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/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
| 2 |
|
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#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" |
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#include "rhd_qtree.h" |
| 14 |
|
| 15 |
#include <X11/Xlib.h> |
| 16 |
#include <X11/cursorfont.h> |
| 17 |
#include <X11/Xutil.h> |
| 18 |
|
| 19 |
#include "x11icon.h" |
| 20 |
|
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#define CTRL(c) ((c)-'@') |
| 22 |
|
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#define GAMMA 2.2 /* default gamma correction */ |
| 24 |
|
| 25 |
#define MOVPCT 10 /* percent distance to move */ |
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#define MOVDIR(b) ((b)==Button1 ? 1 : (b)==Button2 ? 0 : -1) |
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|
| 28 |
#define MINWIDTH 480 /* minimum graphics window width */ |
| 29 |
#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) |
| 37 |
#define ourmask (StructureNotifyMask|ExposureMask|KeyPressMask|\ |
| 38 |
ButtonPressMask|ButtonReleaseMask) |
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|
| 40 |
#define levptr(etype) ((etype *)¤tevent) |
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|
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struct driver odev; /* global device driver structure */ |
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|
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static XEvent currentevent; /* current event */ |
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|
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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 */ |
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static unsigned long ourblack=0, ourwhite=1; |
| 50 |
|
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static Display *ourdisplay = NULL; /* our display */ |
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|
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static XVisualInfo ourvinfo; /* our visual information */ |
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|
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static Window gwind = 0; /* our graphics window */ |
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|
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static GC ourgc = 0; /* our graphics context for drawing */ |
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|
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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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|
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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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qtDepthEps = 0.02; |
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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); |
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if (gwind == 0) |
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error(SYSTEM, "cannot create window\n"); |
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XStoreName(ourdisplay, gwind, id); |
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/* 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); |
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/* map the window and get its size */ |
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XMapWindow(ourdisplay, gwind); |
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dev_input(); |
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/* allocate our leaf pile */ |
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if (!qtAllocLeaves(DisplayWidth(ourdisplay,ourscreen) * |
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DisplayHeight(ourdisplay,ourscreen) / |
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(qtMinNodesiz*qtMinNodesiz))) |
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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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|
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|
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dev_close() /* close our display */ |
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{ |
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freepixels(); |
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XFreeGC(ourdisplay, ourgc); |
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XDestroyWindow(ourdisplay, gwind); |
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gwind = 0; |
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ourgc = 0; |
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XCloseDisplay(ourdisplay); |
