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< |
/* Copyright (c) 1990 Regents of the University of California */ |
| 1 |
> |
/* Copyright (c) 1991 Regents of the University of California */ |
| 2 |
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| 3 |
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#ifndef lint |
| 4 |
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static char SCCSid[] = "$SunId$ LBL"; |
| 30 |
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#include "pic.h" |
| 31 |
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#include "x11raster.h" |
| 32 |
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#include "random.h" |
| 33 |
+ |
#include "resolu.h" |
| 34 |
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|
| 35 |
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#define FONTNAME "8x13" /* text font we'll use */ |
| 36 |
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|
| 37 |
< |
#define CTRL(c) ('c'-'@') |
| 37 |
> |
#define CTRL(c) ((c)-'@') |
| 38 |
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|
| 39 |
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#define BORWIDTH 5 /* border width */ |
| 40 |
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|
| 41 |
+ |
#define ICONSIZ (8*10) /* maximum icon dimension (even 8) */ |
| 42 |
+ |
|
| 43 |
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#define ourscreen DefaultScreen(thedisplay) |
| 44 |
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#define ourblack BlackPixel(thedisplay,ourscreen) |
| 45 |
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#define ourwhite WhitePixel(thedisplay,ourscreen) |
| 46 |
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#define ourroot RootWindow(thedisplay,ourscreen) |
| 47 |
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#define ourgc DefaultGC(thedisplay,ourscreen) |
| 48 |
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|
| 49 |
+ |
#define revline(x0,y0,x1,y1) XDrawLine(thedisplay,wind,revgc,x0,y0,x1,y1) |
| 50 |
+ |
|
| 51 |
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#define redraw(x,y,w,h) patch_raster(wind,(x)-xoff,(y)-yoff,x,y,w,h,ourras) |
| 52 |
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|
| 53 |
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double gamcor = 2.2; /* gamma correction */ |
| 71 |
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|
| 72 |
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COLR *scanline; /* scan line buffer */ |
| 73 |
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|
| 74 |
< |
int xmax, ymax; /* picture resolution */ |
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> |
RESOLU inpres; /* input resolution and ordering */ |
| 75 |
> |
int xmax, ymax; /* picture dimensions */ |
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int width, height; /* window size */ |
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char *fname = NULL; /* input file name */ |
| 78 |
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FILE *fin = stdin; /* input file */ |
| 81 |
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|
| 82 |
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double exposure = 1.0; /* exposure compensation used */ |
| 83 |
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|
| 84 |
+ |
int wrongformat = 0; /* input in another format? */ |
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|
| 86 |
+ |
GC revgc; /* graphics context with GXinvert */ |
