1 |
/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
2 |
|
3 |
#ifndef lint |
4 |
static char SCCSid[] = "$SunId$ SGI"; |
5 |
#endif |
6 |
|
7 |
/* |
8 |
* X11 driver for holodeck display. |
9 |
* Based on rview driver. |
10 |
*/ |
11 |
|
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#include "standard.h" |
13 |
#include "rhd_qtree.h" |
14 |
|
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#include <X11/Xlib.h> |
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#include <X11/cursorfont.h> |
17 |
#include <X11/Xutil.h> |
18 |
|
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#include "x11icon.h" |
20 |
|
21 |
#ifndef FEQ |
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#define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY) |
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#endif |
24 |
|
25 |
#define GAMMA 2.2 /* default gamma correction */ |
26 |
|
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#define MOVPCT 7 /* percent distance to move /frame */ |
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#define MOVDIR(b) ((b)==Button1 ? 1 : (b)==Button2 ? 0 : -1) |
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#define MOVDEG (-5) /* degrees to orbit CW/down /frame */ |
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#define MOVORB(s) ((s)&ShiftMask ? 1 : (s)&ControlMask ? -1 : 0) |
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|
32 |
#define MINWIDTH 480 /* minimum graphics window width */ |
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#define MINHEIGHT 400 /* minimum graphics window height */ |
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|
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#define VIEWDIST 356 /* assumed viewing distance (mm) */ |
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|
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#define BORWIDTH 5 /* border width */ |
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|
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#define ourscreen DefaultScreen(ourdisplay) |
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#define ourroot RootWindow(ourdisplay,ourscreen) |
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#define ourmask (StructureNotifyMask|ExposureMask|KeyPressMask|\ |
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ButtonPressMask|ButtonReleaseMask) |
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|
44 |
#define levptr(etype) ((etype *)¤tevent) |
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|
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struct driver odev; /* global device driver structure */ |
47 |
|
48 |
static XEvent currentevent; /* current event */ |
49 |
|
50 |
static int ncolors = 0; /* color table size */ |
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static int mapped = 0; /* window is mapped? */ |
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static unsigned long *pixval = NULL; /* allocated pixels */ |
53 |
static unsigned long ourblack=0, ourwhite=1; |
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|
55 |
static Display *ourdisplay = NULL; /* our display */ |
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static XVisualInfo ourvinfo; /* our visual information */ |
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static Window gwind = 0; /* our graphics window */ |
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static GC ourgc = 0; /* our graphics context for drawing */ |
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static Colormap ourmap = 0; /* our color map */ |
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|
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static double pwidth, pheight; /* pixel dimensions (mm) */ |
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|
63 |
static int inpresflags; /* input result flags */ |
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|
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static int headlocked = 0; /* lock vertical motion */ |
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|
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static int getpixels(), xnewcolr(), freepixels(), resizewindow(), |
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getevent(), getkey(), moveview(), getmove(), fixwindow(); |
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static unsigned long true_pixel(); |
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|
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|
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static int |
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mytmflags() /* figure out tone mapping flags */ |
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{ |
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extern char *progname; |
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register char *cp, *tail; |
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/* find basic name */ |
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for (cp = tail = progname; *cp; cp++) |
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if (*cp == '/') |
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tail = cp+1; |
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for (cp = tail; *cp && *cp != '.'; cp++) |
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; |
