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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 rview driver. |
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* Based on x11 driver. |
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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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#include "rhd_qtree.h" |
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#include <GL/glx.h> |
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#include "x11icon.h" |
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#ifndef RAYQLEN |
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#define RAYQLEN 50000 /* 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 int4 |
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#define int4 int |
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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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|
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#ifndef FREEPCT |
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#define FREEPCT 25 /* percentage of values to free */ |
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#ifndef MAXVERT |
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#define MAXVERT 64 /* maximum number of cone vertices */ |
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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 MINVERT |
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#define MINVERT 4 /* minimum number of cone vertices */ |
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#endif |
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#ifndef CONEH |
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#define CONEH 0.25 /* cone height (fraction of depth) */ |
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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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#ifndef CONEW |
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#define CONEW 0.035 /* cone width (fraction of screen) */ |
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#endif |
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#define GAMMA 2.2 /* default gamma correction */ |
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#define GAMMA 1.4 /* default gamma correction */ |
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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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static XEvent currentevent; /* current event */ |
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static int mapped = 0; /* window is mapped? */ |
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static unsigned long *pixval = NULL; /* allocated pixels */ |
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static unsigned long ourblack=0, ourwhite=~0; |
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static Display *ourdisplay = NULL; /* our display */ |
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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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static double mindepth = FHUGE; /* minimum depth value so far */ |
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static double maxdepth = 0.; /* maximum depth value */ |
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static double pwidth, pheight; /* pixel dimensions (mm) */ |
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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 curzmax = 1e4; /* current depth upper limit */ |
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static double nxtzmax = 0.; /* maximum (finite) depth so far */ |
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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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|
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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 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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#define redraw() (rV.drl = rV.bl) |
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static int resizewindow(), getevent(), getkey(), moveview(), |
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setGLview(), getmove(), fixwindow(), mytmflags(), |
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newvalue(), drawvalue(), Compost(), |
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FindValue(), AllocValues(), TMapValues(), FreeValues(); |
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initcones(), freecones(), |
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getmove(), fixwindow(), mytmflags(); |
