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root/radiance/ray/src/px/x11image.c

Comparing ray/src/px/x11image.c (file contents):
Revision 1.8 by greg, Sat Oct 13 21:31:48 1990 UTC vs.
Revision 2.77 by greg, Tue Sep 10 20:24:42 2024 UTC

#	Line 1 | Line 1
1	–	/* Copyright (c) 1990 Regents of the University of California */
2	–
1		#ifndef lint
2	<	static char SCCSid[] = "$SunId$ LBL";
2	>	static const char RCSid[] = "$Id$";
3		#endif
6	–
4		/*
5		*  x11image.c - driver for X-windows
6		*
#	Line 21 | Line 18 | static char SCCSid[] = "$SunId$ LBL";
18
19		#include  "standard.h"
20
21	+	#include  <string.h>
22	+	#include  <signal.h>
23	+	#include  <unistd.h>
24	+	#include  <sys/types.h>
25	+	#include  <sys/wait.h>
26		#include  <X11/Xlib.h>
27		#include  <X11/cursorfont.h>
28		#include  <X11/Xutil.h>
29	+	#include  <X11/Xatom.h>
30
31		#include  "color.h"
32	+	#include  "tonemap.h"
33	+	#include  "clrtab.h"
34		#include  "view.h"
30	–	#include  "pic.h"
35		#include  "x11raster.h"
36		#include  "random.h"
37
38		#define  FONTNAME       "8x13"          /* text font we'll use */
39
40	<	#define  CTRL(c)        ('c'-'@')
40	>	#define  CTRL(c)        ((c)-'@')
41
42		#define  BORWIDTH       5               /* border width */
43
44	+	#define  ICONSIZ        (8*10)          /* maximum icon dimension (even 8) */
45	+
46	+	#define  FIXWEIGHT      20              /* weight to add for fixation points */
47	+
48		#define  ourscreen      DefaultScreen(thedisplay)
41	–	#define  ourblack       BlackPixel(thedisplay,ourscreen)
42	–	#define  ourwhite       WhitePixel(thedisplay,ourscreen)
49		#define  ourroot        RootWindow(thedisplay,ourscreen)
44	–	#define  ourgc          DefaultGC(thedisplay,ourscreen)
50
51		#define  revline(x0,y0,x1,y1)   XDrawLine(thedisplay,wind,revgc,x0,y0,x1,y1)
52
53		#define  redraw(x,y,w,h) patch_raster(wind,(x)-xoff,(y)-yoff,x,y,w,h,ourras)
54
55		double  gamcor = 2.2;                   /* gamma correction */
56	+	char  *gamstr = NULL;                   /* gamma value override */
57
58		int  dither = 1;                        /* dither colors? */
59		int  fast = 0;                          /* keep picture in Pixmap? */
60
61	<	Window  wind = 0;                       /* our output window */
56	<	Font  fontid;                           /* our font */
61	>	char    *dispname = NULL;               /* our display name */
62
63	+	Window  wind = 0;                       /* our output window */
64	+	unsigned long  ourblack=0, ourwhite=1;  /* black and white for this visual */
65		int  maxcolors = 0;                     /* maximum colors */
66		int  greyscale = 0;                     /* in grey */
67
#	Line 63 | Line 70 | int  scale = 0;                                /* scalefactor; power of two */
70		int  xoff = 0;                          /* x image offset */
71		int  yoff = 0;                          /* y image offset */
72
73	+	int  parent = 0;                        /* number of children, -1 if child */
74	+	int  sequential = 0;                    /* display images in sequence */
75	+
76	+	char  *tout = "od";                     /* output of 't' command */
77	+	int  tinterv = 0;                       /* interval between mouse reports */
78	+
79	+	int  tmflags = TM_F_LINEAR;             /* tone mapping flags */
80	+
81		VIEW  ourview = STDVIEW;                /* image view parameters */
82		int  gotview = 0;                       /* got parameters from file */
83
84		COLR  *scanline;                        /* scan line buffer */
85	+	TMbright  *lscan;                       /* encoded luminance scanline */
86	+	uby8  *cscan;                           /* encoded chroma scanline */
87	+	uby8  *pscan;                           /* compute pixel scanline */
88
89	<	int  xmax, ymax;                        /* picture resolution */
89	>	RESOLU  inpres;                         /* input resolution and ordering */
90	>	int  xmax, ymax;                        /* picture dimensions */
91		int  width, height;                     /* window size */
92		char  *fname = NULL;                    /* input file name */
93	<	FILE  *fin = stdin;                     /* input file */
93	>	FILE  *fin = NULL;                      /* input file */
94		long  *scanpos = NULL;                  /* scan line positions in file */
95		int  cury = 0;                          /* current scan location */
96
97		double  exposure = 1.0;                 /* exposure compensation used */
98
99	+	int  wrongformat = 0;                   /* input in another format? */
100	+
101	+	TMstruct        *tmGlobal;              /* base tone-mapping */
102	+	TMstruct        *tmCurrent;             /* curren tone-mapping */
103	+
104	+	GC      ourgc;                          /* standard graphics context */
105		GC      revgc;                          /* graphics context with GXinvert */
106
107	<	XRASTER *ourras;                        /* our stored image */
107	>	int             *ourrank;               /* our visual class ranking */
108	>	XVisualInfo     ourvis;                 /* our visual */
109	>	XRASTER         *ourras;                /* our stored image */
110		unsigned char   *ourdata;               /* our image data */
111
112		struct {
113		int  xmin, ymin, xsiz, ysiz;
114	<	}  box = {0, 0, 0, 0};                  /* current box */
114	>	}  bbox = {0, 0, 0, 0};                 /* current bbox */
115
116		char  *geometry = NULL;                 /* geometry specification */
117
118	+	char  icondata[ICONSIZ*ICONSIZ/8];      /* icon bitmap data */
119	+	int  iconwidth = 0, iconheight = 0;
120	+
121		char  *progname;
122
123		char  errmsg[128];
124
125	<	extern long  ftell();
125	>	uby8  clrtab[256][3];                   /* global color map */
126
97	–	extern char  *malloc(), *calloc();
127
99	–	extern double  atof(), pow(), log();
100	–
128		Display  *thedisplay;
129	+	Atom  closedownAtom, wmProtocolsAtom;
130
131	<	main(argc, argv)
132	<	int  argc;
133	<	char  *argv[];
131	>	int  sigrecv;
132	>
133	>	void  onsig(int i) { sigrecv++; }
134	>
135	>	typedef void doboxf_t(COLR *scn, int n, void *);
136	>
137	>	static gethfunc headline;
138	>	static void init(int argc, char **argv);
139	>	static void quiterr(char *err);
140	>	static int viscmp(XVisualInfo *v1, XVisualInfo *v2);
141	>	static void getbestvis(void);
142	>	static void getras(void);
143	>	static void getevent(void);
144	>	static int traceray(int xpos, int ypos);
145	>	static int docom(XKeyPressedEvent *ekey);
146	>	static void moveimage(XButtonPressedEvent *ebut);
147	>	static void getbox(XButtonPressedEvent *ebut);
148	>	static void trackrays(XButtonPressedEvent *ebut);
149	>	static void revbox(int x0, int y0, int x1, int y1);
150	>	static doboxf_t colavg;
151	>	static doboxf_t addfix;
152	>	static int avgbox(COLOR cavg);
153	>	static int dobox(doboxf_t *f, void *p);
154	>	static void make_tonemap(void);
155	>	static void tmap_colrs(COLR *scn, int len);
156	>	static void getmono(void);
157	>	static void add2icon(int y, COLR *scan);
158	>	static void getfull(void);
159	>	static void getgrey(void);
160	>	static void getmapped(void);
