| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: psplot.c,v 1.1 2003/02/22 02:07:26 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
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* psplot.c - routines for generating PostScript output. |
| 6 |
* |
| 7 |
* 9/23/88 |
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*/ |
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|
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#include "meta.h" |
| 11 |
|
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#include <ctype.h> |
| 13 |
|
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#ifdef SMALLAREA |
| 15 |
#define HMARGIN (0.2*72) /* horizontal margin */ |
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#define VMARGIN (0.2*72) /* vertical margin */ |
| 17 |
#define PWIDTH (6*72-2*HMARGIN) /* width of device */ |
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#define PHEIGHT (6*72-2*VMARGIN) /* height of device */ |
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#else |
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#define HMARGIN (.6*72) /* horizontal margin */ |
| 21 |
#define VMARGIN (.6*72) /* vertical margin */ |
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#define PWIDTH (8.5*72-2*HMARGIN) /* width of device */ |
| 23 |
#define PHEIGHT (11*72-2*VMARGIN) /* height of device */ |
| 24 |
#endif |
| 25 |
|
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#define PSQUARE PWIDTH /* maximal square */ |
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|
| 28 |
#define MAXPATHL 700 /* maximum path length */ |
| 29 |
|
| 30 |
#define PREFIX "seg_" /* name prefix */ |
| 31 |
#define ESCCHAR '#' /* to introduce hex in name */ |
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|
| 33 |
#define checkline() if (inaline) endline() |
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|
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|
| 36 |
static int savelvl = 0; |
| 37 |
|
| 38 |
static int inaline = 0; |
| 39 |
|
| 40 |
static char hexdigit[] = "0123456789ABCDEF"; |
| 41 |
|
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static char buf[512]; |
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|
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|
| 45 |
static char * |
| 46 |
convertname(s) /* convert to segment name */ |
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char *s; |
| 48 |
{ |
| 49 |
register char *cp, *cp0; |
| 50 |
|
| 51 |
for (cp = buf, cp0 = PREFIX; *cp0; ) |
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*cp++ = *cp0++; |
| 53 |
for (cp0 = s; *cp0; cp0++) { |
| 54 |
if (isalnum(*cp0)) |
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*cp++ = *cp0; |
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else { |
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*cp++ = ESCCHAR; |
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*cp++ = hexdigit[*cp0 >> 4]; |
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*cp++ = hexdigit[*cp0 & 0xf]; |
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} |
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} |
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*cp = '\0'; |
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return(buf); |
| 64 |
} |
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|
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|
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static char * |
| 68 |
convertstring(s) /* convert to acceptable string */ |
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register char *s; |
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{ |
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register char *cp; |
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|
| 73 |
for (cp = buf; *s; s++) { |
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if (*s == '(' || *s == ')') |
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*cp++ = '\\'; |
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if (isprint(*s)) |
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*cp++ = *s; |
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else { |
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*cp++ = '\\'; |
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*cp++ = (*s>>6) + '0'; |
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*cp++ = (*s>>3 & 07) + '0'; |
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*cp++ = (*s & 07) + '0'; |
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} |
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} |
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*cp = '\0'; |
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return(buf); |
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} |
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|
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|
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init(id) /* initialize */ |
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char *id; |
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{ |
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printf("%%!PS-Adobe-2.0 EPSF-2.0\n"); |
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printf("%%%%BoundingBox: %.0f %.0f %.0f %.0f\n", |