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dev_open(id) /* initialize X11 driver */ |
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char *id; |
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{ |
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extern char *getenv(); |
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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,23, |
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/*GLX_DOUBLEBUFFER,*/ None}; |
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static int atlOK[] = {GLX_RGBA, GLX_RED_SIZE,4, |
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GLX_GREEN_SIZE,4, GLX_BLUE_SIZE,4, |
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GLX_ALPHA_SIZE,4, GLX_DEPTH_SIZE,15, |
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/*GLX_DOUBLEBUFFER,*/ 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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/* set quadtree globals */ |
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qtMinNodesiz = 3; |
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qtDepthEps = 0.07; |
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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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/* find a usable visual */ |
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ourvinf = glXChooseVisual(ourdisplay, ourscreen, atlBest); |
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if (ourvinf == NULL) |
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ourvinf = glXChooseVisual(ourdisplay, ourscreen, atlOK); |
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if (ourvinf == NULL) |
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error(USER, "no suitable visuals available"); |
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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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oursizhints.min_height = MINHEIGHT; |
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oursizhints.flags = PMinSize; |
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XSetNormalHints(ourdisplay, gwind, &oursizhints); |
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/* map the window and get its size */ |
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XMapWindow(ourdisplay, gwind); |
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dev_input(); |
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/* allocate our value list */ |
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if (!AllocValues(DisplayWidth(ourdisplay,ourscreen) * |
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DisplayHeight(ourdisplay,ourscreen) / 4)) |
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error(SYSTEM, "insufficient memory for value storage"); |
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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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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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DisplayHeight(ourdisplay, ourscreen); |
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copystruct(&odev.v, &stdview); |
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odev.v.type = VT_PER; |
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odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres); |
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odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres); |
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/* 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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/* allocate our leaf pile */ |
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if (!qtAllocLeaves(DisplayWidth(ourdisplay,ourscreen) * |
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DisplayHeight(ourdisplay,ourscreen) * 3 / |
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(qtMinNodesiz*qtMinNodesiz*2))) |
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error(SYSTEM, "insufficient memory for value storage"); |
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odev.name = id; |
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odev.ifd = ConnectionNumber(ourdisplay); |
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/* set GLX context and clear buffers */ |
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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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glDisable(GL_DITHER); |
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glDrawBuffer(GL_FRONT_AND_BACK); |
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glReadBuffer(GL_BACK); |
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
