1 |
greg |
1.1 |
/* Copyright (c) 1987 Regents of the University of California */ |
2 |
|
|
|
3 |
|
|
#ifndef lint |
4 |
|
|
static char SCCSid[] = "$SunId$ LBL"; |
5 |
|
|
#endif |
6 |
|
|
|
7 |
|
|
/* |
8 |
|
|
* ximage.c - driver for X-windows |
9 |
|
|
* |
10 |
|
|
* 4/30/87 |
11 |
|
|
* 3/3/88 Added calls to xraster & Paul Heckbert's ciq routines |
12 |
|
|
*/ |
13 |
|
|
|
14 |
|
|
#include "standard.h" |
15 |
|
|
|
16 |
|
|
#include <X/Xlib.h> |
17 |
|
|
#include <X/cursors/bcross.cursor> |
18 |
|
|
#include <X/cursors/bcross_mask.cursor> |
19 |
|
|
|
20 |
|
|
#include <sys/types.h> |
21 |
|
|
|
22 |
|
|
#include <ctype.h> |
23 |
|
|
|
24 |
|
|
#include "color.h" |
25 |
|
|
|
26 |
|
|
#include "xraster.h" |
27 |
|
|
|
28 |
|
|
#include "view.h" |
29 |
|
|
|
30 |
|
|
#include "pic.h" |
31 |
|
|
|
32 |
|
|
#define controlshift(e) (((XButtonEvent *)(e))->detail & (ShiftMask|ControlMask)) |
33 |
|
|
|
34 |
|
|
#define FONTNAME "9x15" /* text font we'll use */ |
35 |
|
|
|
36 |
|
|
#define CTRL(c) ('c'-'@') |
37 |
|
|
|
38 |
|
|
#define BORWIDTH 5 /* border width */ |
39 |
|
|
#define BARHEIGHT 25 /* menu bar size */ |
40 |
|
|
|
41 |
greg |
1.11 |
double gamcor = 2.2; /* gamma correction */ |
42 |
greg |
1.1 |
|
43 |
greg |
1.2 |
XRASTER *ourras = NULL; /* our stored raster image */ |
44 |
greg |
1.1 |
|
45 |
|
|
int dither = 1; /* dither colors? */ |
46 |
|
|
int fast = 0; /* keep picture in Pixmap? */ |
47 |
|
|
|
48 |
|
|
Window wind = 0; /* our output window */ |
49 |
|
|
Font fontid; /* our font */ |
50 |
|
|
|
51 |
|
|
int maxcolors = 0; /* maximum colors */ |
52 |
|
|
int greyscale = 0; /* in grey */ |
53 |
|
|
|
54 |
greg |
1.2 |
int scale = 0; /* scalefactor; power of two */ |
55 |
|
|
|
56 |
greg |
1.1 |
int xoff = 0; /* x image offset */ |
57 |
|
|
int yoff = 0; /* y image offset */ |
58 |
|
|
|
59 |
|
|
VIEW ourview = STDVIEW(0); /* image view parameters */ |
60 |
|
|
int gotview = 0; /* got parameters from file */ |
61 |
|
|
|
62 |
|
|
COLR *scanline; /* scan line buffer */ |
63 |
|
|
|
64 |
|
|
int xmax, ymax; /* picture resolution */ |
65 |
|
|
int width, height; /* window size */ |
66 |
|
|
char *fname = NULL; /* input file name */ |
67 |
|
|
FILE *fin = stdin; /* input file */ |
68 |
|
|
long *scanpos = NULL; /* scan line positions in file */ |
69 |
|
|
int cury = 0; /* current scan location */ |
70 |
|
|
|
71 |
|
|
double exposure = 1.0; /* exposure compensation used */ |
72 |
|
|
|
73 |
|
|
struct { |
74 |
|
|
int xmin, ymin, xsiz, ysiz; |
75 |
|
|
} box = {0, 0, 0, 0}; /* current box */ |
76 |
|
|
|
77 |
|
|
char *geometry = NULL; /* geometry specification */ |
78 |
|
|
|
79 |
|
|
char *progname; |
80 |
|
|
|
81 |
|
|
char errmsg[128]; |
82 |
|
|
|
83 |
|
|
extern long ftell(); |
84 |
|
|
|
85 |
|
|
extern char *malloc(), *calloc(); |
86 |
|
|
