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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 "rhd_qtree.h" |
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|
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#include <GL/glx.h> |
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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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#include "x11icon.h" |
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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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#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 FEQ |
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#define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY) |
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#endif |
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|
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#ifndef MAXCONE |
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#define MAXCONE 16 /* number of different cone sizes */ |
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#endif |
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#ifndef MAXVERT |
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#define MAXVERT 32 /* maximum number of cone vertices */ |
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#endif |
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#ifndef MINVERT |
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#define MINVERT 4 /* minimum number of cone vertices */ |
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#endif |
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#ifndef DEPTHFACT |
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#define DEPTHFACT 16. /* multiplier for depth tests */ |
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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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|
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|
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#define BORWIDTH 5 /* border width */ |
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|
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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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|
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static double pwidth, pheight; /* pixel dimensions (mm) */ |
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|
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static double curzmax = 1e4; /* current depth upper limit */ |
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static double nxtzmax = 0.; /* maximum (finite) depth so far */ |
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static double mindpth, maxdpth; /* min. and max. depth */ |
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|
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static struct { |
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double rad; /* cone radius */ |
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int nverts; /* number of vertices */ |
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FVECT *va; /* allocated vertex array */ |
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} cone[MAXCONE]; /* precomputed cones for drawing */ |
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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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|
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static int headlocked = 0; /* lock vertical motion */ |
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|
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static int resizewindow(), getevent(), getkey(), moveview(), |
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initcones(), freecones(), |
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getmove(), fixwindow(), mytmflags(); |
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static int resizewindow(), getevent(), getkey(), moveview(), wipeclean(), |
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setglpersp(), getframe(), getmove(), fixwindow(), mytmflags(); |
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|