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setGLview(); /* initialize view */ |
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/* initialize cone array */ |
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initcones(); |
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} |
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gwind = 0; |
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XCloseDisplay(ourdisplay); |
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ourdisplay = NULL; |
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qtFreeLeaves(); |
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tmDone(NULL); |
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FreeValues(); |
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freecones(); |
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odev.v.type = 0; |
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odev.hres = odev.vres = 0; |
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odev.ifd = -1; |
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} |
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dev_clear() /* clear our quadtree */ |
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{ |
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qtCompost(100); |
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glClear(GL_DEPTH_BUFFER_BIT); |
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rayqleft = 0; /* hold off update */ |
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} |
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|
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|
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int |
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dev_view(nv) /* assign new driver view */ |
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register VIEW *nv; |
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{ |
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< |
if (nv->type != VT_PER || /* check view legality */ |
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< |
nv->horiz > 120. || nv->vert > 120.) { |
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> |
if (nv->type == VT_PAR || /* check view legality */ |
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> |
nv->horiz > 160. || nv->vert > 160.) { |
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error(COMMAND, "illegal view type/angle"); |
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nv->type = VT_PER; |
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> |
nv->type = odev.v.type; |
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nv->horiz = odev.v.horiz; |
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nv->vert = odev.v.vert; |
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return(0); |
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} |
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if (nv->vfore > FTINY) { |
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error(COMMAND, "cannot handle fore clipping"); |
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nv->vfore = 0.; |
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return(0); |
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} |
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if (nv != &odev.v) { |
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if (!FEQ(nv->horiz,odev.v.horiz) || /* resize window? */ |
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!FEQ(nv->vert,odev.v.vert)) { |
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odev.vres = dh; |
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} |
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XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres); |
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dev_input(); /* get resize event */ |
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} |
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copystruct(&odev.v, nv); |
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setGLview(); |
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} |
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< |
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
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< |
redraw(); |
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> |
if (nxtzmax > FTINY) { |
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> |
curzmax = nxtzmax; |
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> |
nxtzmax = 0.; |
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> |
} |
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> |
glClear(GL_DEPTH_BUFFER_BIT); |
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> |
qtReplant(); |