|
87 |
greg |
1.2 |
extern double atof(), pow(), log(); |
88 |
greg |
1.1 |
|
89 |
|
|
|
90 |
|
|
main(argc, argv) |
91 |
|
|
int argc; |
92 |
|
|
char *argv[]; |
93 |
|
|
{ |
94 |
|
|
int headline(); |
95 |
|
|
int i; |
96 |
|
|
|
97 |
|
|
progname = argv[0]; |
98 |
|
|
|
99 |
|
|
for (i = 1; i < argc; i++) |
100 |
|
|
if (argv[i][0] == '-') |
101 |
|
|
switch (argv[i][1]) { |
102 |
|
|
case 'c': |
103 |
|
|
maxcolors = atoi(argv[++i]); |
104 |
|
|
break; |
105 |
|
|
case 'b': |
106 |
|
|
greyscale = !greyscale; |
107 |
|
|
break; |
108 |
|
|
case 'm': |
109 |
|
|
maxcolors = 2; |
110 |
|
|
break; |
111 |
|
|
case 'd': |
112 |
|
|
dither = !dither; |
113 |
|
|
break; |
114 |
|
|
case 'f': |
115 |
|
|
fast = !fast; |
116 |
|
|
break; |
117 |
greg |
1.2 |
case 'e': |
118 |
|
|
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
119 |
|
|
goto userr; |
120 |
|
|
scale = atoi(argv[++i]); |
121 |
|
|
break; |
122 |
greg |
1.1 |
case 'g': |
123 |
|
|
gamcor = atof(argv[++i]); |
124 |
|
|
break; |
125 |
|
|
default: |
126 |
|
|
goto userr; |
127 |
|
|
} |
128 |
|
|
else if (argv[i][0] == '=') |
129 |
|
|
geometry = argv[i]; |
130 |
|
|
else |
131 |
|
|
break; |
132 |
|
|
|
133 |
|
|
if (argc-i == 1) { |
134 |
|
|
fname = argv[i]; |
135 |
|
|
fin = fopen(fname, "r"); |
136 |
|
|
if (fin == NULL) { |
137 |
|
|
sprintf(errmsg, "can't open file \"%s\"", fname); |
138 |
|
|
quiterr(errmsg); |
139 |
|
|
} |
140 |
greg |
1.6 |
} |
141 |
greg |
1.1 |
/* get header */ |
142 |
|
|
getheader(fin, headline); |
143 |
|
|
/* get picture dimensions */ |
144 |
greg |
1.9 |
if (fgetresolu(&xmax, &ymax, fin) != (YMAJOR|YDECR)) |
145 |
greg |
1.1 |
quiterr("bad picture size"); |
146 |
|
|
/* set view parameters */ |
147 |
greg |
1.13 |
if (gotview) { |
148 |
|
|
ourview.hresolu = xmax; |
149 |
|
|
ourview.vresolu = ymax; |
150 |
greg |
1.1 |
if (setview(&ourview) != NULL) |
151 |
|
|
gotview = 0; |
152 |
greg |
1.13 |
} |
153 |
greg |
1.1 |
if ((scanline = (COLR *)malloc(xmax*sizeof(COLR))) == NULL) |
154 |
|
|
quiterr("out of memory"); |
155 |
|
|
|
156 |
|
|
init(); /* get file and open window */ |
157 |
|
|
|
158 |
|
|
for ( ; ; ) |
159 |
|
|
getevent(); /* main loop */ |
160 |
|
|
userr: |
161 |
|
|
fprintf(stderr, |
162 |
greg |
1.2 |
"Usage: %s [=geometry][-b][-m][-d][-f][-c ncolors][-e +/-stops] file\n", |
163 |
greg |
1.1 |
progname); |
164 |
|
|
quit(1); |
165 |
|
|
} |
166 |
|
|
|
167 |
|
|
|
168 |
|
|
headline(s) /* get relevant info from header */ |
169 |
|
|
char *s; |
170 |
|
|
{ |
171 |
greg |
1.4 |
static char *altname[] = {"rview","rpict",VIEWSTR,NULL}; |
172 |
greg |
1.1 |
register char **an; |
173 |
|
|
|
174 |
|
|
if (!strncmp(s, "EXPOSURE=", 9)) |
175 |
|
|
exposure *= atof(s+9); |
176 |
|
|
else |
177 |
|
|
for (an = altname; *an != NULL; an++) |
178 |
|
|
