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/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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/* |
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* OpenGL GLX driver for holodeck display. |
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* Based on x11 driver. |
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* Based on old GLX driver using cones. |
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* |
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* Define symbol STEREO for stereo viewing. |
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* Define symbol DOBJ for display object viewing. |
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*/ |
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|
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#ifdef NOSTEREO |
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#ifdef STEREO |
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#undef STEREO |
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#else |
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#undef NOSTEREO |
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#endif |
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#endif |
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|
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#include "standard.h" |
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#include "tonemap.h" |
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#include "rhdriver.h" |
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|
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#include <GL/glx.h> |
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|
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#include "x11icon.h" |
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|
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#ifndef FEQ |
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#define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY) |
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#include <sys/types.h> |
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#include <GL/glx.h> |
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#include <GL/glu.h> |
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#ifdef STEREO |
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#include <X11/extensions/SGIStereo.h> |
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#endif |
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|
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#ifndef int4 |
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#define int4 int |
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#include "rhd_sample.h" |
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#ifdef DOBJ |
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#include "rhdobj.h" |
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#endif |
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|
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#ifndef FREEPCT |
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#define FREEPCT 10 /* percentage of values to free */ |
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#include "x11icon.h" |
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|
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#ifndef RAYQLEN |
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#define RAYQLEN 1024 /* max. rays to queue before flush */ |
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#endif |
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|
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#ifndef NCONEV |
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#define NCONEV 7 /* number of cone base vertices */ |
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#ifndef FEQ |
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#define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY) |
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#endif |
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#ifndef CONEH |
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#define CONEH 3. /* cone height (fraction of depth) */ |
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#endif |
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#ifndef CONEW |
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#define CONEW 0.05 /* cone width (fraction of screen) */ |
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#endif |
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#ifndef DIRPEN |
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#define DIRPEN 0.001 /* direction penalty factor */ |
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#endif |
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#ifndef VALUA |
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#define VALUA 16 /* target value area (pixels) */ |
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#endif |
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|
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#define GAMMA 1.4 /* default gamma correction */ |
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|
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#define FRAMESTATE(s) (((s)&(ShiftMask|ControlMask))==(ShiftMask|ControlMask)) |
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|
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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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|
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#ifndef TARGETFPS |
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#define TARGETFPS 4.0 /* target frames/sec during motion */ |
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#endif |
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|
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#define MINWIDTH 480 /* minimum graphics window width */ |
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#define MINHEIGHT 400 /* minimum graphics window height */ |
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#define BORWIDTH 5 /* border width */ |
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#define setstereobuf(bid) (glXWaitGL(), \ |
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XSGISetStereoBuffer(ourdisplay, gwind, bid), \ |
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glXWaitX()) |
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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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|
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struct driver odev; /* global device driver structure */ |
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|
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char odev_args[64]; /* command arguments */ |
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|
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#ifdef STEREO |
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static VIEW vwright; /* right eye view */ |
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#endif |
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|
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static int rayqleft = 0; /* rays left to queue before flush */ |
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|