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return(1); |
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} |
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|
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dev_auxcom(cmd, args) /* process an auxiliary command */ |
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char *cmd, *args; |
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{ |
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sprintf(errmsg, "%s: unknown command", cmd); |
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error(COMMAND, errmsg); |
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} |
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+ |
|
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|
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VIEW * |
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dev_auxview(n, hvres) /* return nth auxiliary view */ |
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+ |
int n; |
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+ |
int hvres[2]; |
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{ |
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+ |
if (n) |
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+ |
return(NULL); |
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+ |
hvres[0] = odev.hres; hvres[1] = odev.vres; |
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+ |
return(&odev.v); |
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+ |
} |
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+ |
|
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+ |
|
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int |
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dev_input() /* get X11 input */ |
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{ |
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} |
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|
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|
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< |
dev_value(c, p, v) /* add a pixel value to our list */ |
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< |
COLR c; |
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< |
FVECT p, v; |
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> |
int |
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> |
dev_flush() /* flush output */ |
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{ |
| 304 |
< |
register int li; |
| 305 |
< |
|
| 306 |
< |
li = newvalue(); |
| 307 |
< |
VCOPY(rV.wp[li], p); |
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< |
rV.wd[li] = encodedir(v); |
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< |
tmCvColrs(&rV.brt[li], rV.chr[li], c, 1); |
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> |
qtUpdate(); |
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> |
glFlush(); |
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> |
rayqleft = RAYQLEN; |
| 307 |
> |
return(XPending(ourdisplay)); |
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} |
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|
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|
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< |
int |
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< |
dev_flush() /* flush output */ |
| 311 |
> |
dev_cone(rgb, ip, rad) /* render a cone in view coordinates */ |
| 312 |
> |
BYTE rgb[3]; |
| 313 |
> |
FVECT ip; |
| 314 |
> |
double rad; |
| 315 |
|
{ |
| 316 |
< |
if (mapped) { |
| 317 |
< |
TMapValues(0); |
| 318 |
< |
while (rV.drl != rV.tl) { |
| 319 |
< |
drawvalue(rV.drl); |
| 320 |
< |
if (++rV.drl >= rV.nl) |
| 321 |
< |
rV.drl = 0; |
| 322 |
< |
} |
| 323 |
< |
glFlush(); |
| 316 |
> |
register int ci, j; |
| 317 |
> |
double apexh, basez; |
| 318 |
> |
/* is window mapped? */ |
| 319 |
> |
if (!mapped) |
| 320 |
> |
return; |
| 321 |
> |
/* compute apex height (0. to 1.) */ |
| 322 |
> |
if (ip[2] > 1e6) |
| 323 |
> |
apexh = 1. - 1./DEPTHFACT; |
| 324 |
> |
else { |
| 325 |
> |
if (ip[2] > nxtzmax) |
| 326 |
> |
nxtzmax = ip[2]; |
| 327 |
> |
if (ip[2] >= curzmax) |
| 328 |
> |
apexh = 1. - 1./DEPTHFACT; |
| 329 |
> |
else |
| 330 |
> |
apexh = 1. - ip[2]/(curzmax*DEPTHFACT); |
| 331 |
|
} |
| 332 |
< |
return(XPending(ourdisplay)); |
| 332 |
> |
rad *= 1.25; /* find conservative cone match */ |
| 333 |
> |
for (ci = 0; ci < MAXCONE-1; ci++) |
| 334 |
> |
if (cone[ci].rad >= rad) |
| 335 |
> |
break; |
| 336 |
> |
/* draw it */ |
| 337 |
> |
glColor3ub(rgb[0], rgb[1], rgb[2]); |
| 338 |
> |
glBegin(GL_TRIANGLE_FAN); |
| 339 |
> |
glVertex3d(ip[0], ip[1], apexh); /* start with apex */ |
| 340 |
> |
basez = apexh*cone[ci].va[0][2]; /* base z's all the same */ |
| 341 |
> |