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+ |
|
| 88 |
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XRASTER *ourras; /* our stored image */ |
| 89 |
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unsigned char *ourdata; /* our image data */ |
| 90 |
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|
| 94 |
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|
| 95 |
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char *geometry = NULL; /* geometry specification */ |
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|
| 97 |
+ |
char icondata[ICONSIZ*ICONSIZ/8]; /* icon bitmap data */ |
| 98 |
+ |
int iconwidth = 0, iconheight = 0; |
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+ |
|
| 100 |
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char *progname; |
| 101 |
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|
| 102 |
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char errmsg[128]; |
| 105 |
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|
| 106 |
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extern char *malloc(), *calloc(); |
| 107 |
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|
| 108 |
< |
extern double atof(), pow(), log(); |
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> |
extern double pow(), log(); |
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|
| 110 |
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Display *thedisplay; |
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|
| 150 |
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default: |
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goto userr; |
| 152 |
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} |
| 153 |
+ |
else if (argv[i][0] == '=') |
| 154 |
+ |
geometry = argv[i]; |
| 155 |
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else |
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break; |
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|
| 158 |
< |
if (argc-i == 1) { |
| 158 |
> |
if (i == argc-1) { |
| 159 |
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fname = argv[i]; |
| 160 |
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fin = fopen(fname, "r"); |
| 161 |
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if (fin == NULL) { |
| 162 |
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sprintf(errmsg, "can't open file \"%s\"", fname); |
| 163 |
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quiterr(errmsg); |
| 164 |
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} |
| 165 |
< |
} |
| 165 |
> |
} else if (i != argc) |
| 166 |
> |
goto userr; |
| 167 |
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/* get header */ |
| 168 |
< |
getheader(fin, headline); |
| 168 |
> |
getheader(fin, headline, NULL); |
| 169 |
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/* get picture dimensions */ |
| 170 |
< |
if (fgetresolu(&xmax, &ymax, fin) != (YMAJOR|YDECR)) |
| 171 |
< |
quiterr("bad picture size"); |
| 170 |
> |
if (wrongformat || !fgetsresolu(&inpres, fin)) |
| 171 |
> |
quiterr("bad picture format"); |
| 172 |
> |
xmax = scanlen(&inpres); |
| 173 |
> |
ymax = numscans(&inpres); |
| 174 |
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/* set view parameters */ |
| 175 |
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if (gotview && setview(&ourview) != NULL) |
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gotview = 0; |
| 192 |
