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root/radiance/src/hd/rhd_x11.c
Revision: 3.33
Committed: Mon Apr 14 16:56:19 2003 UTC (22 years, 6 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 3.32: +1 -1 lines
Log Message: 
Fixed interaction delay timing (supposed to be 50ms -- was 5ms)

File Contents

# User Rev Content
1 gregl 3.1 #ifndef lint
2 greg 3.32 static const char RCSid[] = "$Id$";
3 gregl 3.1 #endif
4     /*
5     * X11 driver for holodeck display.
6     * Based on rview driver.
7     */
8    
9     #include "standard.h"
10     #include <X11/Xlib.h>
11     #include <X11/cursorfont.h>
12     #include <X11/Xutil.h>
13 greg 3.32 #include <time.h>
14 gwlarson 3.29 #include "rhd_qtree.h"
15 gregl 3.1 #include "x11icon.h"
16    
17 gregl 3.20 #ifndef RAYQLEN
18     #define RAYQLEN 50000 /* max. rays to queue before flush */
19     #endif
20    
21 gregl 3.11 #ifndef FEQ
22     #define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY)
23     #endif
24    
25 gregl 3.1 #define GAMMA 2.2 /* default gamma correction */
26    
27 gwlarson 3.30 #define FRAMESTATE(s) (((s)&(ShiftMask|ControlMask))==(ShiftMask|ControlMask))
28    
29 gregl 3.13 #define MOVPCT 7 /* percent distance to move /frame */
30 gregl 3.2 #define MOVDIR(b) ((b)==Button1 ? 1 : (b)==Button2 ? 0 : -1)
31 gregl 3.13 #define MOVDEG (-5) /* degrees to orbit CW/down /frame */
32     #define MOVORB(s) ((s)&ShiftMask ? 1 : (s)&ControlMask ? -1 : 0)
33 gregl 3.2
34 gregl 3.1 #define MINWIDTH 480 /* minimum graphics window width */
35     #define MINHEIGHT 400 /* minimum graphics window height */
36    
37     #define VIEWDIST 356 /* assumed viewing distance (mm) */
38    
39     #define BORWIDTH 5 /* border width */
40    
41     #define ourscreen DefaultScreen(ourdisplay)
42     #define ourroot RootWindow(ourdisplay,ourscreen)
43     #define ourmask (StructureNotifyMask|ExposureMask|KeyPressMask|\
44 gregl 3.2 ButtonPressMask|ButtonReleaseMask)
45 gregl 3.1
46     #define levptr(etype) ((etype *)&currentevent)
47    
48     struct driver odev; /* global device driver structure */
49    
50 gwlarson 3.30 char odev_args[64]; /* command arguments */
51    
52 gregl 3.1 static XEvent currentevent; /* current event */
53    
54     static int ncolors = 0; /* color table size */
55     static int mapped = 0; /* window is mapped? */
56     static unsigned long *pixval = NULL; /* allocated pixels */
57     static unsigned long ourblack=0, ourwhite=1;
58    
59     static Display *ourdisplay = NULL; /* our display */
60     static XVisualInfo ourvinfo; /* our visual information */
61     static Window gwind = 0; /* our graphics window */
62     static GC ourgc = 0; /* our graphics context for drawing */
63     static Colormap ourmap = 0; /* our color map */
64    
65     static double pwidth, pheight; /* pixel dimensions (mm) */
66    
67     static int inpresflags; /* input result flags */
68    
69 gregl 3.2 static int headlocked = 0; /* lock vertical motion */
70 gregl 3.1
71 gwlarson 3.30 static int getpixels(), xnewcolr(), freepixels(), resizewindow(), getframe(),
72 gregl 3.2 getevent(), getkey(), moveview(), getmove(), fixwindow();
