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#include <stdio.h> |
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#include <math.h> |
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#include <ctype.h> |
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#ifdef MSDOS |
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#include <fcntl.h> |
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#endif |
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#include "color.h" |
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|
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#define UPPER(c) ((c)&~0x20) /* ASCII trick */ |
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|
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#define CODE6GAM 1.47 /* gamma for 6-bit codes */ |
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#define DEFDGAM 1.0 /* default device gamma */ |
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#define DEFGGAM 1.0 /* greyscale device gamma */ |
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#define DEFCGAM 1.8 /* color device gamma */ |
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|
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#define GRY -1 /* artificial index for grey */ |
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|
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#define HMARGIN (.5*72) /* horizontal margin */ |
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#define VMARGIN (.5*72) /* vertical margin */ |
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#define PWIDTH (8.5*72-2*HMARGIN) /* width of device */ |
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#define PHEIGHT (11*72-2*VMARGIN) /* height of device */ |
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#define DEFMARG 0.5 /* default margin (inches) */ |
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#define DEFWIDTH 8.5 /* default page width */ |
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#define DEFHEIGHT 11 /* default page height */ |
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#define HMARGIN (hmarg*72) /* horizontal margin */ |
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#define VMARGIN (vmarg*72) /* vertical margin */ |
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#define PWIDTH (width*72-2*HMARGIN) /* width of device */ |
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#define PHEIGHT (height*72-2*VMARGIN) /* height of device */ |
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|
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#define RUNCHR '*' /* character to start rle */ |
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#define MINRUN 4 /* minimum run-length */ |
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int wrongformat = 0; /* input in wrong format? */ |
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double pixaspect = 1.0; /* pixel aspect ratio */ |
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|
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double devgam = DEFDGAM; /* device gamma response */ |
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int docolor = 0; /* produce color image? */ |
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double devgam = 0.; /* device gamma response */ |
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double hmarg = DEFMARG, |
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vmarg = DEFMARG; /* horizontal and vertical margins */ |
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double width = DEFWIDTH, |
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height = DEFHEIGHT; /* default paper width and height */ |
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double dpi = 0; /* print density (0 if unknown) */ |
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int docolor = 1; /* produce color image? */ |
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int bradj = 0; /* brightness adjustment */ |
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int ncopies = 1; /* number of copies */ |
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|
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char *progname; |
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int xmax, ymax; |
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int xmax, ymax; /* input image dimensions */ |
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|
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extern char *malloc(); |
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extern double unit2inch(); |
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|
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int |
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headline(s) /* check header line */ |
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char *s; |
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{ |
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wrongformat = strcmp(fmt, COLRFMT); |
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} else if (isaspect(s)) |
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pixaspect *= aspectval(s); |
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return(0); |
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} |
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char *argv[]; |
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{ |
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int i; |
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double d; |
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progname = argv[0]; |
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case 'C': /* compressed ASCII encoding */ |
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putprim = Cputprim; |
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break; |
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case 'g': |
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case 'd': /* print density */ |
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dpi = atof(argv[++i]); |
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break; |
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case 'g': /* device gamma adjustment */ |
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devgam = atof(argv[++i]); |
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break; |
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case 'p': /* paper size */ |
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parsepaper(argv[++i]); |
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break; |
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case 'm': /* margin */ |
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d = atof(argv[i+1]); |
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d *= unit2inch(argv[i+1]); |
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switch (argv[i][2]) { |
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case '\0': |
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hmarg = vmarg = d; |
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break; |
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case 'h': |
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hmarg = d; |
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break; |
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case 'v': |
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vmarg = d; |
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break; |
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default: |
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goto userr; |
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} |
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i++; |
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break; |
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case 'e': /* exposure adjustment */ |
