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#ifndef lint |
2 |
static const char RCSid[] = "$Id: psign.c,v 2.27 2011/05/20 02:06:39 greg Exp $"; |
3 |
#endif |
4 |
/* |
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* psign.c - produce picture from text. |
6 |
* |
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* 7/1/87 |
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*/ |
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|
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#include "copyright.h" |
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|
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#include <string.h> |
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|
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#include "platform.h" |
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#include "standard.h" |
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#include "resolu.h" |
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#include "color.h" |
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#include "font.h" |
19 |
|
20 |
#ifndef SSS |
21 |
#define SSS 3 /* super-sample size */ |
22 |
#endif |
23 |
|
24 |
#define MAXLINE 512 /* longest allowable line */ |
25 |
|
26 |
char *fontfile = "helvet.fnt"; /* our font file */ |
27 |
|
28 |
COLOR bgcolor = WHTCOLOR; /* background color */ |
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COLOR fgcolor = BLKCOLOR; /* foreground color */ |
30 |
|
31 |
int direct = 'r'; /* direction (right, up, left, down) */ |
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|
33 |
int cheight = 32*SSS; /* character height */ |
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double aspect = 1.67; /* height/width character aspect */ |
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double spacing = 0.0; /* character spacing */ |
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int cwidth; /* computed character width */ |
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|
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unsigned char *ourbitmap; /* our output bitmap */ |
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int xsiz, ysiz; /* bitmap dimensions */ |
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int xdim; /* size of horizontal scan (bytes) */ |
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|
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/* conflicting def's in param.h */ |
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#undef tstbit |
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#undef setbit |
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#undef clrbit |
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#undef tglbit |
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|
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#define bitop(x,y,op) (ourbitmap[(y)*xdim+((x)>>3)] op (1<<((x)&7))) |
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#define tstbit(x,y) bitop(x,y,&) |
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#define setbit(x,y) bitop(x,y,|=) |
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#define clrbit(x,y) bitop(x,y,&=~) |
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#define tglbit(x,y) bitop(x,y,^=) |
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|
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FONT *ourfont; /* our font */ |
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|
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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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|
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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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static void makemap(void); |
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static void get_text(FILE *fp); |
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static void arg_text(int ac, char *av[]); |
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static void maptext(void); |
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static void mapglyph(GLYPH *gl, int tx0, int ty0); |
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static void mapcoord(int p[2], int tx, int ty); |
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static void mapedge(int x, int y, int run, int rise); |
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static void writemap(FILE *fp); |
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|
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|
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int |
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main( |
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int argc, |
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char *argv[] |
80 |
) |
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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; |
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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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if (!ourfont) |
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exit(1); |
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/* get text */ |
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if (an == argc) |
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get_text(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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static void |
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makemap(void) /* 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 = (uby8 *)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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static void |