73 gregl 3.1 static unsigned long true_pixel();
74    
75    
76     static int
77     mytmflags() /* figure out tone mapping flags */
78     {
79     extern char *progname;
80     register char *cp, *tail;
81     /* find basic name */
82     for (cp = tail = progname; *cp; cp++)
83     if (*cp == '/')
84     tail = cp+1;
85     for (cp = tail; *cp && *cp != '.'; cp++)
86     ;
87     if (cp-tail == 3 && !strncmp(tail, "x11", 3))
88 gregl 3.20 return(TM_F_CAMERA|TM_F_NOSTDERR);
89 gregl 3.1 if (cp-tail == 4 && !strncmp(tail, "x11h", 4))
90 gregl 3.20 return(TM_F_HUMAN|TM_F_NOSTDERR);
91 gregl 3.1 error(USER, "illegal driver name");
92     }
93    
94    
95     dev_open(id) /* initialize X11 driver */
96     char *id;
97     {
98     extern char *getenv();
99 gregl 3.24 static RGBPRIMS myprims = STDPRIMS;
100     char *ev;
101 gregl 3.1 double gamval = GAMMA;
102 gregl 3.24 RGBPRIMP dpri = stdprims;
103 gregl 3.1 int nplanes;
104     XSetWindowAttributes ourwinattr;
105     XWMHints ourxwmhints;
106     XSizeHints oursizhints;
107 gregl 3.2 /* set quadtree globals */
108 gregl 3.4 qtMinNodesiz = 2;
109 gregl 3.1 /* open display server */
110     ourdisplay = XOpenDisplay(NULL);
111     if (ourdisplay == NULL)
112     error(USER, "cannot open X-windows; DISPLAY variable set?\n");
113     /* find a usable visual */
114     nplanes = DisplayPlanes(ourdisplay, ourscreen);
115     if (XMatchVisualInfo(ourdisplay,ourscreen,
116     nplanes>12?nplanes:24,TrueColor,&ourvinfo) ||
117     XMatchVisualInfo(ourdisplay,ourscreen,
118     nplanes>12?nplanes:24,DirectColor,&ourvinfo)) {
119     ourblack = 0;
120     ourwhite = ourvinfo.red_mask |
121     ourvinfo.green_mask |
122     ourvinfo.blue_mask ;
123     } else {
124     if (nplanes < 4)
125     error(INTERNAL, "not enough colors\n");
126     if (!XMatchVisualInfo(ourdisplay,ourscreen,
127     nplanes,PseudoColor,&ourvinfo) &&
128     !XMatchVisualInfo(ourdisplay,ourscreen,
129     nplanes,GrayScale,&ourvinfo))
130     error(INTERNAL, "unsupported visual type\n");
131     ourblack = BlackPixel(ourdisplay,ourscreen);
132     ourwhite = WhitePixel(ourdisplay,ourscreen);
133     }
134     /* set gamma and tone mapping */
135 gregl 3.24 if ((ev = XGetDefault(ourdisplay, "radiance", "gamma")) != NULL
136     || (ev = getenv("DISPLAY_GAMMA")) != NULL)
137     gamval = atof(ev);
138     if ((ev = getenv("DISPLAY_PRIMARIES")) != NULL &&
139     sscanf(ev, "%f %f %f %f %f %f %f %f",
140     &myprims[RED][CIEX],&myprims[RED][CIEY],
141     &myprims[GRN][CIEX],&myprims[GRN][CIEY],
142     &myprims[BLU][CIEX],&myprims[BLU][CIEY],
143     &myprims[WHT][CIEX],&myprims[WHT][CIEY]) >= 6)
144     dpri = myprims;
145     if (tmInit(mytmflags(), dpri, gamval) == NULL)
146 gregl 3.1 error(SYSTEM, "not enough memory in dev_open");
147     /* open window */
148     ourwinattr.background_pixel = ourblack;
149     ourwinattr.border_pixel = ourblack;
150     ourwinattr.event_mask = ourmask;
151     /* this is stupid */
152     ourwinattr.colormap = XCreateColormap(ourdisplay, ourroot,
153     ourvinfo.visual, AllocNone);
154     gwind = XCreateWindow(ourdisplay, ourroot, 0, 0,
155     DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH,