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HMARGIN+(PWIDTH-PSQUARE)/2., |
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VMARGIN+(PHEIGHT-PSQUARE)/2., |
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HMARGIN+(PWIDTH-PSQUARE)/2.+PSQUARE, |
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VMARGIN+(PHEIGHT-PSQUARE)/2.+PSQUARE); |
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printf("%%%%DocumentFonts: Helvetica Courier\n"); |
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if (id != NULL) |
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printf("%%%%Creator: %s\n", id); |
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printf("gsave\n"); |
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printf("save\n"); |
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printf("256 dict begin\n"); |
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printf("%f %f translate\n", HMARGIN+(PWIDTH-PSQUARE)/2., |
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VMARGIN+(PHEIGHT-PSQUARE)/2.); |
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printf("%f %f scale\n", (double)PSQUARE/XYSIZE, |
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(double)PSQUARE/XYSIZE); |
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printf("/mapping matrix currentmatrix def\n"); |
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printf("/segment {\t\t%% name lth pat col dir xmn ymn xmx ymx\n"); |
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printf("\t/startstate save def\n"); |
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printf("\t128 dict begin\t\t%% get parameters\n"); |
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printf("\t/ymax exch def /xmax exch def\n"); |
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printf("\t/ymin exch def /xmin exch def\n"); |
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printf("\t/orient exch def\n"); |
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printf("\t/colndx exch def /patndx exch def /lthick exch def\n"); |
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printf("\t%% segment name left on stack\n"); |
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printf("\txmax xmin add 2 div ymax ymin add 2 div translate\n"); |
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printf("\txmax xmin sub %d div ymax ymin sub %d div scale\n", |
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XYSIZE, XYSIZE); |
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printf("\torient 90 mul rotate\n"); |
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printf("\t%d %d translate\n", -XYSIZE/2, -XYSIZE/2); |
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printf("\tcvx exec\t\t\t%% execute segment\n"); |
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printf("\tend\n"); |
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printf("\tstartstate restore\n"); |
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printf("} def\n"); |
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printf("/vstr {\t\t\t%% string\n"); |
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printf("\t0 setcolor\n"); |
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printf("\t/Helvetica findfont setfont\n"); |
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printf("\tdup stringwidth pop %d exch div %d scale\n", XYSIZE, XYSIZE); |
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printf("\tcurrentfont charorigin translate\n"); |
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printf("\t0 0 moveto show\n"); |
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printf("} def\n"); |
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printf("/charorigin {\t\t\t%% font charorigin xorg yorg\n"); |
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printf("\tdup /FontBBox get aload pop pop pop\n"); |
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printf("\t3 2 roll /FontMatrix get transform\n"); |
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printf("\texch neg exch neg\n"); |
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printf("} def\n"); |
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printf("/newline {\t\t\t%% lpat lthick col x0 y0\n"); |
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printf("\tnewpath moveto\n"); |
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printf("\tsetcolor setlthick setlpat\n"); |
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printf("} def\n"); |
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printf("/rfilldict 4 dict def\n"); |
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printf("/rfill {\t\t\t%% pat col xmn ymn xmx ymx\n"); |
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printf("\trfilldict begin\n"); |
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printf("\t/ymax exch def /xmax exch def\n"); |
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printf("\t/ymin exch def /xmin exch def\n"); |
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printf("\tsetcolor setpattern\n"); |
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printf("\tnewpath\n"); |
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printf("\txmin ymin moveto\n"); |