161	>	static void scale_rcolors(XRASTER *xr, double sf);
162	>	static int getscan(int y);
163	>
164	>
165	>	int
166	>	main(int  argc, char  *argv[])
167		{
107	–	int  headline();
168		int  i;
169	+	int  pid;
170
171		progname = argv[0];
172	+	fin = stdin;
173
174		for (i = 1; i < argc; i++)
175		if (argv[i][0] == '-')
176		switch (argv[i][1]) {
177	<	case 'c':
177	>	case 'c':                       /* number of colors */
178		maxcolors = atoi(argv[++i]);
179		break;
180	<	case 'b':
180	>	case 'b':                       /* greyscale only */
181		greyscale = !greyscale;
182		break;
183	<	case 'm':
183	>	case 'm':                       /* monochrome */
184	>	greyscale = 1;
185		maxcolors = 2;
186		break;
187	<	case 'd':
188	<	dither = !dither;
187	>	case 'd':                       /* display or dither */
188	>	if (argv[i][2] == 'i')
189	>	dispname = argv[++i];
190	>	else
191	>	dither = !dither;
192		break;
193	<	case 'f':
193	>	case 'f':                       /* save pixmap */
194		fast = !fast;
195		break;
196	<	case 'e':
197	<	if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
196	>	case 's':                       /* one at a time */
197	>	sequential = !sequential;
198	>	break;
199	>	case 'o':                       /* 't' output */
200	>	tout = argv[i]+2;
201	>	break;
202	>	case 't':                       /* msec interval */
203	>	tinterv = atoi(argv[++i]);
204	>	break;
205	>	case 'e':                       /* exposure comp. */
206	>	i++;
207	>	if (argv[i][0] == 'a') {
208	>	tmflags = TM_F_CAMERA;
209	>	break;
210	>	}
211	>	if (argv[i][0] == 'h') {
212	>	tmflags = TM_F_HUMAN;
213	>	break;
214	>	}
215	>	if (argv[i][0] != '+' && argv[i][0] != '-')
216		goto userr;
217	<	scale = atoi(argv[++i]);
217	>	scale = atoi(argv[i]);
218		break;
219	<	case 'g':
220	<	if (!strcmp(argv[i], "-geometry"))
219	>	case 'g':                       /* gamma comp. */
220	>	if (argv[i][2] == 'e')
221		geometry = argv[++i];
222		else
223	<	gamcor = atof(argv[++i]);
223	>	gamstr = argv[++i];
224		break;
225		default:
226		goto userr;
#	Line 146 | Line 230 | char  *argv[];
230		else
231		break;
232
233	<	if (i == argc-1) {
233	>	if (i > argc)
234	>	goto userr;
235	>	while (i < argc-1) {
236	>	sigrecv = 0;
237	>	signal(SIGCONT, onsig);
238	>	if ((pid=fork()) == 0) {        /* a child for each picture */
239	>	parent = -1;
240	>	break;
241	>	}
242	>	if (pid < 0)
243	>	quiterr("fork failed");
244	>	parent++;
245	>	while (!sigrecv)
246	>	pause();        /* wait for wake-up call */
247	>	i++;
248	>	}
249	>	if (i < argc) {                 /* open picture file */
250		fname = argv[i];
251		fin = fopen(fname, "r");
252	<	if (fin == NULL) {
253	<	sprintf(errmsg, "can't open file \"%s\"", fname);
254	<	quiterr(errmsg);
155	<	}
156	<	} else if (i != argc)
157	<	goto userr;
252	>	if (fin == NULL)
253	>	quiterr("cannot open picture file");
254	>	}
255		/* get header */
256	<	getheader(fin, headline);
256	>	getheader(fin, headline, NULL);
257		/* get picture dimensions */
258	<	if (fgetresolu(&xmax, &ymax, fin) != (YMAJOR|YDECR))
259	<	quiterr("bad picture size");
258	>	if (wrongformat || !fgetsresolu(&inpres, fin))
259	>	quiterr("bad picture format");
260	>	xmax = scanlen(&inpres);
261	>	ymax = numscans(&inpres);
262		/* set view parameters */
263		if (gotview && setview(&ourview) != NULL)
264		gotview = 0;
265		if ((scanline = (COLR *)malloc(xmax*sizeof(COLR))) == NULL)
266		quiterr("out of memory");
267
268	<	init();                 /* get file and open window */
268	>	init(argc, argv);                       /* get file and open window */
269
270		for ( ; ; )
271		getevent();             /* main loop */
272		userr:
273		fprintf(stderr,
274	<	"Usage: %s [-geometry spec][-b][-m][-d][-f][-c ncolors][-e +/-stops] file\n",
274	>	"Usage: %s [-di disp][[-ge] spec][-b][-m][-d][-f][-c nclrs][-e spec][-g gamcor][-s][-ospec][-t intvl] hdr ..\n",
275		progname);
276	<	quit(1);
276	>	exit(1);
277		}
278
279
280	<	headline(s)             /* get relevant info from header */
281	<	char  *s;
280	>	static int
281	>	headline(               /* get relevant info from header */
282	>	char    *s,
283	>	void    *p
284	>	)
285		{
286	<	static char  *altname[] = {"rview","rpict","pinterp",VIEWSTR,NULL};
185	<	register char  **an;
286	>	char  fmt[MAXFMTLEN];
287
288		if (isexpos(s))
289		exposure *= exposval(s);
290	<	else
291	<	for (an = altname; *an != NULL; an++)
292	<	if (!strncmp(*an, s, strlen(*an))) {
293	<	if (sscanview(&ourview, s+strlen(*an)) > 0)
294	<	gotview++;
295	<	return;
296	<	}
290	>	else if (formatval(fmt, s))
291	>	wrongformat = strcmp(fmt, COLRFMT) && strcmp(fmt, SPECFMT);
292	>	else if (isview(s))
293	>	gotview += sscanview(&ourview, s);
294	>	else if (isncomp(s))
295	>	NCSAMP = ncompval(s);
296	>	else if (iswlsplit(s))
297	>	wlsplitval(WLPART, s);
298	>	return(0);
299		}
300
301
302	<	init()                  /* get data and open window */
302	>	static void
303	>	init(                   /* get data and open window */
304	>	int argc,
305	>	char **argv
306	>	)
307		{
308		XSetWindowAttributes    ourwinattr;
309	<	XSizeHints  oursizhints;
310	<	register int  i;
309	>	XClassHint      xclshints;
310	>	XWMHints        xwmhints;
311	>	XSizeHints      xszhints;
312	>	XTextProperty   windowName, iconName;
313	>	XGCValues       xgcv;
314	>	char    *name;
315	>	register int    i;
316
317		if (fname != NULL) {
318		scanpos = (long *)malloc(ymax*sizeof(long));
319		if (scanpos == NULL)
320	<	goto memerr;
320	>	quiterr("out of memory");
321		for (i = 0; i < ymax; i++)
322		scanpos[i] = -1;
323	<	}
324	<	if ((thedisplay = XOpenDisplay(NULL)) == NULL)
325	<	quiterr("can't open display; DISPLAY variable set?");
326	<	if (maxcolors == 0) {           /* get number of available colors */
327	<	i = DisplayPlanes(thedisplay,ourscreen);
328	<	maxcolors = i > 8 ? 256 : 1<<i;
329	<	if (maxcolors > 4) maxcolors -= 2;
330	<	}
323	>	name = fname;
324	>	} else
325	>	name = progname;
326	>	/* remove directory prefix from name */
327	>	for (i = strlen(name); i-- > 0; )
328	>	if (name[i] == '/')
329	>	break;
330	>	name += i+1;
331	>	if ((thedisplay = XOpenDisplay(dispname)) == NULL)
332	>	quiterr("cannot open display");
333	>	/* set gamma value */
334	>	if (gamstr == NULL)             /* get it from the X server */
335	>	gamstr = XGetDefault(thedisplay, "radiance", "gamma");
336	>	if (gamstr == NULL)             /* get it from the environment */
337	>	gamstr = getenv("DISPLAY_GAMMA");
338	>	if (gamstr != NULL)
339	>	gamcor = atof(gamstr);
340	>	/* get best visual for default screen */
341	>	getbestvis();
342		/* store image */
343		getras();
344	<	/* open window */
345	<	ourwinattr.border_pixel = ourblack;
346	<	ourwinattr.background_pixel = ourwhite;
224	<	wind = XCreateWindow(thedisplay, ourroot, 0, 0, xmax, ymax, BORWIDTH,
225	<	0, InputOutput, ourras->visual,
226	<	CWBackPixel|CWBorderPixel, &ourwinattr);
227	<	if (wind == 0)
228	<	quiterr("can't create window");
229	<	width = xmax;
230	<	height = ymax;
231	<	fontid = XLoadFont(thedisplay, FONTNAME);
232	<	if (fontid == 0)
233	<	quiterr("can't get font");
234	<	XSetFont(thedisplay, ourgc, fontid);