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headline(s) /* get relevant info from header */ |
| 193 |
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char *s; |
| 194 |
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{ |
| 195 |
< |
static char *altname[] = {"rview","rpict","pinterp",VIEWSTR,NULL}; |
| 178 |
< |
register char **an; |
| 195 |
> |
char fmt[32]; |
| 196 |
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|
| 197 |
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if (isexpos(s)) |
| 198 |
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exposure *= exposval(s); |
| 199 |
< |
else |
| 200 |
< |
for (an = altname; *an != NULL; an++) |
| 201 |
< |
if (!strncmp(*an, s, strlen(*an))) { |
| 202 |
< |
if (sscanview(&ourview, s+strlen(*an)) > 0) |
| 203 |
< |
gotview++; |
| 187 |
< |
return; |
| 188 |
< |
} |
| 199 |
> |
else if (isformat(s)) { |
| 200 |
> |
formatval(fmt, s); |
| 201 |
> |
wrongformat = strcmp(fmt, COLRFMT); |
| 202 |
> |
} else if (isview(s) && sscanview(&ourview, s) > 0) |
| 203 |
> |
gotview++; |
| 204 |
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} |
| 205 |
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|
| 206 |
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|
| 207 |
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init() /* get data and open window */ |
| 208 |
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{ |
| 209 |
+ |
XWMHints ourxwmhints; |
| 210 |
+ |
XSetWindowAttributes ourwinattr; |
| 211 |
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XSizeHints oursizhints; |
| 212 |
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register int i; |
| 213 |
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|
| 220 |
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} |
| 221 |
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if ((thedisplay = XOpenDisplay(NULL)) == NULL) |
| 222 |
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quiterr("can't open display; DISPLAY variable set?"); |
| 206 |
– |
wind = XCreateSimpleWindow(thedisplay, |
| 207 |
– |
ourroot, 0, 0, xmax, ymax, BORWIDTH, ourblack, ourwhite); |
| 208 |
– |
if (wind == 0) |
| 209 |
– |
quiterr("can't create window"); |
| 223 |
|
if (maxcolors == 0) { /* get number of available colors */ |
| 224 |
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i = DisplayPlanes(thedisplay,ourscreen); |
| 225 |
|
maxcolors = i > 8 ? 256 : 1<<i; |
| 226 |
|
if (maxcolors > 4) maxcolors -= 2; |
| 227 |
|
} |
| 228 |
+ |
/* store image */ |
| 229 |
+ |
getras(); |
| 230 |
+ |
/* open window */ |
| 231 |
+ |
ourwinattr.border_pixel = ourblack; |
| 232 |
+ |
ourwinattr.background_pixel = ourwhite; |
| 233 |
+ |
wind = XCreateWindow(thedisplay, ourroot, 0, 0, xmax, ymax, BORWIDTH, |
| 234 |
+ |
0, InputOutput, ourras->visual, |
| 235 |
+ |
CWBackPixel|CWBorderPixel, &ourwinattr); |
| 236 |
+ |
if (wind == 0) |
| 237 |
+ |
quiterr("can't create window"); |
| 238 |
+ |
width = xmax; |
| 239 |
+ |
height = ymax; |
| 240 |
|
fontid = XLoadFont(thedisplay, FONTNAME); |
| 241 |
|
if (fontid == 0) |
| 242 |
|
quiterr("can't get font"); |
| 243 |
|
XSetFont(thedisplay, ourgc, fontid); |
| 244 |
< |
XStoreName(thedisplay, wind, fname == NULL ? progname : fname); |
| 244 |
> |
revgc = XCreateGC(thedisplay, wind, 0, 0); |
| 245 |
> |
XSetFunction(thedisplay, revgc, GXinvert); |
| 246 |
|
XDefineCursor(thedisplay, wind, XCreateFontCursor(thedisplay, |
| 247 |
|
XC_diamond_cross)); |
| 248 |