if (!strncmp(*an, s, strlen(*an))) { |
179 |
|
|
if (sscanview(&ourview, s+strlen(*an)) == 0) |
180 |
|
|
gotview++; |
181 |
|
|
return; |
182 |
|
|
} |
183 |
|
|
} |
184 |
|
|
|
185 |
|
|
|
186 |
|
|
char * |
187 |
|
|
sskip(s) /* skip a word */ |
188 |
|
|
register char *s; |
189 |
|
|
{ |
190 |
|
|
while (isspace(*s)) s++; |
191 |
|
|
while (*s && !isspace(*s)) s++; |
192 |
|
|
return(s); |
193 |
|
|
} |
194 |
|
|
|
195 |
|
|
|
196 |
|
|
init() /* get data and open window */ |
197 |
|
|
{ |
198 |
|
|
register int i; |
199 |
|
|
OpaqueFrame mainframe; |
200 |
|
|
char defgeom[32]; |
201 |
|
|
|
202 |
|
|
if (fname != NULL) { |
203 |
|
|
scanpos = (long *)malloc(ymax*sizeof(long)); |
204 |
|
|
if (scanpos == NULL) |
205 |
|
|
goto memerr; |
206 |
|
|
for (i = 0; i < ymax; i++) |
207 |
|
|
scanpos[i] = -1; |
208 |
|
|
} |
209 |
|
|
if (XOpenDisplay(NULL) == NULL) |
210 |
|
|
quiterr("can't open display; DISPLAY variable set?"); |
211 |
|
|
#ifdef notdef |
212 |
|
|
if (DisplayWidth() - 2*BORWIDTH < xmax || |
213 |
|
|
DisplayHeight() - 2*BORWIDTH - BARHEIGHT < ymax) |
214 |
|
|
quiterr("resolution mismatch"); |
215 |
|
|
#endif |
216 |
|
|
if (maxcolors == 0) { /* get number of available colors */ |
217 |
|
|
maxcolors = 1<<DisplayPlanes(); |
218 |
|
|
if (maxcolors > 4) maxcolors -= 2; |
219 |
|
|
} |
220 |
|
|
/* store image */ |
221 |
greg |
1.2 |
getras(); |
222 |
|
|
|
223 |
greg |
1.1 |
mainframe.bdrwidth = BORWIDTH; |
224 |
|
|
mainframe.border = WhitePixmap; |
225 |
|
|
mainframe.background = BlackPixmap; |
226 |
|
|
sprintf(defgeom, "=%dx%d+0+22", xmax, ymax); |
227 |
|
|
wind = XCreate("Radiance Image", progname, geometry, defgeom, |
228 |
|
|
&mainframe, 16, 16); |
229 |
|
|
if (wind == 0) |
230 |
|
|
quiterr("can't create window"); |
231 |
|
|
width = mainframe.width; |
232 |
|
|
height = mainframe.height; |
233 |
|
|
fontid = XGetFont(FONTNAME); |
234 |
|
|
if (fontid == 0) |
235 |
|
|
quiterr("can't get font"); |
236 |
|
|
XStoreName(wind, fname == NULL ? progname : fname); |
237 |
|
|
XDefineCursor(wind, XCreateCursor(bcross_width, bcross_height, |
238 |
|
|
bcross_bits, bcross_mask_bits, |
239 |
|
|
bcross_x_hot, bcross_y_hot, |
240 |
|
|
BlackPixel, WhitePixel, GXcopy)); |
241 |
|
|
XSelectInput(wind, ButtonPressed|ButtonReleased|UnmapWindow |
242 |
|
|
|RightDownMotion|MiddleDownMotion|LeftDownMotion |
243 |
|
|
|KeyPressed|ExposeWindow|ExposeRegion); |
244 |
|
|
XMapWindow(wind); |
245 |
|
|
return; |
246 |
|
|
memerr: |
247 |
|
|
quiterr("out of memory"); |
248 |
|
|
} |
249 |
|
|
|
250 |
|
|
|
251 |
|
|
quiterr(err) /* print message and exit */ |
252 |
|
|
char *err; |
253 |
|
|
{ |
254 |
|
|
if (err != NULL) |
255 |
|
|
fprintf(stderr, "%s: %s\n", progname, err); |
256 |
|
|
|
257 |
|
|
exit(err == NULL ? 0 : 1); |
258 |
|
|
} |
259 |
|
|
|
260 |
|
|
|