156     DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH,
157     BORWIDTH, ourvinfo.depth, InputOutput, ourvinfo.visual,
158     CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &ourwinattr);
159     if (gwind == 0)
160     error(SYSTEM, "cannot create window\n");
161     XStoreName(ourdisplay, gwind, id);
162     /* get graphics context */
163     ourgc = XCreateGC(ourdisplay, gwind, 0, NULL);
164     /* set window manager hints */
165     ourxwmhints.flags = InputHint|IconPixmapHint;
166     ourxwmhints.input = True;
167     ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay,
168     gwind, x11icon_bits, x11icon_width, x11icon_height);
169     XSetWMHints(ourdisplay, gwind, &ourxwmhints);
170     oursizhints.min_width = MINWIDTH;
171     oursizhints.min_height = MINHEIGHT;
172     oursizhints.flags = PMinSize;
173     XSetNormalHints(ourdisplay, gwind, &oursizhints);
174 gregl 3.18 /* figure out sensible view */
175     pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) /
176     DisplayWidth(ourdisplay, ourscreen);
177     pheight = (double)DisplayHeightMM(ourdisplay, ourscreen) /
178     DisplayHeight(ourdisplay, ourscreen);
179     copystruct(&odev.v, &stdview);
180     odev.v.type = VT_PER;
181 gregl 3.1 /* map the window and get its size */
182     XMapWindow(ourdisplay, gwind);
183 gregl 3.18 dev_input(); /* sets size and view angles */
184 gregl 3.2 /* allocate our leaf pile */
185     if (!qtAllocLeaves(DisplayWidth(ourdisplay,ourscreen) *
186 gregl 3.21 DisplayHeight(ourdisplay,ourscreen) * 3 /
187     (qtMinNodesiz*qtMinNodesiz*2)))
188 gregl 3.2 error(SYSTEM, "insufficient memory for leaf storage");
189 gregl 3.1 odev.name = id;
190     odev.ifd = ConnectionNumber(ourdisplay);
191     }
192    
193    
194     dev_close() /* close our display */
195     {
196     freepixels();
197     XFreeGC(ourdisplay, ourgc);
198     XDestroyWindow(ourdisplay, gwind);
199     gwind = 0;
200     ourgc = 0;
201     XCloseDisplay(ourdisplay);
202     ourdisplay = NULL;
203     qtFreeLeaves();
204     tmDone(NULL);
205     odev.v.type = 0;
206     odev.hres = odev.vres = 0;
207     odev.ifd = -1;
208     }
209    
210    
211 gregl 3.23
212     dev_clear() /* clear our quadtree */
213     {
214     qtCompost(100);
215     if (ncolors > 0)
216     new_ctab(ncolors);
217     rayqleft = 0; /* hold off update */
218     }
219    
220    
221 gregl 3.13 int
222 gregl 3.1 dev_view(nv) /* assign new driver view */
223     VIEW *nv;
224     {
225 gregl 3.13 if (nv->type == VT_PAR || /* check view legality */
226 gregl 3.17 nv->horiz > 160. || nv->vert > 160.) {
227 gregl 3.13 error(COMMAND, "illegal view type/angle");
228     nv->type = VT_PER;
229     nv->horiz = odev.v.horiz;
230     nv->vert = odev.v.vert;
231     return(0);
232     }
233     if (nv->vfore > FTINY) {
234     error(COMMAND, "cannot handle fore clipping");
235     nv->vfore = 0.;
236     return(0);
237     }
238 gregl 3.11 if (nv != &odev.v) {
239     if (!FEQ(nv->horiz,odev.v.horiz) || /* resize window? */
240     !FEQ(nv->vert,odev.v.vert)) {
241 gregl 3.13 int dw = DisplayWidth(ourdisplay,ourscreen);
242     int dh = DisplayHeight(ourdisplay,ourscreen);
