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/* Copyright (c) 1989 Regents of the University of California */ |
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/* Copyright (c) 1991 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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char *vcolin[3] = {"ri", "gi", "bi"}; |
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char *vcolout[3] = {"ro", "go", "bo"}; |
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#define vbrtin "li" |
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#define vbrtout "lo" |
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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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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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extern double l_redin(), l_grnin(), l_bluin(), l_brtin(), atof(); |
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double f; |
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int a; |
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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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funset(vbrtin, 1, l_brtin); |
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for (a = 1; a < argc; a++) |
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if (argv[a][0] == '-') |
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combine() /* combine pictures */ |
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{ |
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EPNODE *coldef[3]; |
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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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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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/* predefine variables */ |
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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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/* 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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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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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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colval(scanout[xpos],j) = 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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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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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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perror("write error"); |
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quit(1); |
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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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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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double |
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l_brtin() /* get brightness value */ |
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{ |
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register int fn; |
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fn = argument(1)+.5; |
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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(bright(input[fn-1].scan[xpos])); |
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} |
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