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static XEvent currentevent; /* current event */ |
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|
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static int mapped = 0; /* window is mapped? */ |
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static Window gwind = 0; /* our graphics window */ |
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static GLXContext gctx; /* our GLX context */ |
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|
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static double mindepth = FHUGE; /* minimum depth value so far */ |
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static double maxdepth = 0.; /* maximum depth value so far */ |
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|
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static double pwidth, pheight; /* pixel dimensions (mm) */ |
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|
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static FVECT conev[NCONEV]; /* drawing cone */ |
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static double coneh; /* cone height */ |
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static double mindpth, maxdpth; /* min. and max. depth */ |
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|
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double dev_zmin, dev_zmax; /* fore and aft clipping plane dist. */ |
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|
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static int inpresflags; /* input result flags */ |
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static int headlocked = 0; /* lock vertical motion */ |
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static int quicken = 0; /* quicker, sloppier update rate? */ |
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static int resizewindow(), getevent(), getkey(), moveview(), wipeclean(), |
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setglpersp(), getframe(), getmove(), fixwindow(), mytmflags(); |
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static struct { |
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float (*wp)[3]; /* world intersection point array */ |
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int4 *wd; /* world direction array */ |
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TMbright *brt; /* encoded brightness array */ |
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BYTE (*chr)[3]; /* encoded chrominance array */ |
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BYTE (*rgb)[3]; /* tone-mapped color array */ |
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BYTE *alpha; /* alpha values */ |
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int nl; /* count of values */ |
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int bl, tl; /* bottom and top (next) value index */ |
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int tml; /* next value needing tone-mapping */ |
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int drl; /* next value in need of drawing */ |
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char *base; /* base of allocated memory */ |
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} rV; /* our collection of values */ |
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#ifdef STEREO |
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static int pushright(), popright(); |
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#endif |
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|
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static int *valmap = NULL; /* sorted map of screen values */ |
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static int vmaplen = 0; /* value map length */ |
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extern time_t time(); |
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|
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#define redraw() (rV.drl = rV.bl) |
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|
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static int resizewindow(), getevent(), getkey(), moveview(), |
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setGLview(), getmove(), fixwindow(), mytmflags(), |
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drawvalue(), valcmp(), clralphas(), setalphas(), mergalphas(), |
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IndexValue(), Compost(), FindValue(), TMapValues(), |
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AllocValues(), FreeValues(); |
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|
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extern int4 encodedir(); |
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extern double fdir2diff(), dir2diff(); |
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|
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|
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dev_open(id) /* initialize X11 driver */ |
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dev_open(id) /* initialize GLX driver */ |
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char *id; |
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{ |
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extern char *getenv(); |
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static RGBPRIMS myprims = STDPRIMS; |
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static int atlBest[] = {GLX_RGBA, GLX_RED_SIZE,8, |
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GLX_GREEN_SIZE,8, GLX_BLUE_SIZE,8, |
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GLX_ALPHA_SIZE,8, GLX_DEPTH_SIZE,15, |
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None}; |
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char *gv; |
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GLX_DEPTH_SIZE,15, None}; |
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char *ev; |
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double gamval = GAMMA; |
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RGBPRIMP dpri = stdprims; |
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XSetWindowAttributes ourwinattr; |
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XWMHints ourxwmhints; |
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XSizeHints oursizhints; |
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/* check for unsupported stereo */ |
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#ifdef NOSTEREO |
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error(INTERNAL, "stereo display driver unavailable"); |
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#endif |
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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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#ifdef STEREO |
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switch (XSGIQueryStereoMode(ourdisplay, ourroot)) { |
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case STEREO_TOP: |
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case STEREO_BOTTOM: |
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break; |
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case STEREO_OFF: |
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error(USER, |