235	<	revgc = XCreateGC(thedisplay, wind, 0, 0);
236	<	XSetFunction(thedisplay, revgc, GXinvert);
237	<	XStoreName(thedisplay, wind, fname == NULL ? progname : fname);
238	<	XDefineCursor(thedisplay, wind, XCreateFontCursor(thedisplay,
239	<	XC_diamond_cross));
344	>	/* get size and position */
345	>	xszhints.flags = 0;
346	>	xszhints.width = xmax; xszhints.height = ymax;
347		if (geometry != NULL) {
348	<	bzero((char *)&oursizhints, sizeof(oursizhints));
349	<	i = XParseGeometry(geometry, &oursizhints.x, &oursizhints.y,
350	<	&oursizhints.width, &oursizhints.height);
348	>	i = XParseGeometry(geometry, &xszhints.x, &xszhints.y,
349	>	(unsigned *)&xszhints.width,
350	>	(unsigned *)&xszhints.height);
351		if ((i&(WidthValue|HeightValue)) == (WidthValue|HeightValue))
352	<	oursizhints.flags |= USSize;
353	<	else {
354	<	oursizhints.width = xmax;
248	<	oursizhints.height = ymax;
249	<	oursizhints.flags |= PSize;
250	<	}
352	>	xszhints.flags |= USSize;
353	>	else
354	>	xszhints.flags |= PSize;
355		if ((i&(XValue|YValue)) == (XValue|YValue)) {
356	<	oursizhints.flags |= USPosition;
356	>	xszhints.flags |= USPosition;
357		if (i & XNegative)
358	<	oursizhints.x += DisplayWidth(thedisplay,
359	<	ourscreen)-1-oursizhints.width-2*BORWIDTH;
358	>	xszhints.x += DisplayWidth(thedisplay,
359	>	ourscreen)-1-xszhints.width-2*BORWIDTH;
360		if (i & YNegative)
361	<	oursizhints.y += DisplayHeight(thedisplay,
362	<	ourscreen)-1-oursizhints.height-2*BORWIDTH;
361	>	xszhints.y += DisplayHeight(thedisplay,
362	>	ourscreen)-1-xszhints.height-2*BORWIDTH;
363		}
260	–	XSetNormalHints(thedisplay, wind, &oursizhints);
364		}
365	<	XSelectInput(thedisplay, wind, ButtonPressMask|ButtonReleaseMask
366	<	|ButtonMotionMask|StructureNotifyMask
367	<	|KeyPressMask|ExposureMask);
365	>	/* open window */
366	>	i = CWEventMask|CWCursor|CWBackPixel|CWBorderPixel;
367	>	ourwinattr.border_pixel = ourwhite;
368	>	ourwinattr.background_pixel = ourblack;
369	>	if (ourvis.visual != DefaultVisual(thedisplay,ourscreen)) {
370	>	ourwinattr.colormap = newcmap(thedisplay, ourscreen, ourvis.visual);
371	>	i |= CWColormap;
372	>	}
373	>	ourwinattr.event_mask = ExposureMask|KeyPressMask|ButtonPressMask|
374	>	ButtonReleaseMask|ButtonMotionMask|StructureNotifyMask;
375	>	ourwinattr.cursor = XCreateFontCursor(thedisplay, XC_diamond_cross);
376	>	wind = XCreateWindow(thedisplay, ourroot, xszhints.x, xszhints.y,
377	>	xszhints.width, xszhints.height, BORWIDTH,
378	>	ourvis.depth, InputOutput, ourvis.visual,
379	>	i, &ourwinattr);
380	>	if (wind == 0)
381	>	quiterr("cannot create window");
382	>	width = xmax;
383	>	height = ymax;
384	>	/* prepare graphics drawing context */
385	>	if ((xgcv.font = XLoadFont(thedisplay, FONTNAME)) == 0)
386	>	quiterr("cannot get font");
387	>	xgcv.foreground = ourblack;
388	>	xgcv.background = ourwhite;
389	>	ourgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground|
390	>	GCFont, &xgcv);
391	>	xgcv.function = GXinvert;
392	>	revgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground|
393	>	GCFunction, &xgcv);
394	>
395	>	/* set up the window manager */
396	>	xwmhints.flags = InputHint|IconPixmapHint;
397	>	xwmhints.input = True;
398	>	xwmhints.icon_pixmap = XCreateBitmapFromData(thedisplay,
399	>	wind, icondata, iconwidth, iconheight);
400	>
401	>	windowName.encoding = iconName.encoding = XA_STRING;
402	>	windowName.format = iconName.format = 8;
403	>	windowName.value = (u_char *)name;
404	>	windowName.nitems = strlen((char *)windowName.value);
405	>	iconName.value = (u_char *)name;
406	>	iconName.nitems = strlen((char *)windowName.value);
407	>
408	>	xclshints.res_name = NULL;
409	>	xclshints.res_class = "Ximage";
410	>	XSetWMProperties(thedisplay, wind, &windowName, &iconName,
411	>	argv, argc, &xszhints, &xwmhints, &xclshints);
412	>	closedownAtom = XInternAtom(thedisplay, "WM_DELETE_WINDOW", False);
413	>	wmProtocolsAtom = XInternAtom(thedisplay, "WM_PROTOCOLS", False);
414	>	XSetWMProtocols(thedisplay, wind, &closedownAtom, 1);
415	>
416		XMapWindow(thedisplay, wind);
266	–	return;
267	–	memerr:
268	–	quiterr("out of memory");
417		} /* end of init */
418
419
420	<	quiterr(err)            /* print message and exit */
421	<	char  *err;
420	>	static void
421	>	quiterr(                /* print message and exit */
422	>	char  *err
423	>	)
424		{
425	<	if (err != NULL) {
426	<	fprintf(stderr, "%s: %s\n", progname, err);
427	<	exit(1);
425	>	register int  es;
426	>	int  cs;
427	>
428	>	if ( (es = (err != NULL)) )
429	>	fprintf(stderr, "%s: %s: %s\n", progname,
430	>	fname==NULL?"<stdin>":fname, err);
431	>	if (thedisplay != NULL)
432	>	XCloseDisplay(thedisplay);
433	>	if ((parent < 0) & (sigrecv == 0))
434	>	kill(getppid(), SIGCONT);
435	>	while (parent > 0 && wait(&cs) != -1) { /* wait for any children */
436	>	if (es == 0)
437	>	es = cs>>8 & 0xff;
438	>	parent--;
439		}
440	<	exit(0);
440	>	exit(es);
441		}
442
443
444	<	eputs(s)
445	<	char    *s;
444	>	static int
445	>	viscmp(         /* compare visual to see which is better, descending */
446	>	register XVisualInfo    *v1,
447	>	register XVisualInfo    *v2
448	>	)
449		{
450	<	fputs(s, stderr);
450	>	int     bad1 = 0, bad2 = 0;
451	>	register int  *rp;
452	>
453	>	if (v1->class == v2->class) {
454	>	if ((v1->class == TrueColor) | (v1->class == DirectColor)) {
455	>	/* prefer 24-bit */
456	>	if ((v1->depth == 24) & (v2->depth > 24))
457	>	return(-1);
458	>	if ((v1->depth > 24) & (v2->depth == 24))
459	>	return(1);
460	>	/* go for maximum depth otherwise */
461	>	return(v2->depth - v1->depth);
462	>	}
463	>	/* don't be too greedy */
464	>	if ((maxcolors <= 1<<v1->depth) & (maxcolors <= 1<<v2->depth))
465	>	return(v1->depth - v2->depth);
466	>	return(v2->depth - v1->depth);
467	>	}
468	>	/* prefer Pseudo when < 15-bit */
469	>	if ((v1->class == TrueColor) | (v1->class == DirectColor) &&
470	>	v1->depth < 15)
471	>	bad1 = 1;
472	>	if ((v2->class == TrueColor) | (v2->class == DirectColor) &&
473	>	v2->depth < 15)
474	>	bad2 = -1;
475	>	if (bad1 | bad2)
476	>	return(bad1+bad2);
477	>	/* otherwise, use class ranking */
478	>	for (rp = ourrank; *rp != -1; rp++) {
479	>	if (v1->class == *rp)
480	>	return(-1);
481	>	if (v2->class == *rp)
482	>	return(1);
483	>	}
484	>	return(0);
485		}
486
487
488	<	quit(code)
489	<	int  code;
488	>	static void
489	>	getbestvis(void)                        /* get the best visual for this screen */
490		{
491	<	exit(code);
491	>	#ifdef DEBUG
492	>	static char  vistype[][12] = {
493	>	"StaticGray",
494	>	"GrayScale",
495	>	"StaticColor",
496	>	"PseudoColor",
497	>	"TrueColor",
498	>	"DirectColor"
499	>	};
500	>	#endif
501	>	static int      rankings[3][6] = {
502	>	{TrueColor,DirectColor,PseudoColor,GrayScale,StaticGray,-1},
503	>	{PseudoColor,GrayScale,StaticGray,-1},
504	>	{PseudoColor,GrayScale,StaticGray,-1}
505	>	};
506	>	XVisualInfo     *xvi;
507	>	int     vismatched;
508	>	register int    i, j;
509	>
510	>	if (greyscale) {
511	>	ourrank = rankings[2];
512	>	if (maxcolors < 2) maxcolors = 256;
513	>	} else if (maxcolors >= 2 && maxcolors <= 256)
514	>	ourrank = rankings[1];
515	>	else {
516	>	ourrank = rankings[0];