261 |
|
|
eputs(s) |
262 |
|
|
char *s; |
263 |
|
|
{ |
264 |
|
|
fputs(s, stderr); |
265 |
|
|
} |
266 |
|
|
|
267 |
|
|
|
268 |
|
|
quit(code) |
269 |
|
|
int code; |
270 |
|
|
{ |
271 |
|
|
exit(code); |
272 |
|
|
} |
273 |
|
|
|
274 |
|
|
|
275 |
greg |
1.2 |
getras() /* get raster file */ |
276 |
|
|
{ |
277 |
|
|
colormap ourmap; |
278 |
|
|
|
279 |
|
|
ourras = (XRASTER *)calloc(1, sizeof(XRASTER)); |
280 |
|
|
if (ourras == NULL) |
281 |
|
|
goto memerr; |
282 |
|
|
ourras->width = xmax; |
283 |
|
|
ourras->height = ymax; |
284 |
|
|
if (maxcolors <= 2) { /* monochrome */ |
285 |
|
|
ourras->data.m = (unsigned short *)malloc(BitmapSize(xmax,ymax)); |
286 |
|
|
if (ourras->data.m == NULL) |
287 |
|
|
goto memerr; |
288 |
|
|
getmono(); |
289 |
|
|
} else { |
290 |
|
|
ourras->data.bz = (unsigned char *)malloc(BZPixmapSize(xmax,ymax)); |
291 |
|
|
if (ourras->data.bz == NULL) |
292 |
|
|
goto memerr; |
293 |
|
|
if (greyscale) |
294 |
|
|
biq(dither,maxcolors,1,ourmap); |
295 |
|
|
else |
296 |
|
|
ciq(dither,maxcolors,1,ourmap); |
297 |
|
|
if (init_rcolors(ourras, ourmap) == 0) |
298 |
|
|
goto memerr; |
299 |
|
|
} |
300 |
|
|
return; |
301 |
|
|
memerr: |
302 |
|
|
quit("out of memory"); |
303 |
|
|
} |
304 |
|
|
|
305 |
|
|
|
306 |
greg |
1.1 |
getevent() /* process the next event */ |
307 |
|
|
{ |
308 |
|
|
WindowInfo info; |
309 |
|
|
XEvent e; |
310 |
|
|
|
311 |
|
|
XNextEvent(&e); |
312 |
|
|
switch (e.type) { |
313 |
|
|
case KeyPressed: |
314 |
|
|
docom(&e); |
315 |
|
|
break; |
316 |
|
|
case ExposeWindow: |
317 |
|
|
XQueryWindow(wind, &info); /* in case resized */ |
318 |
|
|
width = info.width; |
319 |
|
|
height = info.height; |
320 |
|
|
/* fall through */ |
321 |
|
|
case ExposeRegion: |
322 |
|
|
fixwindow(&e); |
323 |
|
|
break; |
324 |
|
|
case UnmapWindow: |
325 |
greg |
1.2 |
unmap_rcolors(ourras); |
326 |
greg |
1.1 |
break; |
327 |
|
|
case ButtonPressed: |
328 |
|
|
if (controlshift(&e)) |
329 |
|
|
moveimage(&e); |
330 |
|
|
else |
331 |
|
|
getbox(&e); |
332 |
|
|
break; |
333 |
|
|
} |
334 |
|
|
} |
335 |
|
|
|
336 |
|
|
|
337 |
|
|
fixwindow(eexp) /* fix new or stepped-on window */ |
338 |
|
|
XExposeEvent *eexp; |
339 |
|
|
{ |
340 |
|
|
redraw(eexp->x, eexp->y, eexp->width, eexp->height); |
341 |
|
|
} |
342 |
|
|
|
343 |
|
|
|
344 |
|
|
redraw(x, y, w, h) /* redraw section of window */ |
345 |
|
|
int x, y; |
346 |
|
|
int w, h; |
347 |
|
|
{ |
348 |
greg |
1.7 |
if (ourras->ncolors && map_rcolors(ourras) == NULL) { |
349 |
greg |
1.2 |
fprintf(stderr, "%s: cannot allocate colors\n", progname); |
350 |
|
|
return(-1); |
351 |
|
|
} |
352 |
greg |
1.1 |
if (fast) |
353 |
greg |
1.2 |
make_rpixmap(ourras); |
354 |
|
|
return(patch_raster(wind,x-xoff,y-yoff,x,y,w,h,ourras) ? 0 : -1); |
355 |
greg |
1.1 |
} |
356 |
|
|
|
357 |
|
|
