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root/radiance/src/hd/rhd_x11.c

Comparing src/hd/rhd_x11.c (file contents):
Revision 3.1 by gregl, Wed Nov 19 18:01:03 1997 UTC vs.
Revision 3.16 by gregl, Fri Dec 12 11:31:55 1997 UTC

#	Line 18 | Line 18 | static char SCCSid[] = "$SunId$ SGI";
18
19		#include  "x11icon.h"
20
21	+	#ifndef FEQ
22	+	#define FEQ(a,b)        ((a)-(b) <= FTINY && (a)-(b) >= -FTINY)
23	+	#endif
24	+
25		#define GAMMA           2.2             /* default gamma correction */
26
27	+	#define MOVPCT          7               /* percent distance to move /frame */
28	+	#define MOVDIR(b)       ((b)==Button1 ? 1 : (b)==Button2 ? 0 : -1)
29	+	#define MOVDEG          (-5)            /* degrees to orbit CW/down /frame */
30	+	#define MOVORB(s)       ((s)&ShiftMask ? 1 : (s)&ControlMask ? -1 : 0)
31	+
32		#define MINWIDTH        480             /* minimum graphics window width */
33		#define MINHEIGHT       400             /* minimum graphics window height */
34
#	Line 30 | Line 39 | static char SCCSid[] = "$SunId$ SGI";
39		#define  ourscreen      DefaultScreen(ourdisplay)
40		#define  ourroot        RootWindow(ourdisplay,ourscreen)
41		#define  ourmask        (StructureNotifyMask|ExposureMask|KeyPressMask|\
42	<	ButtonPressMask)
42	>	ButtonPressMask|ButtonReleaseMask)
43
44		#define  levptr(etype)  ((etype *)&currentevent)
45
#	Line 44 | Line 53 | static unsigned long  *pixval = NULL;  /* allocated pix
53		static unsigned long  ourblack=0, ourwhite=1;
54
55		static Display  *ourdisplay = NULL;     /* our display */
47	–
56		static XVisualInfo  ourvinfo;           /* our visual information */
49	–
57		static Window  gwind = 0;               /* our graphics window */
51	–
58		static GC  ourgc = 0;                   /* our graphics context for drawing */
53	–
59		static Colormap ourmap = 0;             /* our color map */
60
61		static double   pwidth, pheight;        /* pixel dimensions (mm) */
62
63		static int      inpresflags;            /* input result flags */
64
65	<	static int      heightlocked = 0;       /* lock vertical motion */
65	>	static int      headlocked = 0;         /* lock vertical motion */
66
67		static int  getpixels(), xnewcolr(), freepixels(), resizewindow(),
68	<	getevent(), getkey(), fixwindow();
68	>	getevent(), getkey(), moveview(), getmove(), fixwindow();
69		static unsigned long  true_pixel();
70
71
#	Line 90 | Line 95 | char  *id;
95		char  *gv;
96		double  gamval = GAMMA;
97		int  nplanes;
93	–	int  n;
98		XSetWindowAttributes    ourwinattr;
99		XWMHints  ourxwmhints;
100		XSizeHints      oursizhints;
101	+	/* set quadtree globals */
102	+	qtMinNodesiz = 2;
103		/* open display server */
104		ourdisplay = XOpenDisplay(NULL);
105		if (ourdisplay == NULL)
#	Line 155 | Line 161 | char  *id;
161		/* map the window and get its size */
162		XMapWindow(ourdisplay, gwind);
163		dev_input();
164	+	/* allocate our leaf pile */
165	+	if (!qtAllocLeaves(DisplayWidth(ourdisplay,ourscreen) *
166	+	DisplayHeight(ourdisplay,ourscreen) /
167	+	(qtMinNodesiz*qtMinNodesiz)))
168	+	error(SYSTEM, "insufficient memory for leaf storage");
169	+
170		/* figure out sensible view */
171		pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) /
172		DisplayWidth(ourdisplay, ourscreen);
