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#ifndef lint
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static const char RCSid[] = "$Id: rhd_ogl.c,v 3.33 2018/10/05 19:19:16 greg Exp $";
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#endif
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/*
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* OpenGL driver for holodeck display.
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* Based on GLX driver using T-mesh.
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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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#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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#include <time.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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#include "standard.h"
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#include "rhd_odraw.h"
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#include "rhdisp.h"
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#include "paths.h"
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#ifdef DOBJ
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#include "rhdobj.h"
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#endif
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#include "x11icon.h"
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#ifndef RAYQLEN
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#define RAYQLEN 0 /* max. rays to queue before flush */
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#endif
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#ifndef MINWIDTH
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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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#endif
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#ifndef VIEWDIST
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#define VIEWDIST 356 /* assumed viewing distance (mm) */
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#endif
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#ifndef BORWIDTH
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#define BORWIDTH 5 /* border width */
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#endif
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#define VWHEADLOCK 01 /* head position is locked flag */
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#define VWPERSP 02 /* perspective view is set */
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#define VWORTHO 04 /* orthographic view is set */
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#define VWCHANGE 010 /* view has changed */
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#define VWSTEADY 020 /* view is now steady */
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#define VWMAPPED 040 /* window is mapped */
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#define GAMMA 1.4 /* default gamma correction */
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#define FRAMESTATE(s) (((s)&(ShiftMask|ControlMask))==(ShiftMask|ControlMask))
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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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#define setstereobuf(bid) (glXWaitGL(), \
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XSGISetStereoBuffer(ourdisplay, gwind, bid), \
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glXWaitX())
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#define ourscreen DefaultScreen(ourdisplay)
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#define ourroot RootWindow(ourdisplay,ourscreen)
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#define ourmask (StructureNotifyMask|ExposureMask|KeyPressMask|\
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ButtonPressMask|ButtonReleaseMask)
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#define levptr(etype) ((etype *)¤tevent)
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struct driver odev; /* global device driver structure */
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TMstruct *tmGlobal; /* global tone-mapping structure */
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char odev_args[64]; /* command arguments */
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static GLfloat *depthbuffer = NULL; /* depth buffer */
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#ifdef STEREO
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static VIEW vwright; /* right eye view */
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static GLfloat *depthright = NULL; /* right depth buffer */
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#endif
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static int rayqleft = 0; /* rays left to queue before flush */
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static XEvent currentevent; /* current event */
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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 XVisualInfo *ourvinf; /* our visual information */
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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 pwidth, pheight; /* pixel dimensions (mm) */
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static double dev_zmin, dev_zmax; /* fore and aft clipping plane dist. */
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static double dev_zrat; /* (1. - dev_zmin/dev_zmax) */
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#define setzrat() (dev_zrat = 1. - dev_zmin/dev_zmax)
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#define mapdepth(d) ((d)>0.9995 ? FHUGE : dev_zmin/(1.-(d)*dev_zrat))
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static int inpresflags; /* input result flags */