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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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dev_open(id) /* initialize X11 driver */ |
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extern time_t time(); |
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|
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|
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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_DEPTH_SIZE,15, None}; |
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char *gv; |
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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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/* set quadtree globals */ |
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qtMinNodesiz = 3; |
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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 |
162 |
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|| (gv = getenv("DISPLAY_GAMMA")) != NULL) |
163 |
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gamval = atof(gv); |
164 |
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if (tmInit(mytmflags(), stdprims, gamval) == NULL) |
161 |
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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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glMatrixMode(GL_PROJECTION); |
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glOrtho(0., 1., 0., 1., -.01, 1.01); |
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glTranslated(0., 0., -1.01); |
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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); |
222 |
+ |
#ifdef STEREO |
223 |
+ |
pheight *= 2.; |
224 |
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setstereobuf(STEREO_BUFFER_LEFT); |
225 |
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#endif |
226 |
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checkglerr("setting rendering parameters"); |
227 |
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copystruct(&odev.v, &stdview); |
228 |
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odev.v.type = VT_PER; |
229 |
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/* map the window */ |
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XMapWindow(ourdisplay, gwind); |
231 |
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dev_input(); /* sets size and view angles */ |
232 |
< |
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
233 |
< |
/* allocate our leaf pile */ |
234 |
< |
if (!qtAllocLeaves(2 * DisplayWidth(ourdisplay,ourscreen) * |
167 |
< |
DisplayHeight(ourdisplay,ourscreen) / |
168 |
< |
(qtMinNodesiz*qtMinNodesiz))) |
232 |
> |
/* allocate our samples */ |
233 |
> |
if (!smInit(DisplayWidth(ourdisplay,ourscreen) * |
234 |
> |
DisplayHeight(ourdisplay,ourscreen) / 10)) |
235 |
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error(SYSTEM, "insufficient memory for value storage"); |
236 |
+ |
mindpth = FHUGE; maxdpth = FTINY; |
237 |
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odev.name = id; |
238 |
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odev.ifd = ConnectionNumber(ourdisplay); |
172 |
– |
/* initialize cone array */ |
173 |
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initcones(); |
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} |
240 |
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|
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|
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dev_close() /* close our display and free resources */ |
243 |
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{ |
244 |
+ |
smInit(0); |
245 |
+ |
#ifdef DOBJ |
246 |
+ |
dobj_cleanup(); |
247 |
+ |
#endif |
248 |
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glXMakeCurrent(ourdisplay, None, NULL); |
249 |
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glXDestroyContext(ourdisplay, gctx); |
250 |
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XDestroyWindow(ourdisplay, gwind); |
251 |
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gwind = 0; |
252 |
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XCloseDisplay(ourdisplay); |
253 |