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
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goto userr; |
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if (wrongformat || fgetresolu(&xmax, &ymax, stdin) < 0) |
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quiterr("bad picture format"); |
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/* gamma compression */ |
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if (devgam <= 0.05) |
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devgam = docolor ? DEFCGAM : DEFGGAM; |
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if (putprim == Cputprim) |
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setcolrgam(CODE6GAM/devgam); |
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setcolrgam(CODE6GAM); |
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else if (devgam != 1.) |
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setcolrgam(1./devgam); |
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setcolrgam(devgam); |
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/* write header */ |
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PSheader(i <= argc-1 ? argv[i] : "<stdin>"); |
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PSheader(argc, argv); |
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/* convert file */ |
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ra2ps(); |
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/* write trailer */ |
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PStrailer(); |
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exit(0); |
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userr: |
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fprintf(stderr, "Usage: %s [-b|c][-A|B|C][-e +/-stops][-g gamma] [input [output]]\n", |
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fprintf(stderr, |
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"Usage: %s [-b|c][-A|B|C][-e +/-stops][-p paper][-m[h|v] margin][-d dpi][-g gamma] [input [output]]\n", |
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progname); |
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exit(1); |
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} |
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double |
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unit2inch(s) /* determine unit */ |
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register char *s; |
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{ |
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static struct unit {char n; float f;} u[] = { |
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'i', 1., |
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'm', 1./25.4, |
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'c', 1./2.54, |
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'\0' }; |
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register struct unit *up; |
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|
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while (*s && !isalpha(*s)) |
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s++; |
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for (up = u; up->n; up++) |
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if (up->n == *s) |
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return(up->f); |
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return(1.); |
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} |
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|
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|
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int |
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matchid(name, id) /* see if name matches id (case insensitive) */ |
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char *name; |
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register char *id; |
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{ |
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register char *s = name; |
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|
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while (*s) { |
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if (isalpha(*s)) { |
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if (!isalpha(*id) || UPPER(*s) != UPPER(*id)) |
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return(0); |
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} else if (*s != *id) |
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return(0); |
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s++; id++; |
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} |
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return(!*id || s-name >= 3); /* substrings >= 3 chars OK */ |
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} |
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|
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|
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parsepaper(ps) /* determine paper size from name */ |
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char *ps; |
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{ |
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static struct psize {char n[12]; float w,h;} p[] = { |
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"envelope", 4.12, 9.5, |
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"executive", 7.25, 10.5, |
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"letter", 8.5, 11., |
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"lettersmall", 7.68, 10.16, |
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"legal", 8.5, 14., |
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"monarch", 3.87, 7.5, |
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"statement", 5.5, 8.5, |
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"tabloid", 11., 17., |
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"A3", 11.69, 16.54, |
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"A4", 8.27, 11.69, |
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"A4small", 7.47, 10.85, |
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"A5", 6.00, 8.27, |
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"A6", 4.13, 6.00, |
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"B4", 10.12, 14.33, |
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"B5", 7.17, 10.12, |
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"C5", 6.38, 9.01, |
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"C6", 4.49, 6.38, |
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"DL", 4.33, 8.66, |
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"hagaki", 3.94, 5.83, |
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"" }; |
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register struct psize *pp; |
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register char *s = ps; |
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double d; |
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|
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if (isdigit(*s)) { /* check for WWxHH specification */ |
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width = atof(s); |
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while (*s && !isalpha(*s)) |
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s++; |
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d = unit2inch(s); |
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height = atof(++s); |
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width *= d; |
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height *= d; |
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if (width >= 1. & height >= 1.) |
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return; |