|
358 |
|
|
docom(ekey) /* execute command */ |
359 |
|
|
XKeyEvent *ekey; |
360 |
|
|
{ |
361 |
|
|
char buf[80]; |
362 |
|
|
COLOR cval; |
363 |
|
|
char *cp; |
364 |
|
|
int n; |
365 |
greg |
1.2 |
double comp; |
366 |
greg |
1.1 |
FVECT rorg, rdir; |
367 |
|
|
|
368 |
|
|
cp = XLookupMapping(ekey, &n); |
369 |
|
|
if (n == 0) |
370 |
|
|
return(0); |
371 |
|
|
switch (*cp) { /* interpret command */ |
372 |
|
|
case 'q': |
373 |
|
|
case CTRL(D): /* quiterr */ |
374 |
|
|
quit(0); |
375 |
|
|
case '\n': |
376 |
|
|
case '\r': |
377 |
|
|
case 'l': |
378 |
|
|
case 'c': /* value */ |
379 |
|
|
if (avgbox(cval) == -1) |
380 |
|
|
return(-1); |
381 |
|
|
switch (*cp) { |
382 |
|
|
case '\n': |
383 |
|
|
case '\r': /* radiance */ |
384 |
|
|
sprintf(buf, "%-3g", intens(cval)/exposure); |
385 |
|
|
break; |
386 |
|
|
case 'l': /* luminance */ |
387 |
|
|
sprintf(buf, "%-3gL", bright(cval)*683.0/exposure); |
388 |
|
|
break; |
389 |
|
|
case 'c': /* color */ |
390 |
greg |
1.2 |
comp = pow(2.0, (double)scale); |
391 |
greg |
1.1 |
sprintf(buf, "(%.2f,%.2f,%.2f)", |
392 |
greg |
1.2 |
colval(cval,RED)*comp, |
393 |
|
|
colval(cval,GRN)*comp, |
394 |
|
|
colval(cval,BLU)*comp); |
395 |
greg |
1.1 |
break; |
396 |
|
|
} |
397 |
|
|
XText(wind, box.xmin, box.ymin, buf, strlen(buf), |
398 |
|
|
fontid, BlackPixel, WhitePixel); |
399 |
|
|
return(0); |
400 |
|
|
case 'p': /* position */ |
401 |
|
|
sprintf(buf, "(%d,%d)", ekey->x-xoff, ymax-1-ekey->y+yoff); |
402 |
|
|
XText(wind, ekey->x, ekey->y, buf, strlen(buf), |
403 |
|
|
fontid, BlackPixel, WhitePixel); |
404 |
|
|
return(0); |
405 |
|
|
case 't': /* trace */ |
406 |
|
|
if (!gotview) { |
407 |
|
|
XFeep(0); |
408 |
|
|
return(-1); |
409 |
|
|
} |
410 |
|
|
rayview(rorg, rdir, &ourview, |
411 |
|
|
ekey->x-xoff + .5, ymax-1-ekey->y+yoff + .5); |
412 |
|
|
printf("%e %e %e ", rorg[0], rorg[1], rorg[2]); |
413 |
|
|
printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]); |
414 |
|
|
fflush(stdout); |
415 |
|
|
return(0); |
416 |
greg |
1.2 |
case '=': /* adjust exposure */ |
417 |
|
|
if (avgbox(cval) == -1) |
418 |
|
|
return(-1); |
419 |
|
|
n = log(.5/bright(cval))/.69315 - scale; /* truncate */ |
420 |
greg |
1.5 |
if (n == 0) |
421 |
greg |
1.2 |
return(0); |
422 |
|
|
scale_rcolors(ourras, pow(2.0, (double)n)); |
423 |
|
|
scale += n; |
424 |
|
|
sprintf(buf, "%+d", scale); |
425 |
|
|
XText(wind, box.xmin, box.ymin, buf, strlen(buf), |
426 |
|
|
fontid, BlackPixel, WhitePixel); |
427 |
|
|
XFlush(); |
428 |
|
|
free_raster(ourras); |
429 |
|
|
getras(); |
430 |
greg |
1.3 |
/* fall through */ |
431 |
greg |
1.1 |
case CTRL(R): /* redraw */ |
432 |
greg |
1.6 |
case CTRL(L): |
433 |
greg |
1.1 |
XClear(wind); |
434 |
|
|
return(redraw(0, 0, width, height)); |
435 |
|
|
case ' ': /* clear */ |
436 |
|
|