243    
244     dw -= 25; /* for window frame */
245 gregl 3.16 dh -= 50;
246 gregl 3.12 odev.hres = 2.*VIEWDIST/pwidth *
247     tan(PI/180./2.*nv->horiz);
248     odev.vres = 2.*VIEWDIST/pheight *
249     tan(PI/180./2.*nv->vert);
250 gregl 3.13 if (odev.hres > dw) {
251     odev.vres = dw * odev.vres / odev.hres;
252     odev.hres = dw;
253     }
254     if (odev.vres > dh) {
255     odev.hres = dh * odev.hres / odev.vres;
256     odev.vres = dh;
257     }
258 gregl 3.11 XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres);
259 gregl 3.18 dev_input(); /* wait for resize event */
260 gregl 3.11 }
261 gregl 3.1 copystruct(&odev.v, nv);
262 gregl 3.11 }
263 gregl 3.1 qtReplant();
264 gregl 3.13 return(1);
265 gwlarson 3.26 }
266    
267    
268 gwlarson 3.31 dev_section(ofn) /* add octree for geometry rendering */
269     char *ofn;
270     {
271     /* unimplemented */
272     }
273    
274    
275 gwlarson 3.26 dev_auxcom(cmd, args) /* process an auxiliary command */
276     char *cmd, *args;
277     {
278     sprintf(errmsg, "%s: unknown command", cmd);
279     error(COMMAND, errmsg);
280 gregl 3.1 }
281    
282    
283 gwlarson 3.25 VIEW *
284     dev_auxview(n, hvres) /* return nth auxiliary view */
285     int n;
286     int hvres[2];
287     {
288     if (n)
289     return(NULL);
290     hvres[0] = odev.hres; hvres[1] = odev.vres;
291     return(&odev.v);
292     }
293    
294    
295 gregl 3.1 int
296     dev_input() /* get X11 input */
297     {
298     inpresflags = 0;
299 gregl 3.5
300 gregl 3.1 do
301     getevent();
302    
303 gwlarson 3.27 while (XPending(ourdisplay) > 0);
304 gregl 3.1
305 gwlarson 3.27 odev.inpready = 0;
306    
307 gregl 3.1 return(inpresflags);
308     }
309    
310    
311     dev_paintr(rgb, xmin, ymin, xmax, ymax) /* fill a rectangle */
312     BYTE rgb[3];
313     int xmin, ymin, xmax, ymax;
314     {
315     unsigned long pixel;
316    
317     if (!mapped)
318     return;
319     if (ncolors > 0)
320     pixel = pixval[get_pixel(rgb, xnewcolr)];
321     else
322     pixel = true_pixel(rgb);
323     XSetForeground(ourdisplay, ourgc, pixel);
324     XFillRectangle(ourdisplay, gwind,
325     ourgc, xmin, odev.vres-ymax, xmax-xmin, ymax-ymin);
326     }
327    
328    
329     int
330     dev_flush() /* flush output */
331     {
332     qtUpdate();
333 gregl 3.20 rayqleft = RAYQLEN;
334 gwlarson 3.27 return(odev.inpready = XPending(ourdisplay));
335 gregl 3.1 }
336    
337    
338     static
339     xnewcolr(ndx, r, g, b) /* enter a color into hardware table */
340     int ndx;
341     int r, g, b;
342     {
343     XColor xcolor;
344    
345     xcolor.pixel = pixval[ndx];
346     xcolor.red = r << 8;
347     xcolor.green = g << 8;
348     xcolor.blue = b << 8;
349     xcolor.flags = DoRed|DoGreen|DoBlue;
350    
351     XStoreColor(ourdisplay, ourmap, &xcolor);
352     }
353    
354    
355     static int
356     getpixels() /* get the color map */
357     {
358     XColor thiscolor;
359     register int i, j;
360    
361     if (ncolors > 0)
362     return(ncolors);
363     if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) {
364     ourmap = DefaultColormap(ourdisplay,ourscreen);