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"wrong video mode: run \"/usr/gfx/setmon -n STR_TOP\" first"); |
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case X_STEREO_UNSUPPORTED: |
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error(USER, "stereo mode not supported on this screen"); |
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default: |
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error(INTERNAL, "unknown stereo mode"); |
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} |
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#endif |
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/* find a usable visual */ |
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ourvinf = glXChooseVisual(ourdisplay, ourscreen, atlBest); |
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if (ourvinf == NULL) |
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/* get a context */ |
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gctx = glXCreateContext(ourdisplay, ourvinf, NULL, GL_TRUE); |
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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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if ((ev = XGetDefault(ourdisplay, "radiance", "gamma")) != NULL |
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|| (ev = getenv("DISPLAY_GAMMA")) != NULL) |
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gamval = atof(ev); |
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if ((ev = getenv("DISPLAY_PRIMARIES")) != NULL && |
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sscanf(ev, "%f %f %f %f %f %f %f %f", |
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&myprims[RED][CIEX],&myprims[RED][CIEY], |
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&myprims[GRN][CIEX],&myprims[GRN][CIEY], |
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&myprims[BLU][CIEX],&myprims[BLU][CIEY], |
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&myprims[WHT][CIEX],&myprims[WHT][CIEY]) >= 6) |
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dpri = myprims; |
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if (tmInit(mytmflags(), dpri, 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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ourvinf->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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#ifdef STEREO |
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(DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH)/2, |
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#else |
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DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH, |
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#endif |
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BORWIDTH, ourvinf->depth, InputOutput, ourvinf->visual, |
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CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &ourwinattr); |
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if (gwind == 0) |
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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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#ifdef STEREO |
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oursizhints.min_height = MINHEIGHT/2; |
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oursizhints.max_width = DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH; |
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oursizhints.max_height = (DisplayHeight(ourdisplay,ourscreen) - |
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2*BORWIDTH)/2; |
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oursizhints.flags = PMinSize|PMaxSize; |
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#else |
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oursizhints.min_height = MINHEIGHT; |
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oursizhints.flags = PMinSize; |
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#endif |
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XSetNormalHints(ourdisplay, gwind, &oursizhints); |
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/* set GLX context */ |
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glXMakeCurrent(ourdisplay, gwind, gctx); |
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glEnable(GL_DEPTH_TEST); |
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glDepthFunc(GL_LEQUAL); |
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glShadeModel(GL_FLAT); |
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> |
glShadeModel(GL_SMOOTH); |
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glDisable(GL_DITHER); |
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+ |
glDisable(GL_CULL_FACE); |
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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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+ |
#ifdef STEREO |
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+ |
pheight *= 2.; |
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setstereobuf(STEREO_BUFFER_LEFT); |
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#endif |
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+ |
checkglerr("setting rendering parameters"); |
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copystruct(&odev.v, &stdview); |
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odev.v.type = VT_PER; |
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/* map the window */ |
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XMapWindow(ourdisplay, gwind); |
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dev_input(); /* sets size and view angles */ |
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< |
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
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< |
/* allocate our value list */ |
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< |
if (!AllocValues(DisplayWidth(ourdisplay,ourscreen) * |
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< |
DisplayHeight(ourdisplay,ourscreen) / VALUA)) |
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> |
/* allocate our samples */ |
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> |
if (!smInit(DisplayWidth(ourdisplay,ourscreen) * |
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> |
DisplayHeight(ourdisplay,ourscreen) / 10)) |
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error(SYSTEM, "insufficient memory for value storage"); |
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+ |
mindpth = FHUGE; maxdpth = FTINY; |
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odev.name = id; |
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odev.ifd = ConnectionNumber(ourdisplay); |
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} |
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|
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dev_close() /* close our display and free resources */ |
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{ |
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+ |
smInit(0); |
| 245 |
+ |
#ifdef DOBJ |
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+ |
dobj_cleanup(); |
| 247 |
+ |
#endif |
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glXMakeCurrent(ourdisplay, None, NULL); |
| 249 |