+ |
XStoreName(thedisplay, wind, fname == NULL ? progname : fname); |
| 249 |
|
if (geometry != NULL) { |
| 250 |
|
bzero((char *)&oursizhints, sizeof(oursizhints)); |
| 251 |
|
i = XParseGeometry(geometry, &oursizhints.x, &oursizhints.y, |
| 252 |
< |
&oursizhints.width, &oursizhints.height); |
| 253 |
< |
if (i & (XValue|YValue) == (XValue|YValue)) { |
| 252 |
> |
(unsigned *)&oursizhints.width, |
| 253 |
> |
(unsigned *)&oursizhints.height); |
| 254 |
> |
if ((i&(WidthValue|HeightValue)) == (WidthValue|HeightValue)) |
| 255 |
> |
oursizhints.flags |= USSize; |
| 256 |
> |
else { |
| 257 |
> |
oursizhints.width = xmax; |
| 258 |
> |
oursizhints.height = ymax; |
| 259 |
> |
oursizhints.flags |= PSize; |
| 260 |
> |
} |
| 261 |
> |
if ((i&(XValue|YValue)) == (XValue|YValue)) { |
| 262 |
|
oursizhints.flags |= USPosition; |
| 263 |
|
if (i & XNegative) |
| 264 |
< |
oursizhints.x += DisplayWidth(thedisplay,ourscreen)-1; |
| 264 |
> |
oursizhints.x += DisplayWidth(thedisplay, |
| 265 |
> |
ourscreen)-1-oursizhints.width-2*BORWIDTH; |
| 266 |
|
if (i & YNegative) |
| 267 |
< |
oursizhints.y += DisplayHeight(thedisplay,ourscreen)-1; |
| 267 |
> |
oursizhints.y += DisplayHeight(thedisplay, |
| 268 |
> |
ourscreen)-1-oursizhints.height-2*BORWIDTH; |
| 269 |
|
} |
| 233 |
– |
if (i & (WidthValue|HeightValue) == (WidthValue|HeightValue)) |
| 234 |
– |
oursizhints.flags |= USSize; |
| 270 |
|
XSetNormalHints(thedisplay, wind, &oursizhints); |
| 271 |
|
} |
| 272 |
< |
/* store image */ |
| 273 |
< |
getras(); |
| 272 |
> |
ourxwmhints.flags = InputHint|IconPixmapHint; |
| 273 |
> |
ourxwmhints.input = True; |
| 274 |
> |
ourxwmhints.icon_pixmap = XCreateBitmapFromData(thedisplay, |
| 275 |
> |
wind, icondata, iconwidth, iconheight); |
| 276 |
> |
XSetWMHints(thedisplay, wind, &ourxwmhints); |
| 277 |
|
XSelectInput(thedisplay, wind, ButtonPressMask|ButtonReleaseMask |
| 278 |
|
|ButtonMotionMask|StructureNotifyMask |
| 279 |
|
|KeyPressMask|ExposureMask); |
| 312 |
|
getras() /* get raster file */ |
| 313 |
|
{ |
| 314 |
|
colormap ourmap; |
| 277 |
– |
unsigned char rmap[256], gmap[256], bmap[256]; |
| 315 |
|
XVisualInfo vinfo; |
| 279 |
– |
register int i; |
| 316 |
|
|
| 317 |
|
if (maxcolors <= 2) { /* monochrome */ |
| 318 |
|
ourdata = (unsigned char *)malloc(ymax*((xmax+7)/8)); |
| 323 |
|
if (ourras == NULL) |
| 324 |
|
goto fail; |
| 325 |
|
getmono(); |
| 326 |
< |
} else if (XMatchVisualInfo(thedisplay,ourscreen,24,TrueColor,&vinfo)) { |
| 326 |
> |
} else if (XMatchVisualInfo(thedisplay,ourscreen,24,TrueColor,&vinfo) |
| 327 |
> |
/* kludge for DirectColor */ |
| 328 |
> |
|| XMatchVisualInfo(thedisplay,ourscreen,24,DirectColor,&vinfo)) { |
| 329 |
|
ourdata = (unsigned char *)malloc(xmax*ymax*3); |
| 330 |
|
if (ourdata == NULL) |
| 331 |
|
goto fail; |
| 346 |
|
biq(dither,maxcolors,1,ourmap); |
| 347 |
|
else |
| 348 |
|
ciq(dither,maxcolors,1,ourmap); |
| 349 |
< |
for (i = 0; i < 256; i++) { |
| 312 |
< |
rmap[i] = ourmap[0][i]; |
| 313 |
< |
gmap[i] = ourmap[1][i]; |
| 314 |
< |
bmap[i] = ourmap[2][i]; |
| 315 |
< |
} |
| 316 |
< |
if (init_rcolors(ourras, rmap, gmap, bmap) == 0) |
| 349 |
> |
if (init_rcolors(ourras, ourmap[0], ourmap[1], ourmap[2]) == 0) |
| 350 |
|
goto fail; |
| 351 |
|
} |
| 352 |
|
return; |
| 353 |
|
fail: |
| 354 |
< |
quit("could not create raster image"); |
| 354 |
> |
quiterr("could not create raster image"); |
| 355 |
|
} |
| 356 |
|
|
| 357 |
|
|
| 403 |
|
XColor cvx; |
| 404 |
|