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get_text( /* get text from a file */ |
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FILE *fp |
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) |
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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 get_text"); |
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} |
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|
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|
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static void |
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arg_text( /* get text from arguments */ |
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int ac, |
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char *av[] |
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) |
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{ |
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register char *cp; |
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|
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ourtext = (LINE *)malloc(sizeof(LINE)); |
284 |
if (ourtext == NULL) |
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goto memerr; |
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ourtext->s = (char *)malloc(MAXLINE); |
287 |
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)); |
298 |
if (ourtext->sp == NULL) |
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goto memerr; |
300 |
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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static void |
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maptext(void) /* map our text */ |
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{ |
318 |
register LINE *curl; |
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int l, len; |
320 |
register int i, c; |
321 |
|
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for (l = 0, curl = ourtext; curl != NULL; l += 256, curl = curl->next) { |
323 |
len = strlen(curl->s); c = 0; |
324 |
for (i = 0; i < len; i++) { |
325 |
c += curl->sp[i]; |
326 |
mapglyph(ourfont->fg[curl->s[i]&0xff], c, l); |
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} |
328 |
} |
329 |
} |
330 |
|
331 |
|
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static void |
333 |
mapglyph( /* convert a glyph */ |
334 |
GLYPH *gl, |
335 |
int tx0, |
336 |
int ty0 |
337 |
) |
338 |
{ |
339 |
int n; |
340 |
register GORD *gp; |
341 |
int p0[2], p1[2]; |
342 |
|
343 |
if (gl == NULL) |
344 |
return; |
345 |
|
346 |
n = gl->nverts; |
347 |
gp = gvlist(gl); |
348 |
mapcoord(p0, gp[2*n-2]+tx0, gp[2*n-1]+ty0); |
349 |
while (n--) { |
350 |
mapcoord(p1, gp[0]+tx0, gp[1]+ty0); |
351 |
mapedge(p0[0], p0[1], p1[0]-p0[0], p1[1]-p0[1]); |
352 |
p0[0] = p1[0]; p0[1] = p1[1]; |
353 |
gp += 2; |
354 |
} |
355 |
} |
356 |
|
357 |
|
358 |
static void |
359 |
mapcoord( /* map text to picture coordinates */ |
360 |
int p[2], |
361 |
int tx, |
362 |
int ty |
363 |
) |
364 |
{ |
365 |
tx = (long)tx*cwidth >> 8; |
366 |
ty = (long)ty*cheight >> 8; |
367 |
|
368 |
switch (direct) { |
369 |
case 'r': /* right */ |
370 |
p[0] = tx; |
371 |
p[1] = ty; |
372 |
return; |
373 |
case 'u': /* up */ |
374 |
p[0] = xsiz-1-ty; |
375 |
p[1] = tx; |
376 |
return; |
377 |
case 'l': /* left */ |
378 |
p[0] = xsiz-1-tx; |
379 |
p[1] = ysiz-1-ty; |
380 |
return; |
381 |
case 'd': /* down */ |
382 |
p[0] = ty; |
383 |
p[1] = ysiz-1-tx; |
384 |
return; |
385 |
} |
386 |
} |
387 |
|
388 |
|
389 |
static void |
390 |
mapedge( /* map an edge */ |
391 |
register int x, |
392 |
register int y, |
393 |
int run, |
394 |
int rise |
395 |
) |
396 |
{ |
397 |
int xstep; |
398 |
int rise2, run2; |
399 |
int n; |
400 |
|
401 |
if (rise == 0) |
402 |
return; |
403 |
/* always draw up */ |
404 |
if (rise < 0) { |
405 |
x += run; |
406 |
y += rise; |
407 |
rise = -rise; |
408 |
run = -run; |
409 |
} |
410 |
if (run < 0) { |
411 |
xstep = -1; |
412 |
run = -run; |
413 |
} else |
414 |
xstep = 1; |
415 |
n = rise; |
416 |
run2 = rise2 = 0; |
417 |
while (n) |
418 |
if (rise2 >= run2) { |
419 |
tglbit(x, y); |
420 |
n--; |
421 |
y++; |
422 |
run2 += run; |
423 |
} else { |
424 |
x += xstep; |
425 |
rise2 += rise; |
426 |
} |
427 |
} |
428 |
|
429 |
|
430 |
static void |
431 |
writemap( /* write out bitmap */ |
432 |
FILE *fp |
433 |
) |
434 |
{ |
435 |
COLR pixval[SSS*SSS+1]; /* possible pixel values */ |
436 |
COLOR ctmp0, ctmp1; |
437 |
double d; |
438 |
COLR *scanout; |
439 |
int x, y; |
440 |
register int i, j; |
441 |
int cnt; |
442 |
register int inglyph; |
443 |
|
444 |
fprintf(fp, "-Y %d +X %d\n", ysiz/SSS, xsiz/SSS); |
445 |
|
446 |
scanout = (COLR *)malloc(xsiz/SSS*sizeof(COLR)); |
447 |
if (scanout == NULL) |
448 |
error(SYSTEM, "Out of memory in writemap"); |
449 |
for (i = 0; i <= SSS*SSS; i++) { /* compute possible values */ |
450 |
copycolor(ctmp0, fgcolor); |
451 |
d = (double)i/(SSS*SSS); |
452 |
scalecolor(ctmp0, d); |
453 |
copycolor(ctmp1, bgcolor); |
454 |
d = 1.0 - d; |
455 |
scalecolor(ctmp1, d); |
456 |
addcolor(ctmp0, ctmp1); |
457 |
setcolr(pixval[i], colval(ctmp0,RED), |
458 |
colval(ctmp0,GRN), colval(ctmp0,BLU)); |
459 |
} |
460 |
for (y = ysiz/SSS-1; y >= 0; y--) { |
461 |
inglyph = 0; |
462 |
for (x = 0; x < xsiz/SSS; x++) { |
463 |
cnt = 0; |
464 |
for (j = 0; j < SSS; j++) |
465 |
for (i = 0; i < SSS; i++) { |
466 |
if (tstbit(x*SSS+i, y*SSS+j)) |
467 |
inglyph ^= 1<<j; |
468 |
if (inglyph & 1<<j) |
469 |
cnt++; |
470 |
} |
471 |
copycolr(scanout[x], pixval[cnt]); |
472 |
} |
473 |
if (fwritecolrs(scanout, xsiz/SSS, fp) < 0) { |
474 |
fprintf(stderr, "write error in writemap\n"); |
475 |
exit(1); |
476 |
} |
477 |
} |
478 |
free((void *)scanout); |
479 |
} |