365     goto loop;
366     }
367     newmap:
368     ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone);
369     loop:
370     for (ncolors = ourvinfo.colormap_size;
371     ncolors > ourvinfo.colormap_size/3;
372     ncolors = ncolors*.937) {
373     pixval = (unsigned long *)malloc(ncolors*sizeof(unsigned long));
374     if (pixval == NULL)
375     return(ncolors = 0);
376     if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,pixval,ncolors))
377     break;
378 greg 3.32 free((void *)pixval);
379 gregl 3.1 pixval = NULL;
380     }
381     if (pixval == NULL) {
382     if (ourmap == DefaultColormap(ourdisplay,ourscreen))
383     goto newmap; /* try it with our map */
384     else
385     return(ncolors = 0); /* failed */
386     }
387     if (ourmap != DefaultColormap(ourdisplay,ourscreen))
388     for (i = 0; i < ncolors; i++) { /* reset black and white */
389     if (pixval[i] != ourblack && pixval[i] != ourwhite)
390     continue;
391     thiscolor.pixel = pixval[i];
392     thiscolor.flags = DoRed|DoGreen|DoBlue;
393     XQueryColor(ourdisplay,
394     DefaultColormap(ourdisplay,ourscreen),
395     &thiscolor);
396     XStoreColor(ourdisplay, ourmap, &thiscolor);
397     for (j = i; j+1 < ncolors; j++)
398     pixval[j] = pixval[j+1];
399     ncolors--;
400     i--;
401     }
402     XSetWindowColormap(ourdisplay, gwind, ourmap);
403     return(ncolors);
404     }
405    
406    
407     static
408     freepixels() /* free our pixels */
409     {
410     if (ncolors == 0)
411     return;
412     XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L);
413 greg 3.32 free((void *)pixval);
414 gregl 3.1 pixval = NULL;
415     ncolors = 0;
416     if (ourmap != DefaultColormap(ourdisplay,ourscreen))
417     XFreeColormap(ourdisplay, ourmap);
418     ourmap = 0;
419     }
420    
421    
422     static unsigned long
423     true_pixel(rgb) /* return true pixel value for color */
424     register BYTE rgb[3];
425     {
426     register unsigned long rval;
427    
428     rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask;
429     rval |= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask;
430     rval |= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask;
431     return(rval);
432     }
433    
434    
435     static
436     getevent() /* get next event */
437     {
438     XNextEvent(ourdisplay, levptr(XEvent));
439     switch (levptr(XEvent)->type) {
440     case ConfigureNotify:
441     resizewindow(levptr(XConfigureEvent));
442     break;
443     case UnmapNotify:
444     mapped = 0;
445     freepixels();
446     break;
447     case MapNotify:
448     if (ourvinfo.class == PseudoColor ||
449     ourvinfo.class == GrayScale) {
450     if (getpixels() == 0)
451     error(SYSTEM, "cannot allocate colors\n");
452     new_ctab(ncolors);
453     }
454     mapped = 1;
455     break;
456     case Expose:
457     fixwindow(levptr(XExposeEvent));
458     break;
459     case KeyPress:
460     getkey(levptr(XKeyPressedEvent));
461     break;
462     case ButtonPress:
463 gwlarson 3.30 if (FRAMESTATE(levptr(XButtonPressedEvent)->state))
464     getframe(levptr(XButtonPressedEvent));
465     else