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ourdisplay = NULL; |
185 |
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qtFreeLeaves(); |
254 |
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tmDone(NULL); |
187 |
– |
freecones(); |
255 |
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odev.v.type = 0; |
256 |
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odev.hres = odev.vres = 0; |
257 |
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odev.ifd = -1; |
258 |
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} |
259 |
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|
260 |
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|
261 |
+ |
dev_clear() /* clear our representation */ |
262 |
+ |
{ |
263 |
+ |
smInit(rsL.max_samp); |
264 |
+ |
wipeclean(); |
265 |
+ |
rayqleft = 0; /* hold off update */ |
266 |
+ |
} |
267 |
+ |
|
268 |
+ |
|
269 |
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int |
270 |
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dev_view(nv) /* assign new driver view */ |
271 |
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register VIEW *nv; |
272 |
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{ |
273 |
< |
if (nv->type == VT_PAR || /* check view legality */ |
273 |
> |
double d; |
274 |
> |
|
275 |
> |
if (nv->type != VT_PER || /* check view legality */ |
276 |
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nv->horiz > 160. || nv->vert > 160.) { |
277 |
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error(COMMAND, "illegal view type/angle"); |
278 |
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nv->type = odev.v.type; |
280 |
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nv->vert = odev.v.vert; |
281 |
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return(0); |
282 |
|
} |
206 |
– |
if (nv->vfore > FTINY) { |
207 |
– |
error(COMMAND, "cannot handle fore clipping"); |
208 |
– |
nv->vfore = 0.; |
209 |
– |
return(0); |
210 |
– |
} |
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 |
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int dw = DisplayWidth(ourdisplay,ourscreen); |
288 |
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int dh = DisplayHeight(ourdisplay,ourscreen); |
289 |
|
|
290 |
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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 |
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XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres); |
308 |
|
dev_input(); /* get resize event */ |
309 |
|
} |
310 |
< |
copystruct(&odev.v, nv); |
310 |
> |
copystruct(&odev.v, nv); /* setview() already called */ |
311 |
> |
#ifdef STEREO |
312 |
> |
copystruct(&vwright, nv); |
313 |
> |
d = eyesepdist / sqrt(nv->hn2); |
314 |
> |
VSUM(vwright.vp, nv->vp, nv->hvec, d); |
315 |
> |
/* setview(&vwright); -- Unnecessary */ |
316 |
> |
#endif |
317 |
|
} |
318 |
< |
if (nxtzmax > FTINY) { |
237 |
< |
curzmax = nxtzmax; |
238 |
< |
nxtzmax = 0.; |
239 |
< |
} |
240 |
< |
glClear(GL_DEPTH_BUFFER_BIT); |
241 |
< |
qtReplant(); |
318 |
> |
wipeclean(); |
319 |
|
return(1); |
320 |
|
} |
321 |
|
|
322 |
|
|
323 |
+ |
dev_auxcom(cmd, args) /* process an auxiliary command */ |
324 |
+ |
char *cmd, *args; |
325 |
+ |
{ |
326 |
+ |
#ifdef DOBJ |
327 |
+ |
if (dobj_command(cmd, args) >= 0) |
328 |
+ |
return; |
329 |
+ |
#endif |
330 |
+ |
sprintf(errmsg, "%s: unknown command", cmd); |
331 |
+ |
error(COMMAND, errmsg); |
332 |
+ |
} |
333 |
+ |
|
334 |
+ |
|
335 |
+ |
VIEW * |
336 |
+ |
dev_auxview(n, hvres) /* return nth auxiliary view */ |
337 |
+ |
int n; |
338 |
+ |
int hvres[2]; |
339 |
+ |
{ |
340 |
+ |
hvres[0] = odev.hres; hvres[1] = odev.vres; |
341 |
+ |
if (n == 0) |
342 |
+ |
return(&odev.v); |
343 |
+ |
#ifdef STEREO |
344 |
+ |
if (n == 1) |
345 |
+ |
return(&vwright); |
346 |
+ |
#endif |
347 |
+ |
return(NULL); |
348 |
+ |
} |
349 |
+ |
|
350 |
+ |
|
351 |
|
int |
352 |
|
dev_input() /* get X11 input */ |
353 |
|
{ |
356 |
|
do |
357 |
|
getevent(); |
358 |
|
|
359 |
< |
while (XQLength(ourdisplay) > 0); |
359 |
> |
while (XPending(ourdisplay) > 0); |
360 |
|
|
361 |
+ |
odev.inpready = 0; |
362 |
+ |
|
363 |
|
return(inpresflags); |
364 |
|
} |
365 |
|
|
366 |
|
|
367 |
+ |
dev_value(c, d, p) /* add a pixel value to our mesh */ |
368 |
+ |
