef[j]); |
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} else { |
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colval(scanout[xpos],j) = 0.0; |
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for (i = 0; i < nfiles; i++) |
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colval(scanout[xpos],j) += |
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colval(input[i].coef,j) * |
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colval(input[i].scan[xpos],j); |
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} |
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if (colval(scanout[xpos],j) < 0.0) |
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colval(scanout[xpos],j) = 0.0; |
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} |
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} |
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if (fwritescan(scanout, xres, stdout) < 0) { |
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eputs("write error\n"); |
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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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double |
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colin(fn, ci) /* return color value for picture */ |
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register int fn, ci; |
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{ |
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if (fn == 0) |
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return((double)nfiles); |
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if (fn < 1 || fn > nfiles) { |
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errno = EDOM; |
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return(0.0); |
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} |
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return(colval(input[fn-1].scan[xpos],ci)); |
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} |
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|
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|
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double |
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l_redin() /* get red color */ |
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{ |
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return(colin((int)(argument(1)+.5), RED)); |
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} |
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|
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|
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double |
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l_grnin() /* get green color */ |
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{ |
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return(colin((int)(argument(1)+.5), GRN)); |
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} |
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|
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|
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double |
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l_bluin() /* get blue color */ |
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{ |
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return(colin((int)(argument(1)+.5), BLU)); |
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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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} |