466     getmove(levptr(XButtonPressedEvent));
467 gregl 3.1 break;
468     }
469     }
470    
471    
472     static
473 gregl 3.9 ilclip(dp, wp) /* clip world coordinates to device */
474     int dp[2][2];
475     FVECT wp[2];
476     {
477 gwlarson 3.28 static FVECT vmin = {0.,0.,0.}, vmax = {1.-FTINY,1.-FTINY,FHUGE};
478     FVECT wpc[2], ip[2];
479     double d, d0, d1;
480     /* check for points behind view */
481     d = DOT(odev.v.vp, odev.v.vdir);
482     d0 = DOT(wp[0], odev.v.vdir) - d;
483     d1 = DOT(wp[1], odev.v.vdir) - d;
484     /* work on copy of world points */
485     if (d0 <= d1) {
486     VCOPY(wpc[0], wp[0]); VCOPY(wpc[1], wp[1]);
487     } else {
488     d = d0; d0 = d1; d1 = d;
489     VCOPY(wpc[1], wp[0]); VCOPY(wpc[0], wp[1]);
490     }
491     if (d0 <= FTINY) {
492     if (d1 <= FTINY) return(0);
493     VSUB(wpc[0], wpc[0], wpc[1]);
494     d = .99*d1/(d1-d0);
495     VSUM(wpc[0], wpc[1], wpc[0], d);
496     }
497     /* get view coordinates and clip to window */
498     viewloc(ip[0], &odev.v, wpc[0]);
499     viewloc(ip[1], &odev.v, wpc[1]);
500 gregl 3.9 if (!clip(ip[0], ip[1], vmin, vmax))
501     return(0);
502     dp[0][0] = ip[0][0]*odev.hres;
503     dp[0][1] = ip[0][1]*odev.vres;
504     dp[1][0] = ip[1][0]*odev.hres;
505     dp[1][1] = ip[1][1]*odev.vres;
506     return(1);
507     }
508    
509    
510     static
511     draw3dline(wp) /* draw 3d line in world coordinates */
512     FVECT wp[2];
513     {
514     int dp[2][2];
515    
516     if (!ilclip(dp, wp))
517     return;
518     XDrawLine(ourdisplay, gwind, ourgc,
519     dp[0][0], odev.vres-1 - dp[0][1],
520     dp[1][0], odev.vres-1 - dp[1][1]);
521     }
522    
523    
524     static
525     draw_grids() /* draw holodeck section grids */
526     {
527     static BYTE gridrgb[3] = {0x0, 0xff, 0xff};
528     unsigned long pixel;
529    
530     if (ncolors > 0)
531     pixel = pixval[get_pixel(gridrgb, xnewcolr)];
532     else
533     pixel = true_pixel(gridrgb);
534     XSetForeground(ourdisplay, ourgc, pixel);
535     /* draw each grid line */
536     gridlines(draw3dline);
537     }
538    
539    
540     static
541 gregl 3.13 moveview(dx, dy, mov, orb) /* move our view */
542     int dx, dy, mov, orb;
543 gregl 3.2 {
544     VIEW nv;
545 gregl 3.17 FVECT odir, v1;
546 gregl 3.2 double d;
547 gregl 3.13 register int li;
548 gregl 3.2 /* start with old view */
549     copystruct(&nv, &odev.v);
550     /* change view direction */
551 gregl 3.13 if (mov | orb) {
552 gregl 3.4 if ((li = qtFindLeaf(dx, dy)) < 0)
553 gregl 3.2 return(0); /* not on window */
554 gregl 3.17 VSUM(odir, qtL.wp[li], nv.vp, -1.);
555 gregl 3.2 } else {
556     if (viewray(nv.vp, nv.vdir, &odev.v,
557     (dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY)
558     return(0); /* outside view */
559     }
560 gregl 3.13 if (orb && mov) { /* orbit left/right */
561 gregl 3.17 spinvector(odir, odir, nv.vup, d=MOVDEG*PI/180.*mov);
562     VSUM(nv.vp, qtL.wp[li], odir, -1.);
563     spinvector(nv.vdir, nv.vdir, nv.vup, d);
564 gregl 3.13 } else if (orb) { /* orbit up/down */
565 gregl 3.17 fcross(v1, odir, nv.vup);
566 gregl 3.13 if (normalize(v1) == 0.)