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static int viewflags; /* what's happening with view */
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/*
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static int resizewindow(), getevent(), getkey(), moveview(), wipeclean(),
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xferdepth(), freedepth(), setglortho(),
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setglpersp(), getframe(), getmove(), fixwindow(), mytmflags();
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static double getdistance();
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*/
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static void checkglerr(char *where);
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static void xferdepth(void);
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static void freedepth(void);
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static double getdistance(int dx, int dy, FVECT direc);
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static int mytmflags(void);
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static void getevent(void);
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static void draw3dline(FVECT wp[2]);
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static void draw_grids(int fore);
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static int moveview(int dx, int dy, int mov, int orb);
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static void getframe(XButtonPressedEvent *ebut);
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static void getmove(XButtonPressedEvent *ebut);
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static void getkey(XKeyPressedEvent *ekey);
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static void fixwindow(XExposeEvent *eexp);
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static void resizewindow(XConfigureEvent *ersz);
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static void waitabit(void);
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static void setglpersp(void);
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static void setglortho(void);
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static void wipeclean(void);
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#ifdef STEREO
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static void pushright(void);
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static void popright(void);
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#endif
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extern int gmPortals; /* GL portal list id */
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extern time_t time();
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void
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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_DOUBLEBUFFER,
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GLX_RED_SIZE,8, GLX_GREEN_SIZE,8,
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GLX_BLUE_SIZE,8, GLX_DEPTH_SIZE,15, None};
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static int atlOK[] = {GLX_RGBA, GLX_DOUBLEBUFFER,
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GLX_RED_SIZE,4, GLX_GREEN_SIZE,4,
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GLX_BLUE_SIZE,4, GLX_DEPTH_SIZE,15, None};
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char *ev;
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double gamval = GAMMA;
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RGBPRIMP dpri = stdprims;
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XSetWindowAttributes ourwinattr;
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XWMHints ourxwmhints;
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XSizeHints oursizhints;
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/* check for unsupported stereo */
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#ifdef NOSTEREO
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error(INTERNAL, "stereo display driver unavailable");
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#endif
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/* open display server */
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ourdisplay = XOpenDisplay(NULL);
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CHECK(ourdisplay==NULL, USER,
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"cannot open X-windows; DISPLAY variable set?");
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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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ourvinf = glXChooseVisual(ourdisplay, ourscreen, atlOK);
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CHECK(ourvinf==NULL, 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 ((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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tmGlobal = tmInit(mytmflags(), dpri, gamval);
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if (tmGlobal == NULL)
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error(SYSTEM, "not enough memory in dev_open");
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/* open window */
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ourwinattr.background_pixel = ourblack;
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ourwinattr.border_pixel = ourblack;
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ourwinattr.event_mask = ourmask;
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/* this is stupid */
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ourwinattr.colormap = XCreateColormap(ourdisplay, ourroot,
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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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CHECK(gwind==0, SYSTEM, "cannot create window");