COLR c; |
369 |
+ |
FVECT d, p; |
370 |
+ |
{ |
371 |
+ |
double depth; |
372 |
+ |
#ifdef DOBJ |
373 |
+ |
if (dobj_lightsamp != NULL) { /* in light source sampling */ |
374 |
+ |
(*dobj_lightsamp)(c, d, p); |
375 |
+ |
return; |
376 |
+ |
} |
377 |
+ |
#endif |
378 |
+ |
if (p != NULL) { /* add depth to our range */ |
379 |
+ |
depth = (p[0] - odev.v.vp[0])*d[0] + |
380 |
+ |
(p[1] - odev.v.vp[1])*d[1] + |
381 |
+ |
(p[2] - odev.v.vp[2])*d[2]; |
382 |
+ |
if (depth > FTINY) { |
383 |
+ |
if (depth < mindpth) |
384 |
+ |
mindpth = depth; |
385 |
+ |
if (depth > maxdpth) |
386 |
+ |
maxdpth = depth; |
387 |
+ |
} |
388 |
+ |
} |
389 |
+ |
smNewSamp(c, d, p); /* add to display representation */ |
390 |
+ |
if (!--rayqleft) |
391 |
+ |
dev_flush(); /* flush output */ |
392 |
+ |
} |
393 |
+ |
|
394 |
+ |
|
395 |
|
int |
396 |
|
dev_flush() /* flush output */ |
397 |
|
{ |
398 |
< |
qtUpdate(); |
399 |
< |
glFlush(); |
400 |
< |
return(XPending(ourdisplay)); |
398 |
> |
if (mapped) { |
399 |
> |
#ifdef STEREO |
400 |
> |
pushright(); /* update right eye */ |
401 |
> |
smUpdate(&vwright, 100); |
402 |
> |
#ifdef DOBJ |
403 |
> |
dobj_render(); /* usually in foreground */ |
404 |
> |
#endif |
405 |
> |
popright(); /* update left eye */ |
406 |
> |
#endif |
407 |
> |
smUpdate(&odev.v, 100); |
408 |
> |
checkglerr("rendering mesh"); |
409 |
> |
#ifdef DOBJ |
410 |
> |
dobj_render(); |
411 |
> |
#endif |
412 |
> |
glFlush(); /* flush OGL */ |
413 |
> |
} |
414 |
> |
rayqleft = RAYQLEN; |
415 |
> |
/* flush X11 and return # pending */ |
416 |
> |
return(odev.inpready = XPending(ourdisplay)); |
417 |
|
} |
418 |
|
|
419 |
|
|
420 |
< |
dev_cone(rgb, ip, rad) /* render a cone in view coordinates */ |
421 |
< |
BYTE rgb[3]; |
271 |
< |
FVECT ip; |
272 |
< |
double rad; |
420 |
> |
checkglerr(where) /* check for GL or GLU error */ |
421 |
> |
char *where; |
422 |
|
{ |
423 |
< |
register int ci, j; |
424 |
< |
double apexh, basez; |
425 |
< |
/* compute apex height (0. to 1.) */ |
426 |
< |
if (ip[2] > 1e6) |
427 |
< |
apexh = 1. - 1./DEPTHFACT; |
428 |
< |
else { |
280 |
< |
if (ip[2] > nxtzmax) |
281 |
< |
nxtzmax = ip[2]; |
282 |
< |
if (ip[2] >= curzmax) |
283 |
< |
apexh = 1. - 1./DEPTHFACT; |
284 |
< |
else |
285 |
< |
apexh = 1. - ip[2]/(curzmax*DEPTHFACT); |
423 |
> |
register GLenum errcode; |
424 |
> |
|
425 |
> |
while ((errcode = glGetError()) != GL_NO_ERROR) { |
426 |
> |
sprintf(errmsg, "OpenGL error %s: %s", |
427 |
> |
where, gluErrorString(errcode)); |
428 |
> |
error(WARNING, errmsg); |
429 |
|
} |
287 |
– |
rad *= 1.25; /* find conservative cone match */ |
288 |
– |
for (ci = 0; ci < MAXCONE-1; ci++) |
289 |
– |
if (cone[ci].rad >= rad) |
290 |
– |
break; |
291 |
– |
/* draw it */ |
292 |
– |
glColor3ub(rgb[0], rgb[1], rgb[2]); |
293 |
– |
glBegin(GL_TRIANGLE_FAN); |
294 |
– |
glVertex3d(ip[0], ip[1], apexh); /* start with apex */ |
295 |
– |
basez = apexh*cone[ci].va[0][2]; /* base z's all the same */ |
296 |
– |
for (j = 0; j < cone[ci].nverts; j++) /* draw each face */ |
297 |
– |
glVertex3d(ip[0]+cone[ci].va[j][0], ip[1]+cone[ci].va[j][1], |
298 |
– |
basez); |
299 |
– |
/* connect last to first */ |
300 |
– |
glVertex3d(ip[0]+cone[ci].va[0][0], ip[1]+cone[ci].va[0][1], basez); |
301 |
– |
glEnd(); /* all done */ |
430 |
|
} |
431 |
|
|
432 |
|
|
433 |
+ |
#ifdef STEREO |
434 |
+ |
static |
435 |
+ |
pushright() /* push on right view */ |
436 |
+ |
{ |
437 |
+ |
double d; |
438 |
+ |
|
439 |
+ |
setstereobuf(STEREO_BUFFER_RIGHT); |
440 |
+ |
glMatrixMode(GL_MODELVIEW); |
441 |
+ |
glPushMatrix(); |
442 |
+ |
d = -eyesepdist / sqrt(odev.v.hn2); |
443 |
+ |
glTranslated(d*odev.v.hvec[0], d*odev.v.hvec[1], d*odev.v.hvec[2]); |
444 |
+ |
checkglerr("setting right view"); |
445 |
+ |
} |
446 |
+ |
|
447 |
+ |
|
448 |
+ |
static |
449 |
+ |
popright() /* pop off right view */ |
450 |
+ |
{ |
451 |
+ |
glMatrixMode(GL_MODELVIEW); |
452 |
+ |
glPopMatrix(); |
453 |
+ |
setstereobuf(STEREO_BUFFER_LEFT); |
454 |
+ |
} |
455 |
+ |
#endif |
456 |
+ |
|
457 |
+ |
|
458 |
|
static int |
459 |
|
mytmflags() /* figure out tone mapping flags */ |
460 |
|
{ |
466 |
|
tail = cp+1; |
467 |
|
for (cp = tail; *cp && *cp != '.'; cp++) |
468 |
|
; |
469 |
< |
if (cp-tail == 3 && !strncmp(tail, "glx", 3)) |
470 |
< |