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printf("\txmax ymin lineto\n"); |
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printf("\txmax ymax lineto\n"); |
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printf("\txmin ymax lineto\n"); |
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printf("\tclosepath patfill\n"); |
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printf("\tend\n"); |
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printf("} def\n"); |
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printf("/fillpoly {\t\t\t%% pat col mark x1 y1 .. xn yn\n"); |
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printf("\tnewpath moveto\n"); |
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printf("\tcounttomark 2 idiv { lineto } repeat cleartomark\n"); |
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printf("\tclosepath\n"); |
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printf("\tsetcolor setpattern\n"); |
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printf("\t{ gsave 0 setlinewidth stroke grestore } if\n"); |
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printf("\tpatfill\n"); |
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printf("} def\n"); |
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printf("/mstr {\t\t\t%% fnt col x y\n"); |
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printf("\t100 add moveto setcolor setmfont show\n"); |
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printf("} def\n"); |
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printf("/patfill {\n"); |
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printf("\tfill\t\t\t\t%% unimplemented\n"); |
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printf("} def\n"); |
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printf("/setmfont {\t\t\t%% fontndx\n"); |
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printf("\tmfontab exch get setfont\n"); |
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printf("} def\n"); |
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printf("/setcolor {\t\t\t%% colndx\n"); |
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printf("\tcolndx 0 ne { pop colndx } if\n"); |
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printf("\trgbcoltab exch get aload pop setrgbcolor\n"); |
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printf("} def\n"); |
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printf("/setlthick {\t\t\t%% lthick\n"); |
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printf("\tlthick 0 ne { pop lthick } if\n"); |
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printf("\tsetlinewidth\n"); |
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printf("} def\n"); |
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printf("/setlpat {\t\t\t%% lpatndx\n"); |
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printf("\tdashtab exch get 0 setdash\n"); |
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printf("} def\n"); |
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printf("/setpattern {\t\t\t%% patndx\n"); |
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printf("\tpop\t\t\t\t%% unimplemented\n"); |
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printf("} def\n"); |
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printf("/canonfont\t\t\t%% canonical matrix string font\n"); |
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printf("\t/Courier findfont\n"); |
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printf("\tdup charorigin matrix translate\n"); |
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printf("\tmakefont\n"); |
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printf("def\n"); |
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printf("/mfontab [\t\t\t%% hardware font table\n"); |
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printf("\t[\n"); |
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printf("\t\t[ 340 0 0 340 0 -340 ]\n"); |
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printf("\t\t[ 681 0 0 340 0 -340 ]\n"); |
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printf("\t\t[ 340 0 0 681 0 -681 ]\n"); |
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printf("\t\t[ 681 0 0 681 0 -681 ]\n"); |
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printf("\t\t[ 282 0 0 282 0 -282 ]\n"); |
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printf("\t\t[ 564 0 0 282 0 -282 ]\n"); |
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printf("\t\t[ 282 0 0 564 0 -564 ]\n"); |
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printf("\t\t[ 564 0 0 564 0 -564 ]\n"); |
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printf("\t\t[ 199 0 0 199 0 -199 ]\n"); |
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printf("\t\t[ 398 0 0 199 0 -199 ]\n"); |
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printf("\t\t[ 199 0 0 398 0 -398 ]\n"); |
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printf("\t\t[ 398 0 0 398 0 -398 ]\n"); |
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printf("\t\t[ 169 0 0 169 0 -169 ]\n"); |
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printf("\t\t[ 339 0 0 169 0 -169 ]\n"); |
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printf("\t\t[ 169 0 0 339 0 -339 ]\n"); |