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if (cp-tail == 3 && !strncmp(tail, "x11", 3)) |
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return(TM_F_CAMERA); |
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if (cp-tail == 4 && !strncmp(tail, "x11h", 4)) |
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return(TM_F_HUMAN); |
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error(USER, "illegal driver name"); |
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} |
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|
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|
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dev_open(id) /* initialize X11 driver */ |
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char *id; |
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{ |
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extern char *getenv(); |
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char *gv; |
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double gamval = GAMMA; |
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int nplanes; |
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XSetWindowAttributes ourwinattr; |
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XWMHints ourxwmhints; |
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XSizeHints oursizhints; |
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/* set quadtree globals */ |
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qtMinNodesiz = 2; |
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/* open display server */ |
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ourdisplay = XOpenDisplay(NULL); |
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if (ourdisplay == NULL) |
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error(USER, "cannot open X-windows; DISPLAY variable set?\n"); |
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/* find a usable visual */ |
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nplanes = DisplayPlanes(ourdisplay, ourscreen); |
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if (XMatchVisualInfo(ourdisplay,ourscreen, |
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nplanes>12?nplanes:24,TrueColor,&ourvinfo) || |
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XMatchVisualInfo(ourdisplay,ourscreen, |
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nplanes>12?nplanes:24,DirectColor,&ourvinfo)) { |
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ourblack = 0; |
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ourwhite = ourvinfo.red_mask | |
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ourvinfo.green_mask | |
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ourvinfo.blue_mask ; |
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} else { |
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if (nplanes < 4) |
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error(INTERNAL, "not enough colors\n"); |
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if (!XMatchVisualInfo(ourdisplay,ourscreen, |
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nplanes,PseudoColor,&ourvinfo) && |
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!XMatchVisualInfo(ourdisplay,ourscreen, |
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nplanes,GrayScale,&ourvinfo)) |
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error(INTERNAL, "unsupported visual type\n"); |
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ourblack = BlackPixel(ourdisplay,ourscreen); |
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ourwhite = WhitePixel(ourdisplay,ourscreen); |
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} |
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/* set gamma and tone mapping */ |
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if ((gv = XGetDefault(ourdisplay, "radiance", "gamma")) != NULL |
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|| (gv = getenv("DISPLAY_GAMMA")) != NULL) |
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gamval = atof(gv); |
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if (tmInit(mytmflags(), stdprims, gamval) == NULL) |
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error(SYSTEM, "not enough memory in dev_open"); |
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/* open window */ |
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ourwinattr.background_pixel = ourblack; |
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ourwinattr.border_pixel = ourblack; |
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ourwinattr.event_mask = ourmask; |
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/* this is stupid */ |
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ourwinattr.colormap = XCreateColormap(ourdisplay, ourroot, |
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ourvinfo.visual, AllocNone); |
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gwind = XCreateWindow(ourdisplay, ourroot, 0, 0, |
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DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH, |
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DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH, |
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BORWIDTH, ourvinfo.depth, InputOutput, ourvinfo.visual, |