int com, n; |
| 405 |
|
double comp; |
| 406 |
+ |
FLOAT hv[2]; |
| 407 |
|
FVECT rorg, rdir; |
| 408 |
|
|
| 409 |
|
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
| 412 |
|
com = buf[0]; |
| 413 |
|
switch (com) { /* interpret command */ |
| 414 |
|
case 'q': |
| 415 |
< |
case CTRL(D): /* quit */ |
| 415 |
> |
case CTRL('D'): /* quit */ |
| 416 |
|
quit(0); |
| 417 |
|
case '\n': |
| 418 |
|
case '\r': |
| 426 |
|
sprintf(buf, "%.3f", intens(cval)/exposure); |
| 427 |
|
break; |
| 428 |
|
case 'l': /* luminance */ |
| 429 |
< |
sprintf(buf, "%.0fn", bright(cval)*683.0/exposure); |
| 429 |
> |
sprintf(buf, "%.0fL", luminance(cval)/exposure); |
| 430 |
|
break; |
| 431 |
|
case 'c': /* color */ |
| 432 |
|
comp = pow(2.0, (double)scale); |
| 436 |
|
colval(cval,BLU)*comp); |
| 437 |
|
break; |
| 438 |
|
} |
| 439 |
< |
XDrawImageString(thedisplay, wind, ourgc, box.xmin, box.ymin, |
| 440 |
< |
buf, strlen(buf)); |
| 439 |
> |
XDrawImageString(thedisplay, wind, ourgc, |
| 440 |
> |
box.xmin, box.ymin+box.ysiz, buf, strlen(buf)); |
| 441 |
|
return(0); |
| 442 |
|
case 'i': /* identify (contour) */ |
| 443 |
|
if (ourras->pixels == NULL) |
| 452 |
|
XStoreColor(thedisplay, ourras->cmap, &cvx); |
| 453 |
|
return(0); |
| 454 |
|
case 'p': /* position */ |
| 455 |
< |
sprintf(buf, "(%d,%d)", ekey->x-xoff, ymax-1-ekey->y+yoff); |
| 455 |
> |
pix2loc(hv, &inpres, ekey->x-xoff, ekey->y-yoff); |
| 456 |
> |
sprintf(buf, "(%d,%d)", (int)(hv[0]*inpres.xr), |
| 457 |
> |
(int)(hv[1]*inpres.yr)); |
| 458 |
|
XDrawImageString(thedisplay, wind, ourgc, ekey->x, ekey->y, |
| 459 |
|
buf, strlen(buf)); |
| 460 |
|
return(0); |
| 463 |
|
XBell(thedisplay, 0); |
| 464 |
|
return(-1); |
| 465 |
|
} |
| 466 |
< |
viewray(rorg, rdir, &ourview, |
| 467 |
< |
(ekey->x-xoff+.5)/xmax, |
| 468 |
< |
(ymax-1-ekey->y+yoff+.5)/ymax); |
| 466 |
> |
pix2loc(hv, &inpres, ekey->x-xoff, ekey->y-yoff); |
| 467 |
> |
if (viewray(rorg, rdir, &ourview, hv[0], hv[1]) < 0) |
| 468 |
> |
return(-1); |
| 469 |
|
printf("%e %e %e ", rorg[0], rorg[1], rorg[2]); |
| 470 |
|
printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]); |
| 471 |
|
fflush(stdout); |
| 479 |
|
scale_rcolors(ourras, pow(2.0, (double)n)); |
| 480 |
|
scale += n; |
| 481 |
|
sprintf(buf, "%+d", scale); |
| 482 |
< |
XDrawImageString(thedisplay, wind, ourgc, box.xmin, box.ymin, |
| 483 |
< |
buf, strlen(buf)); |
| 482 |
> |
XDrawImageString(thedisplay, wind, ourgc, |
| 483 |
> |
box.xmin, box.ymin+box.ysiz, buf, strlen(buf)); |
| 484 |
|
XFlush(thedisplay); |
| 485 |
|
free(ourdata); |
| 486 |
|
free_raster(ourras); |
| 487 |
|
getras(); |
| 488 |
|
/* fall through */ |
| 489 |
< |
case CTRL(R): /* redraw */ |
| 490 |
< |
case CTRL(L): |
| 489 |
> |
case CTRL('R'): /* redraw */ |
| 490 |
> |
case CTRL('L'): |
| 491 |
|
unmap_rcolors(ourras); |
| 492 |
|
XClearWindow(thedisplay, wind); |
| 493 |
|
map_rcolors(ourras, wind); |
| 509 |
|
XButtonPressedEvent *ebut; |
| 510 |
|
{ |
| 511 |
|
union { |
| 512 |
< |
XEvent u; |
| 513 |
< |
XButtonReleasedEvent b; |
| 514 |
< |
} e; |
| 512 |
> |
XEvent u; |
| 513 |
> |
XButtonReleasedEvent b; |
| 514 |
> |
XPointerMovedEvent m; |
| 515 |
> |
} e; |
| 516 |
> |
int mxo, myo; |
| 517 |
|
|
| 518 |
< |
XMaskEvent(thedisplay, ButtonReleaseMask, &e.u); |
| 518 |
> |
XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e.u); |
| 519 |
> |
while (e.u.type == MotionNotify) { |
| 520 |
> |
mxo = e.m.x; |
| 521 |
> |
myo = e.m.y; |
| 522 |
> |