return(redraw(box.xmin, box.ymin, box.xsiz, box.ysiz)); |
437 |
|
|
default: |
438 |
|
|
XFeep(0); |
439 |
|
|
return(-1); |
440 |
|
|
} |
441 |
|
|
} |
442 |
|
|
|
443 |
|
|
|
444 |
|
|
moveimage(ep) /* shift the image */ |
445 |
|
|
XButtonEvent *ep; |
446 |
|
|
{ |
447 |
|
|
XButtonEvent eb; |
448 |
|
|
|
449 |
|
|
XMaskEvent(ButtonReleased, &eb); |
450 |
|
|
xoff += eb.x - ep->x; |
451 |
|
|
yoff += eb.y - ep->y; |
452 |
|
|
XClear(wind); |
453 |
|
|
return(redraw(0, 0, width, height)); |
454 |
|
|
} |
455 |
|
|
|
456 |
|
|
|
457 |
|
|
getbox(ebut) /* get new box */ |
458 |
|
|
XButtonEvent *ebut; |
459 |
|
|
{ |
460 |
|
|
union { |
461 |
|
|
XEvent e; |
462 |
|
|
XButtonEvent b; |
463 |
|
|
XMouseMovedEvent m; |
464 |
|
|
} e; |
465 |
|
|
|
466 |
|
|
XMaskEvent(ButtonReleased|MouseMoved, &e.e); |
467 |
|
|
while (e.e.type == MouseMoved) { |
468 |
|
|
revbox(ebut->x, ebut->y, box.xmin = e.m.x, box.ymin = e.m.y); |
469 |
|
|
XMaskEvent(ButtonReleased|MouseMoved, &e.e); |
470 |
|
|
revbox(ebut->x, ebut->y, box.xmin, box.ymin); |
471 |
|
|
} |
472 |
|
|
box.xmin = e.b.x<0 ? 0 : (e.b.x>=width ? width-1 : e.b.x); |
473 |
|
|
box.ymin = e.b.y<0 ? 0 : (e.b.y>=height ? height-1 : e.b.y); |
474 |
|
|
if (box.xmin > ebut->x) { |
475 |
|
|
box.xsiz = box.xmin - ebut->x + 1; |
476 |
|
|
box.xmin = ebut->x; |
477 |
|
|
} else { |
478 |
|
|
box.xsiz = ebut->x - box.xmin + 1; |
479 |
|
|
} |
480 |
|
|
if (box.ymin > ebut->y) { |
481 |
|
|
box.ysiz = box.ymin - ebut->y + 1; |
482 |
|
|
box.ymin = ebut->y; |
483 |
|
|
} else { |
484 |
|
|
box.ysiz = ebut->y - box.ymin + 1; |
485 |
|
|
} |
486 |
|
|
} |
487 |
|
|
|
488 |
|
|
|
489 |
|
|
revbox(x0, y0, x1, y1) /* draw box with reversed lines */ |
490 |
|
|
int x0, y0, x1, y1; |
491 |
|
|
{ |
492 |
|
|
XLine(wind, x0, y0, x1, y0, 1, 1, 0, GXinvert, AllPlanes); |
493 |
|
|
XLine(wind, x0, y1, x1, y1, 1, 1, 0, GXinvert, AllPlanes); |
494 |
|
|
XLine(wind, x0, y0, x0, y1, 1, 1, 0, GXinvert, AllPlanes); |
495 |
|
|
XLine(wind, x1, y0, x1, y1, 1, 1, 0, GXinvert, AllPlanes); |
496 |
|
|
} |
497 |
|
|
|
498 |
|
|
|
499 |
|
|
avgbox(clr) /* average color over current box */ |
500 |
|
|
COLOR clr; |
501 |
|
|
{ |
502 |
|
|
int left, right, top, bottom; |
503 |
|
|
int y; |
504 |
|
|
double d; |
505 |
|
|
COLOR ctmp; |
506 |
|
|
register int x; |
507 |
|
|
|
508 |
|
|
setcolor(clr, 0.0, 0.0, 0.0); |
509 |
|
|
left = box.xmin - xoff; |
510 |
|
|
right = left + box.xsiz; |
511 |
|
|
if (left < 0) |
512 |
|
|
left = 0; |
513 |
|
|
if (right > xmax) |
514 |
|
|
right = xmax; |
515 |
|
|
if (left >= right) |
516 |
|
|
return(-1); |
517 |
|
|
top = box.ymin - yoff; |
518 |
|
|
bottom = top + box.ysiz; |
519 |
|
|
if (top < 0) |
520 |
|
|
top = 0; |
521 |
|
|
if (bottom > ymax) |
522 |
|
|
bottom = ymax; |
523 |
|
|
if (top >= bottom) |
524 |
|
|