517	>	maxcolors = 256;
518	>	}
519	>	/* find best visual */
520	>	ourvis.screen = ourscreen;
521	>	xvi = XGetVisualInfo(thedisplay,VisualScreenMask,&ourvis,&vismatched);
522	>	if (xvi == NULL)
523	>	quiterr("no visuals for this screen!");
524	>	#ifdef DEBUG
525	>	fprintf(stderr, "Supported visuals:\n");
526	>	for (i = 0; i < vismatched; i++)
527	>	fprintf(stderr, "\ttype %s, depth %d\n",
528	>	vistype[xvi[i].class], xvi[i].depth);
529	>	#endif
530	>	for (i = 0, j = 1; j < vismatched; j++)
531	>	if (viscmp(&xvi[i],&xvi[j]) > 0)
532	>	i = j;
533	>	/* compare to least acceptable */
534	>	for (j = 0; ourrank[j++] != -1; )
535	>	;
536	>	ourvis.class = ourrank[--j];
537	>	ourvis.depth = 1;
538	>	if (viscmp(&xvi[i],&ourvis) > 0)
539	>	quiterr("inadequate visuals on this screen");
540	>	/* OK, we'll use it */
541	>	ourvis = xvi[i];
542	>	#ifdef DEBUG
543	>	fprintf(stderr, "Selected visual type %s, depth %d\n",
544	>	vistype[ourvis.class], ourvis.depth);
545	>	#endif
546	>	/* make appropriate adjustments */
547	>	if (ourvis.class == GrayScale || ourvis.class == StaticGray)
548	>	greyscale = 1;
549	>	if (ourvis.depth <= 8 && ourvis.colormap_size < maxcolors)
550	>	maxcolors = ourvis.colormap_size;
551	>	if (ourvis.class == StaticGray) {
552	>	ourblack = 0;
553	>	ourwhite = 255;
554	>	} else if (ourvis.class == PseudoColor) {
555	>	ourblack = BlackPixel(thedisplay,ourscreen);
556	>	ourwhite = WhitePixel(thedisplay,ourscreen);
557	>	if ((ourblack|ourwhite) & ~255L) {
558	>	ourblack = 0;
559	>	ourwhite = 1;
560	>	}
561	>	if (maxcolors > 4)
562	>	maxcolors -= 2;
563	>	} else {
564	>	ourblack = 0;
565	>	ourwhite = ourvis.red_mask|ourvis.green_mask|ourvis.blue_mask;
566	>	}
567	>	XFree((char *)xvi);
568		}
569
570
571	<	getras()                                /* get raster file */
571	>	static void
572	>	getras(void)                            /* get raster file */
573		{
299	–	colormap        ourmap;
300	–	XVisualInfo     vinfo;
301	–
574		if (maxcolors <= 2) {           /* monochrome */
575		ourdata = (unsigned char *)malloc(ymax*((xmax+7)/8));
576		if (ourdata == NULL)
577		goto fail;
578	<	ourras = make_raster(thedisplay, ourscreen, 1, ourdata,
578	>	ourras = make_raster(thedisplay, &ourvis, 1, (char *)ourdata,
579		xmax, ymax, 8);
580		if (ourras == NULL)
581		goto fail;
582		getmono();
583	<	} else if (XMatchVisualInfo(thedisplay,ourscreen,24,TrueColor,&vinfo)
584	<	/* kludge for DirectColor */
585	<	|| XMatchVisualInfo(thedisplay,ourscreen,24,DirectColor,&vinfo)) {
314	<	ourdata = (unsigned char *)malloc(xmax*ymax*3);
583	>	} else if ((ourvis.class == TrueColor) | (ourvis.class == DirectColor)) {
584	>	int  datsiz = ourvis.depth>16 ? sizeof(int32) : sizeof(int16);
585	>	ourdata = (unsigned char *)malloc(datsiz*xmax*ymax);
586		if (ourdata == NULL)
587		goto fail;
588	<	ourras = make_raster(thedisplay, ourscreen, 24, ourdata,
589	<	xmax, ymax, 8);
588	>	ourras = make_raster(thedisplay, &ourvis, datsiz*8,
589	>	(char *)ourdata, xmax, ymax, datsiz*8);
590		if (ourras == NULL)
591		goto fail;
592		getfull();
#	Line 323 | Line 594 | getras()                               /* get raster file */
594		ourdata = (unsigned char *)malloc(xmax*ymax);
595		if (ourdata == NULL)
596		goto fail;
597	<	ourras = make_raster(thedisplay, ourscreen, 8, ourdata,
597	>	ourras = make_raster(thedisplay, &ourvis, 8, (char *)ourdata,
598		xmax, ymax, 8);
599		if (ourras == NULL)
600		goto fail;
601		if (greyscale)
602	<	biq(dither,maxcolors,1,ourmap);
602	>	getgrey();
603		else
604	<	ciq(dither,maxcolors,1,ourmap);
605	<	if (init_rcolors(ourras, ourmap[0], ourmap[1], ourmap[2]) == 0)
604	>	getmapped();
605	>	if (ourvis.class != StaticGray && !init_rcolors(ourras,clrtab))
606		goto fail;
607		}
608		return;
609		fail:
610	<	quit("could not create raster image");
610	>	quiterr("could not create raster image");
611		}
612
613
614	<	getevent()                              /* process the next event */
614	>	static void
615	>	getevent(void)                          /* process the next event */
616		{
617	<	union {
346	<	XEvent  u;
347	<	XConfigureEvent  c;
348	<	XExposeEvent  e;
349	<	XButtonPressedEvent  b;
350	<	XKeyPressedEvent  k;
351	<	} e;
617	>	XEvent xev;
618
619	<	XNextEvent(thedisplay, &e.u);
620	<	switch (e.u.type) {
619	>	XNextEvent(thedisplay, &xev);
620	>	switch ((int)xev.type) {
621		case KeyPress:
622	<	docom(&e.k);
622	>	docom(&xev.xkey);
623		break;
624		case ConfigureNotify:
625	<	width = e.c.width;
626	<	height = e.c.height;
625	>	width = xev.xconfigure.width;
626	>	height = xev.xconfigure.height;
627		break;
628		case MapNotify:
629		map_rcolors(ourras, wind);
630		if (fast)
631	<	make_rpixmap(ourras);
631	>	make_rpixmap(ourras, wind);
632	>	if ((!sequential) & (parent < 0) & (sigrecv == 0)) {
633	>	kill(getppid(), SIGCONT);
634	>	sigrecv--;
635	>	}
636		break;
637		case UnmapNotify:
638	<	unmap_rcolors(ourras);
638	>	if (!fast)
639	>	unmap_rcolors(ourras);
640		break;
641		case Expose:
642	<	redraw(e.e.x, e.e.y, e.e.width, e.e.height);
642	>	redraw(xev.xexpose.x, xev.xexpose.y,
643	>	xev.xexpose.width, xev.xexpose.height);
644		break;
645		case ButtonPress:
646	<	if (e.b.state & (ShiftMask|ControlMask))
647	<	moveimage(&e.b);
646	>	if (xev.xbutton.state & (ShiftMask|ControlMask))
647	>	moveimage(&xev.xbutton);
648		else
649	<	getbox(&e.b);
649	>	switch (xev.xbutton.button) {
650	>	case Button1:
651	>	getbox(&xev.xbutton);
652	>	break;
653	>	case Button2:
654	>	traceray(xev.xbutton.x, xev.xbutton.y);
655	>	break;
656	>	case Button3:
657	>	trackrays(&xev.xbutton);
658	>	break;
659	>	}
660		break;
661	+	case ClientMessage:
662	+	if ((xev.xclient.message_type == wmProtocolsAtom) &&
663	+	(xev.xclient.data.l[0] == closedownAtom))
664	+	quiterr(NULL);
665	+	break;
666		}
667		}
668
669
670	<	docom(ekey)                                     /* execute command */
671	<	XKeyPressedEvent  *ekey;
670	>	static int
671	>	traceray(                       /* print requested pixel data */
672	>	int  xpos,
673	>	int  ypos
674	>	)
675		{
676	+	RREAL  hv[2];
677	+	FVECT  rorg, rdir;
678	+	COLOR  cval;
679	+	register char  *cp;
680	+
681	+	bbox.xmin = xpos; bbox.xsiz = 1;
682	+	bbox.ymin = ypos; bbox.ysiz = 1;
683	+	avgbox(cval);
684	+	scalecolor(cval, 1./exposure);
685	+	pix2loc(hv, &inpres, xpos-xoff, ypos-yoff);
686	+	if (!gotview || viewray(rorg, rdir, &ourview, hv[0], hv[1]) < 0)
687	+	rorg[0] = rorg[1] = rorg[2] =
688	+	rdir[0] = rdir[1] = rdir[2] = 0.;
689	+
690	+	for (cp = tout; *cp; cp++)      /* print what they asked for */
691	+	switch (*cp) {
692	+	case 'o':                       /* origin */
693	+	printf("%e %e %e ", rorg[0], rorg[1], rorg[2]);
694	+	break;
695	+	case 'd':                       /* direction */
696	+	printf("%e %e %e ", rdir[0], rdir[1], rdir[2]);
697	+	break;
698	+	case 'v':                       /* radiance value */
699	+	printf("%e %e %e ", colval(cval,RED),
700	+	colval(cval,GRN), colval(cval,BLU));
701	+	break;
702	+	case 'l':                       /* luminance */
703	+	printf("%e ", luminance(cval));
704	+	break;
705	+	case 'p':                       /* pixel position */
