1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: psign.c,v 2.20 2003/06/08 12:03:10 schorsch Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* psign.c - produce picture from text. |
6 |
* |
7 |
* 7/1/87 |
8 |
*/ |
9 |
|
10 |
#include "standard.h" |
11 |
#include "platform.h" |
12 |
#include "color.h" |
13 |
#include "font.h" |
14 |
|
15 |
#ifndef SSS |
16 |
#define SSS 3 /* super-sample size */ |
17 |
#endif |
18 |
|
19 |
#define MAXLINE 512 /* longest allowable line */ |
20 |
|
21 |
char *fontfile = "helvet.fnt"; /* our font file */ |
22 |
|
23 |
COLOR bgcolor = WHTCOLOR; /* background color */ |
24 |
COLOR fgcolor = BLKCOLOR; /* foreground color */ |
25 |
|
26 |
int direct = 'r'; /* direction (right, up, left, down) */ |
27 |
|
28 |
int cheight = 32*SSS; /* character height */ |
29 |
double aspect = 1.67; /* height/width character aspect */ |
30 |
double spacing = 0.0; /* character spacing */ |
31 |
int cwidth; /* computed character width */ |
32 |
|
33 |
unsigned char *ourbitmap; /* our output bitmap */ |
34 |
int xsiz, ysiz; /* bitmap dimensions */ |
35 |
int xdim; /* size of horizontal scan (bytes) */ |
36 |
|
37 |
/* conflicting def's in param.h */ |
38 |
#undef tstbit |
39 |
#undef setbit |
40 |
#undef clrbit |
41 |
#undef tglbit |
42 |
|
43 |
#define bitop(x,y,op) (ourbitmap[(y)*xdim+((x)>>3)] op (1<<((x)&7))) |
44 |
#define tstbit(x,y) bitop(x,y,&) |
45 |
#define setbit(x,y) bitop(x,y,|=) |
46 |
#define clrbit(x,y) bitop(x,y,&=~) |
47 |
#define tglbit(x,y) bitop(x,y,^=) |
48 |
|
49 |
FONT *ourfont; /* our font */ |
50 |
|
51 |
typedef struct line { |
52 |
char *s; /* line w/o LF */ |
53 |
short *sp; /* character spacing */ |
54 |
struct line *next; /* next line up */ |
55 |
} LINE; |
56 |
|
57 |
LINE *ourtext; /* our text */ |
58 |
int nlines, maxline; /* text dimensions */ |
59 |
int maxwidth; /* maximum line width (dvi) */ |
60 |
|
61 |
|
62 |
main(argc, argv) |
63 |
int argc; |
64 |
char *argv[]; |
65 |
{ |
66 |
int an; |
67 |
SET_FILE_BINARY(stdout); |
68 |
for (an = 1; an < argc && argv[an][0] == '-'; an++) |
69 |
switch (argv[an][1]) { |
70 |
case 'c': /* color */ |
71 |
switch (argv[an][2]) { |
72 |
case 'f': /* foreground */ |
73 |
setcolor(fgcolor, atof(argv[an+1]), |
74 |
atof(argv[an+2]), |
75 |
atof(argv[an+3])); |
76 |
an += 3; |
77 |
break; |
78 |
case 'b': /* background */ |
79 |
setcolor(bgcolor, atof(argv[an+1]), |
80 |
atof(argv[an+2]), |
81 |
atof(argv[an+3])); |
82 |
an += 3; |
83 |
break; |
84 |
default: |
85 |
goto unkopt; |
86 |
} |
87 |
break; |
88 |
case 'f': /* font */ |
89 |
fontfile = argv[++an]; |
90 |
break; |
91 |
case 'd': /* direction */ |
92 |
switch (argv[an][2]) { |
93 |
case 'r': /* right */ |
94 |
case 'u': /* up */ |
95 |
case 'l': /* left */ |
96 |
case 'd': /* down */ |
97 |
direct = argv[an][2]; |
98 |
break; |
99 |
default: |
100 |
goto unkopt; |
101 |
} |
102 |
break; |
103 |
case 'x': /* x resolution */ |
104 |
xsiz = atoi(argv[++an])*SSS; |
105 |
break; |
106 |
case 'y': |
107 |