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glXDestroyContext(ourdisplay, gctx); |
| 250 |
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XDestroyWindow(ourdisplay, gwind); |
| 252 |
|
XCloseDisplay(ourdisplay); |
| 253 |
|
ourdisplay = NULL; |
| 254 |
|
tmDone(NULL); |
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– |
FreeValues(); |
| 255 |
|
odev.v.type = 0; |
| 256 |
|
odev.hres = odev.vres = 0; |
| 257 |
|
odev.ifd = -1; |
| 258 |
|
} |
| 259 |
|
|
| 260 |
|
|
| 261 |
+ |
dev_clear() /* clear our representation */ |
| 262 |
+ |
{ |
| 263 |
+ |
smInit(rsL.max_samp); |
| 264 |
+ |
wipeclean(); |
| 265 |
+ |
rayqleft = 0; /* hold off update */ |
| 266 |
+ |
} |
| 267 |
+ |
|
| 268 |
+ |
|
| 269 |
|
int |
| 270 |
|
dev_view(nv) /* assign new driver view */ |
| 271 |
|
register VIEW *nv; |
| 272 |
|
{ |
| 273 |
+ |
double d; |
| 274 |
+ |
|
| 275 |
|
if (nv->type != VT_PER || /* check view legality */ |
| 276 |
< |
nv->horiz > 120. || nv->vert > 120.) { |
| 276 |
> |
nv->horiz > 160. || nv->vert > 160.) { |
| 277 |
|
error(COMMAND, "illegal view type/angle"); |
| 278 |
< |
nv->type = VT_PER; |
| 278 |
> |
nv->type = odev.v.type; |
| 279 |
|
nv->horiz = odev.v.horiz; |
| 280 |
|
nv->vert = odev.v.vert; |
| 281 |
|
return(0); |
| 282 |
|
} |
| 283 |
|
if (nv != &odev.v) { |
| 284 |
< |
if (!FEQ(nv->horiz,odev.v.horiz) || /* resize window? */ |
| 284 |
> |
/* resize window? */ |
| 285 |
> |
if (!FEQ(nv->horiz,odev.v.horiz) || |
| 286 |
|
!FEQ(nv->vert,odev.v.vert)) { |
| 287 |
|
int dw = DisplayWidth(ourdisplay,ourscreen); |
| 288 |
|
int dh = DisplayHeight(ourdisplay,ourscreen); |
| 289 |
|
|
| 290 |
|
dw -= 25; /* for window frame */ |
| 291 |
|
dh -= 50; |
| 292 |
+ |
#ifdef STEREO |
| 293 |
+ |
dh /= 2; |
| 294 |
+ |
#endif |
| 295 |
|
odev.hres = 2.*VIEWDIST/pwidth * |
| 296 |
|
tan(PI/180./2.*nv->horiz); |
| 297 |
|
odev.vres = 2.*VIEWDIST/pheight * |
| 307 |
|
XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres); |
| 308 |
|
dev_input(); /* get resize event */ |
| 309 |
|
} |
| 310 |
< |
copystruct(&odev.v, nv); |
| 256 |
< |
setGLview(); |
| 257 |
< |
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
| 258 |
< |
redraw(); |
| 310 |
> |
copystruct(&odev.v, nv); /* setview() already called */ |
| 311 |
|
} |
| 312 |
+ |
#ifdef STEREO |
| 313 |
+ |
copystruct(&vwright, nv); |
| 314 |
+ |
d = eyesepdist / sqrt(nv->hn2); |
| 315 |
+ |
VSUM(vwright.vp, nv->vp, nv->hvec, d); |
| 316 |
+ |
/* setview(&vwright); -- Unnecessary */ |
| 317 |
+ |
#endif |
| 318 |
+ |
wipeclean(); |
| 319 |
|
return(1); |
| 320 |
|
} |
| 321 |
|
|
| 322 |
|
|
| 323 |
< |
int |
| 324 |
< |
dev_input() /* get X11 input */ |
| 323 |
> |
dev_section(gfn, pfn) /* add octree for geometry rendering */ |
| 324 |
> |
char *gfn, *pfn; |
| 325 |
|
{ |
| 326 |
< |
inpresflags = 0; |
| 268 |
< |
|
| 269 |
< |
do |
| 270 |
< |
getevent(); |
| 271 |
< |
|
| 272 |
< |
while (XQLength(ourdisplay) > 0); |
| 273 |
< |
|
| 274 |
< |
return(inpresflags); |
| 326 |
> |
/* unimplemented */ |
| 327 |
|
} |
| 328 |
|
|
| 329 |
|
|
| 330 |
< |
dev_value(c, p, v) /* add a pixel value to our list */ |
| 331 |
< |
COLR c; |
| 280 |
< |
FVECT p, v; |
| 330 |
> |
dev_auxcom(cmd, args) /* process an auxiliary command */ |
| 331 |
> |
char *cmd, *args; |
| 332 |
|
{ |
| 333 |
< |
register int li; |
| 334 |
< |
|
| 284 |
< |
li = rV.tl++; |
| 285 |
< |
if (rV.tl >= rV.nl) /* get next leaf in ring */ |
| 286 |
< |
rV.tl = 0; |
| 287 |
< |
if (rV.tl == rV.bl) /* need to shake some free */ |
| 288 |
< |
Compost(FREEPCT); |
| 289 |
< |
VCOPY(rV.wp[li], p); |
| 290 |
< |
rV.wd[li] = encodedir(v); |
| 291 |
< |
tmCvColrs(&rV.brt[li], rV.chr[li], c, 1); |
| 292 |
< |
} |
| 293 |
< |
|
| 294 |
< |
|
| 295 |
< |
int |
| 296 |
< |
dev_flush() /* flush output */ |
| 297 |
< |
{ |
| 298 |
< |
if (mapped) { |
| 299 |
< |
TMapValues(0); |
| 300 |
< |
while (rV.drl != rV.tl) { |
| 301 |
< |
drawvalue(rV.drl); |
| 302 |
< |
if (++rV.drl >= rV.nl) |
| 303 |
< |
rV.drl = 0; |
| 304 |
< |
} |
| 305 |
< |
glFlush(); |
| 306 |
< |
} |
| 307 |
< |
return(XPending(ourdisplay)); |
| 308 |
< |
} |
| 309 |
< |
|
| 310 |
< |
|
| 311 |
< |
static int |
| 312 |
< |
mytmflags() /* figure out tone mapping flags */ |
| 313 |
< |
{ |
| 314 |
< |
extern char *progname; |
| 315 |
< |
register char *cp, *tail; |
| 316 |
< |
/* find basic name */ |
| 317 |
< |
for (cp = tail = progname; *cp; cp++) |
| 318 |
< |
if (*cp == '/') |
| 319 |
< |
tail = cp+1; |
| 320 |
< |
for (cp = tail; *cp && *cp != '.'; cp++) |
| 321 |
< |
; |
| 322 |
< |
if (cp-tail == 3 && !strncmp(tail, "glx", 3)) |
| 323 |
< |
return(TM_F_CAMERA); |
| 324 |
< |
if (cp-tail == 4 && !strncmp(tail, "glxh", 4)) |
| 325 |
< |
return(TM_F_HUMAN); |
| 326 |
< |
error(USER, "illegal driver name"); |
| 327 |
< |
} |
| 328 |
< |
|
| 329 |
< |
|
| 330 |
< |
static |
| 331 |
< |
setGLview() /* set our GL view */ |
| 332 |
< |
{ |
| 333 |
< |
double xmin, xmax, ymin, ymax, zmin, zmax; |
| 334 |
< |
double d, cx, sx, crad; |
| 335 |
< |
FVECT vx, vy; |
| 336 |
< |
register int i, j; |
| 337 |
< |
/* compute view frustum */ |
| 338 |
< |
if (normalize(odev.v.vdir) == 0.0) |
| 333 |
> |
#ifdef DOBJ |
| 334 |
> |
if (dobj_command(cmd, args) >= 0) |
| 335 |
|
return; |
| 336 |
< |
if (mindepth < maxdepth) { |
| 337 |
< |
zmin = 0.25*mindepth; |
| 338 |
< |
zmax = 4.0*(1.+CONEH)*maxdepth; |
| 343 |
< |
} else { |
| 344 |
< |
zmin = 0.01; |
| 345 |
< |
zmax = 1000.; |
| 346 |
< |
} |
| 347 |
< |
if (odev.v.vfore > FTINY) |
| 348 |
< |
zmin = odev.v.vfore; |
| 349 |
< |
if (odev.v.vaft > FTINY) |
| 350 |
< |
zmax = odev.v.vaft; |
| 351 |
< |
xmax = zmin * tan(PI/180./2. * odev.v.horiz); |
| 352 |
< |
xmin = -xmax; |
| 353 |
< |
d = odev.v.hoff * (xmax - xmin); |
| 354 |
< |
xmin += d; xmax += d; |
| 355 |
< |
ymax = zmin * tan(PI/180./2. * odev.v.vert); |
| 356 |
< |
ymin = -ymax; |
| 357 |
< |
d = odev.v.voff * (ymax - ymin); |
| 358 |
< |
ymin += d; ymax += d; |
| 359 |
< |
/* set view matrix */ |
| 360 |
< |
glMatrixMode(GL_PROJECTION); |
| 361 |
< |
glLoadIdentity(); |
| 362 |
< |
glFrustum(xmin, xmax, ymin, ymax, zmin, zmax); |
| 363 |
< |
gluLookAt(odev.v.vp[0], odev.v.vp[1], odev.v.vp[2], |
| 364 |
< |
odev.v.vp[0] + odev.v.vdir[0], |
| 365 |
< |
odev.v.vp[1] + odev.v.vdir[1], |
| 366 |
< |
odev.v.vp[2] + odev.v.vdir[2], |
| 367 |
< |
odev.v.vup[0], odev.v.vup[1], odev.v.vup[2]); |
| 368 |
< |
/* set viewport */ |
| 369 |
< |
glViewport(0, 0, odev.hres, odev.vres); |
| 370 |
< |
/* initialize cone for Vornoi polys */ |
| 371 |
< |
coneh = CONEH*(zmax - zmin); |
| 372 |
< |
crad = 0.5 * CONEW * 0.5*(xmax-xmin + ymax-ymin) * (zmin+coneh)/zmin; |
| 373 |
< |
vy[0] = vy[1] = vy[2] = 0.; |
| 374 |
< |
for (i = 0; i < 3; i++) |
| 375 |
< |
if (odev.v.vdir[i] < 0.6 && odev.v.vdir[i] > -0.6) |
| 376 |
< |
break; |
| 377 |
< |
vy[i] = 1.; |
| 378 |
< |
fcross(vx, vy, odev.v.vdir); |
| 379 |
< |
normalize(vx); |
| 380 |
< |
fcross(vy, odev.v.vdir, vx); |
| 381 |
< |
for (j = 0, d = 0.; j < NCONEV; j++, d += 2.*PI/NCONEV) { |
| 382 |
< |
cx = crad*cos(d); sx = crad*sin(d); |
| 383 |
< |
for (i = 0; i < 3; i++) |
| 384 |
< |
conev[j][i] = coneh*odev.v.vdir[i] + |
| 385 |
< |
cx*vx[i] + sx*vy[i]; |
| 386 |
< |
} |
| 336 |
> |
#endif |
| 337 |
> |
sprintf(errmsg, "%s: unknown command", cmd); |
| 338 |
> |
error(COMMAND, errmsg); |
| 339 |
|
} |
| 340 |
|
|
| 341 |
|
|
| 342 |
< |
#define SUCCSTEP 8 /* skip step when successful */ |
