| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: psign.c,v 2.21 2003/06/21 15:05:01 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
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* psign.c - produce picture from text. |
| 6 |
* |
| 7 |
* 7/1/87 |
| 8 |
*/ |
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|
| 10 |
#include "copyright.h" |
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|
| 12 |
#include <string.h> |
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|
| 14 |
#include "standard.h" |
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#include "platform.h" |
| 16 |
#include "color.h" |
| 17 |
#include "font.h" |
| 18 |
|
| 19 |
#ifndef SSS |
| 20 |
#define SSS 3 /* super-sample size */ |
| 21 |
#endif |
| 22 |
|
| 23 |
#define MAXLINE 512 /* longest allowable line */ |
| 24 |
|
| 25 |
char *fontfile = "helvet.fnt"; /* our font file */ |
| 26 |
|
| 27 |
COLOR bgcolor = WHTCOLOR; /* background color */ |
| 28 |
COLOR fgcolor = BLKCOLOR; /* foreground color */ |
| 29 |
|
| 30 |
int direct = 'r'; /* direction (right, up, left, down) */ |
| 31 |
|
| 32 |
int cheight = 32*SSS; /* character height */ |
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double aspect = 1.67; /* height/width character aspect */ |
| 34 |
double spacing = 0.0; /* character spacing */ |
| 35 |
int cwidth; /* computed character width */ |
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|
| 37 |
unsigned char *ourbitmap; /* our output bitmap */ |
| 38 |
int xsiz, ysiz; /* bitmap dimensions */ |
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int xdim; /* size of horizontal scan (bytes) */ |
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|
| 41 |
/* conflicting def's in param.h */ |
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#undef tstbit |
| 43 |
#undef setbit |
| 44 |
#undef clrbit |
| 45 |
#undef tglbit |
| 46 |
|
| 47 |
#define bitop(x,y,op) (ourbitmap[(y)*xdim+((x)>>3)] op (1<<((x)&7))) |
| 48 |
#define tstbit(x,y) bitop(x,y,&) |
| 49 |
#define setbit(x,y) bitop(x,y,|=) |
| 50 |
#define clrbit(x,y) bitop(x,y,&=~) |
| 51 |
#define tglbit(x,y) bitop(x,y,^=) |
| 52 |
|
| 53 |
FONT *ourfont; /* our font */ |
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|
| 55 |
typedef struct line { |
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char *s; /* line w/o LF */ |
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short *sp; /* character spacing */ |
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struct line *next; /* next line up */ |
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} LINE; |
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|
| 61 |
LINE *ourtext; /* our text */ |
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int nlines, maxline; /* text dimensions */ |
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int maxwidth; /* maximum line width (dvi) */ |
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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 an; |
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SET_FILE_BINARY(stdout); |
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for (an = 1; an < argc && argv[an][0] == '-'; an++) |
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switch (argv[an][1]) { |
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case 'c': /* color */ |
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switch (argv[an][2]) { |
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case 'f': /* foreground */ |
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setcolor(fgcolor, atof(argv[an+1]), |
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atof(argv[an+2]), |
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atof(argv[an+3])); |
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an += 3; |
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break; |
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case 'b': /* background */ |
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setcolor(bgcolor, atof(argv[an+1]), |
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atof(argv[an+2]), |
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atof(argv[an+3])); |
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an += 3; |
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break; |
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default: |
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goto unkopt; |
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} |
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break; |
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case 'f': /* font */ |
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fontfile = argv[++an]; |
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break; |
| 95 |
case 'd': /* direction */ |
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switch (argv[an][2]) { |
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case 'r': /* right */ |
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case 'u': /* up */ |
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case 'l': /* left */ |
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case 'd': /* down */ |
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direct = argv[an][2]; |
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break; |
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default: |
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goto unkopt; |
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} |
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break; |
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case 'x': /* x resolution */ |
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xsiz = atoi(argv[++an])*SSS; |
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break; |
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case 'y': |
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ysiz = atoi(argv[++an])*SSS; |
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break; |
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case 'h': /* height of characters */ |
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cheight = atoi(argv[++an])*SSS; |
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break; |
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case 'a': /* aspect ratio */ |
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aspect = atof(argv[++an]); |