ysiz = atoi(argv[++an])*SSS; |
108 |
break; |
109 |
case 'h': /* height of characters */ |
110 |
cheight = atoi(argv[++an])*SSS; |
111 |
break; |
112 |
case 'a': /* aspect ratio */ |
113 |
aspect = atof(argv[++an]); |
114 |
break; |
115 |
case 's': /* spacing */ |
116 |
spacing = atof(argv[++an]); |
117 |
break; |
118 |
default:; |
119 |
unkopt: |
120 |
fprintf(stderr, "%s: unknown option: %s\n", |
121 |
argv[0], argv[an]); |
122 |
exit(1); |
123 |
} |
124 |
/* load font file */ |
125 |
ourfont = getfont(fontfile); |
126 |
/* get text */ |
127 |
if (an == argc) |
128 |
gettext(stdin); |
129 |
else |
130 |
arg_text(argc-an, argv+an); |
131 |
|
132 |
/* create bit map */ |
133 |
makemap(); |
134 |
/* convert text to bitmap */ |
135 |
maptext(); |
136 |
/* print header */ |
137 |
newheader("RADIANCE", stdout); |
138 |
printargs(argc, argv, stdout); |
139 |
fputformat(COLRFMT, stdout); |
140 |
putchar('\n'); |
141 |
/* write out bitmap */ |
142 |
writemap(stdout); |
143 |
|
144 |
exit(0); |
145 |
} |
146 |
|
147 |
|
148 |
makemap() /* create the bit map */ |
149 |
{ |
150 |
double pictaspect; |
151 |
|
152 |
if (direct == 'r' || direct == 'l') { |
153 |
if (xsiz <= 0) { |
154 |
cwidth = cheight/aspect + 0.5; |
155 |
xsiz = (long)maxwidth*cwidth >> 8; |
156 |
ysiz = nlines*cheight; |
157 |
} else if (aspect > FTINY) { |
158 |
if (ysiz <= 0) |
159 |
ysiz = cheight*nlines; |
160 |
pictaspect = 256*nlines*aspect/maxwidth; |
161 |
if (pictaspect*xsiz < ysiz) |
162 |
ysiz = pictaspect*xsiz + 0.5; |
163 |
else |
164 |
xsiz = ysiz/pictaspect + 0.5; |
165 |
cheight = ysiz/nlines; |
166 |
cwidth = cheight/aspect; |
167 |
} else { |
168 |
if (ysiz <= 0) |
169 |
ysiz = cheight*nlines; |
170 |
pictaspect = (double)ysiz/xsiz; |
171 |
aspect = pictaspect*maxwidth/(256*nlines); |
172 |
cheight = ysiz/nlines; |
173 |
cwidth = cheight/aspect; |
174 |
} |
175 |
} else { /* reverse orientation */ |
176 |
if (ysiz <= 0) { |
177 |
cwidth = cheight/aspect + 0.5; |
178 |
xsiz = nlines*cheight; |
179 |
ysiz = (long)maxwidth*cwidth >> 8; |
180 |
} else if (aspect > FTINY) { |
181 |
if (xsiz <= 0) |
182 |
xsiz = cheight*nlines; |
183 |
pictaspect = maxwidth/(256*nlines*aspect); |
184 |
if (pictaspect*xsiz < ysiz) |
185 |
ysiz = pictaspect*xsiz + 0.5; |
186 |
else |
187 |
xsiz = ysiz/pictaspect + 0.5; |
188 |
cheight = xsiz/nlines; |
189 |
cwidth = cheight/aspect; |
190 |
} else { |
191 |
if (xsiz <= 0) |
192 |
xsiz = cheight*nlines; |
193 |
pictaspect = (double)ysiz/xsiz; |
194 |
aspect = maxwidth/(256*nlines*pictaspect); |
195 |
cheight = xsiz/nlines; |
196 |
cwidth = cheight/aspect; |
197 |
} |
198 |
} |
199 |
if (xsiz % SSS) |
200 |
xsiz += SSS - xsiz%SSS; |
201 |
if (ysiz % SSS) |
202 |
ysiz += SSS - ysiz%SSS; |
203 |
xdim = (xsiz+7)/8; |
204 |
ourbitmap = (BYTE *)bmalloc(ysiz*xdim); |
205 |
if (ourbitmap == NULL) |
206 |
error(SYSTEM, "Out of memory in makemap"); |
207 |
bzero((char *)ourbitmap, ysiz*xdim); |
208 |
} |
209 |
|
210 |
|
211 |
gettext(fp) /* get text from a file */ |