return(-1); |
525 |
|
|
for (y = top; y < bottom; y++) { |
526 |
|
|
if (getscan(y) == -1) |
527 |
|
|
return(-1); |
528 |
|
|
for (x = left; x < right; x++) { |
529 |
|
|
colr_color(ctmp, scanline[x]); |
530 |
|
|
addcolor(clr, ctmp); |
531 |
|
|
} |
532 |
|
|
} |
533 |
|
|
d = 1.0/((right-left)*(bottom-top)); |
534 |
|
|
scalecolor(clr, d); |
535 |
|
|
return(0); |
536 |
|
|
} |
537 |
|
|
|
538 |
|
|
|
539 |
|
|
getmono() /* get monochrome data */ |
540 |
|
|
{ |
541 |
|
|
register unsigned short *dp; |
542 |
|
|
register int x, err; |
543 |
|
|
int y; |
544 |
|
|
rgbpixel *inline; |
545 |
|
|
short *cerr; |
546 |
|
|
|
547 |
|
|
if ((inline = (rgbpixel *)malloc(xmax*sizeof(rgbpixel))) == NULL |
548 |
|
|
|| (cerr = (short *)calloc(xmax,sizeof(short))) == NULL) |
549 |
|
|
quit("out of memory in getmono"); |
550 |
greg |
1.2 |
dp = ourras->data.m - 1; |
551 |
greg |
1.1 |
for (y = 0; y < ymax; y++) { |
552 |
|
|
picreadline3(y, inline); |
553 |
|
|
err = 0; |
554 |
|
|
for (x = 0; x < xmax; x++) { |
555 |
|
|
if (!(x&0xf)) |
556 |
|
|
*++dp = 0; |
557 |
|
|
err += rgb_bright(&inline[x]) + cerr[x]; |
558 |
|
|
if (err > 127) |
559 |
|
|
err -= 255; |
560 |
|
|
else |
561 |
|
|
*dp |= 1<<(x&0xf); |
562 |
|
|
cerr[x] = err >>= 1; |
563 |
|
|
} |
564 |
|
|
} |
565 |
|
|
free((char *)inline); |
566 |
|
|
free((char *)cerr); |
567 |
|
|
} |
568 |
|
|
|
569 |
|
|
|
570 |
greg |
1.2 |
init_rcolors(xr, cmap) /* (re)assign color values */ |
571 |
greg |
1.1 |
register XRASTER *xr; |
572 |
|
|
colormap cmap; |
573 |
|
|
{ |
574 |
|
|
register int i; |
575 |
|
|
register unsigned char *p; |
576 |
|
|
|
577 |
|
|
xr->pmap = (int *)malloc(256*sizeof(int)); |
578 |
|
|
if (xr->pmap == NULL) |
579 |
|
|
return(0); |
580 |
|
|
xr->cdefs = (Color *)malloc(256*sizeof(Color)); |
581 |
|
|
if (xr->cdefs == NULL) |
582 |
|
|
return(0); |
583 |
|
|
for (i = 0; i < 256; i++) |
584 |
|
|
xr->pmap[i] = -1; |
585 |
|
|
xr->ncolors = 0; |
586 |
|
|
for (p = xr->data.bz, i = BZPixmapSize(xr->width,xr->height); i--; p++) |
587 |
|
|
if (xr->pmap[*p] == -1) { |
588 |
|
|
xr->cdefs[xr->ncolors].red = cmap[0][*p] << 8; |
589 |
|
|
xr->cdefs[xr->ncolors].green = cmap[1][*p] << 8; |
590 |
|
|
xr->cdefs[xr->ncolors].blue = cmap[2][*p] << 8; |
591 |
|
|
xr->cdefs[xr->ncolors].pixel = *p; |
592 |
|
|
xr->pmap[*p] = xr->ncolors++; |
593 |
|
|
} |
594 |
|
|
xr->cdefs = (Color *)realloc((char *)xr->cdefs, xr->ncolors*sizeof(Color)); |
595 |
|
|
if (xr->cdefs == NULL) |
596 |
|
|
return(0); |
597 |
|
|
return(1); |
598 |
|
|
} |
599 |
|
|
|
600 |
|
|
|
601 |
greg |
1.2 |
scale_rcolors(xr, sf) /* scale color map */ |
602 |
|
|
register XRASTER *xr; |
603 |
|
|
double sf; |
604 |
|
|
{ |
605 |
|
|
register int i; |
606 |
|
|
int maxv; |
607 |
|
|
|
608 |
|
|
sf = pow(sf, 1.0/gamcor); |
609 |
|
|
maxv = (1<<16) / sf; |