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break; |
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case 's': /* spacing */ |
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spacing = atof(argv[++an]); |
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break; |
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default:; |
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unkopt: |
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fprintf(stderr, "%s: unknown option: %s\n", |
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argv[0], argv[an]); |
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exit(1); |
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} |
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/* load font file */ |
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ourfont = getfont(fontfile); |
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/* get text */ |
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if (an == argc) |
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gettext(stdin); |
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else |
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arg_text(argc-an, argv+an); |
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|
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/* create bit map */ |
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makemap(); |
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/* convert text to bitmap */ |
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maptext(); |
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/* print header */ |
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newheader("RADIANCE", stdout); |
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printargs(argc, argv, stdout); |
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fputformat(COLRFMT, stdout); |
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putchar('\n'); |
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/* write out bitmap */ |
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writemap(stdout); |
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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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makemap() /* create the bit map */ |
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{ |
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double pictaspect; |
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|
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if (direct == 'r' || direct == 'l') { |
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if (xsiz <= 0) { |
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cwidth = cheight/aspect + 0.5; |
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xsiz = (long)maxwidth*cwidth >> 8; |
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ysiz = nlines*cheight; |
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} else if (aspect > FTINY) { |
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if (ysiz <= 0) |
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ysiz = cheight*nlines; |
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pictaspect = 256*nlines*aspect/maxwidth; |
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if (pictaspect*xsiz < ysiz) |
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ysiz = pictaspect*xsiz + 0.5; |
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else |
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xsiz = ysiz/pictaspect + 0.5; |
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cheight = ysiz/nlines; |
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cwidth = cheight/aspect; |
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} else { |
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if (ysiz <= 0) |
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ysiz = cheight*nlines; |
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pictaspect = (double)ysiz/xsiz; |
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aspect = pictaspect*maxwidth/(256*nlines); |
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cheight = ysiz/nlines; |
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cwidth = cheight/aspect; |
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} |
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} else { /* reverse orientation */ |
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if (ysiz <= 0) { |
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cwidth = cheight/aspect + 0.5; |
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xsiz = nlines*cheight; |
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ysiz = (long)maxwidth*cwidth >> 8; |
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} else if (aspect > FTINY) { |
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if (xsiz <= 0) |
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xsiz = cheight*nlines; |
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pictaspect = maxwidth/(256*nlines*aspect); |
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if (pictaspect*xsiz < ysiz) |
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ysiz = pictaspect*xsiz + 0.5; |
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else |
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xsiz = ysiz/pictaspect + 0.5; |
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cheight = xsiz/nlines; |
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cwidth = cheight/aspect; |
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} else { |
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if (xsiz <= 0) |
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xsiz = cheight*nlines; |
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pictaspect = (double)ysiz/xsiz; |
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aspect = maxwidth/(256*nlines*pictaspect); |
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cheight = xsiz/nlines; |
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cwidth = cheight/aspect; |
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} |
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} |
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if (xsiz % SSS) |
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xsiz += SSS - xsiz%SSS; |