212 |
FILE *fp; |
213 |
{ |
214 |
char buf[MAXLINE]; |
215 |
register LINE *curl; |
216 |
int len; |
217 |
|
218 |
maxline = 0; |
219 |
maxwidth = 0; |
220 |
nlines = 0; |
221 |
while (fgets(buf, MAXLINE, fp) != NULL) { |
222 |
curl = (LINE *)malloc(sizeof(LINE)); |
223 |
if (curl == NULL) |
224 |
goto memerr; |
225 |
len = strlen(buf); |
226 |
curl->s = (char *)malloc(len); |
227 |
curl->sp = (short *)malloc(sizeof(short)*len--); |
228 |
if (curl->s == NULL | curl->sp == NULL) |
229 |
goto memerr; |
230 |
if (len > maxline) |
231 |
maxline = len; |
232 |
strncpy(curl->s, buf, len); |
233 |
curl->s[len] = '\0'; |
234 |
if (spacing < -1./256.) |
235 |
len = squeeztext(curl->sp, curl->s, ourfont, |
236 |
(int)(spacing*-256.)); |
237 |
else if (spacing > 1./256.) |
238 |
len = proptext(curl->sp, curl->s, ourfont, |
239 |
(int)(spacing*256.), 3); |
240 |
else |
241 |
len = uniftext(curl->sp, curl->s, ourfont); |
242 |
if (len > maxwidth) |
243 |
maxwidth = len; |
244 |
curl->next = ourtext; |
245 |
ourtext = curl; |
246 |
nlines++; |
247 |
} |
248 |
return; |
249 |
memerr: |
250 |
error(SYSTEM, "Out of memory in gettext"); |
251 |
} |
252 |
|
253 |
|
254 |
arg_text(ac, av) /* get text from arguments */ |
255 |
int ac; |
256 |
char *av[]; |
257 |
{ |
258 |
register char *cp; |
259 |
|
260 |
ourtext = (LINE *)malloc(sizeof(LINE)); |
261 |
if (ourtext == NULL) |
262 |
goto memerr; |
263 |
ourtext->s = (char *)malloc(MAXLINE); |
264 |
if (ourtext->s == NULL) |
265 |
goto memerr; |
266 |
for (cp = ourtext->s; ac-- > 0; av++) { |
267 |
strcpy(cp, *av); |
268 |
cp += strlen(*av); |
269 |
*cp++ = ' '; |
270 |
} |
271 |
*--cp = '\0'; |
272 |
ourtext->next = NULL; |
273 |
maxline = strlen(ourtext->s); |
274 |
ourtext->sp = (short *)malloc(sizeof(short)*(maxline+1)); |
275 |
if (ourtext->sp == NULL) |
276 |
goto memerr; |
277 |
if (spacing < -1./256.) |
278 |
maxwidth = squeeztext(ourtext->sp, ourtext->s, ourfont, |
279 |
(int)(spacing*-256.)); |
280 |
else if (spacing > 1./256.) |
281 |
maxwidth = proptext(ourtext->sp, ourtext->s, ourfont, |
282 |
(int)(spacing*256.), 3); |
283 |
else |
284 |
maxwidth = uniftext(ourtext->sp, ourtext->s, ourfont); |
285 |
nlines = 1; |
286 |
return; |
287 |
memerr: |
288 |
error(SYSTEM, "Out of memory in arg_text"); |
289 |
} |
290 |
|
291 |
|
292 |
maptext() /* map our text */ |
293 |
{ |
294 |
register LINE *curl; |
295 |
int l, len; |
296 |
register int i, c; |
297 |
|
298 |
for (l = 0, curl = ourtext; curl != NULL; l += 256, curl = curl->next) { |
299 |
len = strlen(curl->s); c = 0; |
300 |
for (i = 0; i < len; i++) { |
301 |
c += curl->sp[i]; |
302 |
mapglyph(ourfont->fg[curl->s[i]&0xff], c, l); |
303 |
} |
304 |
} |
305 |
} |
306 |
|
307 |
|
308 |
mapglyph(gl, tx0, ty0) /* convert a glyph */ |
309 |
GLYPH *gl; |
310 |
int tx0, ty0; |
311 |
{ |
312 |
int n; |
313 |
register GORD *gp; |
314 |
int p0[2], p1[2]; |
315 |
|
316 |
if (gl == NULL) |
317 |
return; |
318 |
|
319 |
n = gl->nverts; |
320 |
gp = gvlist(gl); |
321 |