| 343 |
< |
#define MAXSTEP 64 |
| 344 |
< |
|
| 345 |
< |
static |
| 394 |
< |
drawvalue(li) /* draw a pixel value as a cone */ |
| 395 |
< |
register int li; |
| 342 |
> |
VIEW * |
| 343 |
> |
dev_auxview(n, hvres) /* return nth auxiliary view */ |
| 344 |
> |
int n; |
| 345 |
> |
int hvres[2]; |
| 346 |
|
{ |
| 347 |
< |
static int skipstep = 1; |
| 348 |
< |
static FVECT disp; |
| 349 |
< |
FVECT apex; |
| 350 |
< |
double d, dorg, dnew, h, v; |
| 351 |
< |
register int i; |
| 352 |
< |
/* check for quicker update */ |
| 353 |
< |
if (quicken) { |
| 354 |
< |
if (li % skipstep) |
| 405 |
< |
return; |
| 406 |
< |
if (skipstep < MAXSTEP) |
| 407 |
< |
skipstep++; |
| 408 |
< |
} |
| 409 |
< |
/* compute cone coordinates */ |
| 410 |
< |
disp[0] = rV.wp[li][0] - odev.v.vp[0]; |
| 411 |
< |
disp[1] = rV.wp[li][1] - odev.v.vp[1]; |
| 412 |
< |
disp[2] = rV.wp[li][2] - odev.v.vp[2]; |
| 413 |
< |
dorg = DOT(disp,odev.v.vdir); |
| 414 |
< |
if (dorg <= odev.v.vfore) |
| 415 |
< |
return; /* clipped too near */ |
| 416 |
< |
if (odev.v.vaft > FTINY && dorg > odev.v.vaft) |
| 417 |
< |
return; /* clipped too far */ |
| 418 |
< |
if (dorg > 1e5) { /* background pixel */ |
| 419 |
< |
dnew = maxdepth; |
| 420 |
< |
d = dnew/dorg; |
| 421 |
< |
dorg = maxdepth; |
| 422 |
< |
} else { /* foreground pixel, compute penalty */ |
| 423 |
< |
normalize(disp); |
| 424 |
< |
d = dnew = dorg + coneh*fdir2diff(rV.wd[li],disp)*DIRPEN; |
| 425 |
< |
} |
| 426 |
< |
/* compute adjusted apex position */ |
| 427 |
< |
disp[0] *= d; disp[1] *= d; disp[2] *= d; |
| 428 |
< |
apex[0] = odev.v.vp[0] + disp[0]; |
| 429 |
< |
apex[1] = odev.v.vp[1] + disp[1]; |
| 430 |
< |
apex[2] = odev.v.vp[2] + disp[2]; |
| 431 |
< |
/* compute view position and base offset */ |
| 432 |
< |
h = DOT(disp,odev.v.hvec)/(dnew*odev.v.hn2); |
| 433 |
< |
v = DOT(disp,odev.v.vvec)/(dnew*odev.v.vn2); |
| 434 |
< |
if (fabs(h - odev.v.hoff) > 0.5 || fabs(v - odev.v.voff) > 0.5) |
| 435 |
< |
return; /* clipped off screen */ |
| 436 |
< |
if (dorg < mindepth) |
| 437 |
< |
mindepth = dorg; |
| 438 |
< |
if (dorg > maxdepth) |
| 439 |
< |
maxdepth = dorg; |
| 440 |
< |
for (i = 0; i < 3; i++) |
| 441 |
< |
disp[i] = apex[i] + coneh*(h*odev.v.hvec[i] + v*odev.v.vvec[i]); |
| 442 |
< |
/* draw cone (pyramid approx.) */ |
| 443 |
< |
glColor4ub(rV.rgb[li][0], rV.rgb[li][1], rV.rgb[li][2], rV.alpha[li]); |
| 444 |
< |
glBegin(GL_TRIANGLE_FAN); |
| 445 |
< |
glVertex3f(apex[0], apex[1], apex[2]); |
| 446 |
< |
for (i = 0; i < NCONEV; i++) |
| 447 |
< |
glVertex3d(conev[i][0] + disp[0], conev[i][1] + disp[1], |
| 448 |
< |
conev[i][2] + disp[2]); |
| 449 |
< |
/* connect last face to first */ |
| 450 |
< |
glVertex3d(conev[0][0] + disp[0], conev[0][1] + disp[1], |
| 451 |
< |
conev[0][2] + disp[2]); |
| 452 |
< |
glEnd(); /* done */ |
| 453 |
< |
skipstep = SUCCSTEP; |
| 347 |
> |
hvres[0] = odev.hres; hvres[1] = odev.vres; |
| 348 |
> |
if (n == 0) |
| 349 |
> |
return(&odev.v); |
| 350 |
> |
#ifdef STEREO |
| 351 |
> |
if (n == 1) |
| 352 |
> |
return(&vwright); |
| 353 |
> |
#endif |
| 354 |
> |
return(NULL); |
| 355 |
|
} |
| 356 |
|
|
| 456 |
– |
#undef SUCCSTEP |
| 457 |
– |
#undef MAXSTEP |
| 357 |
|
|
| 358 |
< |
|
| 359 |
< |
#define LEAFSIZ (3*sizeof(float)+sizeof(int4)+\ |
| 461 |
< |
sizeof(TMbright)+7*sizeof(BYTE)) |
| 462 |
< |
|
| 463 |
< |
static |
| 464 |
< |
AllocValues(n) /* allocate space for n values */ |
| 465 |
< |
register int n; |
| 358 |
> |
int |
| 359 |
> |
dev_input() /* get X11 input */ |
| 360 |
|
{ |
| 361 |
< |
unsigned nbytes; |
| 468 |
< |
register unsigned i; |
| 361 |
> |
inpresflags = 0; |
| 362 |
|
|
| 363 |
< |
if (n <= 0) |
| 364 |
< |
return(0); |
| 472 |
< |
if (rV.nl >= n) |
| 473 |
< |
return(rV.nl); |
| 474 |
< |
else if (rV.nl > 0) |
| 475 |
< |
free(rV.base); |
| 476 |
< |
/* round space up to nearest power of 2 */ |
| 477 |
< |
nbytes = n*LEAFSIZ + 8; |
| 478 |
< |
for (i = 1024; nbytes > i; i <<= 1) |
| 479 |
< |
; |
| 480 |
< |
n = (i - 8) / LEAFSIZ; /* should we make sure n is even? */ |
| 481 |
< |
rV.base = (char *)malloc(n*LEAFSIZ); |
| 482 |
< |
if (rV.base == NULL) |
| 483 |
< |
return(0); |
| 484 |
< |
/* assign larger alignment types earlier */ |
| 485 |
< |
rV.wp = (float (*)[3])rV.base; |
| 486 |
< |
rV.wd = (int4 *)(rV.wp + n); |
| 487 |
< |
rV.brt = (TMbright *)(rV.wd + n); |
| 488 |
< |
rV.chr = (BYTE (*)[3])(rV.brt + n); |
| 489 |
< |
rV.rgb = (BYTE (*)[3])(rV.chr + n); |
| 490 |
< |
rV.alpha = (BYTE *)(rV.rgb + n); |
| 491 |
< |
rV.nl = n; |
| 492 |
< |
rV.drl = rV.tml = rV.bl = rV.tl = 0; |
| 493 |
< |
return(n); |
| 494 |
< |
} |
| 363 |
> |
do |
| 364 |
> |
getevent(); |
| 365 |
|
|
| 366 |
< |
#undef LEAFSIZ |
| 366 |
> |
while (XPending(ourdisplay) > 0); |
| 367 |
|
|
| 368 |
+ |
odev.inpready = 0; |
| 369 |
|
|
| 370 |
< |
static |
| 500 |
< |
FreeValues() /* free our allocated values */ |
| 501 |
< |
{ |
| 502 |
< |
if (rV.nl <= 0) |
| 503 |
< |
return; |
| 504 |
< |
free(rV.base); |
| 505 |
< |
rV.base = NULL; |
| 506 |
< |
rV.nl = 0; |
| 370 |
> |
return(inpresflags); |
| 371 |
|
} |
| 372 |
|
|
| 373 |
|
|
| 374 |
< |
static |
| 375 |
< |
clralphas() /* prepare for new alpha values */ |
| 374 |
> |
dev_value(c, d, p) /* add a pixel value to our mesh */ |
| 375 |
> |
COLR c; |
| 376 |
> |
FVECT d, p; |
| 377 |
|
{ |
| 378 |
< |
if (!vmaplen) |
| 378 |
> |
double depth; |
| 379 |
> |
#ifdef DOBJ |
| 380 |
> |
if (dobj_lightsamp != NULL) { /* in light source sampling */ |
| 381 |
> |
(*dobj_lightsamp)(c, d, p); |
| 382 |
|
return; |
| 383 |
< |
free((char *)valmap); |
| 384 |
< |
valmap = NULL; |
| 385 |
< |
vmaplen = 0; |
| 383 |
> |
} |
| 384 |
> |
#endif |
| 385 |
> |
if (p != NULL) { /* add depth to our range */ |
| 386 |
> |
depth = (p[0] - odev.v.vp[0])*d[0] + |
| 387 |
> |
(p[1] - odev.v.vp[1])*d[1] + |
| 388 |
> |
(p[2] - odev.v.vp[2])*d[2]; |
| 389 |
> |
if (depth > FTINY) { |
| 390 |
> |
if (depth < mindpth) |
| 391 |
> |
mindpth = depth; |
| 392 |
> |
if (depth > maxdpth) |
| 393 |
> |
maxdpth = depth; |
| 394 |
> |
} |
| 395 |
> |
} |
| 396 |
> |
smNewSamp(c, d, p); /* add to display representation */ |
| 397 |
> |
if (!--rayqleft) |
| 398 |
> |
dev_flush(); /* flush output */ |
| 399 |
|
} |
| 400 |
|
|
| 401 |
|
|
| 402 |
< |
static int |
| 403 |
< |
valcmp(v1p, v2p) /* compare two pixel values */ |
| 523 |
< |
int *v1p, *v2p; |
| 402 |
> |
int |
| 403 |
> |
dev_flush() /* flush output */ |
| 404 |
|
{ |
| 405 |
< |
register int v1 = *v1p, v2 = *v2p; |
| 406 |
< |
register int c; |
| 407 |
< |
|
| 408 |
< |
if ((c = rV.rgb[v1][0] - rV.rgb[v2][0])) return(c); |
| 409 |
< |
if ((c = rV.rgb[v1][1] - rV.rgb[v2][1])) return(c); |
| 410 |
< |
if ((c = rV.rgb[v1][2] - rV.rgb[v2][2])) return(c); |
| 411 |
< |
return(rV.alpha[v1] - rV.alpha[v2]); |
| 405 |
> |
if (mapped) { |
| 406 |
> |
#ifdef STEREO |
| 407 |
> |
pushright(); /* update right eye */ |
| 408 |
> |
smUpdate(&vwright, 100); |
| 409 |
> |
#ifdef DOBJ |
| 410 |
> |
dobj_render(); /* usually in foreground */ |
| 411 |
> |
#endif |
| 412 |
> |
popright(); /* update left eye */ |
| 413 |
> |
#endif |
| 414 |
> |
smUpdate(&odev.v, 100); |
| 415 |
> |
checkglerr("rendering mesh"); |
| 416 |
> |
#ifdef DOBJ |
| 417 |
> |
dobj_render(); |
| 418 |
> |
#endif |
| 419 |
> |
glFlush(); /* flush OGL */ |
| 420 |
> |
} |
| 421 |
> |
rayqleft = RAYQLEN; |
| 422 |
> |
/* flush X11 and return # pending */ |