return(TM_F_CAMERA); |
471 |
< |
if (cp-tail == 4 && !strncmp(tail, "glxh", 4)) |
472 |
< |
return(TM_F_HUMAN); |
320 |
< |
error(USER, "illegal driver name"); |
469 |
> |
if (cp > tail && cp[-1] == 'h') |
470 |
> |
return(TM_F_HUMAN|TM_F_NOSTDERR); |
471 |
> |
else |
472 |
> |
return(TM_F_CAMERA|TM_F_NOSTDERR); |
473 |
|
} |
474 |
|
|
475 |
|
|
476 |
|
static |
325 |
– |
initcones() /* initialize cone vertices */ |
326 |
– |
{ |
327 |
– |
register int i, j; |
328 |
– |
double minrad, d; |
329 |
– |
|
330 |
– |
if (cone[0].nverts) |
331 |
– |
freecones(); |
332 |
– |
minrad = 2.*qtMinNodesiz/(double)(DisplayWidth(ourdisplay,ourscreen) + |
333 |
– |
DisplayHeight(ourdisplay,ourscreen)); |
334 |
– |
for (i = 0; i < MAXCONE; i++) { |
335 |
– |
d = (double)i/(MAXCONE-1); d *= d; /* x^2 distribution */ |
336 |
– |
cone[i].rad = minrad + (1.-minrad)*d; |
337 |
– |
cone[i].nverts = MINVERT + (MAXVERT-MINVERT)*d; |
338 |
– |
cone[i].va = (FVECT *)malloc(cone[i].nverts*sizeof(FVECT)); |
339 |
– |
if (cone[i].va == NULL) |
340 |
– |
error(SYSTEM, "out of memory in initcones"); |
341 |
– |
for (j = cone[i].nverts; j--; ) { |
342 |
– |
d = 2.*PI * (j+.5) / (cone[i].nverts); |
343 |
– |
cone[i].va[j][0] = cos(d) * cone[i].rad; |
344 |
– |
cone[i].va[j][1] = sin(d) * cone[i].rad; |
345 |
– |
cone[i].va[j][2] = 1. - cone[i].rad; |
346 |
– |
} |
347 |
– |
} |
348 |
– |
} |
349 |
– |
|
350 |
– |
|
351 |
– |
static |
352 |
– |
freecones() /* free cone vertices */ |
353 |
– |
{ |
354 |
– |
register int i; |
355 |
– |
|
356 |
– |
for (i = MAXCONE; i--; ) |
357 |
– |
if (cone[i].nverts) { |
358 |
– |
free((char *)cone[i].va); |
359 |
– |
cone[i].va = NULL; |
360 |
– |
cone[i].nverts = 0; |
361 |
– |
} |
362 |
– |
} |
363 |
– |
|
364 |
– |
|
365 |
– |
static |
477 |
|
getevent() /* get next event */ |
478 |
|
{ |
479 |
|
XNextEvent(ourdisplay, levptr(XEvent)); |
494 |
|
getkey(levptr(XKeyPressedEvent)); |
495 |
|
break; |
496 |
|
case ButtonPress: |
497 |
< |
getmove(levptr(XButtonPressedEvent)); |
497 |
> |
if (FRAMESTATE(levptr(XButtonPressedEvent)->state)) |
498 |
> |
getframe(levptr(XButtonPressedEvent)); |
499 |
> |
else |
500 |
> |
getmove(levptr(XButtonPressedEvent)); |
501 |
|
break; |
502 |
|
} |
503 |
|
} |
513 |
|
|
514 |
|
|
515 |
|
static |
516 |
< |
draw_grids() /* draw holodeck section grids */ |
516 |
> |
draw_grids(fore) /* draw holodeck section grids */ |
517 |
> |
int fore; |
518 |
|
{ |
519 |
< |
static BYTE gridrgba[4] = {0x0, 0xff, 0xff, 0x00}; |
520 |
< |
double xmin, xmax, ymin, ymax, zmin, zmax; |
521 |
< |
double d, cx, sx, crad; |
522 |
< |
FVECT vx, vy; |
408 |
< |
register int i, j; |
409 |
< |
/* can we even do it? */ |
410 |
< |
if (!mapped || odev.v.type != VT_PER) |
411 |
< |
return; |
412 |
< |
/* compute view frustum */ |
413 |
< |
if (normalize(odev.v.vdir) == 0.0) |
414 |
< |
return; |
415 |
< |
zmin = 0.01; |
416 |
< |
zmax = 10000.; |
417 |
< |
if (odev.v.vfore > FTINY) |
418 |
< |
zmin = odev.v.vfore; |
419 |
< |
if (odev.v.vaft > FTINY) |
420 |
< |
zmax = odev.v.vaft; |
421 |
< |
xmax = zmin * tan(PI/180./2. * odev.v.horiz); |
422 |
< |
xmin = -xmax; |
423 |
< |
d = odev.v.hoff * (xmax - xmin); |
424 |
< |
xmin += d; xmax += d; |
425 |
< |
ymax = zmin * tan(PI/180./2. * odev.v.vert); |
426 |
< |
ymin = -ymax; |
427 |
< |
d = odev.v.voff * (ymax - ymin); |
428 |
< |
ymin += d; ymax += d; |
429 |
< |
/* set view matrix */ |
430 |
< |
glMatrixMode(GL_PROJECTION); |
431 |
< |
glPushMatrix(); |
432 |
< |
glLoadIdentity(); |
433 |
< |
glFrustum(xmin, xmax, ymin, ymax, zmin, zmax); |
434 |
< |
gluLookAt(odev.v.vp[0], odev.v.vp[1], odev.v.vp[2], |
435 |
< |
odev.v.vp[0] + odev.v.vdir[0], |
436 |
< |
odev.v.vp[1] + odev.v.vdir[1], |
437 |
< |
odev.v.vp[2] + odev.v.vdir[2], |
438 |
< |
odev.v.vup[0], odev.v.vup[1], odev.v.vup[2]); |
439 |
< |
glDisable(GL_DEPTH_TEST); /* write no depth values */ |
440 |
< |
glColor4ub(gridrgba[0], gridrgba[1], gridrgba[2], gridrgba[3]); |
519 |
> |
if (fore) |
520 |
> |
glColor4ub(0, 255, 255, 0); |
521 |
> |
else |
522 |
> |
glColor4ub(0, 0, 0, 0); |
523 |
|
glBegin(GL_LINES); /* draw each grid line */ |
524 |
|
gridlines(draw3dline); |
525 |
|
glEnd(); |
526 |
< |
glEnable(GL_DEPTH_TEST); /* restore rendering params */ |
445 |
< |
glPopMatrix(); |
526 |
> |