for (j = 0; j < cone[ci].nverts; j++) /* draw each face */ |
| 342 |
> |
glVertex3d(ip[0]+cone[ci].va[j][0], ip[1]+cone[ci].va[j][1], |
| 343 |
> |
basez); |
| 344 |
> |
/* connect last to first */ |
| 345 |
> |
glVertex3d(ip[0]+cone[ci].va[0][0], ip[1]+cone[ci].va[0][1], basez); |
| 346 |
> |
glEnd(); /* all done */ |
| 347 |
|
} |
| 348 |
|
|
| 349 |
|
|
| 359 |
|
for (cp = tail; *cp && *cp != '.'; cp++) |
| 360 |
|
; |
| 361 |
|
if (cp-tail == 3 && !strncmp(tail, "glx", 3)) |
| 362 |
< |
return(TM_F_CAMERA); |
| 362 |
> |
return(TM_F_CAMERA|TM_F_NOSTDERR); |
| 363 |
|
if (cp-tail == 4 && !strncmp(tail, "glxh", 4)) |
| 364 |
< |
return(TM_F_HUMAN); |
| 364 |
> |
return(TM_F_HUMAN|TM_F_NOSTDERR); |
| 365 |
|
error(USER, "illegal driver name"); |
| 366 |
|
} |
| 367 |
|
|
| 368 |
|
|
| 369 |
|
static |
| 370 |
< |
setGLview() /* set our GL view */ |
| 370 |
> |
initcones() /* initialize cone vertices */ |
| 371 |
|
{ |
| 325 |
– |
double xmin, xmax, ymin, ymax, zmin, zmax; |
| 326 |
– |
double d, cx, sx, crad; |
| 327 |
– |
FVECT vx, vy; |
| 372 |
|
register int i, j; |
| 373 |
< |
/* compute view frustum */ |
| 374 |
< |
if (normalize(odev.v.vdir) == 0.0) |
| 375 |
< |
return; |
| 376 |
< |
if (mindepth < maxdepth) { |
| 377 |
< |
zmin = 0.25*mindepth; |
| 378 |
< |
zmax = 8.0*maxdepth; |
| 379 |
< |
} else { |
| 380 |
< |
zmin = 0.01; |
| 381 |
< |
zmax = 1000.; |
| 373 |
> |
double minrad, d; |
| 374 |
> |
|
| 375 |
> |
if (cone[0].nverts) |
| 376 |
> |
freecones(); |
| 377 |
> |
minrad = 2.*qtMinNodesiz/(double)(DisplayWidth(ourdisplay,ourscreen) + |
| 378 |
> |
DisplayHeight(ourdisplay,ourscreen)); |
| 379 |
> |
for (i = 0; i < MAXCONE; i++) { |
| 380 |
> |
d = (double)i/(MAXCONE-1); d *= d; /* x^2 distribution */ |
| 381 |
> |
cone[i].rad = minrad + (1.-minrad)*d; |
| 382 |
> |
cone[i].nverts = MINVERT + 0.5 + (MAXVERT-MINVERT)*d; |
| 383 |
> |
cone[i].va = (FVECT *)malloc(cone[i].nverts*sizeof(FVECT)); |
| 384 |
> |
if (cone[i].va == NULL) |
| 385 |
> |
error(SYSTEM, "out of memory in initcones"); |
| 386 |
> |
for (j = cone[i].nverts; j--; ) { |
| 387 |
> |
d = 2.*PI * (j+.5) / (cone[i].nverts); |
| 388 |
> |
cone[i].va[j][0] = cos(d) * cone[i].rad; |
| 389 |
> |
cone[i].va[j][1] = sin(d) * cone[i].rad; |
| 390 |
> |
cone[i].va[j][2] = 1. - cone[i].rad; |
| 391 |
> |
} |
| 392 |
|
} |
| 339 |
– |
if (odev.v.vfore > FTINY) |
| 340 |
– |
zmin = odev.v.vfore; |
| 341 |
– |
if (odev.v.vaft > FTINY) |
| 342 |
– |
zmax = odev.v.vaft; |
| 343 |
– |
xmax = zmin * tan(PI/180./2. * odev.v.horiz); |
| 344 |
– |
xmin = -xmax; |
| 345 |
– |
d = odev.v.hoff * (xmax - xmin); |
| 346 |
– |
xmin += d; xmax += d; |
| 347 |
– |
ymax = zmin * tan(PI/180./2. * odev.v.vert); |
| 348 |
– |
ymin = -ymax; |
| 349 |
– |
d = odev.v.voff * (ymax - ymin); |
| 350 |
– |
ymin += d; ymax += d; |
| 351 |
– |
/* set view matrix */ |
| 352 |
– |
glMatrixMode(GL_PROJECTION); |
| 353 |
– |
glLoadIdentity(); |
| 354 |
– |
glFrustum(xmin, xmax, ymin, ymax, zmin, zmax); |
| 355 |
– |
gluLookAt(odev.v.vp[0], odev.v.vp[1], odev.v.vp[2], |
| 356 |
– |
odev.v.vp[0] + odev.v.vdir[0], |
| 357 |
– |
odev.v.vp[1] + odev.v.vdir[1], |
| 358 |
– |
odev.v.vp[2] + odev.v.vdir[2], |
| 359 |
– |
odev.v.vup[0], odev.v.vup[1], odev.v.vup[2]); |
| 360 |
– |
/* set viewport */ |
| 361 |
– |
glViewport(0, 0, odev.hres, odev.vres); |
| 362 |
– |
/* initialize cone for Vornoi polys */ |
| 363 |
– |
coneh = CONEH*(zmax - zmin); |
| 364 |
– |
crad = 0.5 * CONEW * 0.5*(xmax-xmin + ymax-ymin) * (zmin+coneh)/zmin; |
| 365 |
– |
vy[0] = vy[1] = vy[2] = 0.; |
| 366 |
– |
for (i = 0; i < 3; i++) |
| 367 |
– |
if (odev.v.vdir[i] < 0.6 && odev.v.vdir[i] > -0.6) |
| 368 |
– |
break; |
| 369 |
– |
vy[i] = 1.; |
| 370 |
– |
fcross(vx, vy, odev.v.vdir); |
| 371 |
– |
normalize(vx); |
| 372 |
– |
fcross(vy, odev.v.vdir, vx); |
| 373 |
– |
for (j = 0, d = 0.; j < NCONEV; j++, d += 2.*PI/NCONEV) { |
| 374 |
– |
cx = crad*cos(d); sx = crad*sin(d); |
| 375 |
– |
for (i = 0; i < 3; i++) |
| 376 |
– |
conev[j][i] = coneh*odev.v.vdir[i] + |
| 377 |
– |
cx*vx[i] + sx*vy[i]; |
| 378 |
– |
} |
| 393 |
|
} |
| 394 |
|
|
| 395 |
|
|
| 382 |
– |
static int |
| 383 |
– |
newvalue() /* allocate a leaf from our pile */ |
| 384 |
– |
{ |
| 385 |
– |
int li; |
| 386 |
– |
|
| 387 |
– |
li = rV.tl++; |
| 388 |
– |
if (rV.tl >= rV.nl) /* get next leaf in ring */ |
| 389 |
– |
rV.tl = 0; |
| 390 |
– |
if (rV.tl == rV.bl) /* need to shake some free */ |
| 391 |
– |
Compost(FREEPCT); |
| 392 |
– |
return(li); |
| 393 |
– |
} |
| 394 |
– |
|
| 395 |
– |
|
| 396 |
|
static |
| 397 |
< |
drawvalue(li) /* draw a pixel value as a cone */ |
| 398 |
< |
register int li; |
| 397 |
> |
freecones() /* free cone vertices */ |
| 398 |
|
{ |
| 400 |
– |
static FVECT apex, disp; |
| 401 |
– |
double d, h, v; |
| 399 |