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printf("\t\t[ 339 0 0 339 0 -339 ]\n"); |
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printf("\t]\n"); |
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printf("\t{ canonfont exch makefont }\n"); |
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printf("\tforall\n"); |
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printf("] def\n"); |
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printf("/dashtab [ [ ] [ 200 80 ] [ 80 80 ] [ 200 80 80 80 ] ] def\n"); |
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printf("/rgbcoltab [ [ 0 0 0 ] [ 1 0 0 ] [ 0 1 0 ] [ 0 0 1 ] ] def\n"); |
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printf("/colndx 0 def /patndx 0 def /lthick 0 def\n"); |
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printf("%%%%EndProlog\n"); |
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} |
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|
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|
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done() /* done with graphics */ |
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{ |
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printf("end\nrestore\ngrestore\n"); |
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} |
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|
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|
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endpage() /* done with page */ |
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{ |
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checkline(); |
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|
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printf("showpage\nmapping setmatrix\n"); |
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} |
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|
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|
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segopen(s) /* open a segment */ |
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char *s; |
| 238 |
{ |
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checkline(); |
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|
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printf("/%s {\n", convertname(s)); |
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} |
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|
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|
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segclose() /* close a segment */ |
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{ |
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checkline(); |
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|
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printf("} def\n"); |
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} |
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|
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|
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doseg(p) /* instance of a segment */ |
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register PRIMITIVE *p; |
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{ |
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checkline(); |
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|
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printf("/%s %d %d %d ", convertname(p->args), |
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WIDTH(p->arg0>>2 & 03), |
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p->arg0>>2 & 03, p->arg0 & 03); |
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printf("%d %d %d %d %d segment\n", p->arg0>>4, |
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p->xy[XMN], p->xy[YMN], p->xy[XMX], p->xy[YMX]); |
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} |
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|
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|
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printstr(p) /* print a string */ |
| 267 |
register PRIMITIVE *p; |
| 268 |
{ |
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checkline(); |
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printf("(%s) %d %d %d %d mstr\n", convertstring(p->args), |
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p->arg0>>2 & 017, p->arg0 & 03, |
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p->xy[XMN], p->xy[YMX]); |
| 273 |
} |
| 274 |
|
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|
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plotvstr(p) /* print a vector string */ |
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register PRIMITIVE *p; |
| 278 |
{ |
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checkline(); |
| 280 |
|
| 281 |
printf("(%s) /vstr %d 0 %d ", convertstring(p->args), |
| 282 |
WIDTH(p->arg0>>2 & 03), p->arg0 & 03); |
| 283 |
printf("%d %d %d %d %d segment\n", p->arg0>>4, |
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p->xy[XMN], p->xy[YMN], p->xy[XMX], p->xy[YMX]); |
| 285 |
} |
| 286 |
|
| 287 |
|
| 288 |
plotlseg(p) /* plot a line segment */ |
| 289 |
register PRIMITIVE *p; |
| 290 |
{ |
| 291 |
static int right = FALSE; |