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XStoreName(ourdisplay, gwind, id);
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/* set window manager hints */
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ourxwmhints.flags = InputHint|IconPixmapHint;
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ourxwmhints.input = True;
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ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay, gwind,
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(char *)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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glClearColor(0, 0, 0, 0);
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glFrontFace(GL_CCW);
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glDisable(GL_CULL_FACE);
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glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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glPixelStorei(GL_PACK_ALIGNMENT, 1);
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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/* figure out sensible view */
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pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) /
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DisplayWidth(ourdisplay, ourscreen);
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pheight = (double)DisplayHeightMM(ourdisplay, ourscreen) /
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DisplayHeight(ourdisplay, ourscreen);
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#ifdef STEREO
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pheight *= 2.;
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setstereobuf(STEREO_BUFFER_LEFT);
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#endif
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checkglerr("setting rendering parameters");
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odev.v = stdview;
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odev.v.type = VT_PER;
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viewflags = VWSTEADY; /* view starts static */
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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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if (!odInit(DisplayWidth(ourdisplay,ourscreen) *
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DisplayHeight(ourdisplay,ourscreen) / 3))
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error(SYSTEM, "insufficient memory for value storage");
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odev.name = id;
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odev.firstuse = 1; /* can't recycle samples */
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odev.ifd = ConnectionNumber(ourdisplay);
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}
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void
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dev_close(void) /* close our display and free resources */
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{
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#ifdef DOBJ
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dobj_cleanup();
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#endif
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freedepth();
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gmEndGeom();
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gmEndPortal();
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odDone();
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glXMakeCurrent(ourdisplay, None, NULL);
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glXDestroyContext(ourdisplay, gctx);
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XDestroyWindow(ourdisplay, gwind);
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gwind = 0;
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XCloseDisplay(ourdisplay);
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ourdisplay = NULL;
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tmDone(tmGlobal);
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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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| 308 |
void
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dev_clear(void) /* clear our representation */
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| 310 |
{
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viewflags |= VWCHANGE; /* pretend our view has changed */
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wipeclean(); /* clean off display and samples */
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dev_flush(); /* redraw geometry & get depth */
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rayqleft = 0; /* hold off update */
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}
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| 317 |
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int
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dev_view( /* assign new driver view */
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VIEW *nv
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| 321 |
)
|
| 322 |
{
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| 323 |
#ifdef STEREO
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double d;
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| 325 |
#endif
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| 326 |
if (nv->type != VT_PER || /* check view legality */
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| 327 |
nv->horiz > 160. || nv->vert > 160.) {
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| 328 |
error(COMMAND, "illegal view type/angle");
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| 329 |
nv->type = odev.v.type;