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if (ysiz % SSS) |
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ysiz += SSS - ysiz%SSS; |
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xdim = (xsiz+7)/8; |
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ourbitmap = (BYTE *)bmalloc(ysiz*xdim); |
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if (ourbitmap == NULL) |
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error(SYSTEM, "Out of memory in makemap"); |
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memset((char *)ourbitmap, '\0', ysiz*xdim); |
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} |
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|
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|
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gettext(fp) /* get text from a file */ |
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FILE *fp; |
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{ |
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char buf[MAXLINE]; |
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register LINE *curl; |
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int len; |
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|
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maxline = 0; |
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maxwidth = 0; |
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nlines = 0; |
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while (fgets(buf, MAXLINE, fp) != NULL) { |
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curl = (LINE *)malloc(sizeof(LINE)); |
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if (curl == NULL) |
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goto memerr; |
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len = strlen(buf); |
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curl->s = (char *)malloc(len); |
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curl->sp = (short *)malloc(sizeof(short)*len--); |
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if (curl->s == NULL | curl->sp == NULL) |
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goto memerr; |
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if (len > maxline) |
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maxline = len; |
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strncpy(curl->s, buf, len); |
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curl->s[len] = '\0'; |
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if (spacing < -1./256.) |
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len = squeeztext(curl->sp, curl->s, ourfont, |
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(int)(spacing*-256.)); |
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else if (spacing > 1./256.) |
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len = proptext(curl->sp, curl->s, ourfont, |
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(int)(spacing*256.), 3); |
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else |
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len = uniftext(curl->sp, curl->s, ourfont); |
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if (len > maxwidth) |
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maxwidth = len; |
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curl->next = ourtext; |
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ourtext = curl; |
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nlines++; |
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} |
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return; |
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memerr: |
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error(SYSTEM, "Out of memory in gettext"); |
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} |
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|
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|
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arg_text(ac, av) /* get text from arguments */ |
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int ac; |
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char *av[]; |
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{ |
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register char *cp; |
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|
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ourtext = (LINE *)malloc(sizeof(LINE)); |
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if (ourtext == NULL) |
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goto memerr; |
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ourtext->s = (char *)malloc(MAXLINE); |
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if (ourtext->s == NULL) |
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goto memerr; |
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for (cp = ourtext->s; ac-- > 0; av++) { |
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strcpy(cp, *av); |
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cp += strlen(*av); |
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*cp++ = ' '; |
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} |
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*--cp = '\0'; |
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ourtext->next = NULL; |
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maxline = strlen(ourtext->s); |
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ourtext->sp = (short *)malloc(sizeof(short)*(maxline+1)); |
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if (ourtext->sp == NULL) |
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goto memerr; |
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if (spacing < -1./256.) |
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maxwidth = squeeztext(ourtext->sp, ourtext->s, ourfont, |
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(int)(spacing*-256.)); |
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else if (spacing > 1./256.) |
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maxwidth = proptext(ourtext->sp, ourtext->s, ourfont, |
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(int)(spacing*256.), 3); |
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else |
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maxwidth = uniftext(ourtext->sp, ourtext->s, ourfont); |