| 423 |
> |
return(odev.inpready = XPending(ourdisplay)); |
| 424 |
|
} |
| 425 |
|
|
| 426 |
|
|
| 427 |
< |
static |
| 428 |
< |
mergalphas(adest, al1, n1, al2, n2) /* merge two sorted alpha lists */ |
| 537 |
< |
register int *adest, *al1, *al2; |
| 538 |
< |
int n1, n2; |
| 427 |
> |
checkglerr(where) /* check for GL or GLU error */ |
| 428 |
> |
char *where; |
| 429 |
|
{ |
| 430 |
< |
register int cmp; |
| 430 |
> |
register GLenum errcode; |
| 431 |
|
|
| 432 |
< |
while (n1 | n2) { |
| 433 |
< |
if (!n1) cmp = 1; |
| 434 |
< |
else if (!n2) cmp = -1; |
| 435 |
< |
else cmp = valcmp(al1, al2); |
| 546 |
< |
if (cmp > 0) { |
| 547 |
< |
*adest++ = *al2++; |
| 548 |
< |
n2--; |
| 549 |
< |
} else { |
| 550 |
< |
*adest++ = *al1++; |
| 551 |
< |
n1--; |
| 552 |
< |
} |
| 432 |
> |
while ((errcode = glGetError()) != GL_NO_ERROR) { |
| 433 |
> |
sprintf(errmsg, "OpenGL error %s: %s", |
| 434 |
> |
where, gluErrorString(errcode)); |
| 435 |
> |
error(WARNING, errmsg); |
| 436 |
|
} |
| 437 |
|
} |
| 438 |
|
|
| 439 |
|
|
| 440 |
+ |
#ifdef STEREO |
| 441 |
|
static |
| 442 |
< |
setalphas(vbeg, nvals) /* add values to our map and set alphas */ |
| 559 |
< |
int vbeg, nvals; |
| 442 |
> |
pushright() /* push on right view */ |
| 443 |
|
{ |
| 444 |
< |
register int *newmap; |
| 562 |
< |
short ccmp[3], lastalpha; |
| 563 |
< |
int newmaplen; |
| 444 |
> |
double d; |
| 445 |
|
|
| 446 |
< |
if (nvals <= 0) |
| 447 |
< |
return; |
| 448 |
< |
newmaplen = vmaplen + nvals; /* allocate new map */ |
| 449 |
< |
newmap = (int *)malloc(newmaplen*sizeof(int)); |
| 450 |
< |
if (newmap == NULL) |
| 451 |
< |
error(SYSTEM, "out of memory in setalphas"); |
| 571 |
< |
while (nvals--) { /* add new values to end */ |
| 572 |
< |
rV.alpha[vbeg] = 255; |
| 573 |
< |
newmap[vmaplen+nvals] = vbeg++; |
| 574 |
< |
} |
| 575 |
< |
if (nvals >= 3*vmaplen) { /* resort the combined array */ |
| 576 |
< |
while (vmaplen--) |
| 577 |
< |
newmap[vmaplen] = valmap[vmaplen]; |
| 578 |
< |
qsort((char *)newmap, newmaplen, sizeof(int), valcmp); |
| 579 |
< |
} else { /* perform merge sort */ |
| 580 |
< |
qsort((char *)(newmap+vmaplen), newmaplen-vmaplen, |
| 581 |
< |
sizeof(int), valcmp); |
| 582 |
< |
mergalphas(newmap, valmap, vmaplen, |
| 583 |
< |
newmap+vmaplen, newmaplen-vmaplen); |
| 584 |
< |
} |
| 585 |
< |
if (valmap != NULL) /* free old map and assign new one */ |
| 586 |
< |
free((char *)valmap); |
| 587 |
< |
valmap = newmap; |
| 588 |
< |
vmaplen = newmaplen; |
| 589 |
< |
lastalpha = 0; /* set new alpha values */ |
| 590 |
< |
ccmp[0] = ccmp[1] = ccmp[2] = 256; |
| 591 |
< |
while (newmaplen--) |
| 592 |
< |
if (rV.rgb[*newmap][0] == ccmp[0] && |
| 593 |
< |
rV.rgb[*newmap][1] == ccmp[1] && |
| 594 |
< |
rV.rgb[*newmap][2] == ccmp[2]) { |
| 595 |
< |
if (lastalpha >= 255) |
| 596 |
< |
newmap++; |
| 597 |
< |
else if (rV.alpha[*newmap] < 255) |
| 598 |
< |
lastalpha = rV.alpha[*newmap++]; |
| 599 |
< |
else |
| 600 |
< |
rV.alpha[*newmap++] = ++lastalpha; |
| 601 |
< |
} else { |
| 602 |
< |
ccmp[0] = rV.rgb[*newmap][0]; |
| 603 |
< |
ccmp[1] = rV.rgb[*newmap][1]; |
| 604 |
< |
ccmp[2] = rV.rgb[*newmap][2]; |
| 605 |
< |
if (rV.alpha[*newmap] < 255) |
| 606 |
< |
lastalpha = rV.alpha[*newmap++]; |
| 607 |
< |
else |
| 608 |
< |
rV.alpha[*newmap++] = lastalpha = 1; |
| 609 |
< |
} |
| 446 |
> |
setstereobuf(STEREO_BUFFER_RIGHT); |
| 447 |
> |
glMatrixMode(GL_MODELVIEW); |
| 448 |
> |
glPushMatrix(); |
| 449 |
> |
d = -eyesepdist / sqrt(odev.v.hn2); |
| 450 |
> |
glTranslated(d*odev.v.hvec[0], d*odev.v.hvec[1], d*odev.v.hvec[2]); |
| 451 |
> |
checkglerr("setting right view"); |
| 452 |
|
} |
| 453 |
|
|
| 454 |
|
|
| 455 |
|
static |
| 456 |
< |
TMapValues(redo) /* map our values to RGB */ |
| 615 |
< |
int redo; |
| 456 |
> |
popright() /* pop off right view */ |
| 457 |
|
{ |
| 458 |
< |
int aorg, alen, borg, blen; |
| 459 |
< |
/* recompute mapping? */ |
| 460 |
< |
if (redo) |
| 620 |
< |
rV.tml = rV.bl; |
| 621 |
< |
/* already done? */ |
| 622 |
< |
if (rV.tml == rV.tl) |
| 623 |
< |
return(1); |
| 624 |
< |
/* compute segments */ |
| 625 |
< |
aorg = rV.tml; |
| 626 |
< |
if (rV.tl >= aorg) { |
| 627 |
< |
alen = rV.tl - aorg; |
| 628 |
< |
blen = 0; |
| 629 |
< |
} else { |
| 630 |
< |
alen = rV.nl - aorg; |
| 631 |
< |
borg = 0; |
| 632 |
< |
blen = rV.tl; |
| 633 |
< |
} |
| 634 |
< |
/* (re)compute tone mapping? */ |
| 635 |
< |
if (rV.tml == rV.bl) { |
| 636 |
< |
tmClearHisto(); |
| 637 |
< |
tmAddHisto(rV.brt+aorg, alen, 1); |
| 638 |
< |
if (blen > 0) |
| 639 |
< |
tmAddHisto(rV.brt+borg, blen, 1); |
| 640 |
< |
if (tmComputeMapping(0., 0., 0.) != TM_E_OK) |
| 641 |
< |
return(0); |
| 642 |
< |
clralphas(); /* restart value list */ |
| 643 |
< |
rV.drl = rV.bl; /* need to redraw */ |
| 644 |
< |
} |
| 645 |
< |
if (tmMapPixels(rV.rgb+aorg, rV.brt+aorg, |
| 646 |
< |
rV.chr+aorg, alen) != TM_E_OK) |
| 647 |
< |
return(0); |
| 648 |
< |
if (blen > 0) |
| 649 |
< |
tmMapPixels(rV.rgb+borg, rV.brt+borg, |
| 650 |
< |
rV.chr+borg, blen); |
| 651 |
< |
setalphas(aorg, alen); /* compute add'l alpha values */ |
| 652 |
< |
if (blen > 0) |
| 653 |
< |
setalphas(borg, blen); |
| 654 |
< |
rV.tml = rV.tl; /* we're all up to date */ |
| 655 |
< |
return(1); |
| 458 |
> |
glMatrixMode(GL_MODELVIEW); |
| 459 |
> |
glPopMatrix(); |
| 460 |
> |
setstereobuf(STEREO_BUFFER_LEFT); |
| 461 |
|
} |
| 462 |
+ |
#endif |
| 463 |
|
|
| 464 |
|
|
| 465 |
|
static int |
| 466 |
< |
Compost(pct) /* free up some values */ |
| 661 |
< |
int pct; |
| 466 |
> |
mytmflags() /* figure out tone mapping flags */ |
| 467 |
|
{ |
| 468 |
< |
int nused, nclear, nmapped, ndrawn; |
| 469 |
< |
/* figure out how many values to clear */ |
| 470 |
< |
nclear = rV.nl * pct / 100; |
| 471 |
< |
nused = rV.tl - rV.bl; |
| 472 |
< |
if (nused <= 0) nused += rV.nl; |
| 473 |
< |
nclear -= rV.nl - nused; |
| 474 |
< |
if (nclear <= 0) |
| 475 |
< |
return(0); |
| 476 |
< |
if (nclear >= nused) { /* clear them all? */ |
| 477 |
< |
rV.drl = rV.tml = rV.bl = rV.tl = 0; |
| 478 |
< |
return(nused); |
| 479 |
< |
} |
| 675 |
< |
/* else clear values from bottom */ |
| 676 |
< |
ndrawn = rV.drl - rV.bl; |
| 677 |
< |
if (ndrawn < 0) ndrawn += rV.nl; |
| 678 |
< |
nmapped = rV.tml - rV.bl; |
| 679 |
< |
if (nmapped < 0) nmapped += rV.nl; |
| 680 |
< |
rV.bl += nclear; |
| 681 |
< |
if (rV.bl >= rV.nl) rV.bl -= rV.nl; |
| 682 |
< |
if (ndrawn < nclear) rV.drl = rV.bl; |
| 683 |
< |
if (nmapped < nclear) rV.tml = rV.bl; |
| 684 |
< |
return(nclear); |
| 468 |
> |
extern char *progname; |
| 469 |
> |
register char *cp, *tail; |
| 470 |
> |
/* find basic name */ |
| 471 |
> |
for (cp = tail = progname; *cp; cp++) |
| 472 |
> |
if (*cp == '/') |
| 473 |
> |
tail = cp+1; |
| 474 |
> |
for (cp = tail; *cp && *cp != '.'; cp++) |
| 475 |
> |
; |
| 476 |
> |
if (cp > tail && cp[-1] == 'h') |
| 477 |
> |
return(TM_F_HUMAN|TM_F_NOSTDERR); |
| 478 |
> |
else |
| 479 |
> |
return(TM_F_CAMERA|TM_F_NOSTDERR); |
| 480 |
|
} |
| 481 |
|
|
| 482 |
|
|
| 501 |
|
getkey(levptr(XKeyPressedEvent)); |
| 502 |
|
break; |
| 503 |
|
case ButtonPress: |
| 504 |
< |
getmove(levptr(XButtonPressedEvent)); |
| 504 |
> |
if (FRAMESTATE(levptr(XButtonPressedEvent)->state)) |
| 505 |
> |
getframe(levptr(XButtonPressedEvent)); |
| 506 |
> |
else |
| 507 |
> |
getmove(levptr(XButtonPressedEvent)); |
| 508 |
|
break; |
| 509 |
|
} |
| 510 |
|
} |
| 520 |
|
