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#ifndef lint |
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static const char RCSid[] = "$Id: t4027.c,v 2.2 2003/02/22 02:07:28 greg Exp $"; |
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#endif |
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/* |
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* t4027.c - program to dump pixel file to Tektronix 4027. |
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* |
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* 8/15/85 |
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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 NROWS 462 |
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#define NCOLS 640 |
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|
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#define COM 31 /* command character */ |
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|
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char *progname; |
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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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int xres, yres; |
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COLOR scanline[NCOLS]; |
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char sbuf[128]; |
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FILE *fp; |
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register int i; |
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|
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progname = argv[0]; |
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|
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if (argc < 2) |
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fp = stdin; |
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else if ((fp = fopen(argv[1], "r")) == NULL) { |
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fprintf(stderr, "%s: can't open file \"%s\"\n", |
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progname, argv[1]); |
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exit(1); |
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} |
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/* discard header */ |
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while (fgets(sbuf, sizeof(sbuf), fp) != NULL && sbuf[0] != '\n') |
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; |
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/* get picture dimensions */ |
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if (fgets(sbuf, sizeof(sbuf), fp) == NULL || |
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sscanf(sbuf, "-Y %d +X %d\n", &yres, &xres) != 2) { |
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fprintf(stderr, "%s: bad picture size\n", progname); |
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exit(1); |
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} |
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if (xres > NCOLS || yres > NROWS) { |
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fprintf(stderr, "%s: resolution mismatch\n", progname); |
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exit(1); |
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} |
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|
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printf("%cMON1H", COM); |
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printf("%cGRA1 33", COM); |
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|
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for (i = 0; i < yres; i++) { |
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if (freadscan(scanline, xres, fp) < 0) { |
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fprintf(stderr, "%s: read error\n", progname); |
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exit(1); |
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} |
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plotscan(scanline, xres, NROWS-1-i); |
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} |
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fclose(fp); |
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|
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if (isatty(fileno(stdout))) { |
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printf("Hit return when done: "); |
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fflush(stdout); |
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fp = fopen("/dev/tty", "r"); |
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getc(fp); |
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fclose(fp); |
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printf("%cMON34", COM); |
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} |
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putchar('\r'); |
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|
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exit(0); |
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} |
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|
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|
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plotscan(scan, len, y) /* plot a scanline */ |
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COLOR scan[]; |
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int len; |
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int y; |
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{ |
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int color, lastcolor = -1; |
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int lastpos = -1; |
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register int i; |
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|
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for (i = 0; i < len; i++) { |
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|
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color = colormap(scan[i]); |
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if (color != lastcolor) { |
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if (lastpos >= 0) { |
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setdcolr(lastcolor); |
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vector(lastpos, y, i, y); |
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} |
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lastcolor = color; |
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lastpos = i; |
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} |
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} |
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setdcolr(lastcolor); |
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vector(lastpos, y, len-1, y); |
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} |
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|
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|
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int |
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colormap(col) /* compute 4027 color value for col */ |
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COLOR col; |
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{ |
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register int red, grn, blu; |
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|
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red = col[RED] >= 1.0 ? 3 : col[RED]*4; |
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grn = col[GRN] >= 1.0 ? 3 : col[GRN]*4; |
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blu = col[BLU] >= 1.0 ? 3 : col[BLU]*4; |
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|
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return(red<<4 | grn<<2 | blu); |
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} |
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|
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|
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vector(x0, y0, x1, y1) /* output a vector */ |
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int x0, y0, x1, y1; |
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{ |
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printf("%cVEC%d %d %d %d", COM, x0, y0, x1, y1); |
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} |
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|
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|
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setdcolr(col) /* set dithered pattern for terminal */ |
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int col; |
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{ |
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static int cmask[3][4] = { |
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{ 0, 0x88, 0xca, 0xff }, |
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{ 0, 0x44, 0xb2, 0xff }, |
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{ 0, 0x22, 0x2d, 0xff } |
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}; |
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/* isset is a common bitmap related macro in <sys/param.h> */ |
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static short cisset[64]; |
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int pat; |
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register int r, g, b; |
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|
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if (cisset[col]) { |
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printf("%cCOL P%d", COM, col); |
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return; |
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} |
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|
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printf("%cPAT P%d C7", COM, col); |
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|
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r = cmask[0][col>>4]; |
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g = cmask[1][(col>>2) & 03]; |
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b = cmask[2][col & 03]; |
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|
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pat = r & ~(g|b); |
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if (pat) { |
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printf(" C1"); /* red */ |
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printpat(pat); |
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} |
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pat = g & ~(r|b); |
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if (pat) { |
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printf(" C2"); /* green */ |
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printpat(pat); |
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} |
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pat = b & ~(r|g); |
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if (pat) { |
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printf(" C3"); /* blue */ |
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printpat(pat); |
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} |
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pat = r & g & ~b; |
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if (pat) { |
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printf(" C4"); /* yellow */ |
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printpat(pat); |
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} |
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pat = r & b & ~g; |
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if (pat) { |
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printf(" C6"); /* magenta */ |
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printpat(pat); |
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} |
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pat = g & b & ~r; |
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if (pat) { |
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printf(" C5"); /* cyan */ |
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printpat(pat); |
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} |
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pat = r & g & b; |
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if (pat) { |
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printf(" C0"); /* white */ |
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printpat(pat); |
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} |
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cisset[col] = 1; |
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printf("%cCOL P%d", COM, col); |
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} |
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|
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|
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printpat(p) /* print out a pattern */ |
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register int p; |
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{ |
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register int i; |
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|
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for (i = 0; i < 14; i++) { /* 14 rows */ |
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|
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printf(",%d", p); |
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p = rorb(rorb(rorb(p))); /* rotate 3 bits */ |
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} |
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} |
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|
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|
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int |
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rorb(b) /* rotate a byte to the right */ |
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register int b; |
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{ |
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b |= (b&01) << 8; |
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b >>= 1; |
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return(b); |
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} |