revline(ebut->x, ebut->y, mxo, myo); |
| 523 |
> |
revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y, |
| 524 |
> |
xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax); |
| 525 |
> |
XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e.u); |
| 526 |
> |
revline(ebut->x, ebut->y, mxo, myo); |
| 527 |
> |
revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y, |
| 528 |
> |
xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax); |
| 529 |
> |
} |
| 530 |
|
xoff += e.b.x - ebut->x; |
| 531 |
|
yoff += e.b.y - ebut->y; |
| 532 |
|
XClearWindow(thedisplay, wind); |
| 569 |
|
revbox(x0, y0, x1, y1) /* draw box with reversed lines */ |
| 570 |
|
int x0, y0, x1, y1; |
| 571 |
|
{ |
| 572 |
< |
static GC mygc = 0; |
| 572 |
> |
revline(x0, y0, x1, y0); |
| 573 |
> |
revline(x0, y1, x1, y1); |
| 574 |
> |
revline(x0, y0, x0, y1); |
| 575 |
> |
revline(x1, y0, x1, y1); |
| 576 |
> |
} |
| 577 |
|
|
| 525 |
– |
if (mygc == 0) { |
| 526 |
– |
mygc = XCreateGC(thedisplay, wind, 0, 0); |
| 527 |
– |
XSetFunction(thedisplay, mygc, GXinvert); |
| 528 |
– |
} |
| 529 |
– |
XDrawLine(thedisplay, wind, mygc, x0, y0, x1, y0); |
| 530 |
– |
XDrawLine(thedisplay, wind, mygc, x0, y1, x1, y1); |
| 531 |
– |
XDrawLine(thedisplay, wind, mygc, x0, y0, x0, y1); |
| 532 |
– |
XDrawLine(thedisplay, wind, mygc, x1, y0, x1, y1); |
| 533 |
– |
} /* end of revbox */ |
| 578 |
|
|
| 535 |
– |
|
| 579 |
|
avgbox(clr) /* average color over current box */ |
| 580 |
|
COLOR clr; |
| 581 |
|
{ |
| 582 |
+ |
static COLOR lc; |
| 583 |
+ |
static int ll, lr, lt, lb; |
| 584 |
|
int left, right, top, bottom; |
| 585 |
|
int y; |
| 586 |
|
double d; |
| 604 |
|
bottom = ymax; |
| 605 |
|
if (top >= bottom) |
| 606 |
|
return(-1); |
| 607 |
+ |
if (left == ll && right == lr && top == lt && bottom == lb) { |
| 608 |
+ |
copycolor(clr, lc); |
| 609 |
+ |
return; |
| 610 |
+ |
} |
| 611 |
|
for (y = top; y < bottom; y++) { |
| 612 |
|
if (getscan(y) == -1) |
| 613 |
|
return(-1); |
| 618 |
|
} |
| 619 |
|
d = 1.0/((right-left)*(bottom-top)); |
| 620 |
|
scalecolor(clr, d); |
| 621 |
+ |
ll = left; lr = right; lt = top; lb = bottom; |
| 622 |
+ |
copycolor(lc, clr); |
| 623 |
|
return(0); |
| 624 |
|
} |
| 625 |
|
|
| 628 |
|
{ |
| 629 |
|
register unsigned char *dp; |
| 630 |
|
register int x, err; |
| 631 |
< |
int y; |
| 581 |
< |
rgbpixel *inline; |
| 631 |
> |
int y, errp; |
| 632 |
|
short *cerr; |
| 633 |
|
|
| 634 |
< |
if ((inline = (rgbpixel *)malloc(xmax*sizeof(rgbpixel))) == NULL |
| 635 |
< |
|| (cerr = (short *)calloc(xmax,sizeof(short))) == NULL) |
| 586 |
< |
quit("out of memory in getmono"); |
| 634 |
> |
if ((cerr = (short *)calloc(xmax,sizeof(short))) == NULL) |
| 635 |
> |
quiterr("out of memory in getmono"); |
| 636 |
|
dp = ourdata - 1; |
| 637 |
|
for (y = 0; y < ymax; y++) { |
| 638 |
< |
picreadline3(y, inline); |
| 638 |
> |
if (getscan(y) < 0) |
| 639 |
> |
quiterr("seek error in getmono"); |
| 640 |
> |
normcolrs(scanline, xmax, scale); |
| 641 |
> |
add2icon(y, scanline); |
| 642 |
|
err = 0; |
| 643 |
|
for (x = 0; x < xmax; x++) { |
| 644 |
|
if (!(x&7)) |
| 645 |
|
*++dp = 0; |
| 646 |
< |
err += rgb_bright(&inline[x]) + cerr[x]; |
| 646 |
> |
errp = err; |
| 647 |
> |
err += normbright(scanline[x]) + cerr[x]; |
| 648 |
|
if (err > 127) |
| 649 |
|
err -= 255; |
| 650 |
|
else |
| 651 |
< |
*dp |= 1<<(x&07); |
| 652 |
< |
cerr[x] = err >>= 1; |
| 651 |
> |
*dp |= 1<<(7-(x&07)); |
| 652 |
> |
err /= 3; |
| 653 |
> |