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CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &ourwinattr); |
146 |
if (gwind == 0) |
147 |
error(SYSTEM, "cannot create window\n"); |
148 |
XStoreName(ourdisplay, gwind, id); |
149 |
/* get graphics context */ |
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ourgc = XCreateGC(ourdisplay, gwind, 0, NULL); |
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/* set window manager hints */ |
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ourxwmhints.flags = InputHint|IconPixmapHint; |
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ourxwmhints.input = True; |
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ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay, |
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gwind, x11icon_bits, x11icon_width, x11icon_height); |
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XSetWMHints(ourdisplay, gwind, &ourxwmhints); |
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oursizhints.min_width = MINWIDTH; |
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oursizhints.min_height = MINHEIGHT; |
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oursizhints.flags = PMinSize; |
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XSetNormalHints(ourdisplay, gwind, &oursizhints); |
161 |
/* map the window and get its size */ |
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XMapWindow(ourdisplay, gwind); |
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dev_input(); |
164 |
/* allocate our leaf pile */ |
165 |
if (!qtAllocLeaves(DisplayWidth(ourdisplay,ourscreen) * |
166 |
DisplayHeight(ourdisplay,ourscreen) / |
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(qtMinNodesiz*qtMinNodesiz))) |
168 |
error(SYSTEM, "insufficient memory for leaf storage"); |
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|
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/* figure out sensible view */ |
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pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) / |
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DisplayWidth(ourdisplay, ourscreen); |
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pheight = (double)DisplayHeightMM(ourdisplay, ourscreen) / |
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DisplayHeight(ourdisplay, ourscreen); |
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copystruct(&odev.v, &stdview); |
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odev.name = id; |
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odev.v.type = VT_PER; |
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odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres); |
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odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres); |
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odev.ifd = ConnectionNumber(ourdisplay); |
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} |
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|
183 |
|
184 |
dev_close() /* close our display */ |
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{ |
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freepixels(); |
187 |
XFreeGC(ourdisplay, ourgc); |
188 |
XDestroyWindow(ourdisplay, gwind); |
189 |
gwind = 0; |
190 |
ourgc = 0; |
191 |
XCloseDisplay(ourdisplay); |
192 |
ourdisplay = NULL; |
193 |
qtFreeLeaves(); |
194 |
tmDone(NULL); |
195 |
odev.v.type = 0; |
196 |
odev.hres = odev.vres = 0; |
197 |
odev.ifd = -1; |
198 |
} |
199 |
|
200 |
|
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int |
202 |
dev_view(nv) /* assign new driver view */ |
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VIEW *nv; |
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{ |
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 |
|
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dw -= 25; /* for window frame */ |
225 |
dh -= 100; |
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odev.hres = 2.*VIEWDIST/pwidth * |
227 |
tan(PI/180./2.*nv->horiz); |
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odev.vres = 2.*VIEWDIST/pheight * |
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tan(PI/180./2.*nv->vert); |
230 |
if (odev.hres > dw) { |
231 |
odev.vres = dw * odev.vres / odev.hres; |
232 |
odev.hres = dw; |
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} |
234 |
if (odev.vres > dh) { |
235 |
odev.hres = dh * odev.hres / odev.vres; |
236 |
odev.vres = dh; |
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} |
238 |
XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres); |
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} |
240 |
copystruct(&odev.v, nv); |
241 |
} |
242 |
qtReplant(); |
243 |
return(1); |
244 |
} |
245 |
|
246 |
|
247 |
int |
248 |
dev_input() /* get X11 input */ |
249 |
{ |
250 |
inpresflags = 0; |
251 |
|
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do |
253 |
getevent(); |
254 |
|
255 |
while (XQLength(ourdisplay) > 0); |
256 |
|
257 |
return(inpresflags); |
258 |
} |
259 |
|
260 |
|
261 |
dev_paintr(rgb, xmin, ymin, xmax, ymax) /* fill a rectangle */ |
262 |
BYTE rgb[3]; |
263 |
int xmin, ymin, xmax, ymax; |
264 |
{ |
265 |
unsigned long pixel; |
266 |
|
267 |
if (!mapped) |
268 |
return; |
269 |
if (ncolors > 0) |
270 |
pixel = pixval[get_pixel(rgb, xnewcolr)]; |
271 |
else |
272 |
pixel = true_pixel(rgb); |
273 |