|
| 521 |
|
|
| 522 |
|
static |
| 523 |
< |
draw_grids() /* draw holodeck section grids */ |
| 523 |
> |
draw_grids(fore) /* draw holodeck section grids */ |
| 524 |
> |
int fore; |
| 525 |
|
{ |
| 526 |
< |
static BYTE gridrgba[4] = {0x0, 0xff, 0xff, 0x00}; |
| 527 |
< |
|
| 528 |
< |
if (!mapped) |
| 529 |
< |
return; |
| 530 |
< |
glColor4ub(gridrgba[0], gridrgba[1], gridrgba[2], gridrgba[3]); |
| 732 |
< |
/* draw each grid line */ |
| 733 |
< |
glBegin(GL_LINES); |
| 526 |
> |
if (fore) |
| 527 |
> |
glColor4ub(0, 255, 255, 0); |
| 528 |
> |
else |
| 529 |
> |
glColor4ub(0, 0, 0, 0); |
| 530 |
> |
glBegin(GL_LINES); /* draw each grid line */ |
| 531 |
|
gridlines(draw3dline); |
| 532 |
|
glEnd(); |
| 533 |
+ |
checkglerr("drawing grid lines"); |
| 534 |
|
} |
| 535 |
|
|
| 536 |
|
|
| 739 |
– |
static int |
| 740 |
– |
IndexValue(rgba) /* locate a pixel by it's framebuffer value */ |
| 741 |
– |
register BYTE rgba[4]; |
| 742 |
– |
{ |
| 743 |
– |
register int *vp; |
| 744 |
– |
/* check legality */ |
| 745 |
– |
if (rgba[3] == 0 || rgba[3] == 255) |
| 746 |
– |
return(-1); |
| 747 |
– |
/* borrow a value slot */ |
| 748 |
– |
rV.rgb[rV.tl][0] = rgba[0]; |
| 749 |
– |
rV.rgb[rV.tl][1] = rgba[1]; |
| 750 |
– |
rV.rgb[rV.tl][2] = rgba[2]; |
| 751 |
– |
rV.alpha[rV.tl] = rgba[3]; |
| 752 |
– |
/* find it */ |
| 753 |
– |
vp = (int *)bsearch((char *)&rV.tl, (char *)valmap, vmaplen, |
| 754 |
– |
sizeof(int), valcmp); |
| 755 |
– |
if (vp == NULL) |
| 756 |
– |
return(-1); |
| 757 |
– |
return(*vp); |
| 758 |
– |
} |
| 759 |
– |
|
| 760 |
– |
|
| 761 |
– |
static int |
| 762 |
– |
FindValue(dx, dy) /* find a value on the display */ |
| 763 |
– |
int dx, dy; |
| 764 |
– |
{ |
| 765 |
– |
BYTE rgba[4]; |
| 766 |
– |
|
| 767 |
– |
if (dx < 0 || dy < 0 || dx >= odev.hres || dy >= odev.vres) |
| 768 |
– |
return(-1); |
| 769 |
– |
glReadPixels(dx, dy, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, rgba); |
| 770 |
– |
return(IndexValue(rgba)); |
| 771 |
– |
} |
| 772 |
– |
|
| 773 |
– |
|
| 537 |
|
static |
| 538 |
|
moveview(dx, dy, mov, orb) /* move our view */ |
| 539 |
|
int dx, dy, mov, orb; |
| 540 |
|
{ |
| 541 |
|
VIEW nv; |
| 542 |
< |
FVECT odir, v1; |
| 542 |
> |
FVECT odir, v1, wip; |
| 543 |
|
double d; |
| 544 |
|
register int li; |
| 545 |
|
/* start with old view */ |
| 546 |
|
copystruct(&nv, &odev.v); |
| 547 |
< |
/* change view direction */ |
| 548 |
< |
if (mov | orb) { |
| 549 |
< |
if ((li = FindValue(dx, dy)) < 0) |
| 547 |
> |
/* orient our motion */ |
| 548 |
> |
if (viewray(v1, odir, &odev.v, |
| 549 |
> |
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY) |
| 550 |
> |
return(0); /* outside view */ |
| 551 |
> |
if (mov | orb) { /* moving relative to geometry */ |
| 552 |
> |
#ifdef DOBJ |
| 553 |
> |
d = dobj_trace(NULL, v1, odir); /* check objects */ |
| 554 |
> |
/* check holodeck */ |
| 555 |
> |
if ((li = smFindSamp(v1, odir)) >= 0) { |
| 556 |
> |
VCOPY(wip, rsL.wp[li]); |
| 557 |
> |
if (d < .99*FHUGE && d*d <= dist2(v1, wip)) |
| 558 |
> |
li = -1; /* object is closer */ |
| 559 |
> |
} else if (d >= .99*FHUGE) |
| 560 |
> |
return(0); /* nothing visible */ |
| 561 |
> |
if (li < 0) |
| 562 |
> |
VSUM(wip, v1, odir, d); /* else get object point */ |
| 563 |
> |
#else |
| 564 |
> |
if ((li = smFindSamp(v1, odir)) < 0) |
| 565 |
|
return(0); /* not on window */ |
| 566 |
< |
VSUM(odir, rV.wp[li], nv.vp, -1.); |
| 567 |
< |
} else { |
| 568 |
< |
if (viewray(nv.vp, nv.vdir, &odev.v, |
| 569 |
< |
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY) |
| 570 |
< |
return(0); /* outside view */ |
| 571 |
< |
} |
| 566 |
> |
VCOPY(wip, rsL.wp[li]); |
| 567 |
> |
#endif |
| 568 |
> |
#ifdef DEBUG |
| 569 |
> |
fprintf(stderr, "moveview: hit %s at (%f,%f,%f) (t=%f)\n", |
| 570 |
> |
li < 0 ? "object" : "mesh", |
| 571 |
> |
wip[0], wip[1], wip[2], |
| 572 |
> |
(wip[0]-odev.v.vp[0])*odir[0] + |
| 573 |
> |
(wip[1]-odev.v.vp[1])*odir[1] + |
| 574 |
> |
(wip[2]-odev.v.vp[2])*odir[2]); |
| 575 |
> |
#endif |
| 576 |
> |
VSUM(odir, wip, odev.v.vp, -1.); |
| 577 |
> |
} else /* panning with constant viewpoint */ |
| 578 |
> |
VCOPY(nv.vdir, odir); |
| 579 |
|
if (orb && mov) { /* orbit left/right */ |
| 580 |
|
spinvector(odir, odir, nv.vup, d=MOVDEG*PI/180.*mov); |
| 581 |
< |
VSUM(nv.vp, rV.wp[li], odir, -1.); |
| 581 |
> |
VSUM(nv.vp, wip, odir, -1.); |
| 582 |
|
spinvector(nv.vdir, nv.vdir, nv.vup, d); |
| 583 |
|
} else if (orb) { /* orbit up/down */ |
| 584 |
|
fcross(v1, odir, nv.vup); |
| 585 |
|
if (normalize(v1) == 0.) |
| 586 |
|
return(0); |
| 587 |
|
spinvector(odir, odir, v1, d=MOVDEG*PI/180.*orb); |
| 588 |
< |
VSUM(nv.vp, rV.wp[li], odir, -1.); |
| 588 |
> |
VSUM(nv.vp, wip, odir, -1.); |
| 589 |
|
spinvector(nv.vdir, nv.vdir, v1, d); |
| 590 |
|
} else if (mov) { /* move forward/backward */ |
| 591 |
|
d = MOVPCT/100. * mov; |
| 593 |
|
} |
| 594 |
|
if (!mov ^ !orb && headlocked) { /* restore head height */ |
| 595 |
|
VSUM(v1, odev.v.vp, nv.vp, -1.); |
| 596 |
< |
d = DOT(v1, odev.v.vup); |
| 596 |
> |
d = DOT(v1, nv.vup); |
| 597 |
|
VSUM(nv.vp, nv.vp, odev.v.vup, d); |
| 598 |
|
} |
| 599 |
|
if (setview(&nv) != NULL) |
| 605 |
|
|
| 606 |
|
|
| 607 |
|
static |
| 608 |
+ |
getframe(ebut) /* get focus frame */ |
| 609 |
+ |
XButtonPressedEvent *ebut; |
| 610 |
+ |
{ |
| 611 |
+ |
int startx = ebut->x, starty = ebut->y; |
| 612 |
+ |
int endx, endy; |
| 613 |
+ |
|
| 614 |
+ |
XMaskEvent(ourdisplay, ButtonReleaseMask, levptr(XEvent)); |
| 615 |
+ |
endx = levptr(XButtonReleasedEvent)->x; |
| 616 |
+ |
endy = levptr(XButtonReleasedEvent)->y; |
| 617 |
+ |
if (endx == startx | endy == starty) { |
| 618 |
+ |
XBell(ourdisplay, 0); |
| 619 |
+ |
return; |
| 620 |
+ |
} |
| 621 |
+ |
if (endx < startx) {register int c = endx; endx = startx; startx = c;} |
| 622 |
+ |
if (endy < starty) {register int c = endy; endy = starty; starty = c;} |
| 623 |
+ |
sprintf(odev_args, "%.3f %.3f %.3f %.3f", |
| 624 |
+ |
(startx+.5)/odev.hres, 1.-(endy+.5)/odev.vres, |
| 625 |
+ |
(endx+.5)/odev.hres, 1.-(starty+.5)/odev.vres); |
| 626 |
+ |
inpresflags |= DFL(DC_FOCUS); |
| 627 |
+ |
} |
| 628 |
+ |
|
| 629 |
+ |
|
| 630 |
+ |
static |
| 631 |
|
getmove(ebut) /* get view change */ |
| 632 |
|
XButtonPressedEvent *ebut; |
| 633 |
|
{ |
| 634 |
|
int movdir = MOVDIR(ebut->button); |
| 635 |
|
int movorb = MOVORB(ebut->state); |
| 636 |
+ |
int qlevel = 99; |
| 637 |
+ |
time_t lasttime, thistime; |
| 638 |
+ |
int nframes; |
| 639 |
|
Window rootw, childw; |
| 640 |
|
int rootx, rooty, wx, wy; |
| 641 |
|
unsigned int statemask; |
| 642 |
|
|
| 643 |
< |
quicken = 1; /* accelerate update rate */ |
| 833 |
< |
XNoOp(ourdisplay); |
| 643 |
> |
XNoOp(ourdisplay); /* makes sure we're not idle */ |
| 644 |
|
|
| 645 |
+ |
lasttime = time(0); nframes = 0; |
| 646 |
|
while (!XCheckMaskEvent(ourdisplay, |
| 647 |
|
ButtonReleaseMask, levptr(XEvent))) { |
| 648 |
< |
|
| 648 |
> |
/* get cursor position */ |
| 649 |
|
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
| 650 |
|
&rootx, &rooty, &wx, &wy, &statemask)) |
| 651 |
|
break; /* on another screen */ |
| 652 |
|
|
| 653 |
+ |
draw_grids(0); /* clear old grid lines */ |
| 654 |
+ |
#ifdef STEREO |
| 655 |
+ |
pushright(); draw_grids(0); popright(); |
| 656 |
+ |
#endif |
| 657 |
+ |
/* compute view motion */ |
| 658 |
|
if (!moveview(wx, odev.vres-1-wy, movdir, movorb)) { |
| 659 |
|
sleep(1); |