|
register int i; |
| 403 |
– |
/* compute cone's base displacement */ |
| 404 |
– |
VCOPY(apex, rV.wp[li]); |
| 405 |
– |
disp[0] = apex[0] - odev.v.vp[0]; |
| 406 |
– |
disp[1] = apex[1] - odev.v.vp[1]; |
| 407 |
– |
disp[2] = apex[2] - odev.v.vp[2]; |
| 408 |
– |
if ((d = DOT(disp,odev.v.vdir)) <= odev.v.vfore || d <= FTINY) |
| 409 |
– |
return; |
| 410 |
– |
if (d > 1e5) { /* background region */ |
| 411 |
– |
if (odev.v.vaft > FTINY) |
| 412 |
– |
return; |
| 413 |
– |
h = maxdepth/d; |
| 414 |
– |
disp[0] *= h; disp[1] *= h; disp[2] *= h; |
| 415 |
– |
apex[0] = odev.v.vp[0] + disp[0]; |
| 416 |
– |
apex[1] = odev.v.vp[1] + disp[1]; |
| 417 |
– |
apex[2] = odev.v.vp[2] + disp[2]; |
| 418 |
– |
d = maxdepth; |
| 419 |
– |
} else if (d > maxdepth) |
| 420 |
– |
maxdepth = d; |
| 421 |
– |
h = DOT(disp,odev.v.hvec)/(d*odev.v.hn2); |
| 422 |
– |
v = DOT(disp,odev.v.vvec)/(d*odev.v.vn2); |
| 423 |
– |
if (fabs(h - odev.v.hoff) < 0.5 && fabs(v - odev.v.voff) < 0.5 && |
| 424 |
– |
d < mindepth) |
| 425 |
– |
{ |
| 426 |
– |
fprintf(stderr, "min depth now %lf (%lf,%lf,%lf)\n", d, apex[0], apex[1], apex[2]); |
| 427 |
– |
mindepth = d; |
| 428 |
– |
} |
| 429 |
– |
for (i = 0; i < 3; i++) |
| 430 |
– |
disp[i] = apex[i] + coneh*(h*odev.v.hvec[i] + v*odev.v.vvec[i]); |
| 431 |
– |
/* draw pyramid (cone approx.) */ |
| 432 |
– |
glColor4ub(rV.rgb[li][0], rV.rgb[li][1], rV.rgb[li][2], rV.alpha[li]); |
| 433 |
– |
glBegin(GL_TRIANGLE_FAN); |
| 434 |
– |
glVertex3f(apex[0], apex[1], apex[2]); |
| 435 |
– |
for (i = 0; i < NCONEV; i++) |
| 436 |
– |
glVertex3d(conev[i][0] + disp[0], conev[i][1] + disp[1], |
| 437 |
– |
conev[i][2] + disp[2]); |
| 438 |
– |
/* connect last side to first */ |
| 439 |
– |
glVertex3d(conev[0][0] + disp[0], conev[0][1] + disp[1], |
| 440 |
– |
conev[0][2] + disp[2]); |
| 441 |
– |
glEnd(); /* done */ |
| 442 |
– |
} |
| 400 |
|
|
| 401 |
< |
|
| 402 |
< |
#define LEAFSIZ (3*sizeof(float)+sizeof(int4)+\ |
| 403 |
< |
sizeof(TMbright)+7*sizeof(BYTE)) |
| 404 |
< |
|
| 405 |
< |
static |
| 406 |
< |
AllocValues(n) /* allocate space for n values */ |
| 450 |
< |
register int n; |
| 451 |
< |
{ |
| 452 |
< |
unsigned nbytes; |
| 453 |
< |
register unsigned i; |
| 454 |
< |
|
| 455 |
< |
if (n <= 0) |
| 456 |
< |
return(0); |
| 457 |
< |
if (rV.nl >= n) |
| 458 |
< |
return(rV.nl); |
| 459 |
< |
else if (rV.nl > 0) |
| 460 |
< |
free(rV.base); |
| 461 |
< |
/* round space up to nearest power of 2 */ |
| 462 |
< |
nbytes = n*LEAFSIZ + 8; |
| 463 |
< |
for (i = 1024; nbytes > i; i <<= 1) |
| 464 |
< |
; |
| 465 |
< |
n = (i - 8) / LEAFSIZ; /* should we make sure n is even? */ |
| 466 |
< |
rV.base = (char *)malloc(n*LEAFSIZ); |
| 467 |
< |
if (rV.base == NULL) |
| 468 |
< |
return(0); |
| 469 |
< |
/* assign larger alignment types earlier */ |
| 470 |
< |
rV.wp = (float (*)[3])rV.base; |
| 471 |
< |
rV.wd = (int4 *)(rV.wp + n); |
| 472 |
< |
rV.brt = (TMbright *)(rV.wd + n); |
| 473 |
< |
rV.chr = (BYTE (*)[3])(rV.brt + n); |
| 474 |
< |
rV.rgb = (BYTE (*)[3])(rV.chr + n); |
| 475 |
< |
rV.alpha = (BYTE *)(rV.rgb + n); |
| 476 |
< |
rV.nl = n; |
| 477 |
< |
rV.drl = rV.tml = rV.bl = rV.tl = 0; |
| 478 |
< |
return(n); |
| 401 |
> |
for (i = MAXCONE; i--; ) |
| 402 |
> |
if (cone[i].nverts) { |
| 403 |
> |
free((char *)cone[i].va); |
| 404 |
> |
cone[i].va = NULL; |
| 405 |
> |
cone[i].nverts = 0; |
| 406 |
> |
} |
| 407 |
|
} |
| 408 |
|
|
| 481 |
– |
#undef LEAFSIZ |
| 409 |
|
|
| 483 |
– |
|
| 410 |
|
static |
| 485 |
– |
FreeValues() /* free our allocated values */ |
| 486 |
– |
{ |
| 487 |
– |
if (rV.nl <= 0) |
| 488 |
– |
return; |
| 489 |
– |
free(rV.base); |
| 490 |
– |
rV.base = NULL; |
| 491 |
– |
rV.nl = 0; |
| 492 |
– |
} |
| 493 |
– |
|
| 494 |
– |
|
| 495 |
– |
static |
| 496 |
– |
TMapValues(redo) /* map our values to RGB */ |
| 497 |
– |
int redo; |
| 498 |
– |
{ |
| 499 |
– |
int aorg, alen, borg, blen; |
| 500 |
– |
/* recompute mapping? */ |
| 501 |
– |
if (redo) |
| 502 |
– |
rV.tml = rV.bl; |
| 503 |
– |
/* already done? */ |
| 504 |
– |
if (rV.tml == rV.tl) |
| 505 |
– |
return(1); |
| 506 |
– |
/* compute segments */ |
| 507 |
– |
aorg = rV.tml; |
| 508 |
– |
if (rV.tl >= aorg) { |
| 509 |
– |
alen = rV.tl - aorg; |
| 510 |
– |
blen = 0; |
| 511 |
– |
} else { |
| 512 |
– |
alen = rV.nl - aorg; |
| 513 |
– |
borg = 0; |
| 514 |
– |
blen = rV.tl; |
| 515 |
– |
} |
| 516 |
– |
/* (re)compute tone mapping? */ |
| 517 |
– |
if (rV.tml == rV.bl) { |
| 518 |
– |
tmClearHisto(); |
| 519 |
– |
tmAddHisto(rV.brt+aorg, alen, 1); |
| 520 |
– |
if (blen > 0) |
| 521 |
– |
tmAddHisto(rV.brt+borg, blen, 1); |
| 522 |
– |
if (tmComputeMapping(0., 0., 0.) != TM_E_OK) |
| 523 |
– |
return(0); |
| 524 |
– |
rV.drl = rV.bl; |
| 525 |
– |
} |
| 526 |
– |