706	+	printf("%d %d ", (int)(hv[0]*inpres.xr),
707	+	(int)(hv[1]*inpres.yr));
708	+	break;
709	+	}
710	+	putchar('\n');
711	+	fflush(stdout);
712	+	return(0);
713	+	}
714	+
715	+
716	+	static int
717	+	docom(                          /* execute command */
718	+	XKeyPressedEvent  *ekey
719	+	)
720	+	{
721		char  buf[80];
722		COLOR  cval;
723		XColor  cvx;
724		int  com, n;
725		double  comp;
726	<	FVECT  rorg, rdir;
726	>	RREAL  hv[2];
727
728		n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL);
729		if (n == 0)
#	Line 396 | Line 731 | XKeyPressedEvent  *ekey;
731		com = buf[0];
732		switch (com) {                  /* interpret command */
733		case 'q':
734	<	case CTRL(D):                           /* quit */
735	<	quit(0);
734	>	case 'Q':
735	>	case CTRL('D'):                         /* quit */
736	>	quiterr(NULL);
737		case '\n':
738		case '\r':
739		case 'l':
740		case 'c':                               /* value */
741	<	if (avgbox(cval) == -1)
741	>	if (!avgbox(cval))
742		return(-1);
743		switch (com) {
744		case '\n':
#	Line 410 | Line 746 | XKeyPressedEvent  *ekey;
746		sprintf(buf, "%.3f", intens(cval)/exposure);
747		break;
748		case 'l':                               /* luminance */
749	<	sprintf(buf, "%.0fn", bright(cval)*683.0/exposure);
749	>	sprintf(buf, "%.1fL", luminance(cval)/exposure);
750		break;
751		case 'c':                               /* color */
752		comp = pow(2.0, (double)scale);
#	Line 421 | Line 757 | XKeyPressedEvent  *ekey;
757		break;
758		}
759		XDrawImageString(thedisplay, wind, ourgc,
760	<	box.xmin, box.ymin+box.ysiz, buf, strlen(buf));
760	>	bbox.xmin, bbox.ymin+bbox.ysiz, buf, strlen(buf));
761		return(0);
762		case 'i':                               /* identify (contour) */
763		if (ourras->pixels == NULL)
#	Line 436 | Line 772 | XKeyPressedEvent  *ekey;
772		XStoreColor(thedisplay, ourras->cmap, &cvx);
773		return(0);
774		case 'p':                               /* position */
775	<	sprintf(buf, "(%d,%d)", ekey->x-xoff, ymax-1-ekey->y+yoff);
775	>	pix2loc(hv, &inpres, ekey->x-xoff, ekey->y-yoff);
776	>	sprintf(buf, "(%d,%d)", (int)(hv[0]*inpres.xr),
777	>	(int)(hv[1]*inpres.yr));
778		XDrawImageString(thedisplay, wind, ourgc, ekey->x, ekey->y,
779		buf, strlen(buf));
780		return(0);
781		case 't':                               /* trace */
782	<	if (!gotview) {
783	<	XBell(thedisplay, 0);
782	>	return(traceray(ekey->x, ekey->y));
783	>	case 'a':                               /* auto exposure */
784	>	if (fname == NULL)
785		return(-1);
786	<	}
787	<	if (viewray(rorg, rdir, &ourview,
788	<	(ekey->x-xoff+.5)/xmax,
789	<	(ymax-1-ekey->y+yoff+.5)/ymax) < 0)
786	>	tmflags = TM_F_CAMERA;
787	>	strcpy(buf, "auto exposure...");
788	>	goto remap;
789	>	case 'h':                               /* human response */
790	>	if (fname == NULL)
791		return(-1);
792	<	printf("%e %e %e ", rorg[0], rorg[1], rorg[2]);
793	<	printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]);
794	<	fflush(stdout);
455	<	return(0);
792	>	tmflags = TM_F_HUMAN;
793	>	strcpy(buf, "human exposure...");
794	>	goto remap;
795		case '=':                               /* adjust exposure */
796	<	if (avgbox(cval) == -1)
796	>	case '@':                               /* adaptation level */
797	>	if (!avgbox(cval))
798		return(-1);
799	<	n = log(.5/bright(cval))/.69315 - scale;        /* truncate */
800	<	if (n == 0)
801	<	return(0);
802	<	scale_rcolors(ourras, pow(2.0, (double)n));
799	>	comp = bright(cval);
800	>	if (comp < 1e-20) {
801	>	XBell(thedisplay, 0);
802	>	return(-1);
803	>	}
804	>	if (com == '@')
805	>	comp = 106./exposure/
806	>	pow(1.219+pow(comp*WHTEFFICACY/exposure,.4),2.5);
807	>	else
808	>	comp = .5/comp;
809	>	comp = log(comp)/.69315 - scale;
810	>	n = comp < 0 ? comp-.5 : comp+.5 ;      /* round */
811	>	if (tmflags != TM_F_LINEAR)
812	>	tmflags = TM_F_LINEAR;  /* turn off tone mapping */
813	>	else {
814	>	if (n == 0)             /* else check if any change */
815	>	return(0);
816	>	scale_rcolors(ourras, pow(2.0, (double)n));
817	>	}
818		scale += n;
819		sprintf(buf, "%+d", scale);
820	+	remap:
821		XDrawImageString(thedisplay, wind, ourgc,
822	<	box.xmin, box.ymin+box.ysiz, buf, strlen(buf));
822	>	bbox.xmin, bbox.ymin+bbox.ysiz, buf, strlen(buf));
823		XFlush(thedisplay);
824	<	free(ourdata);
824	>	/* free(ourdata);       This is done in XDestroyImage()! */
825		free_raster(ourras);
826		getras();
827		/* fall through */
828	<	case CTRL(R):                           /* redraw */
829	<	case CTRL(L):
828	>	case CTRL('R'):                         /* redraw */
829	>	case CTRL('L'):
830		unmap_rcolors(ourras);
831		XClearWindow(thedisplay, wind);
832		map_rcolors(ourras, wind);
833		if (fast)
834	<	make_rpixmap(ourras);
834	>	make_rpixmap(ourras, wind);
835		redraw(0, 0, width, height);
836		return(0);
837	+	case 'f':                               /* turn on fast redraw */
838	+	fast = 1;
839	+	make_rpixmap(ourras, wind);
840	+	return(0);
841	+	case 'F':                               /* turn off fast redraw */
842	+	fast = 0;
843	+	free_rpixmap(ourras);
844	+	return(0);
845	+	case '0':                               /* recenter origin */
846	+	if ((xoff == 0) & (yoff == 0))
847	+	return(0);
848	+	xoff = yoff = 0;
849	+	XClearWindow(thedisplay, wind);
850	+	redraw(0, 0, width, height);
851	+	return(0);
852		case ' ':                               /* clear */
853	<	redraw(box.xmin, box.ymin, box.xsiz, box.ysiz);
853	>	redraw(bbox.xmin, bbox.ymin, bbox.xsiz, bbox.ysiz);
854		return(0);
855		default:
856		XBell(thedisplay, 0);
#	Line 488 | Line 859 | XKeyPressedEvent  *ekey;
859		}
860
861
862	<	moveimage(ebut)                         /* shift the image */
863	<	XButtonPressedEvent  *ebut;
862	>	static void
863	>	moveimage(                              /* shift the image */
864	>	XButtonPressedEvent  *ebut
865	>	)
866		{
867	<	union {
495	<	XEvent  u;
496	<	XButtonReleasedEvent  b;
497	<	XPointerMovedEvent  m;
498	<	}  e;
867	>	XEvent  e;
868		int     mxo, myo;
869
870	<	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e.u);
871	<	while (e.u.type == MotionNotify) {
872	<	mxo = e.m.x;
873	<	myo = e.m.y;
870	>	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e);
871	>	while (e.type == MotionNotify) {
872	>	mxo = e.xmotion.x;
873	>	myo = e.xmotion.y;
874		revline(ebut->x, ebut->y, mxo, myo);
875		revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y,
876		xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax);
877	<	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e.u);
877	>	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e);
878		revline(ebut->x, ebut->y, mxo, myo);
879		revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y,
880		xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax);
881		}
882	<	xoff += e.b.x - ebut->x;
883	<	yoff += e.b.y - ebut->y;
882	>	xoff += e.xbutton.x - ebut->x;
883	>	yoff += e.xbutton.y - ebut->y;
884		XClearWindow(thedisplay, wind);
885		redraw(0, 0, width, height);
886		}
887
888
889	<	getbox(ebut)                            /* get new box */
890	<	XButtonPressedEvent  *ebut;
889	>	static void