#	Line 166 | Line 178 | char  *id;
178		odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres);
179		odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres);
180		odev.ifd = ConnectionNumber(ourdisplay);
169	–	/* allocate our leaf pile */
170	–	qtDepthEps = 0.02;
171	–	n = odev.hres < odev.vres ? odev.hres : odev.vres;
172	–	qtMinNodesiz = 1;
173	–	if (!qtAllocLeaves(n*n/(qtMinNodesiz*qtMinNodesiz)))
174	–	error(SYSTEM, "insufficient memory for leaf storage");
181		}
182
183
#	Line 192 | Line 198 | dev_close()                    /* close our display */
198		}
199
200
201	+	int
202		dev_view(nv)                    /* assign new driver view */
203		VIEW    *nv;
204		{
205	<	if (nv != &odev.v)
205	>	if (nv->type == VT_PAR ||               /* check view legality */
206	>	nv->horiz > 160. || nv->vert > 160.) {
207	>	error(COMMAND, "illegal view type/angle");
208	>	nv->type = VT_PER;
209	>	nv->horiz = odev.v.horiz;
210	>	nv->vert = odev.v.vert;
211	>	return(0);
212	>	}
213	>	if (nv->vfore > FTINY) {
214	>	error(COMMAND, "cannot handle fore clipping");
215	>	nv->vfore = 0.;
216	>	return(0);
217	>	}
218	>	if (nv != &odev.v) {
219	>	if (!FEQ(nv->horiz,odev.v.horiz) ||     /* resize window? */
220	>	!FEQ(nv->vert,odev.v.vert)) {
221	>	int     dw = DisplayWidth(ourdisplay,ourscreen);
222	>	int     dh = DisplayHeight(ourdisplay,ourscreen);
223	>
224	>	dw -= 25;       /* for window frame */
225	>	dh -= 50;
226	>	odev.hres = 2.*VIEWDIST/pwidth *
227	>	tan(PI/180./2.*nv->horiz);
228	>	odev.vres = 2.*VIEWDIST/pheight *
229	>	tan(PI/180./2.*nv->vert);
230	>	if (odev.hres > dw) {
231	>	odev.vres = dw * odev.vres / odev.hres;
232	>	odev.hres = dw;
233	>	}
234	>	if (odev.vres > dh) {
235	>	odev.hres = dh * odev.hres / odev.vres;
236	>	odev.vres = dh;
237	>	}
238	>	XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres);
239	>	}
240		copystruct(&odev.v, nv);
241	+	}
242		qtReplant();
243	+	return(1);
244		}
245
246
#	Line 205 | Line 248 | int
248		dev_input()                     /* get X11 input */
249		{
250		inpresflags = 0;
251	+
252		do
253		getevent();
254
#	Line 365 | Line 409 | getevent()                     /* get next event */
409		getkey(levptr(XKeyPressedEvent));
410		break;
411		case ButtonPress:
412	<	/* getmove(levptr(XButtonPressedEvent)); */
412	>	getmove(levptr(XButtonPressedEvent));
413		break;
414		}
415		}
416
417
418		static
419	+	ilclip(dp, wp)                  /* clip world coordinates to device */
420	+	int     dp[2][2];
421	+	FVECT   wp[2];
422	+	{
423	+	static FVECT    vmin = {0.,0.,0.}, vmax = {1.,1.,FHUGE};
424	+	FVECT   ip[2];
425	+	/* not exactly right, but who cares? */
426	+	viewloc(ip[0], &odev.v, wp[0]);
427	+	viewloc(ip[1], &odev.v, wp[1]);
428	+	if (!clip(ip[0], ip[1], vmin, vmax))
429	+	return(0);
430	+	dp[0][0] = ip[0][0]*odev.hres;
431	+	dp[0][1] = ip[0][1]*odev.vres;
432	+	dp[1][0] = ip[1][0]*odev.hres;
433	+	dp[1][1] = ip[1][1]*odev.vres;
434	+	return(1);
435	+	}
436	+
437	+
438	+	static
439	+	draw3dline(wp)                  /* draw 3d line in world coordinates */
440	+	FVECT   wp[2];
441	+	{
442	+	int     dp[2][2];
443	+
444	+	if (!ilclip(dp, wp))
445	+	return;
446	+	XDrawLine(ourdisplay, gwind, ourgc,
447	+	dp[0][0], odev.vres-1 - dp[0][1],
448	+	dp[1][0], odev.vres-1 - dp[1][1]);
449	+	}
450	+
451	+
452	+	static