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ourdisplay = NULL; |
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qtFreeLeaves(); |
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tmDone(NULL); |
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odev.v.type = 0; |
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odev.hres = odev.vres = 0; |
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odev.ifd = -1; |
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} |
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|
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|
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dev_view(nv) /* assign new driver view */ |
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VIEW *nv; |
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{ |
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if (nv != &odev.v) |
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copystruct(&odev.v, nv); |
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qtReplant(); |
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} |
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|
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|
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int |
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dev_input() /* get X11 input */ |
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{ |
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inpresflags = 0; |
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do |
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getevent(); |
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|
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while (XQLength(ourdisplay) > 0); |
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|
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return(inpresflags); |
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} |
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|
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|
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dev_paintr(rgb, xmin, ymin, xmax, ymax) /* fill a rectangle */ |
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BYTE rgb[3]; |
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int xmin, ymin, xmax, ymax; |
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{ |
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unsigned long pixel; |
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|
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if (!mapped) |
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return; |
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if (ncolors > 0) |
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pixel = pixval[get_pixel(rgb, xnewcolr)]; |
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else |
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pixel = true_pixel(rgb); |
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XSetForeground(ourdisplay, ourgc, pixel); |
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XFillRectangle(ourdisplay, gwind, |
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ourgc, xmin, odev.vres-ymax, xmax-xmin, ymax-ymin); |
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} |
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|
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|
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int |
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dev_flush() /* flush output */ |
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{ |
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qtUpdate(); |
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return(XPending(ourdisplay)); |
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} |
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|
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|
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static |
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xnewcolr(ndx, r, g, b) /* enter a color into hardware table */ |
| 252 |
int ndx; |
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int r, g, b; |
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{ |
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XColor xcolor; |
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|
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xcolor.pixel = pixval[ndx]; |
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xcolor.red = r << 8; |
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xcolor.green = g << 8; |
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xcolor.blue = b << 8; |
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xcolor.flags = DoRed|DoGreen|DoBlue; |
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|