610 |
|
|
|
611 |
|
|
for (i = xr->ncolors; i--; ) { |
612 |
|
|
xr->cdefs[i].red = xr->cdefs[i].red >= maxv ? |
613 |
|
|
(1<<16)-1 : |
614 |
|
|
xr->cdefs[i].red * sf; |
615 |
|
|
xr->cdefs[i].green = xr->cdefs[i].green >= maxv ? |
616 |
|
|
(1<<16)-1 : |
617 |
|
|
xr->cdefs[i].green * sf; |
618 |
|
|
xr->cdefs[i].blue = xr->cdefs[i].blue >= maxv ? |
619 |
|
|
(1<<16)-1 : |
620 |
|
|
xr->cdefs[i].blue * sf; |
621 |
|
|
} |
622 |
|
|
if (xr->pixels != NULL) |
623 |
|
|
XStoreColors(xr->ncolors, xr->cdefs); |
624 |
|
|
} |
625 |
|
|
|
626 |
|
|
|
627 |
greg |
1.1 |
getscan(y) |
628 |
|
|
int y; |
629 |
|
|
{ |
630 |
|
|
if (y != cury) { |
631 |
|
|
if (scanpos == NULL || scanpos[y] == -1) |
632 |
|
|
return(-1); |
633 |
|
|
if (fseek(fin, scanpos[y], 0) == -1) |
634 |
|
|
quit("fseek error"); |
635 |
|
|
cury = y; |
636 |
|
|
} else if (scanpos != NULL) |
637 |
|
|
scanpos[y] = ftell(fin); |
638 |
|
|
|
639 |
|
|
if (freadcolrs(scanline, xmax, fin) < 0) |
640 |
|
|
quiterr("read error"); |
641 |
|
|
|
642 |
|
|
cury++; |
643 |
|
|
return(0); |
644 |
|
|
} |
645 |
|
|
|
646 |
|
|
|
647 |
|
|
picreadline3(y, l3) /* read in 3-byte scanline */ |
648 |
|
|
int y; |
649 |
|
|
register rgbpixel *l3; |
650 |
|
|
{ |
651 |
greg |
1.12 |
register int i; |
652 |
|
|
/* read scanline */ |
653 |
greg |
1.1 |
if (getscan(y) < 0) |
654 |
|
|
quiterr("cannot seek for picreadline"); |
655 |
|
|
/* convert scanline */ |
656 |
greg |
1.14 |
if (scale != 0) |
657 |
|
|
for (i = 0; i < xmax; i++) |
658 |
|
|
if (scanline[i][EXP]+scale >= 0) |
659 |
|
|
scanline[i][EXP] += scale; |
660 |
greg |
1.12 |
normcolrs(scanline, xmax); |
661 |
|
|
for (i = 0; i < xmax; i++) { |
662 |
|
|
l3[i].r = scanline[i][RED]; |
663 |
|
|
l3[i].g = scanline[i][GRN]; |
664 |
|
|
l3[i].b = scanline[i][BLU]; |
665 |
greg |
1.1 |
} |
666 |
|
|
} |
667 |
|
|
|
668 |
|
|
|
669 |
|
|
picwriteline(y, l) /* add 8-bit scanline to image */ |
670 |
|
|
int y; |
671 |
|
|
pixel *l; |
672 |
|
|
{ |
673 |
greg |
1.2 |
bcopy(l, ourras->data.bz+BZPixmapSize(xmax,y), BZPixmapSize(xmax,1)); |
674 |
greg |
1.1 |
} |
675 |
|
|
|
676 |
|
|
|
677 |
greg |
1.8 |
picreadcm(map) /* do gamma correction */ |
678 |
greg |
1.1 |
colormap map; |
679 |
|
|
{ |
680 |
|
|
extern double pow(); |
681 |
|
|
register int i, val; |
682 |
|
|
|
683 |
|
|
for (i = 0; i < 256; i++) { |
684 |
|
|
val = pow(i/256.0, 1.0/gamcor) * 256.0; |
685 |
|
|
map[0][i] = map[1][i] = map[2][i] = val; |
686 |
|
|
} |
687 |
|
|
} |
688 |
|
|
|
689 |
|
|
|
690 |
|
|
picwritecm(map) /* handled elsewhere */ |
691 |
|
|
colormap map; |
692 |
|
|
{ |
693 |
greg |
1.2 |
#ifdef DEBUG |
694 |
|
|
register int i; |
695 |
|
|
|
696 |
|
|
for (i = 0; i < 256; i++) |
697 |
|
|
printf("%d %d %d\n", map[0][i],map[1][i],map[2][i]); |
698 |
|
|
#endif |
699 |
greg |
1.1 |
} |