checkglerr("drawing grid lines"); |
527 |
|
} |
528 |
|
|
529 |
|
|
532 |
|
int dx, dy, mov, orb; |
533 |
|
{ |
534 |
|
VIEW nv; |
535 |
< |
FVECT odir, v1; |
535 |
> |
FVECT odir, v1, wip; |
536 |
|
double d; |
537 |
|
register int li; |
538 |
|
/* start with old view */ |
539 |
|
copystruct(&nv, &odev.v); |
540 |
< |
/* change view direction */ |
541 |
< |
if (mov | orb) { |
542 |
< |
if ((li = qtFindLeaf(dx, dy)) < 0) |
540 |
> |
/* orient our motion */ |
541 |
> |
if (viewray(v1, odir, &odev.v, |
542 |
> |
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY) |
543 |
> |
return(0); /* outside view */ |
544 |
> |
if (mov | orb) { /* moving relative to geometry */ |
545 |
> |
#ifdef DOBJ |
546 |
> |
d = dobj_trace(NULL, v1, odir); /* check objects */ |
547 |
> |
/* check holodeck */ |
548 |
> |
if ((li = smFindSamp(v1, odir)) >= 0) { |
549 |
> |
VCOPY(wip, rsL.wp[li]); |
550 |
> |
if (d < .99*FHUGE && d*d <= dist2(v1, wip)) |
551 |
> |
li = -1; /* object is closer */ |
552 |
> |
} else if (d >= .99*FHUGE) |
553 |
> |
return(0); /* nothing visible */ |
554 |
> |
if (li < 0) |
555 |
> |
VSUM(wip, v1, odir, d); /* else get object point */ |
556 |
> |
#else |
557 |
> |
if ((li = smFindSamp(v1, odir)) < 0) |
558 |
|
return(0); /* not on window */ |
559 |
< |
VSUM(odir, qtL.wp[li], nv.vp, -1.); |
560 |
< |
} else { |
561 |
< |
if (viewray(nv.vp, nv.vdir, &odev.v, |
562 |
< |
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY) |
563 |
< |
return(0); /* outside view */ |
564 |
< |
} |
559 |
> |
VCOPY(wip, rsL.wp[li]); |
560 |
> |
#endif |
561 |
> |
#ifdef DEBUG |
562 |
> |
fprintf(stderr, "moveview: hit %s at (%f,%f,%f) (t=%f)\n", |
563 |
> |
li < 0 ? "object" : "mesh", |
564 |
> |
wip[0], wip[1], wip[2], |
565 |
> |
(wip[0]-odev.v.vp[0])*odir[0] + |
566 |
> |
(wip[1]-odev.v.vp[1])*odir[1] + |
567 |
> |
(wip[2]-odev.v.vp[2])*odir[2]); |
568 |
> |
#endif |
569 |
> |
VSUM(odir, wip, odev.v.vp, -1.); |
570 |
> |
} else /* panning with constant viewpoint */ |
571 |
> |
VCOPY(nv.vdir, odir); |
572 |
|
if (orb && mov) { /* orbit left/right */ |
573 |
|
spinvector(odir, odir, nv.vup, d=MOVDEG*PI/180.*mov); |
574 |
< |
VSUM(nv.vp, qtL.wp[li], odir, -1.); |
574 |
> |
VSUM(nv.vp, wip, odir, -1.); |
575 |
|
spinvector(nv.vdir, nv.vdir, nv.vup, d); |
576 |
|
} else if (orb) { /* orbit up/down */ |
577 |
|
fcross(v1, odir, nv.vup); |
578 |
|
if (normalize(v1) == 0.) |
579 |
|
return(0); |
580 |
|
spinvector(odir, odir, v1, d=MOVDEG*PI/180.*orb); |
581 |
< |
VSUM(nv.vp, qtL.wp[li], odir, -1.); |
581 |
> |
VSUM(nv.vp, wip, odir, -1.); |
582 |
|
spinvector(nv.vdir, nv.vdir, v1, d); |
583 |
|
} else if (mov) { /* move forward/backward */ |
584 |
|
d = MOVPCT/100. * mov; |
586 |
|
} |
587 |
|
if (!mov ^ !orb && headlocked) { /* restore head height */ |
588 |
|
VSUM(v1, odev.v.vp, nv.vp, -1.); |
589 |
< |
d = DOT(v1, odev.v.vup); |
589 |
> |
d = DOT(v1, nv.vup); |
590 |
|
VSUM(nv.vp, nv.vp, odev.v.vup, d); |
591 |
|
} |
592 |
|
if (setview(&nv) != NULL) |
598 |
|
|
599 |
|
|
600 |
|
static |
601 |
+ |
getframe(ebut) /* get focus frame */ |
602 |
+ |
XButtonPressedEvent *ebut; |
603 |
+ |
{ |
604 |
+ |
int startx = ebut->x, starty = ebut->y; |
605 |
+ |
int endx, endy; |
606 |
+ |
|
607 |
+ |
XMaskEvent(ourdisplay, ButtonReleaseMask, levptr(XEvent)); |
608 |
+ |
endx = levptr(XButtonReleasedEvent)->x; |
609 |
+ |
endy = levptr(XButtonReleasedEvent)->y; |
610 |
+ |
if (endx == startx | endy == starty) { |
611 |
+ |
XBell(ourdisplay, 0); |
612 |
+ |
return; |
613 |
+ |
} |
614 |
+ |
if (endx < startx) {register int c = endx; endx = startx; startx = c;} |
615 |
+ |
if (endy < starty) {register int c = endy; endy = starty; starty = c;} |
616 |
+ |
sprintf(odev_args, "%.3f %.3f %.3f %.3f", |
617 |
+ |
(startx+.5)/odev.hres, 1.-(endy+.5)/odev.vres, |
618 |
+ |
(endx+.5)/odev.hres, 1.-(starty+.5)/odev.vres); |
619 |
+ |
inpresflags |= DFL(DC_FOCUS); |
620 |
+ |
} |
621 |
+ |
|
622 |
+ |
|
623 |
+ |
static |
624 |
|
getmove(ebut) /* get view change */ |
625 |
|
XButtonPressedEvent *ebut; |
626 |
|
{ |
627 |
|
int movdir = MOVDIR(ebut->button); |
628 |
|
int movorb = MOVORB(ebut->state); |
629 |
< |
int oldnodesiz = qtMinNodesiz; |
629 |
> |
int qlevel = 99; |
630 |
> |
time_t lasttime, thistime; |
631 |
> |
int nframes; |
632 |
|
Window rootw, childw; |