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XStoreColor(ourdisplay, ourmap, &xcolor); |
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} |
| 265 |
|
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|
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static int |
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getpixels() /* get the color map */ |
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{ |
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XColor thiscolor; |
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register int i, j; |
| 272 |
|
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if (ncolors > 0) |
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return(ncolors); |
| 275 |
if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) { |
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ourmap = DefaultColormap(ourdisplay,ourscreen); |
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goto loop; |
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} |
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newmap: |
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ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone); |
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loop: |
| 282 |
for (ncolors = ourvinfo.colormap_size; |
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ncolors > ourvinfo.colormap_size/3; |
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ncolors = ncolors*.937) { |
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pixval = (unsigned long *)malloc(ncolors*sizeof(unsigned long)); |
| 286 |
if (pixval == NULL) |
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return(ncolors = 0); |
| 288 |
if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,pixval,ncolors)) |
| 289 |
break; |
| 290 |
free((char *)pixval); |
| 291 |
pixval = NULL; |
| 292 |
} |
| 293 |
if (pixval == NULL) { |
| 294 |
if (ourmap == DefaultColormap(ourdisplay,ourscreen)) |
| 295 |
goto newmap; /* try it with our map */ |
| 296 |
else |
| 297 |
return(ncolors = 0); /* failed */ |
| 298 |
} |
| 299 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
| 300 |
for (i = 0; i < ncolors; i++) { /* reset black and white */ |
| 301 |
if (pixval[i] != ourblack && pixval[i] != ourwhite) |
| 302 |
continue; |
| 303 |
thiscolor.pixel = pixval[i]; |
| 304 |
thiscolor.flags = DoRed|DoGreen|DoBlue; |
| 305 |
XQueryColor(ourdisplay, |
| 306 |
DefaultColormap(ourdisplay,ourscreen), |
| 307 |
&thiscolor); |
| 308 |
XStoreColor(ourdisplay, ourmap, &thiscolor); |
| 309 |
for (j = i; j+1 < ncolors; j++) |
| 310 |
pixval[j] = pixval[j+1]; |
| 311 |
ncolors--; |
| 312 |
i--; |
| 313 |
} |
| 314 |
XSetWindowColormap(ourdisplay, gwind, ourmap); |
| 315 |
return(ncolors); |
| 316 |
} |
| 317 |
|
| 318 |
|
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static |
| 320 |
freepixels() /* free our pixels */ |
| 321 |
{ |
| 322 |
if (ncolors == 0) |
| 323 |
return; |
| 324 |
XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L); |
| 325 |
free((char *)pixval); |
| 326 |
pixval = NULL; |
| 327 |
ncolors = 0; |
| 328 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
| 329 |
XFreeColormap(ourdisplay, ourmap); |
| 330 |
ourmap = 0; |
| 331 |
} |
| 332 |
|
| 333 |
|
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static unsigned long |
| 335 |
true_pixel(rgb) /* return true pixel value for color */ |
| 336 |
register BYTE rgb[3]; |
| 337 |
{ |
| 338 |
register unsigned long rval; |
| 339 |
|
| 340 |
rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask; |
| 341 |
rval |= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask; |
| 342 |
rval |= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask; |
| 343 |
return(rval); |
| 344 |
} |
| 345 |
|
| 346 |
|
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static |
| 348 |
getevent() /* get next event */ |
| 349 |
{ |
| 350 |
XNextEvent(ourdisplay, levptr(XEvent)); |
| 351 |
switch (levptr(XEvent)->type) { |
| 352 |
case ConfigureNotify: |
| 353 |
resizewindow(levptr(XConfigureEvent)); |
| 354 |
break; |
| 355 |
case UnmapNotify: |
| 356 |
mapped = 0; |
| 357 |
freepixels(); |
| 358 |
break; |
| 359 |
case MapNotify: |
| 360 |
if (ourvinfo.class == PseudoColor || |
| 361 |
ourvinfo.class == GrayScale) { |
| 362 |
if (getpixels() == 0) |
| 363 |
error(SYSTEM, "cannot allocate colors\n"); |
| 364 |
new_ctab(ncolors); |
| 365 |
} |
| 366 |
mapped = 1; |
| 367 |
break; |
| 368 |
case Expose: |
| 369 |
fixwindow(levptr(XExposeEvent)); |
| 370 |
break; |
| 371 |
case KeyPress: |
| 372 |
getkey(levptr(XKeyPressedEvent)); |
| 373 |
break; |
| 374 |
case ButtonPress: |
| 375 |
getmove(levptr(XButtonPressedEvent)); |
| 376 |
break; |
| 377 |
} |
| 378 |
} |
| 379 |
|
| 380 |
|
| 381 |
static |
| 382 |