| 660 |
< |
continue; |
| 660 |
> |
lasttime++; |
| 661 |
> |
continue; /* cursor in bad place */ |
| 662 |
|
} |
| 663 |
< |
draw_grids(); |
| 664 |
< |
dev_flush(); |
| 663 |
> |
draw_grids(1); /* redraw grid */ |
| 664 |
> |
#ifdef STEREO |
| 665 |
> |
pushright(); |
| 666 |
> |
draw_grids(1); |
| 667 |
> |
smUpdate(&vwright, qlevel); |
| 668 |
> |
#ifdef DOBJ |
| 669 |
> |
dobj_render(); |
| 670 |
> |
#endif |
| 671 |
> |
popright(); |
| 672 |
> |
#endif |
| 673 |
> |
/* redraw mesh */ |
| 674 |
> |
smUpdate(&odev.v, qlevel); |
| 675 |
> |
#ifdef DOBJ |
| 676 |
> |
dobj_render(); /* redraw object */ |
| 677 |
> |
#endif |
| 678 |
> |
glFlush(); |
| 679 |
> |
nframes++; /* figure out good quality level */ |
| 680 |
> |
thistime = time(0); |
| 681 |
> |
if (thistime - lasttime >= 3 || |
| 682 |
> |
nframes > (int)(3*3*TARGETFPS)) { |
| 683 |
> |
qlevel = thistime<=lasttime ? 1000 : |
| 684 |
> |
(int)((double)nframes/(thistime-lasttime) |
| 685 |
> |
/ TARGETFPS * qlevel + 0.5); |
| 686 |
> |
lasttime = thistime; nframes = 0; |
| 687 |
> |
if (qlevel > 99) { |
| 688 |
> |
if (qlevel > 300) { /* put on the brakes */ |
| 689 |
> |
sleep(1); |
| 690 |
> |
lasttime++; |
| 691 |
> |
} |
| 692 |
> |
qlevel = 99; |
| 693 |
> |
} else if (qlevel < 1) |
| 694 |
> |
qlevel = 1; |
| 695 |
> |
} |
| 696 |
|
} |
| 697 |
|
if (!(inpresflags & DFL(DC_SETVIEW))) { /* do final motion */ |
| 698 |
|
movdir = MOVDIR(levptr(XButtonReleasedEvent)->button); |
| 699 |
|
wx = levptr(XButtonReleasedEvent)->x; |
| 700 |
|
wy = levptr(XButtonReleasedEvent)->y; |
| 701 |
|
moveview(wx, odev.vres-1-wy, movdir, movorb); |
| 702 |
+ |
} |
| 703 |
+ |
} |
| 704 |
+ |
|
| 705 |
+ |
|
| 706 |
+ |
static |
| 707 |
+ |
setglpersp(vp) /* set perspective view in GL */ |
| 708 |
+ |
register VIEW *vp; |
| 709 |
+ |
{ |
| 710 |
+ |
double d, xmin, xmax, ymin, ymax; |
| 711 |
+ |
|
| 712 |
+ |
if (mindpth >= maxdpth) { |
| 713 |
+ |
dev_zmin = 1.; |
| 714 |
+ |
dev_zmax = 100.; |
| 715 |
|
} else { |
| 716 |
< |
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
| 717 |
< |
redraw(); |
| 716 |
> |
dev_zmin = 0.5*mindpth; |
| 717 |
> |
dev_zmax = 5.0*maxdpth; |
| 718 |
|
} |
| 719 |
< |
quicken = 0; |
| 720 |
< |
dev_flush(); |
| 719 |
> |
if (odev.v.vfore > FTINY) |
| 720 |
> |
dev_zmin = odev.v.vfore; |
| 721 |
> |
if (odev.v.vaft > FTINY) |
| 722 |
> |
dev_zmax = odev.v.vaft; |
| 723 |
> |
if (dev_zmin < dev_zmax/100.) |
| 724 |
> |
dev_zmin = dev_zmax/100.; |
| 725 |
> |
xmax = dev_zmin * tan(PI/180./2. * odev.v.horiz); |
| 726 |
> |
xmin = -xmax; |
| 727 |
> |
d = odev.v.hoff * (xmax - xmin); |
| 728 |
> |
xmin += d; xmax += d; |
| 729 |
> |
ymax = dev_zmin * tan(PI/180./2. * odev.v.vert); |
| 730 |
> |
ymin = -ymax; |
| 731 |
> |
d = odev.v.voff * (ymax - ymin); |
| 732 |
> |
ymin += d; ymax += d; |
| 733 |
> |
/* set view matrix */ |
| 734 |
> |
glMatrixMode(GL_PROJECTION); |
| 735 |
> |
glLoadIdentity(); |
| 736 |
> |
glFrustum(xmin, xmax, ymin, ymax, dev_zmin, dev_zmax); |
| 737 |
> |
gluLookAt(odev.v.vp[0], odev.v.vp[1], odev.v.vp[2], |
| 738 |
> |
odev.v.vp[0] + odev.v.vdir[0], |
| 739 |
> |
odev.v.vp[1] + odev.v.vdir[1], |
| 740 |
> |
odev.v.vp[2] + odev.v.vdir[2], |
| 741 |
> |
odev.v.vup[0], odev.v.vup[1], odev.v.vup[2]); |
| 742 |
> |
checkglerr("setting perspective view"); |
| 743 |
|
} |
| 744 |
|
|
| 745 |
|
|
| 746 |
|
static |
| 747 |
+ |
wipeclean() /* prepare for redraw */ |
| 748 |
+ |
{ |
| 749 |
+ |
/* clear depth buffer */ |
| 750 |
+ |
#ifdef STEREO |
| 751 |
+ |
setstereobuf(STEREO_BUFFER_RIGHT); |
| 752 |
+ |
glClear(GL_DEPTH_BUFFER_BIT); |
| 753 |
+ |
setstereobuf(STEREO_BUFFER_LEFT); |
| 754 |
+ |
#endif |
| 755 |
+ |
glClear(GL_DEPTH_BUFFER_BIT); |
| 756 |
+ |
smClean(); /* reset drawing routines */ |
| 757 |
+ |
setglpersp(&odev.v); /* reset view & clipping planes */ |
| 758 |
+ |
} |
| 759 |
+ |
|
| 760 |
+ |
|
| 761 |
+ |
static |
| 762 |
|
getkey(ekey) /* get input key */ |
| 763 |
|
register XKeyPressedEvent *ekey; |
| 764 |
|
{ |
| 765 |
+ |
Window rootw, childw; |
| 766 |
+ |
int rootx, rooty, wx, wy; |
| 767 |
+ |
unsigned int statemask; |
| 768 |
|
int n; |
| 769 |
|
char buf[8]; |
| 770 |
|
|
| 787 |
|
case 'v': /* spit out view */ |
| 788 |
|
inpresflags |= DFL(DC_GETVIEW); |
| 789 |
|
return; |
| 790 |
+ |
case 'f': /* frame view position */ |
| 791 |
+ |
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
| 792 |
+ |
&rootx, &rooty, &wx, &wy, &statemask)) |
| 793 |
+ |
return; /* on another screen */ |
| 794 |
+ |
sprintf(odev_args, "%.4f %.4f", (wx+.5)/odev.hres, |
| 795 |
+ |
1.-(wy+.5)/odev.vres); |
| 796 |
+ |
inpresflags |= DFL(DC_FOCUS); |
| 797 |
+ |
return; |
| 798 |
+ |
case 'F': /* unfocus */ |
| 799 |
+ |
odev_args[0] = '\0'; |
| 800 |
+ |
inpresflags |= DFL(DC_FOCUS); |
| 801 |
+ |
return; |
| 802 |
|
case '\n': |
| 803 |
|
case '\r': /* resume computation */ |
| 804 |
|
inpresflags |= DFL(DC_RESUME); |
| 805 |
|
return; |
| 806 |
|
case CTRL('R'): /* redraw screen */ |
| 807 |
< |
TMapValues(1); |
| 895 |
< |
glClear(GL_DEPTH_BUFFER_BIT); |
| 896 |
< |
redraw(); |
| 807 |
> |
wipeclean(); |
| 808 |
|
return; |
| 809 |
|
case CTRL('L'): /* refresh from server */ |
| 810 |
|
if (inpresflags & DFL(DC_REDRAW)) |
| 811 |
|
return; |
| 812 |
+ |
setglpersp(&odev.v); /* reset clipping planes */ |
| 813 |
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
| 814 |
< |
glDisable(GL_DEPTH_TEST); |
| 815 |
< |
draw_grids(); |
| 814 |
> |
glDisable(GL_DEPTH_TEST); /* so grids will clear */ |
| 815 |
> |
draw_grids(1); |
| 816 |
> |
#ifdef STEREO |
| 817 |
> |
pushright(); |
| 818 |
> |
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
| 819 |
> |
draw_grids(1); |
| 820 |
> |
popright(); |
| 821 |
> |
#endif |
| 822 |
|
glEnable(GL_DEPTH_TEST); |
| 823 |
|
glFlush(); |
| 824 |
< |
Compost(100); /* get rid of old values */ |
| 824 |
> |
smInit(rsL.max_samp); /* get rid of old values */ |
| 825 |
|
inpresflags |= DFL(DC_REDRAW); /* resend values from server */ |
| 826 |
+ |
rayqleft = 0; /* hold off update */ |
| 827 |
|
return; |
| 828 |
|
case 'K': /* kill rtrace process(es) */ |
| 829 |
|
inpresflags |= DFL(DC_KILL); |
| 848 |
|
fixwindow(eexp) /* repair damage to window */ |
| 849 |
|
register XExposeEvent *eexp; |
| 850 |
|
{ |
| 851 |
< |
if (odev.hres == 0 || odev.vres == 0) /* first exposure */ |
| 851 |
> |
if (odev.hres == 0 | odev.vres == 0) { /* first exposure */ |
| 852 |
|
resizewindow((XConfigureEvent *)eexp); |
| 853 |
< |
if (eexp->width == odev.hres && eexp->height == odev.vres) |
| 935 |
< |
TMapValues(1); |
| 936 |
< |
if (!eexp->count) { |
| 937 |
< |
glClear(GL_DEPTH_BUFFER_BIT); |
| 938 |
< |
redraw(); |
| 853 |
> |
return; |
| 854 |
|
} |
| 855 |
+ |
if (eexp->count) /* wait for final exposure */ |
| 856 |
+ |
return; |
| 857 |
+ |
wipeclean(); /* clear depth */ |
| 858 |
|
} |
| 859 |
|
|
| 860 |
|
|
| 862 |
|
resizewindow(ersz) /* resize window */ |
| 863 |
|
register XConfigureEvent *ersz; |
| 864 |
|
{ |
| 865 |
+ |
glViewport(0, 0, ersz->width, ersz->height); |
| 866 |
+ |
|
| 867 |
|
if (ersz->width == odev.hres && ersz->height == odev.vres) |
| 868 |
|
return; |
| 869 |
|
|
| 872 |
|
|
| 873 |
|
odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres); |
| 874 |
|
odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres); |
| 955 |
– |
|
| 956 |
– |
setGLview(); |
| 875 |
|
|
| 876 |
|
inpresflags |= DFL(DC_SETVIEW); |
| 877 |
|
} |
