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/* Copyright (c) 1987 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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* pcompos.c - program to composite pictures. |
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* |
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* 6/30/87 |
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*/ |
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|
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#include <stdio.h> |
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|
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#include "color.h" |
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|
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|
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#define MAXFILE 16 |
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|
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/* output picture size */ |
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int xsiz = 0; |
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int ysiz = 0; |
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/* input dimensions */ |
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int xmin = 0; |
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int ymin = 0; |
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int xmax = 0; |
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int ymax = 0; |
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|
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COLR bgcolr = BLKCOLR; /* background color */ |
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|
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int checkthresh = 0; /* check threshold value */ |
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|
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char *progname; |
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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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int xres, yres; /* picture size */ |
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int xloc, yloc; /* anchor point */ |
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int hasmin, hasmax; /* has threshold values */ |
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COLR thmin, thmax; /* thresholds */ |
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} input[MAXFILE]; /* our input files */ |
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|
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int nfile; /* number of files */ |
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|
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|
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tabputs(s) /* print line preceded by a tab */ |
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char *s; |
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{ |
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putc('\t', stdout); |
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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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double atof(); |
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int an; |
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|
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progname = argv[0]; |
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|
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for (an = 1; an < argc && argv[an][0] == '-'; an++) |
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switch (argv[an][1]) { |
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case 'x': |
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xmax = xsiz = atoi(argv[++an]); |
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break; |
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case 'y': |
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ymax = ysiz = atoi(argv[++an]); |
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break; |
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case 'b': |
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setcolr(bgcolr, atof(argv[an+1]), |
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atof(argv[an+2]), |
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atof(argv[an+3])); |
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an += 3; |
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break; |
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case '\0': |
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case 't': |
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goto dofiles; |
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default: |
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goto userr; |
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} |
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dofiles: |
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for (nfile = 0; an < argc; nfile++) { |
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if (nfile >= MAXFILE) { |
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fprintf(stderr, "%s: too many files\n", progname); |
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quit(1); |
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} |
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input[nfile].hasmin = input[nfile].hasmax = 0; |
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while (an < argc && (argv[an][0] == '-' || argv[an][0] == '+')) |
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switch (argv[an][1]) { |
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case 't': |
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checkthresh = 1; |
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if (argv[an][0] == '-') { |
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input[nfile].hasmin = 1; |
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setcolr(input[nfile].thmin, |
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atof(argv[an+1]), |
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atof(argv[an+1]), |
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atof(argv[an+1])); |
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} else { |
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input[nfile].hasmax = 1; |
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setcolr(input[nfile].thmax, |
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atof(argv[an+1]), |
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atof(argv[an+1]), |
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atof(argv[an+1])); |
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} |
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an += 2; |
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break; |
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case '\0': |
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if (argv[an][0] == '-') |
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goto getfile; |
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/* fall through */ |
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default: |
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goto userr; |
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} |
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getfile: |
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if (argc-an < 3) |
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goto userr; |
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if (!strcmp(argv[an], "-")) { |
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input[nfile].name = "<stdin>"; |
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input[nfile].fp = stdin; |
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} else { |
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input[nfile].name = argv[an]; |
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if ((input[nfile].fp = fopen(argv[an], "r")) == NULL) { |
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fprintf(stderr, "%s: cannot open\n", argv[an]); |
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quit(1); |
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} |
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} |
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an++; |
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/* get header */ |
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printf("%s:\n", input[nfile].name); |
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getheader(input[nfile].fp, tabputs); |
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/* get picture size */ |
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if (fscanf(input[nfile].fp, "-Y %d +X %d\n", |
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&input[nfile].yres, &input[nfile].xres) != 2) { |
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fprintf(stderr, "%s: bad picture size\n", |
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input[nfile].name); |
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quit(1); |
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} |
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input[nfile].xloc = atoi(argv[an++]); |
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input[nfile].yloc = atoi(argv[an++]); |
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if (input[nfile].xloc < xmin) |
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xmin = input[nfile].xloc; |
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if (input[nfile].yloc < ymin) |
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ymin = input[nfile].yloc; |
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if (input[nfile].xloc+input[nfile].xres > xmax) |
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xmax = input[nfile].xloc+input[nfile].xres; |
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if (input[nfile].yloc+input[nfile].yres > ymax) |
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ymax = input[nfile].yloc+input[nfile].yres; |
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} |
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if (xsiz <= 0) |
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xsiz = xmax; |
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if (ysiz <= 0) |
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ysiz = ymax; |
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/* add new header info. */ |
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printargs(argc, argv, stdout); |
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printf("\n-Y %d +X %d\n", ysiz, xsiz); |
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|
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compos(); |
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|
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quit(0); |
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userr: |
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fprintf(stderr, "Usage: %s [-x xres][-y yres][-b r g b] ", progname); |
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fprintf(stderr, "[-t min1][+t max1] file1 x1 y1 ..\n"); |
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quit(1); |
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} |
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|
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|
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compos() /* composite pictures */ |
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{ |
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COLR *scanin, *scanout; |
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int y; |
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register int x, i; |
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|
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scanin = (COLR *)malloc((xmax-xmin)*sizeof(COLR)) - xmin; |
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scanin = (COLR *)malloc((xmax-xmin)*sizeof(COLR)) - xmin; |
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if (scanin == NULL) |
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goto memerr; |
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scanin -= xmin; |
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if (checkthresh) { |
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scanout = (COLR *)malloc(xsiz*sizeof(COLR)); |
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if (scanout == NULL) |
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goto memerr; |
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} else |
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scanout = scanin; |
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for (y = ymax-1; y >= 0; y--) { |
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for (x = 0; x < xsiz; x++) |
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copycolr(scanout[x], bgcolr); |
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for (i = 0; i < nfile; i++) { |
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if (input[i].yloc > y || |
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input[i].yloc+input[i].yres <= y) |
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continue; |
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if (freadcolrs(scanin+input[i].xloc, |
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input[i].xres, input[i].fp) < 0) { |
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fprintf(stderr, "%s: read error (y==%d)\n", |
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input[i].name, |
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y-input[i].yloc); |
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quit(1); |
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} |
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if (y >= ysiz) |
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continue; |
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if (checkthresh) { |
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x = input[i].xloc+input[i].xres; |
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if (x > xsiz) |
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x = xsiz; |
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for (x--; x >= 0 && x >= input[i].xloc; x--) { |
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if (input[i].hasmin && |
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cmpcolr(scanin[x], input[i].thmin) <= 0) |
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continue; |
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if (input[i].hasmax && |
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cmpcolr(scanin[x], input[i].thmax) >= 0) |
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continue; |
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copycolr(scanout[x], scanin[x]); |
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} |
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} |
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} |
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if (y >= ysiz) |
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continue; |
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if (fwritecolrs(scanout, xsiz, stdout) < 0) { |
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fprintf(stderr, "%s: write error\n", progname); |
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quit(1); |
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} |
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} |
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return; |
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memerr: |
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fprintf(stderr, "%s: out of memory\n", progname); |
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quit(1); |
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} |
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|
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|
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int |
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cmpcolr(c1, c2) /* compare two colr's (improvisation) */ |
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register COLR c1, c2; |
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{ |
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register int i, j; |
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|
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j = 4; /* check exponents first! */ |
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while (j--) |
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if (i = c1[j] - c2[j]) |
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return(i); |
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return(0); |
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} |
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|
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|
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quit(code) /* exit gracefully */ |
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int code; |
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{ |
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exit(code); |
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} |
