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/* Copyright (c) 1991 Regents of the University of California */ |
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/* Copyright (c) 1992 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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#define ICONSIZ (8*10) /* maximum icon dimension (even 8) */ |
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|
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#define ourscreen DefaultScreen(thedisplay) |
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#define ourblack BlackPixel(thedisplay,ourscreen) |
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#define ourwhite WhitePixel(thedisplay,ourscreen) |
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#define ourroot RootWindow(thedisplay,ourscreen) |
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#define revline(x0,y0,x1,y1) XDrawLine(thedisplay,wind,revgc,x0,y0,x1,y1) |
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char *dispname = NULL; /* our display name */ |
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Window wind = 0; /* our output window */ |
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unsigned long ourblack=0, ourwhite=1; /* black and white for this visual */ |
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Font fontid; /* our font */ |
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int maxcolors = 0; /* maximum colors */ |
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maxcolors = 2; |
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break; |
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case 'd': |
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if (argv[i][2] == 'i') { |
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if (argv[i][2] == 'i') |
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dispname = argv[++i]; |
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break; |
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} |
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dither = !dither; |
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else |
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dither = !dither; |
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break; |
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case 'f': |
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fast = !fast; |
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scale = atoi(argv[++i]); |
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break; |
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case 'g': |
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if (!strcmp(argv[i], "-geometry")) |
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if (argv[i][2] == 'e') |
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geometry = argv[++i]; |
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else |
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gamcor = atof(argv[++i]); |
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getevent(); /* main loop */ |
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userr: |
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fprintf(stderr, |
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"Usage: %s [-geometry spec][-b][-m][-d][-f][-c ncolors][-e +/-stops] file\n", |
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"Usage: %s [-display disp][-geometry spec][-b][-m][-d][-f][-c ncolors][-e +/-stops] file\n", |
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progname); |
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quit(1); |
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} |
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CWBackPixel|CWBorderPixel|CWColormap, &ourwinattr); |
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if (wind == 0) |
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quiterr("cannot create window"); |
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XFreeColormap(thedisplay, ourwinattr.colormap); |
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width = xmax; |
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height = ymax; |
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ourgc = XCreateGC(thedisplay, wind, 0, 0); |
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XSetState(thedisplay, ourgc, BlackPixel(thedisplay,ourscreen), |
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WhitePixel(thedisplay,ourscreen), GXcopy, AllPlanes); |
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XSetState(thedisplay, ourgc, ourblack, ourwhite, GXcopy, AllPlanes); |
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revgc = XCreateGC(thedisplay, wind, 0, 0); |
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XSetFunction(thedisplay, revgc, GXinvert); |
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fontid = XLoadFont(thedisplay, FONTNAME); |
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getbestvis() /* get the best visual for this screen */ |
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{ |
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#ifdef DEBUG |
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static char vistype[][12] = { |
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"StaticGray", |
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"GrayScale", |
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"TrueColor", |
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"DirectColor" |
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}; |
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#endif |
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static int rankings[3][6] = { |
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{TrueColor,DirectColor,PseudoColor,GrayScale,StaticGray,-1}, |
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{PseudoColor,GrayScale,-1}, |
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{PseudoColor,GrayScale,-1} |
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{PseudoColor,GrayScale,StaticGray,-1}, |
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{PseudoColor,GrayScale,StaticGray,-1} |
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}; |
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XVisualInfo *xvi; |
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int vismatched; |
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xvi = XGetVisualInfo(thedisplay,VisualScreenMask,&ourvis,&vismatched); |
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if (xvi == NULL) |
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quiterr("no visuals for this screen!"); |
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for (i = 0; i < vismatched; i++) |
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fprintf(stderr, "Type %s, depth %d\n", vistype[xvi[i].class], xvi[i].depth); |
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#ifdef DEBUG |
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fprintf(stderr, "Supported visuals:\n"); |
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for (i = 0; i < vismatched; i++) |
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fprintf(stderr, "\ttype %s, depth %d\n", |
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vistype[xvi[i].class], xvi[i].depth); |
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#endif |
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for (i = 0, j = 1; j < vismatched; j++) |
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if (viscmp(&xvi[i],&xvi[j]) > 0) |
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i = j; |
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quiterr("inadequate visuals on this screen"); |
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/* OK, we'll use it */ |
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copystruct(&ourvis, &xvi[i]); |
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fprintf(stderr, "Selected visual type %s, depth %d\n", vistype[ourvis.class], |