890	>	getbox(                         /* get new bbox */
891	>	XButtonPressedEvent  *ebut
892	>	)
893		{
894	<	union {
524	<	XEvent  u;
525	<	XButtonReleasedEvent  b;
526	<	XPointerMovedEvent  m;
527	<	}  e;
894	>	XEvent  e;
895
896	<	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e.u);
897	<	while (e.u.type == MotionNotify) {
898	<	revbox(ebut->x, ebut->y, box.xmin = e.m.x, box.ymin = e.m.y);
899	<	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e.u);
900	<	revbox(ebut->x, ebut->y, box.xmin, box.ymin);
896	>	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e);
897	>	while (e.type == MotionNotify) {
898	>	revbox(ebut->x, ebut->y, bbox.xmin = e.xmotion.x, bbox.ymin = e.xmotion.y);
899	>	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e);
900	>	revbox(ebut->x, ebut->y, bbox.xmin, bbox.ymin);
901		}
902	<	box.xmin = e.b.x<0 ? 0 : (e.b.x>=width ? width-1 : e.b.x);
903	<	box.ymin = e.b.y<0 ? 0 : (e.b.y>=height ? height-1 : e.b.y);
904	<	if (box.xmin > ebut->x) {
905	<	box.xsiz = box.xmin - ebut->x + 1;
906	<	box.xmin = ebut->x;
902	>	bbox.xmin = e.xbutton.x<0 ? 0 : (e.xbutton.x>=width ? width-1 : e.xbutton.x);
903	>	bbox.ymin = e.xbutton.y<0 ? 0 : (e.xbutton.y>=height ? height-1 : e.xbutton.y);
904	>	if (bbox.xmin > ebut->x) {
905	>	bbox.xsiz = bbox.xmin - ebut->x + 1;
906	>	bbox.xmin = ebut->x;
907		} else {
908	<	box.xsiz = ebut->x - box.xmin + 1;
908	>	bbox.xsiz = ebut->x - bbox.xmin + 1;
909		}
910	<	if (box.ymin > ebut->y) {
911	<	box.ysiz = box.ymin - ebut->y + 1;
912	<	box.ymin = ebut->y;
910	>	if (bbox.ymin > ebut->y) {
911	>	bbox.ysiz = bbox.ymin - ebut->y + 1;
912	>	bbox.ymin = ebut->y;
913		} else {
914	<	box.ysiz = ebut->y - box.ymin + 1;
914	>	bbox.ysiz = ebut->y - bbox.ymin + 1;
915		}
916		}
917
918
919	<	revbox(x0, y0, x1, y1)                  /* draw box with reversed lines */
920	<	int  x0, y0, x1, y1;
919	>	static void
920	>	trackrays(                              /* trace rays as mouse moves */
921	>	XButtonPressedEvent  *ebut
922	>	)
923		{
924	+	XEvent  e;
925	+	unsigned long   lastrept;
926	+
927	+	traceray(ebut->x, ebut->y);
928	+	lastrept = ebut->time;
929	+	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e);
930	+	while (e.type == MotionNotify) {
931	+	if (e.xmotion.time >= lastrept + tinterv) {
932	+	traceray(e.xmotion.x, e.xmotion.y);
933	+	lastrept = e.xmotion.time;
934	+	}
935	+	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e);
936	+	}
937	+	}
938	+
939	+
940	+	static void
941	+	revbox(                 /* draw bbox with reversed lines */
942	+	int  x0,
943	+	int  y0,
944	+	int  x1,
945	+	int  y1
946	+	)
947	+	{
948		revline(x0, y0, x1, y0);
949		revline(x0, y1, x1, y1);
950		revline(x0, y0, x0, y1);
#	Line 559 | Line 952 | int  x0, y0, x1, y1;
952		}
953
954
955	<	avgbox(clr)                             /* average color over current box */
956	<	COLOR  clr;
955	>	static void
956	>	colavg(
957	>	register COLR   *scn,
958	>	register int    n,
959	>	void *cavg
960	>	)
961		{
962	+	COLOR   col;
963	+
964	+	while (n--) {
965	+	colr_color(col, *scn++);
966	+	addcolor((COLORV*)cavg, col);
967	+	}
968	+	}
969	+
970	+
971	+	static int
972	+	avgbox(                         /* average color over current bbox */
973	+	COLOR   cavg
974	+	)
975	+	{
976	+	double  d;
977	+	register int    rval;
978	+
979	+	setcolor(cavg, 0., 0., 0.);
980	+	rval = dobox(colavg, (void *)cavg);
981	+	if (rval > 0) {
982	+	d = 1./rval;
983	+	scalecolor(cavg, d);
984	+	}
985	+	return(rval);
986	+	}
987	+
988	+
989	+	static int
990	+	dobox(                          /* run function over bbox */
991	+	//void  (*f)(),                 /* function to call for each subscan */
992	+	doboxf_t *f,                    /* function to call for each subscan */
993	+	void    *p                      /* pointer to private data */
994	+	)
995	+	{
996		int  left, right, top, bottom;
997		int  y;
567	–	double  d;
568	–	COLOR  ctmp;
569	–	register int  x;
998
999	<	setcolor(clr, 0.0, 0.0, 0.0);
1000	<	left = box.xmin - xoff;
573	<	right = left + box.xsiz;
999	>	left = bbox.xmin - xoff;
1000	>	right = left + bbox.xsiz;
1001		if (left < 0)
1002		left = 0;
1003		if (right > xmax)
1004		right = xmax;
1005		if (left >= right)
1006	<	return(-1);
1007	<	top = box.ymin - yoff;
1008	<	bottom = top + box.ysiz;
1006	>	return(0);
1007	>	top = bbox.ymin - yoff;
1008	>	bottom = top + bbox.ysiz;
1009		if (top < 0)
1010		top = 0;
1011		if (bottom > ymax)
1012		bottom = ymax;
1013		if (top >= bottom)
1014	<	return(-1);
1014	>	return(0);
1015		for (y = top; y < bottom; y++) {
1016		if (getscan(y) == -1)
1017		return(-1);
1018	<	for (x = left; x < right; x++) {
1019	<	colr_color(ctmp, scanline[x]);
1020	<	addcolor(clr, ctmp);
1018	>	(*f)(scanline+left, right-left, p);
1019	>	}
1020	>	return((right-left)*(bottom-top));
1021	>	}
1022	>
1023	>
1024	>	static void
1025	>	addfix(                 /* add fixation points to histogram */
1026	>	COLR    *scn,
1027	>	int     n,
1028	>	void    *p
1029	>	)
1030	>	{
1031	>	TMstruct *      tms = (TMstruct *)p;
1032	>
1033	>	if (tmCvColrs(tms, lscan, TM_NOCHROM, scn, n))
1034	>	goto tmerr;
1035	>	if (tmAddHisto(tms, lscan, n, FIXWEIGHT))
1036	>	goto tmerr;
1037	>	return;
1038	>	tmerr:
1039	>	quiterr("tone mapping error");
1040	>	}
1041	>
1042	>
1043	>	static void
1044	>	make_tonemap(void)                      /* initialize tone mapping */
1045	>	{
1046	>	int  flags, y;
1047	>
1048	>	if (tmflags != TM_F_LINEAR && fname == NULL) {
1049	>	fprintf(stderr, "%s: cannot adjust tone of standard input\n",
1050	>	progname);
1051	>	tmflags = TM_F_LINEAR;
1052	>	}
1053	>	if (tmflags == TM_F_LINEAR) {   /* linear with clamping */
1054	>	setcolrcor(pow, 1.0/gamcor);
1055	>	return;
1056	>	}
1057	>	flags = tmflags;                /* histogram adjustment */
1058	>	if (greyscale) flags |= TM_F_BW;
1059	>	if (tmGlobal != NULL) {         /* reuse old histogram if one */
1060	>	tmDone(tmCurrent); tmCurrent = NULL;
1061	>	tmGlobal->flags = flags;
1062	>	} else {                        /* else initialize */
1063	>	if ((lscan = (TMbright *)malloc(xmax*sizeof(TMbright))) == NULL)
1064	>	goto memerr;
1065	>	if (greyscale) {
1066	>	cscan = TM_NOCHROM;
1067	>	if ((pscan = (uby8 *)malloc(sizeof(uby8)*xmax)) == NULL)
1068	>	goto memerr;
1069	>	} else if ((pscan=cscan = (uby8 *)malloc(3*sizeof(uby8)*xmax))
1070	>	== NULL)
1071	>	goto memerr;
1072	>	/* initialize tm library */
1073	>	tmGlobal = tmInit(flags, stdprims, gamcor);
1074	>	if (tmGlobal == NULL)
1075	>	goto memerr;
1076	>	if (tmSetSpace(tmGlobal, stdprims, WHTEFFICACY/exposure, NULL))
1077	>	goto tmerr;
1078	>	/* compute picture histogram */
1079	>	for (y = 0; y < ymax; y++) {
1080	>	getscan(y);
1081	>	if (tmCvColrs(tmGlobal, lscan, TM_NOCHROM,
1082	>	scanline, xmax))
1083	>	goto tmerr;
1084	>	if (tmAddHisto(tmGlobal, lscan, xmax, 1))
1085	>	goto tmerr;
1086		}
1087		}
1088	<	d = 1.0/((right-left)*(bottom-top));
1089	<	scalecolor(clr, d);
1090	<	return(0);
1088	>	tmCurrent = tmDup(tmGlobal);    /* add fixations to duplicate map */
1089	>	dobox(addfix, (void *)tmCurrent);
1090	>	/* (re)compute tone mapping */
1091	>	if (tmComputeMapping(tmCurrent, gamcor, 0., 0.))