633 |
|
int rootx, rooty, wx, wy; |
634 |
|
unsigned int statemask; |
635 |
|
|
636 |
< |
qtMinNodesiz = 24; /* accelerate update rate */ |
509 |
< |
XNoOp(ourdisplay); |
636 |
> |
XNoOp(ourdisplay); /* makes sure we're not idle */ |
637 |
|
|
638 |
+ |
lasttime = time(0); nframes = 0; |
639 |
|
while (!XCheckMaskEvent(ourdisplay, |
640 |
|
ButtonReleaseMask, levptr(XEvent))) { |
641 |
< |
|
641 |
> |
/* get cursor position */ |
642 |
|
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
643 |
|
&rootx, &rooty, &wx, &wy, &statemask)) |
644 |
|
break; /* on another screen */ |
645 |
|
|
646 |
+ |
draw_grids(0); /* clear old grid lines */ |
647 |
+ |
#ifdef STEREO |
648 |
+ |
pushright(); draw_grids(0); popright(); |
649 |
+ |
#endif |
650 |
+ |
/* compute view motion */ |
651 |
|
if (!moveview(wx, odev.vres-1-wy, movdir, movorb)) { |
652 |
|
sleep(1); |
653 |
< |
continue; |
653 |
> |
lasttime++; |
654 |
> |
continue; /* cursor in bad place */ |
655 |
|
} |
656 |
< |
glClear(GL_COLOR_BUFFER_BIT); |
657 |
< |
qtUpdate(); |
658 |
< |
draw_grids(); |
656 |
> |
draw_grids(1); /* redraw grid */ |
657 |
> |
#ifdef STEREO |
658 |
> |
pushright(); |
659 |
> |
draw_grids(1); |
660 |
> |
smUpdate(&vwright, qlevel); |
661 |
> |
#ifdef DOBJ |
662 |
> |
dobj_render(); |
663 |
> |
#endif |
664 |
> |
popright(); |
665 |
> |
#endif |
666 |
> |
/* redraw mesh */ |
667 |
> |
smUpdate(&odev.v, qlevel); |
668 |
> |
#ifdef DOBJ |
669 |
> |
dobj_render(); /* redraw object */ |
670 |
> |
#endif |
671 |
|
glFlush(); |
672 |
+ |
nframes++; /* figure out good quality level */ |
673 |
+ |
thistime = time(0); |
674 |
+ |
if (thistime - lasttime >= 3 || |
675 |
+ |
nframes > (int)(3*3*TARGETFPS)) { |
676 |
+ |
qlevel = thistime<=lasttime ? 1000 : |
677 |
+ |
(int)((double)nframes/(thistime-lasttime) |
678 |
+ |
/ TARGETFPS * qlevel + 0.5); |
679 |
+ |
lasttime = thistime; nframes = 0; |
680 |
+ |
if (qlevel > 99) { |
681 |
+ |
if (qlevel > 300) { /* put on the brakes */ |
682 |
+ |
sleep(1); |
683 |
+ |
lasttime++; |
684 |
+ |
} |
685 |
+ |
qlevel = 99; |
686 |
+ |
} else if (qlevel < 1) |
687 |
+ |
qlevel = 1; |
688 |
+ |
} |
689 |
|
} |
690 |
|
if (!(inpresflags & DFL(DC_SETVIEW))) { /* do final motion */ |
691 |
|
movdir = MOVDIR(levptr(XButtonReleasedEvent)->button); |
693 |
|
wy = levptr(XButtonReleasedEvent)->y; |
694 |
|
moveview(wx, odev.vres-1-wy, movdir, movorb); |
695 |
|
} |
696 |
< |
dev_flush(); |
696 |
> |
} |
697 |
|
|
698 |
< |
qtMinNodesiz = oldnodesiz; /* restore quadtree resolution */ |
698 |
> |
|
699 |
> |
static |
700 |
> |
setglpersp(vp) /* set perspective view in GL */ |
701 |
> |
register VIEW *vp; |
702 |
> |
{ |
703 |
> |
double d, xmin, xmax, ymin, ymax; |
704 |
> |
|
705 |
> |
if (mindpth >= maxdpth) { |
706 |
> |
dev_zmin = 0.1; |
707 |
> |
dev_zmax = 100.; |
708 |
> |
} else { |
709 |
> |
dev_zmin = 0.5*mindpth; |
710 |
> |
dev_zmax = 1.5*maxdpth; |
711 |
> |
if (dev_zmin > dev_zmax/100.) |
712 |
> |
dev_zmin = dev_zmax/100.; |
713 |
> |
} |
714 |
> |
if (odev.v.vfore > FTINY) |
715 |
> |
dev_zmin = odev.v.vfore; |
716 |
> |
if (odev.v.vaft > FTINY) |
717 |
> |
dev_zmax = odev.v.vaft; |
718 |
> |
if (dev_zmin < dev_zmax/5000.) |
719 |
> |
dev_zmin = dev_zmax/5000.; |
720 |
> |
xmax = dev_zmin * tan(PI/180./2. * odev.v.horiz); |
721 |
> |
xmin = -xmax; |
722 |
> |
d = odev.v.hoff * (xmax - xmin); |
723 |
> |
xmin += d; xmax += d; |
724 |
> |
ymax = dev_zmin * tan(PI/180./2. * odev.v.vert); |
725 |
> |
ymin = -ymax; |
726 |
> |
d = odev.v.voff * (ymax - ymin); |
727 |
> |
ymin += d; ymax += d; |
728 |
> |
/* set view matrix */ |
729 |
> |
glMatrixMode(GL_PROJECTION); |
730 |
> |
glLoadIdentity(); |
731 |
> |
glFrustum(xmin, xmax, ymin, ymax, dev_zmin, dev_zmax); |
732 |
> |
gluLookAt(odev.v.vp[0], odev.v.vp[1], odev.v.vp[2], |
733 |
> |
odev.v.vp[0] + odev.v.vdir[0], |
734 |
> |
odev.v.vp[1] + odev.v.vdir[1], |
735 |
> |
odev.v.vp[2] + odev.v.vdir[2], |
736 |
> |
odev.v.vup[0], odev.v.vup[1], odev.v.vup[2]); |
737 |
> |
checkglerr("setting perspective view"); |
738 |
|
} |
739 |
|
|
740 |
|
|
741 |
|
static |
742 |
+ |
wipeclean() /* prepare for redraw */ |
743 |
+ |
{ |
744 |
+ |
/* clear depth buffer */ |
745 |
+ |
#ifdef STEREO |
746 |
+ |
setstereobuf(STEREO_BUFFER_RIGHT); |
747 |
+ |