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nlines = 1; |
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return; |
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memerr: |
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error(SYSTEM, "Out of memory in arg_text"); |
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} |
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|
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|
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maptext() /* map our text */ |
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{ |
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register LINE *curl; |
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int l, len; |
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register int i, c; |
| 301 |
|
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for (l = 0, curl = ourtext; curl != NULL; l += 256, curl = curl->next) { |
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len = strlen(curl->s); c = 0; |
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for (i = 0; i < len; i++) { |
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c += curl->sp[i]; |
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mapglyph(ourfont->fg[curl->s[i]&0xff], c, l); |
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} |
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} |
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} |
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|
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|
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mapglyph(gl, tx0, ty0) /* convert a glyph */ |
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GLYPH *gl; |
| 314 |
int tx0, ty0; |
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{ |
| 316 |
int n; |
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register GORD *gp; |
| 318 |
int p0[2], p1[2]; |
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|
| 320 |
if (gl == NULL) |
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return; |
| 322 |
|
| 323 |
n = gl->nverts; |
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gp = gvlist(gl); |
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mapcoord(p0, gp[2*n-2]+tx0, gp[2*n-1]+ty0); |
| 326 |
while (n--) { |
| 327 |
mapcoord(p1, gp[0]+tx0, gp[1]+ty0); |
| 328 |
mapedge(p0[0], p0[1], p1[0]-p0[0], p1[1]-p0[1]); |
| 329 |
p0[0] = p1[0]; p0[1] = p1[1]; |
| 330 |
gp += 2; |
| 331 |
} |
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} |
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|
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|
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mapcoord(p, tx, ty) /* map text to picture coordinates */ |
| 336 |
int p[2], tx, ty; |
| 337 |
{ |
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tx = (long)tx*cwidth >> 8; |
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ty = (long)ty*cheight >> 8; |
| 340 |
|
| 341 |
switch (direct) { |
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case 'r': /* right */ |
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p[0] = tx; |
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p[1] = ty; |
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return; |
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case 'u': /* up */ |
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p[0] = xsiz-1-ty; |
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p[1] = tx; |
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return; |
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case 'l': /* left */ |
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p[0] = xsiz-1-tx; |
| 352 |
p[1] = ysiz-1-ty; |
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return; |
| 354 |
case 'd': /* down */ |
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p[0] = ty; |
| 356 |
p[1] = ysiz-1-tx; |
| 357 |
return; |
| 358 |
} |
| 359 |
} |
| 360 |
|
| 361 |
|
| 362 |
mapedge(x, y, run, rise) /* map an edge */ |
| 363 |
register int x, y; |
| 364 |
int run, rise; |
| 365 |
{ |
| 366 |
int xstep; |
| 367 |
int rise2, run2; |
| 368 |
int n; |
| 369 |
|
| 370 |
if (rise == 0) |
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return; |
| 372 |
/* always draw up */ |
| 373 |
if (rise < 0) { |
| 374 |
x += run; |
| 375 |
y += rise; |
| 376 |
rise = -rise; |
| 377 |
run = -run; |
| 378 |
} |
| 379 |
if (run < 0) { |
| 380 |
xstep = -1; |
| 381 |
run = -run; |
| 382 |
} else |
| 383 |
xstep = 1; |
| 384 |
n = rise; |
| 385 |
run2 = rise2 = 0; |
| 386 |
while (n) |
| 387 |
if (rise2 >= run2) { |
| 388 |
tglbit(x, y); |
| 389 |
n--; |
| 390 |
y++; |
| 391 |
run2 += run; |
| 392 |
} else { |
| 393 |
x += xstep; |
| 394 |
rise2 += rise; |
| 395 |
} |
| 396 |
} |
| 397 |
|
| 398 |
|
| 399 |
writemap(fp) /* write out bitmap */ |
| 400 |
FILE *fp; |
| 401 |
{ |
| 402 |
COLR pixval[SSS*SSS+1]; /* possible pixel values */ |
| 403 |
COLOR ctmp0, ctmp1; |
| 404 |
double d; |
| 405 |
COLR *scanout; |
| 406 |
int x, y; |
| 407 |
register int i, j; |
| 408 |
int cnt; |
| 409 |
register int inglyph; |
| 410 |
|
| 411 |
fprintf(fp, "-Y %d +X %d\n", ysiz/SSS, xsiz/SSS); |
| 412 |
|
| 413 |
scanout = (COLR *)malloc(xsiz/SSS*sizeof(COLR)); |
| 414 |
if (scanout == NULL) |
| 415 |
error(SYSTEM, "Out of memory in writemap"); |
| 416 |
for (i = 0; i <= SSS*SSS; i++) { /* compute possible values */ |
| 417 |
copycolor(ctmp0, fgcolor); |
| 418 |
d = (double)i/(SSS*SSS); |
| 419 |
scalecolor(ctmp0, d); |
| 420 |
copycolor(ctmp1, bgcolor); |
| 421 |
d = 1.0 - d; |
| 422 |
scalecolor(ctmp1, d); |
| 423 |
addcolor(ctmp0, ctmp1); |
| 424 |
setcolr(pixval[i], colval(ctmp0,RED), |
| 425 |
colval(ctmp0,GRN), colval(ctmp0,BLU)); |
| 426 |
} |
| 427 |
for (y = ysiz/SSS-1; y >= 0; y--) { |
| 428 |
inglyph = 0; |
| 429 |
for (x = 0; x < xsiz/SSS; x++) { |
| 430 |
cnt = 0; |
| 431 |
for (j = 0; j < SSS; j++) |
| 432 |
for (i = 0; i < SSS; i++) { |
| 433 |
if (tstbit(x*SSS+i, y*SSS+j)) |
| 434 |
inglyph ^= 1<<j; |
| 435 |
if (inglyph & 1<<j) |
| 436 |
cnt++; |
| 437 |
} |
| 438 |
copycolr(scanout[x], pixval[cnt]); |
| 439 |
} |
| 440 |
if (fwritecolrs(scanout, xsiz/SSS, fp) < 0) { |
| 441 |
fprintf(stderr, "write error in writemap\n"); |
| 442 |
exit(1); |
| 443 |
} |
| 444 |
} |
| 445 |
free((void *)scanout); |
| 446 |
} |