| 292 |
static int curx, cury; |
| 293 |
static int curlpat, curlthick, curlcol; |
| 294 |
int y1, y2; |
| 295 |
int lpat, lthick, lcol; |
| 296 |
|
| 297 |
if (p->arg0 & 0100) { |
| 298 |
y1 = p->xy[YMX]; |
| 299 |
y2 = p->xy[YMN]; |
| 300 |
} else { |
| 301 |
y1 = p->xy[YMN]; |
| 302 |
y2 = p->xy[YMX]; |
| 303 |
} |
| 304 |
lpat = p->arg0>>4 & 03; |
| 305 |
lthick = WIDTH(p->arg0>>2 & 03); |
| 306 |
lcol = p->arg0 & 03; |
| 307 |
if (!inaline || lpat != curlpat || |
| 308 |
lthick != curlthick || lcol != curlcol) { |
| 309 |
checkline(); |
| 310 |
printf("%d %d %d %d %d newline\n", |
| 311 |
curlpat = lpat, |
| 312 |
curlthick = lthick, |
| 313 |
curlcol = lcol, |
| 314 |
curx = p->xy[XMN], |
| 315 |
cury = y1); |
| 316 |
} |
| 317 |
if (curx == p->xy[XMN] && cury == y1) { |
| 318 |
printf("%d %d lineto\n", curx = p->xy[XMX], cury = y2); |
| 319 |
} else if (curx == p->xy[XMX] && cury == y2) { |
| 320 |
printf("%d %d lineto\n", curx = p->xy[XMN], cury = y1); |
| 321 |
} else if ( (right = !right) ) { |
| 322 |
printf("%d %d moveto ", p->xy[XMN], y1); |
| 323 |
printf("%d %d lineto\n", curx = p->xy[XMX], cury = y2); |
| 324 |
} else { |
| 325 |
printf("%d %d moveto ", p->xy[XMX], y2); |
| 326 |
printf("%d %d lineto\n", curx = p->xy[XMN], cury = y1); |
| 327 |
} |
| 328 |
if (++inaline >= MAXPATHL) |
| 329 |
endline(); |
| 330 |
} |
| 331 |
|
| 332 |
|
| 333 |
endline() /* close current line */ |
| 334 |
{ |
| 335 |
printf("stroke\n"); |
| 336 |
inaline = 0; |
| 337 |
} |
| 338 |
|
| 339 |
|
| 340 |
fillrect(p) /* fill a rectangle */ |
| 341 |
register PRIMITIVE *p; |
| 342 |
{ |
| 343 |
checkline(); |
| 344 |
|
| 345 |
printf("%d %d %d %d %d %d rfill\n", p->arg0>>2 & 03, p->arg0 & 03, |
| 346 |
p->xy[XMN], p->xy[YMN], p->xy[XMX], p->xy[YMX]); |
| 347 |
} |
| 348 |
|
| 349 |
|
| 350 |
filltri(p) /* fill a triangle */ |
| 351 |
register PRIMITIVE *p; |
| 352 |
{ |
| 353 |
static short corn[4][2] = {XMN,YMX,XMN,YMN,XMX,YMN,XMX,YMX}; |
| 354 |
int orient; |
| 355 |
register int i; |
| 356 |
|
| 357 |
checkline(); |
| 358 |
|
| 359 |
printf("false %d %d mark\n", p->arg0>>2 & 03, p->arg0 & 03); |
| 360 |
orient = p->arg0>>4 & 03; |
| 361 |
for (i = 0; i < 4; i++) |
| 362 |
if (i != orient) |
| 363 |
printf("%d %d ", p->xy[corn[i][0]], |
| 364 |
p->xy[corn[i][1]]); |
| 365 |
printf("fillpoly\n"); |
| 366 |
} |
| 367 |
|
| 368 |
|
| 369 |
xform(xp, yp, p) /* transform a point according to p */ |
| 370 |
register int *xp, *yp; |
| 371 |
register PRIMITIVE *p; |
| 372 |
{ |
| 373 |
int x, y; |
| 374 |
|
| 375 |
switch (p->arg0 & 060) { |
| 376 |
case 0: /* right */ |
| 377 |
x = *xp; |
| 378 |
y = *yp; |
| 379 |
break; |
| 380 |
case 020: /* up */ |
| 381 |
x = (XYSIZE-1) - *yp; |
| 382 |
y = *xp; |
| 383 |
break; |
| 384 |
case 040: /* left */ |
| 385 |
x = (XYSIZE-1) - *xp; |
| 386 |
y = (XYSIZE-1) - *yp; |
| 387 |
break; |
| 388 |
case 060: /* down */ |
| 389 |
x = *yp; |
| 390 |
y = (XYSIZE-1) - *xp; |
| 391 |
break; |
| 392 |
} |
| 393 |
*xp = CONV(x, p->xy[XMX] - p->xy[XMN]) + p->xy[XMN]; |
| 394 |
*yp = CONV(y, p->xy[YMX] - p->xy[YMN]) + p->xy[YMN]; |
| 395 |
} |
| 396 |
|
| 397 |
|
| 398 |
fillpoly(p) /* fill a polygon */ |
| 399 |
register PRIMITIVE *p; |
| 400 |
{ |
| 401 |
extern char *nextscan(); |
| 402 |
register char *s; |
| 403 |
int curx, cury; |
| 404 |
|
| 405 |
checkline(); |
| 406 |
|
| 407 |
printf("%s %d %d mark\n", p->arg0 & 0100 ? "false" : "true", |
| 408 |
p->arg0>>2 & 03, p->arg0 & 03); |
| 409 |
s = p->args; |
| 410 |
while ((s = nextscan(nextscan(s, "%d", &curx), "%d", &cury)) != NULL) { |
| 411 |
xform(&curx, &cury, p); |
| 412 |
printf("%d %d ", curx, cury); |
| 413 |
} |
| 414 |
printf("fillpoly\n"); |
| 415 |
} |
| 416 |
|
| 417 |
|
| 418 |
set(attrib, val) /* set an attribute or context */ |
| 419 |
int attrib; |
| 420 |
char *val; |
| 421 |
{ |
| 422 |
checkline(); |
| 423 |
|
| 424 |
switch (attrib) { |
| 425 |
case SALL: |
| 426 |
printf("save\n"); |
| 427 |
savelvl++; |
| 428 |
break; |
| 429 |
case SPAT0: |
| 430 |
case SPAT1: |
| 431 |
case SPAT2: |
| 432 |
case SPAT3: |
| 433 |
break; |
| 434 |
default: |
| 435 |
error(WARNING, "illegal set command"); |
| 436 |
break; |
| 437 |
} |
| 438 |
} |
| 439 |
|
| 440 |
|
| 441 |
unset(attrib) /* unset an attribute or context */ |
| 442 |
int attrib; |
| 443 |
{ |
| 444 |
checkline(); |
| 445 |
|
| 446 |
switch (attrib) { |
| 447 |
case SALL: |
| 448 |
if (savelvl > 0) { |
| 449 |
printf("restore\n"); |
| 450 |
savelvl--; |
| 451 |
} |
| 452 |
break; |
| 453 |
case SPAT0: |
| 454 |
case SPAT1: |
| 455 |
case SPAT2: |
| 456 |
case SPAT3: |
| 457 |
break; |
| 458 |
default: |
| 459 |
error(WARNING, "illegal unset command"); |
| 460 |
break; |
| 461 |
} |
| 462 |
} |
| 463 |
|
| 464 |
|
| 465 |
reset(attrib) /* reset an attribute or context */ |
| 466 |
int attrib; |
| 467 |
{ |
| 468 |
checkline(); |
| 469 |
|
| 470 |
switch (attrib) { |
| 471 |
case SALL: |
| 472 |
while (savelvl > 0) { |
| 473 |
printf("restore\n"); |
| 474 |
savelvl--; |
| 475 |
} |
| 476 |
printf("restore save\n"); |
| 477 |
break; |
| 478 |
case SPAT0: |
| 479 |
case SPAT1: |
| 480 |
case SPAT2: |
| 481 |
case SPAT3: |
| 482 |
break; |
| 483 |
default: |
| 484 |
error(WARNING, "illegal reset command"); |
| 485 |
break; |
| 486 |
} |
| 487 |
} |