glClear(GL_DEPTH_BUFFER_BIT); |
748 |
+ |
setstereobuf(STEREO_BUFFER_LEFT); |
749 |
+ |
#endif |
750 |
+ |
glClear(GL_DEPTH_BUFFER_BIT); |
751 |
+ |
smClean(); /* reset drawing routines */ |
752 |
+ |
setglpersp(&odev.v); /* reset view & clipping planes */ |
753 |
+ |
} |
754 |
+ |
|
755 |
+ |
|
756 |
+ |
static |
757 |
|
getkey(ekey) /* get input key */ |
758 |
|
register XKeyPressedEvent *ekey; |
759 |
|
{ |
760 |
+ |
Window rootw, childw; |
761 |
+ |
int rootx, rooty, wx, wy; |
762 |
+ |
unsigned int statemask; |
763 |
|
int n; |
764 |
|
char buf[8]; |
765 |
|
|
782 |
|
case 'v': /* spit out view */ |
783 |
|
inpresflags |= DFL(DC_GETVIEW); |
784 |
|
return; |
785 |
+ |
case 'f': /* frame view position */ |
786 |
+ |
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
787 |
+ |
&rootx, &rooty, &wx, &wy, &statemask)) |
788 |
+ |
return; /* on another screen */ |
789 |
+ |
sprintf(odev_args, "%.4f %.4f", (wx+.5)/odev.hres, |
790 |
+ |
1.-(wy+.5)/odev.vres); |
791 |
+ |
inpresflags |= DFL(DC_FOCUS); |
792 |
+ |
return; |
793 |
+ |
case 'F': /* unfocus */ |
794 |
+ |
odev_args[0] = '\0'; |
795 |
+ |
inpresflags |= DFL(DC_FOCUS); |
796 |
+ |
return; |
797 |
|
case '\n': |
798 |
|
case '\r': /* resume computation */ |
799 |
|
inpresflags |= DFL(DC_RESUME); |
800 |
|
return; |
801 |
|
case CTRL('R'): /* redraw screen */ |
802 |
< |
glClear(GL_DEPTH_BUFFER_BIT); |
571 |
< |
qtRedraw(0, 0, odev.hres, odev.vres); |
802 |
> |
wipeclean(); |
803 |
|
return; |
804 |
|
case CTRL('L'): /* refresh from server */ |
805 |
|
if (inpresflags & DFL(DC_REDRAW)) |
806 |
|
return; |
807 |
+ |
setglpersp(&odev.v); /* reset clipping planes */ |
808 |
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
809 |
< |
draw_grids(); |
809 |
> |
glDisable(GL_DEPTH_TEST); /* so grids will clear */ |
810 |
> |
draw_grids(1); |
811 |
> |
#ifdef STEREO |
812 |
> |
pushright(); |
813 |
> |
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
814 |
> |
draw_grids(1); |
815 |
> |
popright(); |
816 |
> |
#endif |
817 |
> |
glEnable(GL_DEPTH_TEST); |
818 |
|
glFlush(); |
819 |
< |
qtCompost(100); /* get rid of old values */ |
819 |
> |
smInit(rsL.max_samp); /* get rid of old values */ |
820 |
|
inpresflags |= DFL(DC_REDRAW); /* resend values from server */ |
821 |
+ |
rayqleft = 0; /* hold off update */ |
822 |
|
return; |
823 |
|
case 'K': /* kill rtrace process(es) */ |
824 |
|
inpresflags |= DFL(DC_KILL); |
843 |
|
fixwindow(eexp) /* repair damage to window */ |
844 |
|
register XExposeEvent *eexp; |
845 |
|
{ |
846 |
< |
int xmin, xmax, ymin, ymax; |
606 |
< |
|
607 |
< |
if (odev.hres == 0 || odev.vres == 0) /* first exposure */ |
846 |
> |
if (odev.hres == 0 | odev.vres == 0) { /* first exposure */ |
847 |
|
resizewindow((XConfigureEvent *)eexp); |
848 |
< |
xmin = eexp->x; xmax = eexp->x + eexp->width; |
849 |
< |
ymin = odev.vres - eexp->y - eexp->height; ymax = odev.vres - eexp->y; |
850 |
< |
/* clear portion of depth */ |
851 |
< |
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); |
852 |
< |
glDepthFunc(GL_ALWAYS); |
614 |
< |
glBegin(GL_POLYGON); |
615 |
< |
glVertex3d((double)xmin/odev.hres, (double)ymin/odev.vres, 0.); |
616 |
< |
glVertex3d((double)xmax/odev.hres, (double)ymin/odev.vres, 0.); |
617 |
< |
glVertex3d((double)xmax/odev.hres, (double)ymax/odev.vres, 0.); |
618 |
< |
glVertex3d((double)xmin/odev.hres, (double)ymax/odev.vres, 0.); |
619 |
< |
glEnd(); |
620 |
< |
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); |
621 |
< |
glDepthFunc(GL_LEQUAL); |
622 |
< |
qtRedraw(xmin, ymin, xmax, ymax); |
848 |
> |
return; |
849 |
> |
} |
850 |
> |
if (eexp->count) /* wait for final exposure */ |
851 |
> |
return; |
852 |
> |
wipeclean(); /* clear depth */ |
853 |
|
} |
854 |
|
|
855 |
|
|
857 |
|
resizewindow(ersz) /* resize window */ |
858 |
|
register XConfigureEvent *ersz; |
859 |
|
{ |
860 |
+ |
glViewport(0, 0, ersz->width, ersz->height); |
861 |
+ |
|
862 |
|
if (ersz->width == odev.hres && ersz->height == odev.vres) |
863 |
|
return; |
864 |
|
|
867 |
|
|
868 |
|
odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres); |
869 |
|
odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres); |
638 |
– |
|
639 |
– |
glViewport(0, 0, odev.hres, odev.vres); |
870 |
|
|
871 |
|
inpresflags |= DFL(DC_SETVIEW); |
872 |
|
} |