cerr[x] = err + errp; |
| 654 |
|
} |
| 655 |
|
} |
| 602 |
– |
free((char *)inline); |
| 656 |
|
free((char *)cerr); |
| 657 |
|
} |
| 658 |
|
|
| 659 |
|
|
| 660 |
+ |
add2icon(y, scan) /* add a scanline to our icon data */ |
| 661 |
+ |
int y; |
| 662 |
+ |
COLR *scan; |
| 663 |
+ |
{ |
| 664 |
+ |
static short cerr[ICONSIZ]; |
| 665 |
+ |
static int ynext; |
| 666 |
+ |
static char *dp; |
| 667 |
+ |
register int err; |
| 668 |
+ |
register int x, ti; |
| 669 |
+ |
int errp; |
| 670 |
+ |
|
| 671 |
+ |
if (iconheight == 0) { /* initialize */ |
| 672 |
+ |
if (xmax <= ICONSIZ && ymax <= ICONSIZ) { |
| 673 |
+ |
iconwidth = xmax; |
| 674 |
+ |
iconheight = ymax; |
| 675 |
+ |
} else if (xmax > ymax) { |
| 676 |
+ |
iconwidth = ICONSIZ; |
| 677 |
+ |
iconheight = ICONSIZ*ymax/xmax; |
| 678 |
+ |
if (iconheight < 1) |
| 679 |
+ |
iconheight = 1; |
| 680 |
+ |
} else { |
| 681 |
+ |
iconwidth = ICONSIZ*xmax/ymax; |
| 682 |
+ |
if (iconwidth < 1) |
| 683 |
+ |
iconwidth = 1; |
| 684 |
+ |
iconheight = ICONSIZ; |
| 685 |
+ |
} |
| 686 |
+ |
ynext = 0; |
| 687 |
+ |
dp = icondata - 1; |
| 688 |
+ |
} |
| 689 |
+ |
if (y < ynext*ymax/iconheight) /* skip this one */ |
| 690 |
+ |
return; |
| 691 |
+ |
err = 0; |
| 692 |
+ |
for (x = 0; x < iconwidth; x++) { |
| 693 |
+ |
if (!(x&7)) |
| 694 |
+ |
*++dp = 0; |
| 695 |
+ |
errp = err; |
| 696 |
+ |
ti = x*xmax/iconwidth; |
| 697 |
+ |
err += normbright(scan[ti]) + cerr[x]; |
| 698 |
+ |
if (err > 127) |
| 699 |
+ |
err -= 255; |
| 700 |
+ |
else |
| 701 |
+ |
*dp |= 1<<(x&07); |
| 702 |
+ |
err /= 3; |
| 703 |
+ |
cerr[x] = err + errp; |
| 704 |
+ |
} |
| 705 |
+ |
ynext++; |
| 706 |
+ |
} |
| 707 |
+ |
|
| 708 |
+ |
|
| 709 |
|
getfull() /* get full (24-bit) data */ |
| 710 |
|
{ |
| 711 |
|
int y; |
| 712 |
< |
|
| 713 |
< |
for (y = 0; y < ymax; y++) |
| 714 |
< |
picreadline3(y, (rgbpixel *)(ourdata+y*xmax*3)); |
| 712 |
> |
register unsigned char *dp; |
| 713 |
> |
register int x; |
| 714 |
> |
/* set gamma correction */ |
| 715 |
> |
setcolrgam(gamcor); |
| 716 |
> |
/* read and convert file */ |
| 717 |
> |
dp = ourdata; |
| 718 |
> |
for (y = 0; y < ymax; y++) { |
| 719 |
> |
if (getscan(y) < 0) |
| 720 |
> |
quiterr("seek error in getfull"); |
| 721 |
> |
if (scale) |
| 722 |
> |
shiftcolrs(scanline, xmax, scale); |
| 723 |
> |
colrs_gambs(scanline, xmax); |
| 724 |
> |
add2icon(y, scanline); |
| 725 |
> |
for (x = 0; x < xmax; x++) { |
| 726 |
> |
*dp++ = scanline[x][RED]; |
| 727 |
> |
*dp++ = scanline[x][GRN]; |
| 728 |
> |
*dp++ = scanline[x][BLU]; |
| 729 |
> |
} |
| 730 |
> |
} |
| 731 |
|
} |
| 732 |
|
|
| 733 |
|
|
| 766 |
|
if (scanpos == NULL || scanpos[y] == -1) |
| 767 |
|
return(-1); |
| 768 |
|
if (fseek(fin, scanpos[y], 0) == -1) |
| 769 |
< |
quit("fseek error"); |
| 769 |
> |
quiterr("fseek error"); |
| 770 |
|
cury = y; |
| 771 |
|
} else if (scanpos != NULL) |
| 772 |
|
scanpos[y] = ftell(fin); |
| 789 |
|
quiterr("cannot seek for picreadline"); |
| 790 |
|
/* convert scanline */ |
| 791 |
|
normcolrs(scanline, xmax, scale); |
| 792 |
+ |
add2icon(y, scanline); |
| 793 |
|
for (i = 0; i < xmax; i++) { |
| 794 |
|
l3[i].r = scanline[i][RED]; |
| 795 |
|
l3[i].g = scanline[i][GRN]; |
| 813 |
|
register int i, val; |
| 814 |
|
|
| 815 |
|
for (i = 0; i < 256; i++) { |
| 816 |
< |
val = pow(i/256.0, 1.0/gamcor) * 256.0; |
| 816 |
> |
val = pow((i+0.5)/256.0, 1.0/gamcor) * 256.0; |
| 817 |
|
map[0][i] = map[1][i] = map[2][i] = val; |
| 818 |
|
} |
| 819 |
|
} |