453	+	draw_grids()                    /* draw holodeck section grids */
454	+	{
455	+	static BYTE     gridrgb[3] = {0x0, 0xff, 0xff};
456	+	unsigned long  pixel;
457	+
458	+	if (!mapped || odev.v.type != VT_PER)
459	+	return;
460	+	if (ncolors > 0)
461	+	pixel = pixval[get_pixel(gridrgb, xnewcolr)];
462	+	else
463	+	pixel = true_pixel(gridrgb);
464	+	XSetForeground(ourdisplay, ourgc, pixel);
465	+	/* draw each grid line */
466	+	gridlines(draw3dline);
467	+	}
468	+
469	+
470	+	static
471	+	moveview(dx, dy, mov, orb)      /* move our view */
472	+	int     dx, dy, mov, orb;
473	+	{
474	+	VIEW    nv;
475	+	FVECT   v1;
476	+	double  d;
477	+	register int    li;
478	+	/* start with old view */
479	+	copystruct(&nv, &odev.v);
480	+	/* change view direction */
481	+	if (mov | orb) {
482	+	if ((li = qtFindLeaf(dx, dy)) < 0)
483	+	return(0);      /* not on window */
484	+	VSUM(nv.vdir, qtL.wp[li], nv.vp, -1.);
485	+	} else {
486	+	if (viewray(nv.vp, nv.vdir, &odev.v,
487	+	(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY)
488	+	return(0);      /* outside view */
489	+	}
490	+	if (orb && mov) {               /* orbit left/right */
491	+	spinvector(nv.vdir, nv.vdir, nv.vup, MOVDEG*PI/180.*mov);
492	+	VSUM(nv.vp, qtL.wp[li], nv.vdir, -1.);
493	+	} else if (orb) {               /* orbit up/down */
494	+	fcross(v1, nv.vdir, nv.vup);
495	+	if (normalize(v1) == 0.)
496	+	return(0);
497	+	spinvector(nv.vdir, nv.vdir, v1, MOVDEG*PI/180.*orb);
498	+	VSUM(nv.vp, qtL.wp[li], nv.vdir, -1.);
499	+	} else if (mov) {               /* move forward/backward */
500	+	d = MOVPCT/100. * mov;
501	+	VSUM(nv.vp, nv.vp, nv.vdir, d);
502	+	}
503	+	if (!mov ^ !orb && headlocked) {        /* restore head height */
504	+	VSUM(v1, odev.v.vp, nv.vp, -1.);
505	+	d = DOT(v1, odev.v.vup);
506	+	VSUM(nv.vp, nv.vp, odev.v.vup, d);
507	+	}
508	+	if (setview(&nv) != NULL)
509	+	return(0);      /* illegal view */
510	+	dev_view(&nv);
511	+	inpresflags |= DFL(DC_SETVIEW);
512	+	return(1);
513	+	}
514	+
515	+
516	+	static
517	+	getmove(ebut)                           /* get view change */
518	+	XButtonPressedEvent     *ebut;
519	+	{
520	+	int     movdir = MOVDIR(ebut->button);
521	+	int     movorb = MOVORB(ebut->state);
522	+	int     oldnodesiz = qtMinNodesiz;
523	+	Window  rootw, childw;
524	+	int     rootx, rooty, wx, wy;
525	+	unsigned int    statemask;
526	+
527	+	qtMinNodesiz = 16;              /* for quicker update */
528	+	XNoOp(ourdisplay);
529	+
530	+	while (!XCheckMaskEvent(ourdisplay,
531	+	ButtonReleaseMask, levptr(XEvent))) {
532	+
533	+	if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw,
534	+	&rootx, &rooty, &wx, &wy, &statemask))
535	+	break;          /* on another screen */
536	+
537	+	if (!moveview(wx, odev.vres-1-wy, movdir, movorb)) {
538	+	sleep(1);
539	+	continue;
540	+	}
541	+	XClearWindow(ourdisplay, gwind);
542	+	qtUpdate();
543	+	draw_grids();
544	+	}
545	+	if (!(inpresflags & DFL(DC_SETVIEW))) { /* do final motion */
546	+	movdir = MOVDIR(levptr(XButtonReleasedEvent)->button);
547	+	wx = levptr(XButtonReleasedEvent)->x;
548	+	wy = levptr(XButtonReleasedEvent)->y;
549	+	moveview(wx, odev.vres-1-wy, movdir, movorb);
550	+	}
551	+	dev_flush();
552	+
553	+	qtMinNodesiz = oldnodesiz;      /* restore quadtree resolution */
554	+	}
555	+
