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/* Copyright (c) 1990 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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#define BORWIDTH 5 /* border width */ |
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|
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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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|
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double exposure = 1.0; /* exposure compensation used */ |
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|
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int wrongformat = 0; /* input in another format? */ |
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|
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GC revgc; /* graphics context with GXinvert */ |
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|
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XRASTER *ourras; /* our stored image */ |
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char *geometry = NULL; /* geometry specification */ |
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|
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char icondata[ICONSIZ*ICONSIZ/8]; /* icon bitmap data */ |
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int iconwidth = 0, iconheight = 0; |
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|
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char *progname; |
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|
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char errmsg[128]; |
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} else if (i != argc) |
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goto userr; |
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/* get header */ |
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getheader(fin, headline); |
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getheader(fin, headline, NULL); |
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/* get picture dimensions */ |
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if (fgetresolu(&xmax, &ymax, fin) != (YMAJOR|YDECR)) |
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quiterr("bad picture size"); |
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if (wrongformat || fgetresolu(&xmax, &ymax, fin) != (YMAJOR|YDECR)) |
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quiterr("bad picture format"); |
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/* set view parameters */ |
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if (gotview && setview(&ourview) != NULL) |
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gotview = 0; |
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{ |
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static char *altname[] = {"rview","rpict","pinterp",VIEWSTR,NULL}; |
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register char **an; |
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char fmt[32]; |
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|
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if (isexpos(s)) |
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exposure *= exposval(s); |
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else |
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else if (isformat(s)) { |
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formatval(fmt, s); |
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wrongformat = strcmp(fmt, COLRFMT); |
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} else |
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for (an = altname; *an != NULL; an++) |
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if (!strncmp(*an, s, strlen(*an))) { |
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if (sscanview(&ourview, s+strlen(*an)) > 0) |
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|
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init() /* get data and open window */ |
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{ |
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XWMHints ourxwmhints; |
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XSetWindowAttributes ourwinattr; |
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XSizeHints oursizhints; |
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register int i; |
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XSetFont(thedisplay, ourgc, fontid); |
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revgc = XCreateGC(thedisplay, wind, 0, 0); |
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XSetFunction(thedisplay, revgc, GXinvert); |
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XStoreName(thedisplay, wind, fname == NULL ? progname : fname); |
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XDefineCursor(thedisplay, wind, XCreateFontCursor(thedisplay, |
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XC_diamond_cross)); |
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XStoreName(thedisplay, wind, fname == NULL ? progname : fname); |
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if (geometry != NULL) { |
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bzero((char *)&oursizhints, sizeof(oursizhints)); |
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i = XParseGeometry(geometry, &oursizhints.x, &oursizhints.y, |
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&oursizhints.width, &oursizhints.height); |
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(unsigned *)&oursizhints.width, |
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(unsigned *)&oursizhints.height); |
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if ((i&(WidthValue|HeightValue)) == (WidthValue|HeightValue)) |
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oursizhints.flags |= USSize; |
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else { |
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} |
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XSetNormalHints(thedisplay, wind, &oursizhints); |
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} |
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ourxwmhints.flags = InputHint|IconPixmapHint; |
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ourxwmhints.input = True; |
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ourxwmhints.icon_pixmap = XCreateBitmapFromData(thedisplay, |
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wind, icondata, iconwidth, iconheight); |
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XSetWMHints(thedisplay, wind, &ourxwmhints); |
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XSelectInput(thedisplay, wind, ButtonPressMask|ButtonReleaseMask |
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|ButtonMotionMask|StructureNotifyMask |
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|KeyPressMask|ExposureMask); |
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} |
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return; |
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fail: |
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quit("could not create raster image"); |
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quiterr("could not create raster image"); |
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} |
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sprintf(buf, "%.3f", intens(cval)/exposure); |
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break; |
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case 'l': /* luminance */ |
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sprintf(buf, "%.0fn", bright(cval)*683.0/exposure); |
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sprintf(buf, "%.0fL", luminance(cval)/exposure); |
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break; |
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case 'c': /* color */ |
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comp = pow(2.0, (double)scale); |
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XBell(thedisplay, 0); |
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return(-1); |
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} |
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viewray(rorg, rdir, &ourview, |
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if (viewray(rorg, rdir, &ourview, |
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(ekey->x-xoff+.5)/xmax, |
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(ymax-1-ekey->y+yoff+.5)/ymax); |
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(ymax-1-ekey->y+yoff+.5)/ymax) < 0) |
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return(-1); |
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printf("%e %e %e ", rorg[0], rorg[1], rorg[2]); |
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printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]); |
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fflush(stdout); |
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avgbox(clr) /* average color over current box */ |
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COLOR clr; |
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{ |
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static COLOR lc; |
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static int ll, lr, lt, lb; |
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int left, right, top, bottom; |
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int y; |
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double d; |
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bottom = ymax; |
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if (top >= bottom) |
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return(-1); |
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if (left == ll && right == lr && top == lt && bottom == lb) { |
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copycolor(clr, lc); |
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return; |
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} |
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for (y = top; y < bottom; y++) { |
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if (getscan(y) == -1) |
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return(-1); |
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} |