mapcoord(p0, gp[2*n-2]+tx0, gp[2*n-1]+ty0); |
322 |
while (n--) { |
323 |
mapcoord(p1, gp[0]+tx0, gp[1]+ty0); |
324 |
mapedge(p0[0], p0[1], p1[0]-p0[0], p1[1]-p0[1]); |
325 |
p0[0] = p1[0]; p0[1] = p1[1]; |
326 |
gp += 2; |
327 |
} |
328 |
} |
329 |
|
330 |
|
331 |
mapcoord(p, tx, ty) /* map text to picture coordinates */ |
332 |
int p[2], tx, ty; |
333 |
{ |
334 |
tx = (long)tx*cwidth >> 8; |
335 |
ty = (long)ty*cheight >> 8; |
336 |
|
337 |
switch (direct) { |
338 |
case 'r': /* right */ |
339 |
p[0] = tx; |
340 |
p[1] = ty; |
341 |
return; |
342 |
case 'u': /* up */ |
343 |
p[0] = xsiz-1-ty; |
344 |
p[1] = tx; |
345 |
return; |
346 |
case 'l': /* left */ |
347 |
p[0] = xsiz-1-tx; |
348 |
p[1] = ysiz-1-ty; |
349 |
return; |
350 |
case 'd': /* down */ |
351 |
p[0] = ty; |
352 |
p[1] = ysiz-1-tx; |
353 |
return; |
354 |
} |
355 |
} |
356 |
|
357 |
|
358 |
mapedge(x, y, run, rise) /* map an edge */ |
359 |
register int x, y; |
360 |
int run, rise; |
361 |
{ |
362 |
int xstep; |
363 |
int rise2, run2; |
364 |
int n; |
365 |
|
366 |
if (rise == 0) |
367 |
return; |
368 |
/* always draw up */ |
369 |
if (rise < 0) { |
370 |
x += run; |
371 |
y += rise; |
372 |
rise = -rise; |
373 |
run = -run; |
374 |
} |
375 |
if (run < 0) { |
376 |
xstep = -1; |
377 |
run = -run; |
378 |
} else |
379 |
xstep = 1; |
380 |
n = rise; |
381 |
run2 = rise2 = 0; |
382 |
while (n) |
383 |
if (rise2 >= run2) { |
384 |
tglbit(x, y); |
385 |
n--; |
386 |
y++; |
387 |
run2 += run; |
388 |
} else { |
389 |
x += xstep; |
390 |
rise2 += rise; |
391 |
} |
392 |
} |
393 |
|
394 |
|
395 |
writemap(fp) /* write out bitmap */ |
396 |
FILE *fp; |
397 |
{ |
398 |
COLR pixval[SSS*SSS+1]; /* possible pixel values */ |
399 |
COLOR ctmp0, ctmp1; |
400 |
double d; |
401 |
COLR *scanout; |
402 |
int x, y; |
403 |
register int i, j; |
404 |
int cnt; |
405 |
register int inglyph; |
406 |
|
407 |
fprintf(fp, "-Y %d +X %d\n", ysiz/SSS, xsiz/SSS); |
408 |
|
409 |
scanout = (COLR *)malloc(xsiz/SSS*sizeof(COLR)); |
410 |
if (scanout == NULL) |
411 |
error(SYSTEM, "Out of memory in writemap"); |
412 |
for (i = 0; i <= SSS*SSS; i++) { /* compute possible values */ |
413 |
copycolor(ctmp0, fgcolor); |
414 |
d = (double)i/(SSS*SSS); |
415 |
scalecolor(ctmp0, d); |
416 |
copycolor(ctmp1, bgcolor); |
417 |
d = 1.0 - d; |
418 |
scalecolor(ctmp1, d); |
419 |
addcolor(ctmp0, ctmp1); |
420 |
setcolr(pixval[i], colval(ctmp0,RED), |
421 |
colval(ctmp0,GRN), colval(ctmp0,BLU)); |
422 |
} |
423 |
for (y = ysiz/SSS-1; y >= 0; y--) { |
424 |
inglyph = 0; |
425 |
for (x = 0; x < xsiz/SSS; x++) { |
426 |
cnt = 0; |
427 |
for (j = 0; j < SSS; j++) |
428 |
for (i = 0; i < SSS; i++) { |
429 |
if (tstbit(x*SSS+i, y*SSS+j)) |
430 |
inglyph ^= 1<<j; |
431 |
if (inglyph & 1<<j) |
432 |
cnt++; |
433 |
} |
434 |
copycolr(scanout[x], pixval[cnt]); |
435 |
} |
436 |
if (fwritecolrs(scanout, xsiz/SSS, fp) < 0) { |
437 |
fprintf(stderr, "write error in writemap\n"); |
438 |
exit(1); |
439 |
} |
440 |
} |
441 |
free((void *)scanout); |
442 |
} |