1092	>	goto tmerr;
1093	>	return;
1094	>	memerr:
1095	>	quiterr("out of memory in make_tonemap");
1096	>	tmerr:
1097	>	quiterr("tone mapping error");
1098		}
1099
1100
1101	<	getmono()                       /* get monochrome data */
1101	>	static void
1102	>	tmap_colrs(             /* apply tone mapping to scanline */
1103	>	register COLR  *scn,
1104	>	int  len
1105	>	)
1106		{
1107	+	register uby8  *ps;
1108	+
1109	+	if (tmflags == TM_F_LINEAR) {
1110	+	if (scale)
1111	+	shiftcolrs(scn, len, scale);
1112	+	colrs_gambs(scn, len);
1113	+	return;
1114	+	}
1115	+	if (len > xmax)
1116	+	quiterr("code error 1 in tmap_colrs");
1117	+	if (tmCvColrs(tmCurrent, lscan, cscan, scn, len))
1118	+	goto tmerr;
1119	+	if (tmMapPixels(tmCurrent, pscan, lscan, cscan, len))
1120	+	goto tmerr;
1121	+	ps = pscan;
1122	+	if (greyscale)
1123	+	while (len--) {
1124	+	scn[0][RED] = scn[0][GRN] = scn[0][BLU] = *ps++;
1125	+	scn[0][EXP] = COLXS;
1126	+	scn++;
1127	+	}
1128	+	else
1129	+	while (len--) {
1130	+	scn[0][RED] = *ps++;
1131	+	scn[0][GRN] = *ps++;
1132	+	scn[0][BLU] = *ps++;
1133	+	scn[0][EXP] = COLXS;
1134	+	scn++;
1135	+	}
1136	+	return;
1137	+	tmerr:
1138	+	quiterr("tone mapping error");
1139	+	}
1140	+
1141	+
1142	+	static void
1143	+	getmono(void)                   /* get monochrome data */
1144	+	{
1145		register unsigned char  *dp;
1146		register int    x, err;
1147	<	int     y;
607	<	rgbpixel        *inl;
1147	>	int     y, errp;
1148		short   *cerr;
1149
1150	<	if ((inl = (rgbpixel *)malloc(xmax*sizeof(rgbpixel))) == NULL
1151	<	|| (cerr = (short *)calloc(xmax,sizeof(short))) == NULL)
612	<	quit("out of memory in getmono");
1150	>	if ((cerr = (short *)calloc(xmax,sizeof(short))) == NULL)
1151	>	quiterr("out of memory in getmono");
1152		dp = ourdata - 1;
1153		for (y = 0; y < ymax; y++) {
1154	<	picreadline3(y, inl);
1154	>	getscan(y);
1155	>	add2icon(y, scanline);
1156	>	normcolrs(scanline, xmax, scale);
1157		err = 0;
1158		for (x = 0; x < xmax; x++) {
1159		if (!(x&7))
1160		*++dp = 0;
1161	<	err += rgb_bright(&inl[x]) + cerr[x];
1161	>	errp = err;
1162	>	err += normbright(scanline[x]) + cerr[x];
1163		if (err > 127)
1164		err -= 255;
1165		else
1166		*dp |= 1<<(7-(x&07));
1167	<	cerr[x] = err >>= 1;
1167	>	err /= 3;
1168	>	cerr[x] = err + errp;
1169		}
1170		}
1171	<	free((char *)inl);
629	<	free((char *)cerr);
1171	>	free((void *)cerr);
1172		}
1173
1174
1175	<	getfull()                       /* get full (24-bit) data */
1175	>	static void
1176	>	add2icon(               /* add a scanline to our icon data */
1177	>	int  y,
1178	>	COLR  *scan
1179	>	)
1180		{
1181	+	static short  cerr[ICONSIZ];
1182	+	static int  ynext;
1183	+	static char  *dp;
1184	+	COLR  clr;
1185	+	register int  err;
1186	+	register int    x, ti;
1187	+	int  errp;
1188	+
1189	+	if (iconheight == 0) {          /* initialize */
1190	+	if (xmax <= ICONSIZ && ymax <= ICONSIZ) {
1191	+	iconwidth = xmax;
1192	+	iconheight = ymax;
1193	+	} else if (xmax > ymax) {
1194	+	iconwidth = ICONSIZ;
1195	+	iconheight = ICONSIZ*ymax/xmax;
1196	+	if (iconheight < 1)
1197	+	iconheight = 1;
1198	+	} else {
1199	+	iconwidth = ICONSIZ*xmax/ymax;
1200	+	if (iconwidth < 1)
1201	+	iconwidth = 1;
1202	+	iconheight = ICONSIZ;
1203	+	}
1204	+	ynext = 0;
1205	+	dp = icondata - 1;
1206	+	}
1207	+	if (y < ynext*ymax/iconheight)  /* skip this one */
1208	+	return;
1209	+	err = 0;
1210	+	for (x = 0; x < iconwidth; x++) {
1211	+	if (!(x&7))
1212	+	*++dp = 0;
1213	+	errp = err;
1214	+	ti = x*xmax/iconwidth;
1215	+	copycolr(clr, scan[ti]);
1216	+	normcolrs(&clr, 1, scale);
1217	+	err += normbright(clr) + cerr[x];
1218	+	if (err > 127)
1219	+	err -= 255;
1220	+	else
1221	+	*dp |= 1<<(x&07);
1222	+	err /= 3;
1223	+	cerr[x] = err + errp;
1224	+	}
1225	+	ynext++;
1226	+	}
1227	+
1228	+
1229	+	static void
1230	+	getfull(void)                   /* get full (24-bit) data */
1231	+	{
1232		int     y;
1233	+	register uint32 *dp;
1234	+	register uint16 *dph;
1235	+	register int    x;
1236	+	/* initialize tone mapping */
1237	+	make_tonemap();
1238	+	/* read and convert file */
1239	+	dp = (uint32 *)ourdata;
1240	+	dph = (uint16 *)ourdata;
1241	+	for (y = 0; y < ymax; y++) {
1242	+	getscan(y);
1243	+	add2icon(y, scanline);
1244	+	tmap_colrs(scanline, xmax);
1245	+	switch (ourras->image->blue_mask) {
1246	+	case 0xff:              /* 24-bit RGB */
1247	+	for (x = 0; x < xmax; x++)
1248	+	*dp++ = (uint32)scanline[x][RED] << 16 |
1249	+	(uint32)scanline[x][GRN] << 8 |
1250	+	(uint32)scanline[x][BLU] ;
1251	+	break;
1252	+	case 0xff0000:          /* 24-bit BGR */
1253	+	for (x = 0; x < xmax; x++)
1254	+	*dp++ = (uint32)scanline[x][RED] |
1255	+	(uint32)scanline[x][GRN] << 8 |
1256	+	(uint32)scanline[x][BLU] << 16 ;
1257	+	break;
1258	+	#if 0
1259	+	case 0x1f:              /* 15-bit RGB */
1260	+	for (x = 0; x < xmax; x++)
1261	+	*dph++ =        (scanline[x][RED] << 7 & 0x7c00) |
1262	+	(scanline[x][GRN] << 2 & 0x3e0) |
1263	+	(unsigned)scanline[x][BLU] >> 3 ;
1264	+	break;
1265	+	case 0x7c00:            /* 15-bit BGR */
1266	+	for (x = 0; x < xmax; x++)
1267	+	*dph++ =        (unsigned)scanline[x][RED] >> 3 |
1268	+	(scanline[x][GRN] << 2 & 0x3e0) |
1269	+	(scanline[x][BLU] << 7 & 0x7c00) ;
1270	+	break;
1271	+	#endif
1272	+	default:                /* unknown */