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d = 1.0/((right-left)*(bottom-top)); |
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scalecolor(clr, d); |
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ll = left; lr = right; lt = top; lb = bottom; |
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copycolor(lc, clr); |
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return(0); |
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} |
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{ |
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register unsigned char *dp; |
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register int x, err; |
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int y; |
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rgbpixel *inl; |
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int y, errp; |
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short *cerr; |
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if ((inl = (rgbpixel *)malloc(xmax*sizeof(rgbpixel))) == NULL |
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|| (cerr = (short *)calloc(xmax,sizeof(short))) == NULL) |
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quit("out of memory in getmono"); |
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if ((cerr = (short *)calloc(xmax,sizeof(short))) == NULL) |
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quiterr("out of memory in getmono"); |
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dp = ourdata - 1; |
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for (y = 0; y < ymax; y++) { |
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picreadline3(y, inl); |
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if (getscan(y) < 0) |
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quiterr("seek error in getmono"); |
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normcolrs(scanline, xmax, scale); |
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add2icon(y, scanline); |
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err = 0; |
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for (x = 0; x < xmax; x++) { |
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if (!(x&7)) |
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*++dp = 0; |
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err += rgb_bright(&inl[x]) + cerr[x]; |
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errp = err; |
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err += normbright(scanline[x]) + cerr[x]; |
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if (err > 127) |
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err -= 255; |
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else |
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*dp |= 1<<(7-(x&07)); |
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cerr[x] = err >>= 1; |
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err /= 3; |
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cerr[x] = err + errp; |
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} |
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} |
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free((char *)inl); |
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free((char *)cerr); |
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} |
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add2icon(y, scan) /* add a scanline to our icon data */ |
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int y; |
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COLR *scan; |
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{ |
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static short cerr[ICONSIZ]; |
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static int ynext; |
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static char *dp; |
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register int err; |
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register int x, ti; |
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int errp; |
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|
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if (iconheight == 0) { /* initialize */ |
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if (xmax <= ICONSIZ && ymax <= ICONSIZ) { |
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iconwidth = xmax; |
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iconheight = ymax; |
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} else if (xmax > ymax) { |
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iconwidth = ICONSIZ; |
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iconheight = ICONSIZ*ymax/xmax; |
679 |
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if (iconheight < 1) |
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iconheight = 1; |
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} else { |
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iconwidth = ICONSIZ*xmax/ymax; |
683 |
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if (iconwidth < 1) |
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iconwidth = 1; |
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iconheight = ICONSIZ; |
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} |
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ynext = 0; |
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dp = icondata - 1; |
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} |
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if (y < ynext*ymax/iconheight) /* skip this one */ |
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return; |
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err = 0; |
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for (x = 0; x < iconwidth; x++) { |
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if (!(x&7)) |
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*++dp = 0; |
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errp = err; |
697 |
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ti = x*xmax/iconwidth; |
698 |
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err += normbright(scan[ti]) + cerr[x]; |
699 |
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if (err > 127) |
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err -= 255; |
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else |
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*dp |= 1<<(x&07); |
703 |
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err /= 3; |
704 |
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cerr[x] = err + errp; |
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} |
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ynext++; |
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} |
708 |
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|
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|
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getfull() /* get full (24-bit) data */ |
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{ |
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int y; |
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714 |
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for (y = 0; y < ymax; y++) |
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picreadline3(y, (rgbpixel *)(ourdata+y*xmax*3)); |
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register unsigned char *dp; |
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register int x; |
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/* set gamma correction */ |
716 |
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setcolrgam(gamcor); |
717 |
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/* read and convert file */ |
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dp = ourdata; |
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for (y = 0; y < ymax; y++) { |
720 |
> |
if (getscan(y) < 0) |
721 |
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quiterr("seek error in getfull"); |
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> |
if (scale) |
723 |
> |
shiftcolrs(scanline, xmax, scale); |
724 |
> |
colrs_gambs(scanline, xmax); |
725 |
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add2icon(y, scanline); |
726 |
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for (x = 0; x < xmax; x++) { |
727 |
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*dp++ = scanline[x][RED]; |
728 |
> |
*dp++ = scanline[x][GRN]; |
729 |
> |
*dp++ = scanline[x][BLU]; |
730 |
> |
} |
731 |
> |
} |
732 |
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} |
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if (scanpos == NULL || scanpos[y] == -1) |
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return(-1); |
769 |
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if (fseek(fin, scanpos[y], 0) == -1) |
770 |
< |
quit("fseek error"); |
770 |
> |
quiterr("fseek error"); |
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cury = y; |
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} else if (scanpos != NULL) |
773 |
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scanpos[y] = ftell(fin); |
790 |
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quiterr("cannot seek for picreadline"); |
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/* convert scanline */ |
792 |
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normcolrs(scanline, xmax, scale); |
793 |
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add2icon(y, scanline); |
794 |
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for (i = 0; i < xmax; i++) { |
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l3[i].r = scanline[i][RED]; |
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l3[i].g = scanline[i][GRN]; |
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register int i, val; |
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|
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for (i = 0; i < 256; i++) { |
817 |
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val = pow(i/256.0, 1.0/gamcor) * 256.0; |
817 |
> |
val = pow((i+0.5)/256.0, 1.0/gamcor) * 256.0; |
818 |
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map[0][i] = map[1][i] = map[2][i] = val; |
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} |
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} |