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ourvis.depth); |
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#ifdef DEBUG |
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fprintf(stderr, "Selected visual type %s, depth %d\n", |
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vistype[ourvis.class], ourvis.depth); |
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#endif |
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/* make appropriate adjustments */ |
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if (ourvis.class == GrayScale || ourvis.class == StaticGray) |
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greyscale = 1; |
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if (1<<ourvis.depth < maxcolors) |
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maxcolors = 1<<ourvis.depth; |
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if (ourvis.depth <= 8 && ourvis.colormap_size < maxcolors) |
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maxcolors = ourvis.colormap_size; |
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if (maxcolors > 4) |
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maxcolors -= 2; |
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if (ourvis.class == StaticGray) { |
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ourblack = 0; |
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ourwhite = 255; |
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} else if (ourvis.class == PseudoColor) { |
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ourblack = BlackPixel(thedisplay,ourscreen); |
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ourwhite = WhitePixel(thedisplay,ourscreen); |
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if ((ourblack|ourwhite) & ~255L) { |
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ourblack = 0; |
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ourwhite = 1; |
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} |
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} else { |
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ourblack = 0; |
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ourwhite = ourvis.red_mask|ourvis.green_mask|ourvis.blue_mask; |
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} |
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XFree((char *)xvi); |
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} |
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xmax, ymax, 8); |
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if (ourras == NULL) |
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goto fail; |
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if (greyscale) |
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biq(dither,maxcolors,1,ourmap); |
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else |
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ciq(dither,maxcolors,1,ourmap); |
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if (init_rcolors(ourras, ourmap[0], ourmap[1], ourmap[2]) == 0) |
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goto fail; |
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if (ourvis.class == StaticGray) |
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getgrey(); |
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else { |
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if (greyscale) |
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biq(dither,maxcolors,1,ourmap); |
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else |
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ciq(dither,maxcolors,1,ourmap); |
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if (init_rcolors(ourras, ourmap[0], |
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ourmap[1], ourmap[2]) == 0) |
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goto fail; |
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} |
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} |
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return; |
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return; |
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fail: |
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quiterr("could not create raster image"); |
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} |
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make_rpixmap(ourras, wind); |
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break; |
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case UnmapNotify: |
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unmap_rcolors(ourras); |
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if (!fast) |
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unmap_rcolors(ourras); |
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break; |
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case Expose: |
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redraw(e.e.x, e.e.y, e.e.width, e.e.height); |
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} |
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|
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getgrey() /* get greyscale data */ |
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{ |
876 |
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int y; |
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register unsigned char *dp; |
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register int x; |
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/* set gamma correction */ |
880 |
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setcolrgam(gamcor); |
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/* read and convert file */ |
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dp = ourdata; |
883 |
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for (y = 0; y < ymax; y++) { |
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if (getscan(y) < 0) |
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quiterr("seek error in getfull"); |
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if (scale) |
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shiftcolrs(scanline, xmax, scale); |
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colrs_gambs(scanline, xmax); |
889 |
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add2icon(y, scanline); |
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if (ourvis.colormap_size < 256) |
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for (x = 0; x < xmax; x++) |
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*dp++ = ((long)normbright(scanline[x]) * |
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ourvis.colormap_size + 128) >> 8; |
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else |
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for (x = 0; x < xmax; x++) |
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*dp++ = normbright(scanline[x]); |
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} |
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} |
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|
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|
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scale_rcolors(xr, sf) /* scale color map */ |
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register XRASTER *xr; |
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double sf; |
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picwritecm(map) /* handled elsewhere */ |
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colormap map; |
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{ |
992 |
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#ifdef DEBUG |
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#if 0 |
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register int i; |
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995 |
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for (i = 0; i < 256; i++) |