if (tmMapPixels(rV.rgb+aorg, rV.brt+aorg, |
| 527 |
– |
rV.chr+aorg, alen) != TM_E_OK) |
| 528 |
– |
return(0); |
| 529 |
– |
if (blen > 0) |
| 530 |
– |
tmMapPixels(rV.rgb+borg, rV.brt+borg, |
| 531 |
– |
rV.chr+borg, blen); |
| 532 |
– |
/* compute unique alpha values */ |
| 533 |
– |
rV.tml = rV.tl; |
| 534 |
– |
return(1); |
| 535 |
– |
} |
| 536 |
– |
|
| 537 |
– |
|
| 538 |
– |
static int |
| 539 |
– |
Compost(pct) /* free up some values */ |
| 540 |
– |
int pct; |
| 541 |
– |
{ |
| 542 |
– |
int nused, nclear, nmapped, ndrawn; |
| 543 |
– |
/* figure out how many values to clear */ |
| 544 |
– |
nclear = rV.nl * pct / 100; |
| 545 |
– |
nused = rV.tl - rV.bl; |
| 546 |
– |
if (nused <= 0) nused += rV.nl; |
| 547 |
– |
nclear -= rV.nl - nused; |
| 548 |
– |
if (nclear <= 0) |
| 549 |
– |
return(0); |
| 550 |
– |
if (nclear >= nused) { /* clear them all */ |
| 551 |
– |
rV.drl = rV.tml = rV.bl = rV.tl = 0; |
| 552 |
– |
return(nused); |
| 553 |
– |
} |
| 554 |
– |
/* else clear values from bottom */ |
| 555 |
– |
ndrawn = rV.drl - rV.bl; |
| 556 |
– |
if (ndrawn < 0) ndrawn += rV.nl; |
| 557 |
– |
nmapped = rV.tml - rV.bl; |
| 558 |
– |
if (nmapped < 0) nmapped += rV.nl; |
| 559 |
– |
rV.bl += nclear; |
| 560 |
– |
if (rV.bl >= rV.nl) rV.bl -= rV.nl; |
| 561 |
– |
if (ndrawn < nclear) rV.drl = rV.bl; |
| 562 |
– |
if (nmapped < nclear) rV.tml = rV.bl; |
| 563 |
– |
return(nclear); |
| 564 |
– |
} |
| 565 |
– |
|
| 566 |
– |
|
| 567 |
– |
static |
| 411 |
|
getevent() /* get next event */ |
| 412 |
|
{ |
| 413 |
|
XNextEvent(ourdisplay, levptr(XEvent)); |
| 446 |
|
static |
| 447 |
|
draw_grids() /* draw holodeck section grids */ |
| 448 |
|
{ |
| 449 |
< |
static GLubyte gridrgba[4] = {0x0, 0xff, 0xff, 0x00}; |
| 450 |
< |
|
| 451 |
< |
if (!mapped) |
| 449 |
> |
static BYTE gridrgba[4] = {0x0, 0xff, 0xff, 0x00}; |
| 450 |
> |
double xmin, xmax, ymin, ymax, zmin, zmax; |
| 451 |
> |
double d, cx, sx, crad; |
| 452 |
> |
FVECT vx, vy; |
| 453 |
> |
register int i, j; |
| 454 |
> |
/* can we even do it? */ |
| 455 |
> |
if (!mapped || odev.v.type != VT_PER) |
| 456 |
|
return; |
| 457 |
+ |
/* compute view frustum */ |
| 458 |
+ |
if (normalize(odev.v.vdir) == 0.0) |
| 459 |
+ |
return; |
| 460 |
+ |
zmin = 0.01; |
| 461 |
+ |
zmax = 10000.; |
| 462 |
+ |
if (odev.v.vfore > FTINY) |
| 463 |
+ |
zmin = odev.v.vfore; |
| 464 |
+ |
if (odev.v.vaft > FTINY) |
| 465 |
+ |
zmax = odev.v.vaft; |
| 466 |
+ |
xmax = zmin * tan(PI/180./2. * odev.v.horiz); |
| 467 |
+ |
xmin = -xmax; |
| 468 |
+ |
d = odev.v.hoff * (xmax - xmin); |
| 469 |
+ |
xmin += d; xmax += d; |
| 470 |
+ |
ymax = zmin * tan(PI/180./2. * odev.v.vert); |
| 471 |
+ |
ymin = -ymax; |
| 472 |
+ |
d = odev.v.voff * (ymax - ymin); |
| 473 |
+ |
ymin += d; ymax += d; |
| 474 |
+ |
/* set view matrix */ |
| 475 |
+ |
glMatrixMode(GL_PROJECTION); |
| 476 |
+ |
glPushMatrix(); |
| 477 |
+ |
glLoadIdentity(); |
| 478 |
+ |
glFrustum(xmin, xmax, ymin, ymax, zmin, zmax); |
| 479 |
+ |
gluLookAt(odev.v.vp[0], odev.v.vp[1], odev.v.vp[2], |
| 480 |
+ |
odev.v.vp[0] + odev.v.vdir[0], |
| 481 |
+ |
odev.v.vp[1] + odev.v.vdir[1], |
| 482 |
+ |
odev.v.vp[2] + odev.v.vdir[2], |
| 483 |
+ |
odev.v.vup[0], odev.v.vup[1], odev.v.vup[2]); |
| 484 |
+ |
glDisable(GL_DEPTH_TEST); /* write no depth values */ |
| 485 |
|
glColor4ub(gridrgba[0], gridrgba[1], gridrgba[2], gridrgba[3]); |
| 486 |
< |
/* draw each grid line */ |
| 612 |
< |
glBegin(GL_LINES); |
| 486 |
> |
glBegin(GL_LINES); /* draw each grid line */ |
| 487 |
|
gridlines(draw3dline); |
| 488 |
|
glEnd(); |
| 489 |
+ |
glEnable(GL_DEPTH_TEST); /* restore rendering params */ |
| 490 |
+ |
glPopMatrix(); |
| 491 |
|
} |
| 492 |
|
|
| 493 |
|
|
| 618 |
– |
static int |
| 619 |
– |
FindValue(dx, dy) /* find a value on the display */ |
| 620 |
– |
int dx, dy; |
| 621 |
– |
{ |
| 622 |
– |
return(-1); /* not found */ |
| 623 |
– |
} |
| 624 |
– |
|
| 625 |
– |
|
| 494 |
|
static |
| 495 |
|
moveview(dx, dy, mov, orb) /* move our view */ |
| 496 |
|
int dx, dy, mov, orb; |
| 503 |
|
copystruct(&nv, &odev.v); |
| 504 |
|
/* change view direction */ |
| 505 |
|
if (mov | orb) { |
| 506 |
< |
if ((li = FindValue(dx, dy)) < 0) |
| 506 |
> |
if ((li = qtFindLeaf(dx, dy)) < 0) |
| 507 |
|
return(0); /* not on window */ |
| 508 |
< |
VSUM(odir, rV.wp[li], nv.vp, -1.); |
| 508 |
> |
VSUM(odir, qtL.wp[li], nv.vp, -1.); |
| 509 |
|
} else { |
| 510 |
|
if (viewray(nv.vp, nv.vdir, &odev.v, |
| 511 |
|
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY) |
| 513 |
|
} |
| 514 |
|
if (orb && mov) { /* orbit left/right */ |
| 515 |
|
spinvector(odir, odir, nv.vup, d=MOVDEG*PI/180.*mov); |
| 516 |
< |
VSUM(nv.vp, rV.wp[li], odir, -1.); |
| 516 |
> |
VSUM(nv.vp, qtL.wp[li], odir, -1.); |
| 517 |
|
spinvector(nv.vdir, nv.vdir, nv.vup, d); |