567     return(0);
568 gregl 3.17 spinvector(odir, odir, v1, d=MOVDEG*PI/180.*orb);
569     VSUM(nv.vp, qtL.wp[li], odir, -1.);
570     spinvector(nv.vdir, nv.vdir, v1, d);
571 gregl 3.13 } else if (mov) { /* move forward/backward */
572     d = MOVPCT/100. * mov;
573 gregl 3.17 VSUM(nv.vp, nv.vp, odir, d);
574 gregl 3.2 }
575 gregl 3.13 if (!mov ^ !orb && headlocked) { /* restore head height */
576     VSUM(v1, odev.v.vp, nv.vp, -1.);
577     d = DOT(v1, odev.v.vup);
578     VSUM(nv.vp, nv.vp, odev.v.vup, d);
579     }
580 gregl 3.2 if (setview(&nv) != NULL)
581     return(0); /* illegal view */
582     dev_view(&nv);
583 gregl 3.14 inpresflags |= DFL(DC_SETVIEW);
584 gregl 3.2 return(1);
585     }
586    
587    
588     static
589 gwlarson 3.30 getframe(ebut) /* get focus frame */
590     XButtonPressedEvent *ebut;
591     {
592     int startx = ebut->x, starty = ebut->y;
593     int endx, endy;
594    
595     XMaskEvent(ourdisplay, ButtonReleaseMask, levptr(XEvent));
596     endx = levptr(XButtonReleasedEvent)->x;
597     endy = levptr(XButtonReleasedEvent)->y;
598     if (endx == startx | endy == starty) {
599     XBell(ourdisplay, 0);
600     return;
601     }
602     if (endx < startx) {register int c = endx; endx = startx; startx = c;}
603     if (endy < starty) {register int c = endy; endy = starty; starty = c;}
604     sprintf(odev_args, "%.3f %.3f %.3f %.3f",
605     (startx+.5)/odev.hres, 1.-(endy+.5)/odev.vres,
606     (endx+.5)/odev.hres, 1.-(starty+.5)/odev.vres);
607     inpresflags |= DFL(DC_FOCUS);
608     }
609    
610    
611     static
612 greg 3.32 waitabit() /* pause a moment */
613     {
614     struct timespec ts;
615     ts.tv_sec = 0;
616 greg 3.33 ts.tv_nsec = 50000000;
617 greg 3.32 nanosleep(&ts, NULL);
618     }
619    
620    
621     static
622 gregl 3.2 getmove(ebut) /* get view change */
623     XButtonPressedEvent *ebut;
624     {
625 gregl 3.13 int movdir = MOVDIR(ebut->button);
626     int movorb = MOVORB(ebut->state);
627 gregl 3.2 int oldnodesiz = qtMinNodesiz;
628     Window rootw, childw;
629     int rootx, rooty, wx, wy;
630     unsigned int statemask;
631    
632     qtMinNodesiz = 16; /* for quicker update */
633 gregl 3.9 XNoOp(ourdisplay);
634 gregl 3.2
635 gregl 3.9 while (!XCheckMaskEvent(ourdisplay,
636     ButtonReleaseMask, levptr(XEvent))) {
637 greg 3.32 waitabit();
638 gregl 3.2 if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw,
639     &rootx, &rooty, &wx, &wy, &statemask))
640     break; /* on another screen */
641    
642 gregl 3.13 if (!moveview(wx, odev.vres-1-wy, movdir, movorb)) {
643 gregl 3.2 sleep(1);
644 gregl 3.9 continue;
645     }
646     XClearWindow(ourdisplay, gwind);
647     qtUpdate();
648     draw_grids();
649     }
650 gregl 3.14 if (!(inpresflags & DFL(DC_SETVIEW))) { /* do final motion */
651 gregl 3.13 movdir = MOVDIR(levptr(XButtonReleasedEvent)->button);
652 gregl 3.2 wx = levptr(XButtonReleasedEvent)->x;
653     wy = levptr(XButtonReleasedEvent)->y;
654 gregl 3.13 moveview(wx, odev.vres-1-wy, movdir, movorb);
655 gregl 3.2 }
656 gregl 3.9 dev_flush();
657 gregl 3.2
658     qtMinNodesiz = oldnodesiz; /* restore quadtree resolution */
659     }
660    
661    
662     static
663 gregl 3.1 getkey(ekey) /* get input key */
664     register XKeyPressedEvent *ekey;
665     {
666 gwlarson 3.30 Window rootw, childw;
667     int rootx, rooty, wx, wy;
668     unsigned int statemask;