556	+
557	+	static
558		getkey(ekey)                            /* get input key */
559		register XKeyPressedEvent  *ekey;
560		{
#	Line 383 | Line 566 | register XKeyPressedEvent  *ekey;
566		return;
567		switch (buf[0]) {
568		case 'h':                       /* turn on height motion lock */
569	<	heightlocked = 1;
569	>	headlocked = 1;
570		return;
571		case 'H':                       /* turn off height motion lock */
572	<	heightlocked = 0;
572	>	headlocked = 0;
573		return;
574	<	case 'Q':
574	>	case 'l':                       /* retrieve last view */
575	>	inpresflags |= DFL(DC_LASTVIEW);
576	>	return;
577	>	case 'p':                       /* pause computation */
578	>	inpresflags |= DFL(DC_PAUSE);
579	>	return;
580	>	case 'v':                       /* spit out view */
581	>	inpresflags |= DFL(DC_GETVIEW);
582	>	return;
583	>	case '\n':
584	>	case '\r':                      /* resume computation */
585	>	inpresflags |= DFL(DC_RESUME);
586	>	return;
587	>	case CTRL('R'):                 /* redraw screen */
588	>	if (ncolors > 0)
589	>	new_ctab(ncolors);
590	>	qtRedraw(0, 0, odev.hres, odev.vres);
591	>	return;
592	>	case CTRL('L'):                 /* refresh from server */
593	>	if (inpresflags & DFL(DC_REDRAW))
594	>	return;
595	>	XClearWindow(ourdisplay, gwind);
596	>	draw_grids();
597	>	XFlush(ourdisplay);
598	>	qtCompost(100);                 /* unload the old tree */
599	>	if (ncolors > 0)
600	>	new_ctab(ncolors);
601	>	inpresflags |= DFL(DC_REDRAW);  /* resend values from server */
602	>	return;
603	>	case 'K':                       /* kill rtrace process(es) */
604	>	inpresflags |= DFL(DC_KILL);
605	>	break;
606	>	case 'R':                       /* restart rtrace */
607	>	inpresflags |= DFL(DC_RESTART);
608	>	break;
609	>	case 'C':                       /* clobber holodeck */
610	>	inpresflags |= DFL(DC_CLOBBER);
611	>	break;
612		case 'q':                       /* quit the program */
613	<	inpresflags |= DEV_SHUTDOWN;
613	>	inpresflags |= DFL(DC_QUIT);
614		return;
615		default:
616		XBell(ourdisplay, 0);
#	Line 404 | Line 624 | fixwindow(eexp)                                /* repair damage to window */
624		register XExposeEvent  *eexp;
625		{
626		if (odev.hres == 0 || odev.vres == 0) { /* first exposure */
407	–	eputs("Resizing window in fixwindow\n");
627		odev.hres = eexp->width;
628		odev.vres = eexp->height;
410	–	inpresflags |= DEV_NEWSIZE;
629		}
630		qtRedraw(eexp->x, odev.vres - eexp->y - eexp->height,
631		eexp->x + eexp->width, odev.vres - eexp->y);
#	Line 421 | Line 639 | register XConfigureEvent  *ersz;
639		if (ersz->width == odev.hres && ersz->height == odev.vres)
640		return;
641
424	–	if (odev.hres != 0 && odev.vres != 0) {
425	–	odev.v.horiz = 2.*180./PI * atan(
426	–	tan(PI/180./2.*odev.v.horiz) * ersz->width/odev.hres );
427	–	odev.v.vert = 2.*180./PI * atan(
428	–	tan(PI/180./2.*odev.v.vert) * ersz->height/odev.vres );
429	–	inpresflags |= DEV_NEWVIEW;
430	–	}
642		odev.hres = ersz->width;
643		odev.vres = ersz->height;
644
645	<	inpresflags |= DEV_NEWSIZE;
645	>	odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres);
646	>	odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres);
647	>
648	>	inpresflags |= DFL(DC_SETVIEW);
649		}

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