1273	+	if (ourvis.depth > 16)
1274	+	for (x = 0; x < xmax; x++) {
1275	+	*dp = ourras->image->red_mask &
1276	+	ourras->image->red_mask*scanline[x][RED]/255;
1277	+	*dp |= ourras->image->green_mask &
1278	+	ourras->image->green_mask*scanline[x][GRN]/255;
1279	+	*dp++ |= ourras->image->blue_mask &
1280	+	ourras->image->blue_mask*scanline[x][BLU]/255;
1281	+	}
1282	+	else
1283	+	for (x = 0; x < xmax; x++) {
1284	+	*dph = ourras->image->red_mask &
1285	+	ourras->image->red_mask*scanline[x][RED]/255;
1286	+	*dph |= ourras->image->green_mask &
1287	+	ourras->image->green_mask*scanline[x][GRN]/255;
1288	+	*dph++ |= ourras->image->blue_mask &
1289	+	ourras->image->blue_mask*scanline[x][BLU]/255;
1290	+	}
1291	+	break;
1292	+	}
1293	+	}
1294	+	}
1295
1296	<	for (y = 0; y < ymax; y++)
1297	<	picreadline3(y, (rgbpixel *)(ourdata+y*xmax*3));
1296	>
1297	>	static void
1298	>	getgrey(void)                   /* get greyscale data */
1299	>	{
1300	>	int     y;
1301	>	register unsigned char  *dp;
1302	>	register int    x;
1303	>	/* initialize tone mapping */
1304	>	make_tonemap();
1305	>	/* read and convert file */
1306	>	dp = ourdata;
1307	>	for (y = 0; y < ymax; y++) {
1308	>	getscan(y);
1309	>	add2icon(y, scanline);
1310	>	tmap_colrs(scanline, xmax);
1311	>	if (maxcolors < 256)
1312	>	for (x = 0; x < xmax; x++)
1313	>	*dp++ = ((int32)scanline[x][GRN] *
1314	>	maxcolors + maxcolors/2) >> 8;
1315	>	else
1316	>	for (x = 0; x < xmax; x++)
1317	>	*dp++ = scanline[x][GRN];
1318	>	}
1319	>	for (x = 0; x < maxcolors; x++)
1320	>	clrtab[x][RED] = clrtab[x][GRN] =
1321	>	clrtab[x][BLU] = ((int32)x*256 + 128)/maxcolors;
1322		}
1323
1324
1325	<	scale_rcolors(xr, sf)                   /* scale color map */
1326	<	register XRASTER        *xr;
644	<	double  sf;
1325	>	static void
1326	>	getmapped(void)                 /* get color-mapped data */
1327		{
1328	+	int     y;
1329	+	/* make sure we can do it first */
1330	+	if (fname == NULL)
1331	+	quiterr("cannot map colors from standard input");
1332	+	/* initialize tone mapping */
1333	+	make_tonemap();
1334	+	/* make histogram */
1335	+	if (new_histo((int32)xmax*ymax) == -1)
1336	+	quiterr("cannot initialize histogram");
1337	+	for (y = 0; y < ymax; y++) {
1338	+	if (getscan(y) < 0)
1339	+	break;
1340	+	add2icon(y, scanline);
1341	+	tmap_colrs(scanline, xmax);
1342	+	cnt_colrs(scanline, xmax);
1343	+	}
1344	+	/* map pixels */
1345	+	if (!new_clrtab(maxcolors))
1346	+	quiterr("cannot create color map");
1347	+	for (y = 0; y < ymax; y++) {
1348	+	getscan(y);
1349	+	tmap_colrs(scanline, xmax);
1350	+	if (dither)
1351	+	dith_colrs(ourdata+y*xmax, scanline, xmax);
1352	+	else
1353	+	map_colrs(ourdata+y*xmax, scanline, xmax);
1354	+	}
1355	+	}
1356	+
1357	+
1358	+	static void
1359	+	scale_rcolors(                  /* scale color map */
1360	+	register XRASTER        *xr,
1361	+	double  sf
1362	+	)
1363	+	{
1364		register int    i;
1365		long    maxv;
1366
#	Line 667 | Line 1385 | double sf;
1385		}
1386
1387
1388	<	getscan(y)
1389	<	int  y;
1388	>	static int
1389	>	getscan(
1390	>	int  y
1391	>	)
1392		{
1393	+	static int  trunced = -1;               /* truncated file? */
1394	+	skipit:
1395	+	if (trunced >= 0 && y >= trunced) {
1396	+	memset(scanline, '\0', xmax*sizeof(COLR));
1397	+	return(-1);
1398	+	}
1399		if (y != cury) {
1400		if (scanpos == NULL || scanpos[y] == -1)
1401		return(-1);
1402		if (fseek(fin, scanpos[y], 0) == -1)
1403	<	quit("fseek error");
1403	>	quiterr("fseek error");
1404		cury = y;
1405	<	} else if (scanpos != NULL)
1405	>	} else if (scanpos != NULL && scanpos[y] == -1)
1406		scanpos[y] = ftell(fin);
1407
1408	<	if (freadcolrs(scanline, xmax, fin) < 0)
1409	<	quiterr("read error");
1410	<
1408	>	if (fread2colrs(scanline, xmax, fin, NCSAMP, WLPART) < 0) {
1409	>	fprintf(stderr, "%s: %s: unfinished picture\n",
1410	>	progname, fname==NULL?"<stdin>":fname);
1411	>	trunced = y;
1412	>	goto skipit;
1413	>	}
1414		cury++;
1415		return(0);
687	–	}
688	–
689	–
690	–	picreadline3(y, l3)                     /* read in 3-byte scanline */
691	–	int  y;
692	–	register rgbpixel  *l3;
693	–	{
694	–	register int    i;
695	–	/* read scanline */
696	–	if (getscan(y) < 0)
697	–	quiterr("cannot seek for picreadline");
698	–	/* convert scanline */
699	–	normcolrs(scanline, xmax, scale);
700	–	for (i = 0; i < xmax; i++) {
701	–	l3[i].r = scanline[i][RED];
702	–	l3[i].g = scanline[i][GRN];
703	–	l3[i].b = scanline[i][BLU];
704	–	}
705	–	}
706	–
707	–
708	–	picwriteline(y, l)              /* add 8-bit scanline to image */
709	–	int  y;
710	–	pixel  *l;
711	–	{
712	–	bcopy((char *)l, (char *)ourdata+y*xmax, xmax);
713	–	}
714	–
715	–
716	–	picreadcm(map)                  /* do gamma correction */
717	–	colormap  map;
718	–	{
719	–	extern double  pow();
720	–	register int  i, val;
721	–
722	–	for (i = 0; i < 256; i++) {
723	–	val = pow(i/256.0, 1.0/gamcor) * 256.0;
724	–	map[0][i] = map[1][i] = map[2][i] = val;
725	–	}
726	–	}
727	–
728	–
729	–	picwritecm(map)                 /* handled elsewhere */
730	–	colormap  map;
731	–	{
732	–	#ifdef DEBUG
733	–	register int i;
734	–
735	–	for (i = 0; i < 256; i++)
736	–	printf("%d %d %d\n", map[0][i],map[1][i],map[2][i]);
737	–	#endif
1416		}

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