669 gregl 3.1 int n;
670     char buf[8];
671    
672     n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL);
673     if (n != 1)
674     return;
675     switch (buf[0]) {
676     case 'h': /* turn on height motion lock */
677 gregl 3.2 headlocked = 1;
678 gregl 3.1 return;
679     case 'H': /* turn off height motion lock */
680 gregl 3.2 headlocked = 0;
681 gregl 3.13 return;
682     case 'l': /* retrieve last view */
683 gregl 3.14 inpresflags |= DFL(DC_LASTVIEW);
684 gwlarson 3.30 return;
685     case 'f': /* frame view position */
686     if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw,
687     &rootx, &rooty, &wx, &wy, &statemask))
688     return; /* on another screen */
689     sprintf(odev_args, "%.4f %.4f", (wx+.5)/odev.hres,
690     1.-(wy+.5)/odev.vres);
691     inpresflags |= DFL(DC_FOCUS);
692     return;
693     case 'F': /* unfocus */
694     odev_args[0] = '\0';
695     inpresflags |= DFL(DC_FOCUS);
696 gregl 3.1 return;
697 gregl 3.2 case 'p': /* pause computation */
698 gregl 3.14 inpresflags |= DFL(DC_PAUSE);
699 gregl 3.2 return;
700 gregl 3.7 case 'v': /* spit out view */
701 gregl 3.14 inpresflags |= DFL(DC_GETVIEW);
702 gregl 3.7 return;
703 gregl 3.2 case '\n':
704 gregl 3.5 case '\r': /* resume computation */
705 gregl 3.14 inpresflags |= DFL(DC_RESUME);
706 gregl 3.2 return;
707 gregl 3.7 case CTRL('R'): /* redraw screen */
708     if (ncolors > 0)
709     new_ctab(ncolors);
710     qtRedraw(0, 0, odev.hres, odev.vres);
711     return;
712     case CTRL('L'): /* refresh from server */
713 gregl 3.14 if (inpresflags & DFL(DC_REDRAW))
714 gregl 3.8 return;
715 gregl 3.7 XClearWindow(ourdisplay, gwind);
716 gregl 3.9 draw_grids();
717 gregl 3.8 XFlush(ourdisplay);
718 gregl 3.6 qtCompost(100); /* unload the old tree */
719 gregl 3.3 if (ncolors > 0)
720     new_ctab(ncolors);
721 gregl 3.14 inpresflags |= DFL(DC_REDRAW); /* resend values from server */
722 gregl 3.22 rayqleft = 0; /* hold off update */
723 gregl 3.3 return;
724 gregl 3.15 case 'K': /* kill rtrace process(es) */
725     inpresflags |= DFL(DC_KILL);
726     break;
727     case 'R': /* restart rtrace */
728     inpresflags |= DFL(DC_RESTART);
729     break;
730     case 'C': /* clobber holodeck */
731     inpresflags |= DFL(DC_CLOBBER);
732     break;
733 gregl 3.1 case 'q': /* quit the program */
734 gregl 3.14 inpresflags |= DFL(DC_QUIT);
735 gregl 3.1 return;
736     default:
737     XBell(ourdisplay, 0);
738     return;
739     }
740     }
741    
742    
743     static
744     fixwindow(eexp) /* repair damage to window */
745     register XExposeEvent *eexp;
746     {
747     if (odev.hres == 0 || odev.vres == 0) { /* first exposure */
748     odev.hres = eexp->width;
749     odev.vres = eexp->height;
750     }
751     qtRedraw(eexp->x, odev.vres - eexp->y - eexp->height,
752     eexp->x + eexp->width, odev.vres - eexp->y);
753     }
754    
755    
756     static
757     resizewindow(ersz) /* resize window */
758     register XConfigureEvent *ersz;
759     {
760     if (ersz->width == odev.hres && ersz->height == odev.vres)
761     return;
762    
763     odev.hres = ersz->width;
764     odev.vres = ersz->height;
765    
766 gregl 3.12 odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres);
767     odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres);
768    
769 gregl 3.14 inpresflags |= DFL(DC_SETVIEW);
770 gregl 3.1 }