| 518 |
|
} else if (orb) { /* orbit up/down */ |
| 519 |
|
fcross(v1, odir, nv.vup); |
| 520 |
|
if (normalize(v1) == 0.) |
| 521 |
|
return(0); |
| 522 |
|
spinvector(odir, odir, v1, d=MOVDEG*PI/180.*orb); |
| 523 |
< |
VSUM(nv.vp, rV.wp[li], odir, -1.); |
| 523 |
> |
VSUM(nv.vp, qtL.wp[li], odir, -1.); |
| 524 |
|
spinvector(nv.vdir, nv.vdir, v1, d); |
| 525 |
|
} else if (mov) { /* move forward/backward */ |
| 526 |
|
d = MOVPCT/100. * mov; |
| 545 |
|
{ |
| 546 |
|
int movdir = MOVDIR(ebut->button); |
| 547 |
|
int movorb = MOVORB(ebut->state); |
| 548 |
+ |
int oldnodesiz = qtMinNodesiz; |
| 549 |
|
Window rootw, childw; |
| 550 |
|
int rootx, rooty, wx, wy; |
| 551 |
|
unsigned int statemask; |
| 552 |
|
|
| 553 |
+ |
qtMinNodesiz = 24; /* accelerate update rate */ |
| 554 |
|
XNoOp(ourdisplay); |
| 555 |
|
|
| 556 |
|
while (!XCheckMaskEvent(ourdisplay, |
| 564 |
|
sleep(1); |
| 565 |
|
continue; |
| 566 |
|
} |
| 567 |
+ |
glClear(GL_COLOR_BUFFER_BIT); |
| 568 |
+ |
qtUpdate(); |
| 569 |
|
draw_grids(); |
| 570 |
< |
dev_flush(); |
| 570 |
> |
glFlush(); |
| 571 |
|
} |
| 572 |
|
if (!(inpresflags & DFL(DC_SETVIEW))) { /* do final motion */ |
| 573 |
|
movdir = MOVDIR(levptr(XButtonReleasedEvent)->button); |
| 576 |
|
moveview(wx, odev.vres-1-wy, movdir, movorb); |
| 577 |
|
} |
| 578 |
|
dev_flush(); |
| 579 |
+ |
|
| 580 |
+ |
qtMinNodesiz = oldnodesiz; /* restore quadtree resolution */ |
| 581 |
|
} |
| 582 |
|
|
| 583 |
|
|
| 612 |
|
inpresflags |= DFL(DC_RESUME); |
| 613 |
|
return; |
| 614 |
|
case CTRL('R'): /* redraw screen */ |
| 615 |
< |
TMapValues(1); |
| 616 |
< |
redraw(); |
| 615 |
> |
if (nxtzmax > FTINY) { |
| 616 |
> |
curzmax = nxtzmax; |
| 617 |
> |
nxtzmax = 0.; |
| 618 |
> |
} |
| 619 |
> |
glClear(GL_DEPTH_BUFFER_BIT); |
| 620 |
> |
qtRedraw(0, 0, odev.hres, odev.vres); |
| 621 |
|
return; |
| 622 |
|
case CTRL('L'): /* refresh from server */ |
| 623 |
|
if (inpresflags & DFL(DC_REDRAW)) |
| 624 |
|
return; |
| 625 |
+ |
if (nxtzmax > FTINY) { |
| 626 |
+ |
curzmax = nxtzmax; |
| 627 |
+ |
nxtzmax = 0.; |
| 628 |
+ |
} |
| 629 |
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
| 748 |
– |
glDrawBuffer(GL_FRONT); |
| 749 |
– |
glDisable(GL_DEPTH_TEST); |
| 630 |
|
draw_grids(); |
| 751 |
– |
glEnable(GL_DEPTH_TEST); |
| 752 |
– |
glDrawBuffer(GL_FRONT_AND_BACK); |
| 631 |
|
glFlush(); |
| 632 |
< |
Compost(100); /* get rid of old values */ |
| 632 |
> |
qtCompost(100); /* get rid of old values */ |
| 633 |
|
inpresflags |= DFL(DC_REDRAW); /* resend values from server */ |
| 634 |
+ |
rayqleft = 0; /* hold off update */ |
| 635 |
|
return; |
| 636 |
|
case 'K': /* kill rtrace process(es) */ |
| 637 |
|
inpresflags |= DFL(DC_KILL); |
| 656 |
|
fixwindow(eexp) /* repair damage to window */ |
| 657 |
|
register XExposeEvent *eexp; |
| 658 |
|
{ |
| 659 |
< |
if (odev.hres == 0 || odev.vres == 0) { /* first exposure */ |
| 660 |
< |
odev.hres = eexp->width; |
| 661 |
< |
odev.vres = eexp->height; |
| 662 |
< |
} |
| 663 |
< |
if (eexp->width == odev.hres && eexp->height == odev.vres) |
| 664 |
< |
TMapValues(1); |
| 665 |
< |
if (!eexp->count) |
| 666 |
< |
redraw(); |
| 659 |
> |
int xmin, xmax, ymin, ymax; |
| 660 |
> |
|
| 661 |
> |
if (odev.hres == 0 || odev.vres == 0) /* first exposure */ |
| 662 |
> |
resizewindow((XConfigureEvent *)eexp); |
| 663 |
> |
xmin = eexp->x; xmax = eexp->x + eexp->width; |
| 664 |
> |
ymin = odev.vres - eexp->y - eexp->height; ymax = odev.vres - eexp->y; |
| 665 |
> |
/* clear portion of depth */ |
| 666 |
> |
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); |
| 667 |
> |
glDepthFunc(GL_ALWAYS); |
| 668 |
> |
glBegin(GL_POLYGON); |
| 669 |
> |
glVertex3d((double)xmin/odev.hres, (double)ymin/odev.vres, 0.); |
| 670 |
> |
glVertex3d((double)xmax/odev.hres, (double)ymin/odev.vres, 0.); |
| 671 |
> |
glVertex3d((double)xmax/odev.hres, (double)ymax/odev.vres, 0.); |
| 672 |
> |
glVertex3d((double)xmin/odev.hres, (double)ymax/odev.vres, 0.); |
| 673 |
> |
glEnd(); |
| 674 |
> |
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); |
| 675 |
> |
glDepthFunc(GL_LEQUAL); |
| 676 |
> |
qtRedraw(xmin, ymin, xmax, ymax); |
| 677 |
|
} |
| 678 |
|
|
| 679 |
|
|
| 681 |
|
resizewindow(ersz) /* resize window */ |
| 682 |
|
register XConfigureEvent *ersz; |
| 683 |
|
{ |
| 684 |
+ |
glViewport(0, 0, ersz->width, ersz->height); |
| 685 |
+ |
|
| 686 |
|
if (ersz->width == odev.hres && ersz->height == odev.vres) |
| 687 |
|
return; |
| 688 |
|
|
| 691 |
|
|
| 692 |
|
odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres); |
| 693 |
|
odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres); |
| 803 |
– |
|
| 804 |
– |
setGLview(); |
| 694 |
|
|
| 695 |
|
inpresflags |= DFL(DC_SETVIEW); |
| 696 |
|
} |