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} else /* check for match to standard size */ |
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for (pp = p; pp->n[0]; pp++) |
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if (matchid(s, pp->n)) { |
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width = pp->w; |
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height = pp->h; |
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return; |
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} |
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fprintf(stderr, "%s: unknown paper size \"%s\" -- known sizes:\n", |
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progname, ps); |
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fprintf(stderr, "_Name________Width_Height_(inches)\n"); |
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for (pp = p; pp->n[0]; pp++) |
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fprintf(stderr, "%-11s %5.2f %5.2f\n", pp->n, pp->w, pp->h); |
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fprintf(stderr, "Or use WWxHH size specification\n"); |
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exit(1); |
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} |
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|
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|
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quiterr(err) /* print message and exit */ |
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char *err; |
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{ |
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} |
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PSheader(name) /* print PostScript header */ |
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char *name; |
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PSheader(ac, av) /* print PostScript header */ |
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int ac; |
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char **av; |
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{ |
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char *rstr; |
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int landscape = 0; |
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int landscape, rotate, n; |
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double pwidth, pheight; |
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double iwidth, iheight; |
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/* EPS comments */ |
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puts("%!PS-Adobe-2.0 EPSF-2.0"); |
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printf("%%%%Title: %s\n", name); |
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printf("%%%%Creator: %s = %s\n", progname, SCCSid); |
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printf("%%%%Title: "); printargs(ac, av, stdout); |
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printf("%%%%Creator: %s\n", SCCSid); |
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printf("%%%%Pages: %d\n", ncopies); |
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if (landscape = xmax > pixaspect*ymax) |
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puts("%%Orientation: Landscape"); |
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else |
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puts("%%Orientation: Portrait"); |
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if (PWIDTH > PHEIGHT ^ landscape) { |
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if (rotate = PWIDTH > PHEIGHT ^ landscape) { |
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pwidth = PHEIGHT; |
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pheight = PWIDTH; |
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} else { |
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pwidth = PWIDTH; |
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pheight = PHEIGHT; |
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} |
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if (pheight/pwidth > pixaspect*ymax/xmax) { |
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iwidth = pwidth; |
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iheight = pwidth*pixaspect*ymax/xmax; |
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} else { |
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iheight = pheight; |
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iwidth = pheight*xmax/(pixaspect*ymax); |
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} |
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if (pwidth == PHEIGHT) |
321 |
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if (dpi > 100 && pixaspect >= 0.99 & pixaspect <= 1.01) |
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if (pheight/pwidth > ymax/xmax) { |
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n = pwidth*dpi/xmax; /* floor */ |
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iwidth = n > 0 ? (double)(n*xmax)/dpi : pwidth; |
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iheight = iwidth*ymax/xmax; |
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} else { |
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n = pheight*dpi/ymax; /* floor */ |
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iheight = n > 0 ? (double)(n*ymax)/dpi : pheight; |
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iwidth = iheight*xmax/ymax; |
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} |
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else |
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if (pheight/pwidth > pixaspect*ymax/xmax) { |
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iwidth = pwidth; |
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iheight = iwidth*pixaspect*ymax/xmax; |
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} else { |
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iheight = pheight; |
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iwidth = iheight*xmax/(pixaspect*ymax); |
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} |
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if (rotate) |
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printf("%%%%BoundingBox: %.0f %.0f %.0f %.0f\n", |
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HMARGIN+(pheight-iheight)*.5, |
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VMARGIN+(pwidth-iwidth)*.5, |
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PSprocdef("read6bitRLE"); |
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/* set up transformation matrix */ |
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printf("%f %f translate\n", HMARGIN, VMARGIN); |
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if (pwidth == PHEIGHT) { |
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if (rotate) { |
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printf("%f 0 translate\n", PWIDTH); |
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puts("90 rotate"); |
369 |
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} |
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for (i = 0; i < 128; i++) /* clear */ |
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itab[i] = -1; |
416 |
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for (i = 1; i < 63; i++) /* assign greys */ |
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itab[code[i]] = 256.0*pow((i+.5)/64.0, CODE6GAM); |
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itab[code[i]] = 256.0*pow((i+.5)/64.0, CODE6GAM/devgam); |
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itab[code[0]] = 0; /* black is black */ |
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itab[code[63]] = 255; /* and white is white */ |
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printf("/codetab ["); |