moveview(dx, dy, move) /* move our view */ |
| 383 |
int dx, dy, move; |
| 384 |
{ |
| 385 |
VIEW nv; |
| 386 |
double d; |
| 387 |
register int i, li; |
| 388 |
/* start with old view */ |
| 389 |
copystruct(&nv, &odev.v); |
| 390 |
/* change view direction */ |
| 391 |
if (move) { |
| 392 |
if ((li = qtFindLeaf(dx, dy)) < 0) |
| 393 |
return(0); /* not on window */ |
| 394 |
for (i = 0; i < 3; i++) |
| 395 |
nv.vdir[i] = qtL.wp[li][i] - nv.vp[i]; |
| 396 |
} else { |
| 397 |
if (viewray(nv.vp, nv.vdir, &odev.v, |
| 398 |
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY) |
| 399 |
return(0); /* outside view */ |
| 400 |
} |
| 401 |
/* move viewpoint */ |
| 402 |
if (move > 0) |
| 403 |
for (i = 0; i < 3; i++) |
| 404 |
nv.vp[i] += MOVPCT/100. * nv.vdir[i]; |
| 405 |
else if (move < 0) |
| 406 |
for (i = 0; i < 3; i++) |
| 407 |
nv.vp[i] -= MOVPCT/100. * nv.vdir[i]; |
| 408 |
if (move && headlocked) { |
| 409 |
d = 0; /* bring head back to same height */ |
| 410 |
for (i = 0; i < 3; i++) |
| 411 |
d += odev.v.vup[i] * (odev.v.vp[i] - nv.vp[i]); |
| 412 |
for (i = 0; i < 3; i++) |
| 413 |
nv.vp[i] += d * odev.v.vup[i]; |
| 414 |
} |
| 415 |
if (setview(&nv) != NULL) |
| 416 |
return(0); /* illegal view */ |
| 417 |
dev_view(&nv); |
| 418 |
inpresflags |= DEV_NEWVIEW; |
| 419 |
return(1); |
| 420 |
} |
| 421 |
|
| 422 |
|
| 423 |
static |
| 424 |
getmove(ebut) /* get view change */ |
| 425 |
XButtonPressedEvent *ebut; |
| 426 |
{ |
| 427 |
int whichbutton = ebut->button; |
| 428 |
int oldnodesiz = qtMinNodesiz; |
| 429 |
Window rootw, childw; |
| 430 |
int rootx, rooty, wx, wy; |
| 431 |
unsigned int statemask; |
| 432 |
|
| 433 |
qtMinNodesiz = 16; /* for quicker update */ |
| 434 |
qtCompost(50); |
| 435 |
|
| 436 |
do { |
| 437 |
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
| 438 |
&rootx, &rooty, &wx, &wy, &statemask)) |
| 439 |
break; /* on another screen */ |
| 440 |
|
| 441 |
if (!moveview(wx, odev.vres-1-wy, MOVDIR(whichbutton))) |
| 442 |
sleep(1); |
| 443 |
else |
| 444 |
qtUpdate(); |
| 445 |
|
| 446 |
} while (!XCheckMaskEvent(ourdisplay, |
| 447 |
ButtonReleaseMask, levptr(XEvent))); |
| 448 |
|
| 449 |
if (!(inpresflags & DEV_NEWVIEW)) { /* do final motion */ |
| 450 |
whichbutton = levptr(XButtonReleasedEvent)->button; |
| 451 |
wx = levptr(XButtonReleasedEvent)->x; |
| 452 |
wy = levptr(XButtonReleasedEvent)->y; |
| 453 |
moveview(wx, odev.vres-1-wy, MOVDIR(whichbutton)); |
| 454 |
} |
| 455 |
|
| 456 |
qtMinNodesiz = oldnodesiz; /* restore quadtree resolution */ |
| 457 |
} |
| 458 |
|
| 459 |
|
| 460 |
static |
| 461 |
getkey(ekey) /* get input key */ |
| 462 |
register XKeyPressedEvent *ekey; |
| 463 |
{ |
| 464 |
int n; |
| 465 |
char buf[8]; |
| 466 |
|
| 467 |
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
| 468 |
if (n != 1) |
| 469 |
return; |
| 470 |
switch (buf[0]) { |
| 471 |
case 'h': /* turn on height motion lock */ |
| 472 |
headlocked = 1; |
| 473 |
return; |
| 474 |
case 'H': /* turn off height motion lock */ |
| 475 |
headlocked = 0; |
| 476 |
return; |
| 477 |
case CTRL('Z'): |
| 478 |
case 'p': /* pause computation */ |
| 479 |
inpresflags |= DEV_WAIT; |
| 480 |
return; |
| 481 |
case '\n': |
| 482 |
case '\r': /* release */ |
| 483 |
return; |
| 484 |
case CTRL('R'): /* redraw */ |
| 485 |
if (ncolors > 0) |
| 486 |
new_ctab(ncolors); |
| 487 |
qtRedraw(0, 0, odev.hres, odev.vres); |
| 488 |
return; |
| 489 |
case CTRL('D'): |
| 490 |
case 'Q': |
| 491 |
case 'q': /* quit the program */ |
| 492 |
inpresflags |= DEV_SHUTDOWN; |
| 493 |
return; |
| 494 |
default: |
| 495 |
XBell(ourdisplay, 0); |
| 496 |
return; |
| 497 |
} |
| 498 |
} |
| 499 |
|
| 500 |
|
| 501 |
static |
| 502 |
fixwindow(eexp) /* repair damage to window */ |
| 503 |
register XExposeEvent *eexp; |
| 504 |
{ |
| 505 |
if (odev.hres == 0 || odev.vres == 0) { /* first exposure */ |
| 506 |
odev.hres = eexp->width; |
| 507 |
odev.vres = eexp->height; |
| 508 |
inpresflags |= DEV_NEWSIZE; |
| 509 |
} |
| 510 |
qtRedraw(eexp->x, odev.vres - eexp->y - eexp->height, |
| 511 |
eexp->x + eexp->width, odev.vres - eexp->y); |
| 512 |
} |
| 513 |
|
| 514 |
|
| 515 |
static |
| 516 |
resizewindow(ersz) /* resize window */ |
| 517 |
register XConfigureEvent *ersz; |
| 518 |
{ |
| 519 |
if (ersz->width == odev.hres && ersz->height == odev.vres) |
| 520 |
return; |
| 521 |
|
| 522 |
if (odev.hres != 0 && odev.vres != 0) { |
| 523 |
odev.v.horiz = 2.*180./PI * atan( |
| 524 |
tan(PI/180./2.*odev.v.horiz) * ersz->width/odev.hres ); |
| 525 |
odev.v.vert = 2.*180./PI * atan( |
| 526 |
tan(PI/180./2.*odev.v.vert) * ersz->height/odev.vres ); |
| 527 |
inpresflags |= DEV_NEWVIEW; |
| 528 |
} |
| 529 |
odev.hres = ersz->width; |
| 530 |
odev.vres = ersz->height; |
| 531 |
|
| 532 |
inpresflags |= DEV_NEWSIZE; |
| 533 |
} |