XSetForeground(ourdisplay, ourgc, pixel); |
274 |
XFillRectangle(ourdisplay, gwind, |
275 |
ourgc, xmin, odev.vres-ymax, xmax-xmin, ymax-ymin); |
276 |
} |
277 |
|
278 |
|
279 |
int |
280 |
dev_flush() /* flush output */ |
281 |
{ |
282 |
qtUpdate(); |
283 |
return(XPending(ourdisplay)); |
284 |
} |
285 |
|
286 |
|
287 |
static |
288 |
xnewcolr(ndx, r, g, b) /* enter a color into hardware table */ |
289 |
int ndx; |
290 |
int r, g, b; |
291 |
{ |
292 |
XColor xcolor; |
293 |
|
294 |
xcolor.pixel = pixval[ndx]; |
295 |
xcolor.red = r << 8; |
296 |
xcolor.green = g << 8; |
297 |
xcolor.blue = b << 8; |
298 |
xcolor.flags = DoRed|DoGreen|DoBlue; |
299 |
|
300 |
XStoreColor(ourdisplay, ourmap, &xcolor); |
301 |
} |
302 |
|
303 |
|
304 |
static int |
305 |
getpixels() /* get the color map */ |
306 |
{ |
307 |
XColor thiscolor; |
308 |
register int i, j; |
309 |
|
310 |
if (ncolors > 0) |
311 |
return(ncolors); |
312 |
if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) { |
313 |
ourmap = DefaultColormap(ourdisplay,ourscreen); |
314 |
goto loop; |
315 |
} |
316 |
newmap: |
317 |
ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone); |
318 |
loop: |
319 |
for (ncolors = ourvinfo.colormap_size; |
320 |
ncolors > ourvinfo.colormap_size/3; |
321 |
ncolors = ncolors*.937) { |
322 |
pixval = (unsigned long *)malloc(ncolors*sizeof(unsigned long)); |
323 |
if (pixval == NULL) |
324 |
return(ncolors = 0); |
325 |
if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,pixval,ncolors)) |
326 |
break; |
327 |
free((char *)pixval); |
328 |
pixval = NULL; |
329 |
} |
330 |
if (pixval == NULL) { |
331 |
if (ourmap == DefaultColormap(ourdisplay,ourscreen)) |
332 |
goto newmap; /* try it with our map */ |
333 |
else |
334 |
return(ncolors = 0); /* failed */ |
335 |
} |
336 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
337 |
for (i = 0; i < ncolors; i++) { /* reset black and white */ |
338 |
if (pixval[i] != ourblack && pixval[i] != ourwhite) |
339 |
continue; |
340 |
thiscolor.pixel = pixval[i]; |
341 |
thiscolor.flags = DoRed|DoGreen|DoBlue; |
342 |
XQueryColor(ourdisplay, |
343 |
DefaultColormap(ourdisplay,ourscreen), |
344 |
&thiscolor); |
345 |
XStoreColor(ourdisplay, ourmap, &thiscolor); |
346 |
for (j = i; j+1 < ncolors; j++) |
347 |
pixval[j] = pixval[j+1]; |
348 |
ncolors--; |
349 |
i--; |
350 |
} |
351 |
XSetWindowColormap(ourdisplay, gwind, ourmap); |
352 |
return(ncolors); |
353 |
} |
354 |
|
355 |
|
356 |
static |
357 |
freepixels() /* free our pixels */ |
358 |
{ |
359 |
if (ncolors == 0) |
360 |
return; |
361 |
XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L); |
362 |
free((char *)pixval); |
363 |
pixval = NULL; |
364 |
ncolors = 0; |
365 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
366 |
XFreeColormap(ourdisplay, ourmap); |
367 |
ourmap = 0; |
368 |
} |
369 |
|
370 |
|
371 |
static unsigned long |
372 |
true_pixel(rgb) /* return true pixel value for color */ |
373 |
register BYTE rgb[3]; |
374 |
{ |
375 |
register unsigned long rval; |
376 |
|
377 |
rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask; |
378 |
rval |= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask; |
379 |
rval |= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask; |
380 |
return(rval); |
381 |
} |
382 |
|
383 |
|
384 |
static |
385 |
getevent() /* get next event */ |
386 |
{ |
387 |
XNextEvent(ourdisplay, levptr(XEvent)); |
388 |
switch (levptr(XEvent)->type) { |
389 |
case ConfigureNotify: |
390 |
resizewindow(levptr(XConfigureEvent)); |
391 |
break; |
392 |
case UnmapNotify: |
393 |
mapped = 0; |
394 |
freepixels(); |
395 |
break; |
396 |
case MapNotify: |
397 |
if (ourvinfo.class == PseudoColor || |
398 |
ourvinfo.class == GrayScale) { |
399 |
if (getpixels() == 0) |
400 |
error(SYSTEM, "cannot allocate colors\n"); |
401 |
new_ctab(ncolors); |
402 |
} |
403 |
mapped = 1; |
404 |
break; |
405 |
case Expose: |
406 |
fixwindow(levptr(XExposeEvent)); |
407 |
break; |
408 |
case KeyPress: |
409 |
getkey(levptr(XKeyPressedEvent)); |
410 |
break; |
411 |
case ButtonPress: |
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 |
{ |
561 |
int n; |
562 |
char buf[8]; |
563 |
|
564 |
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
565 |
if (n != 1) |
566 |
return; |
567 |
switch (buf[0]) { |
568 |
case 'h': /* turn on height motion lock */ |
569 |
headlocked = 1; |
570 |
return; |
571 |
case 'H': /* turn off height motion lock */ |
572 |
headlocked = 0; |
573 |
return; |
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 |= DFL(DC_QUIT); |
614 |
return; |
615 |
default: |
616 |
XBell(ourdisplay, 0); |
617 |
return; |
618 |
} |
619 |
} |
620 |
|
621 |
|
622 |
static |
623 |
fixwindow(eexp) /* repair damage to window */ |
624 |
register XExposeEvent *eexp; |
625 |
{ |
626 |
if (odev.hres == 0 || odev.vres == 0) { /* first exposure */ |
627 |
odev.hres = eexp->width; |
628 |
odev.vres = eexp->height; |
629 |
} |
630 |
qtRedraw(eexp->x, odev.vres - eexp->y - eexp->height, |
631 |
eexp->x + eexp->width, odev.vres - eexp->y); |
632 |
} |
633 |
|
634 |
|
635 |
static |
636 |
resizewindow(ersz) /* resize window */ |
637 |
register XConfigureEvent *ersz; |
638 |
{ |
639 |
if (ersz->width == odev.hres && ersz->height == odev.vres) |
640 |
return; |
641 |
|
642 |
odev.hres = ersz->width; |
643 |
odev.vres = ersz->height; |
644 |
|
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 |
} |