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| 330 |
nv->horiz = odev.v.horiz;
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| 331 |
nv->vert = odev.v.vert;
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| 332 |
return(0);
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| 333 |
}
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| 334 |
if (nv != &odev.v) {
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| 335 |
/* resize window? */
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| 336 |
if (!FABSEQ(nv->horiz,odev.v.horiz) ||
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| 337 |
!FABSEQ(nv->vert,odev.v.vert)) {
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| 338 |
int dw = DisplayWidth(ourdisplay,ourscreen);
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| 339 |
int dh = DisplayHeight(ourdisplay,ourscreen);
|
| 340 |
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| 341 |
dw -= 25; /* for window frame */
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| 342 |
dh -= 50;
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| 343 |
#ifdef STEREO
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| 344 |
dh /= 2;
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| 345 |
#endif
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| 346 |
odev.hres = 2.*VIEWDIST/pwidth *
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| 347 |
tan(PI/180./2.*nv->horiz);
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| 348 |
odev.vres = 2.*VIEWDIST/pheight *
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| 349 |
tan(PI/180./2.*nv->vert);
|
| 350 |
if (odev.hres > dw) {
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| 351 |
odev.vres = dw * odev.vres / odev.hres;
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| 352 |
odev.hres = dw;
|
| 353 |
}
|
| 354 |
if (odev.vres > dh) {
|
| 355 |
odev.hres = dh * odev.hres / odev.vres;
|
| 356 |
odev.vres = dh;
|
| 357 |
}
|
| 358 |
XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres);
|
| 359 |
dev_input(); /* get resize event */
|
| 360 |
}
|
| 361 |
odev.v = *nv; /* setview() already called */
|
| 362 |
viewflags |= VWCHANGE;
|
| 363 |
}
|
| 364 |
#ifdef STEREO
|
| 365 |
vwright = *nv;
|
| 366 |
d = eyesepdist / sqrt(nv->hn2);
|
| 367 |
VSUM(vwright.vp, nv->vp, nv->hvec, d);
|
| 368 |
/* setview(&vwright); -- Unnecessary */
|
| 369 |
#endif
|
| 370 |
wipeclean();
|
| 371 |
return(1);
|
| 372 |
}
|
| 373 |
|
| 374 |
|
| 375 |
void
|
| 376 |
dev_section( /* add octree for geometry rendering */
|
| 377 |
char *gfn,
|
| 378 |
char *pfn
|
| 379 |
)
|
| 380 |
{
|
| 381 |
if (gfn == NULL) {
|
| 382 |
gmEndGeom();
|
| 383 |
gmEndPortal();
|
| 384 |
wipeclean(); /* new geometry, so redraw it */
|
| 385 |
return;
|
| 386 |
}
|
| 387 |
if (access(gfn, R_OK) == 0)
|
| 388 |
gmNewGeom(gfn);
|
| 389 |
#ifdef DEBUG
|
| 390 |
else {
|
| 391 |
sprintf(errmsg, "cannot load octree \"%s\"", gfn);
|
| 392 |
error(WARNING, errmsg);
|
| 393 |
}
|
| 394 |
#endif
|
| 395 |
if (pfn != NULL)
|
| 396 |
gmNewPortal(pfn);
|
| 397 |
}
|
| 398 |
|
| 399 |
|
| 400 |
void
|
| 401 |
dev_auxcom( /* process an auxiliary command */
|
| 402 |
char *cmd,
|
| 403 |
char *args
|
| 404 |
)
|
| 405 |
{
|
| 406 |
#ifdef DOBJ
|
| 407 |
int vischange;
|
| 408 |
|
| 409 |
if ((vischange = dobj_command(cmd, args)) >= 0) {
|
| 410 |
if (vischange) {
|
| 411 |
imm_mode = beam_sync(1) > 0;
|
| 412 |
dev_clear();
|
| 413 |
}
|
| 414 |
return;
|
| 415 |
}
|
| 416 |
#endif
|
| 417 |
sprintf(errmsg, "%s: unknown command", cmd);
|
| 418 |
error(COMMAND, errmsg);
|
| 419 |
}
|
| 420 |
|
| 421 |
|
| 422 |
VIEW *
|
| 423 |
dev_auxview( /* return nth auxiliary view */
|
| 424 |
int n,
|
| 425 |
int hvres[2]
|
| 426 |
)
|
| 427 |
{
|
| 428 |
hvres[0] = odev.hres; hvres[1] = odev.vres;
|
| 429 |
if (n == 0)
|
| 430 |
return(&odev.v);
|
| 431 |
#ifdef STEREO
|
| 432 |
if (n == 1)
|
| 433 |
return(&vwright);
|
| 434 |
#endif
|
| 435 |
return(NULL);
|
| 436 |
}
|
| 437 |
|
| 438 |
|
| 439 |
int
|
| 440 |
dev_input(void) /* get X11 input */
|
| 441 |
{
|
| 442 |
inpresflags = 0;
|
| 443 |
|
| 444 |
do
|
| 445 |
getevent();
|
| 446 |
|
| 447 |
while (XPending(ourdisplay) > 0);
|
| 448 |
|
| 449 |
odev.inpready = 0;
|
| 450 |
|
| 451 |
return(inpresflags);
|
| 452 |
}
|
| 453 |
|
| 454 |
|
| 455 |
void
|
| 456 |
dev_value( /* add a pixel value to our texture */
|
| 457 |
COLR c,
|
| 458 |
FVECT d,
|
| 459 |
FVECT p
|
| 460 |
)
|
| 461 |
{
|
| 462 |
#ifdef DOBJ
|
| 463 |
if (dobj_lightsamp != NULL) { /* in light source sampling */
|
| 464 |
(*dobj_lightsamp)(c, d, p);
|
| 465 |
return;
|
| 466 |
}
|
| 467 |
#endif
|
| 468 |
odSample(c, d, p); /* add to display representation */
|
| 469 |
if (!--rayqleft)
|
| 470 |
dev_flush(); /* flush output */
|
| 471 |
}
|
| 472 |
|
| 473 |
|
| 474 |
int
|
| 475 |
dev_flush(void) /* flush output as appropriate */
|
| 476 |
{
|
| 477 |
int ndrawn;
|
| 478 |
|
| 479 |
if ((viewflags&(VWMAPPED|VWPERSP)) == (VWMAPPED|VWPERSP)) {
|
| 480 |
#ifdef STEREO
|
| 481 |
pushright(); /* draw right eye */
|
| 482 |
ndrawn = gmDrawGeom();
|
| 483 |
#ifdef DOBJ
|
| 484 |
ndrawn += dobj_render();
|
| 485 |
#endif
|
| 486 |
checkglerr("rendering right eye");
|
| 487 |
popright(); /* draw left eye */
|
| 488 |
#endif
|
| 489 |
ndrawn = gmDrawGeom();
|
| 490 |
#ifdef DOBJ
|
| 491 |
ndrawn += dobj_render();
|
| 492 |
#endif
|
| 493 |
glXSwapBuffers(ourdisplay, gwind);
|
| 494 |
checkglerr("rendering base view");
|
| 495 |
}
|
| 496 |
if ((viewflags&(VWMAPPED|VWSTEADY|VWPERSP|VWORTHO)) ==
|
| 497 |
(VWMAPPED|VWSTEADY|VWPERSP)) {
|
| 498 |
/* first time after steady */
|
| 499 |
if (ndrawn)
|
| 500 |
xferdepth(); /* transfer and clear depth */
|
| 501 |
setglortho(); /* set orthographic view */
|
| 502 |
|
| 503 |
}
|
| 504 |
if ((viewflags&(VWMAPPED|VWSTEADY|VWPERSP|VWORTHO)) ==
|
| 505 |
(VWMAPPED|VWSTEADY|VWORTHO)) {
|
| 506 |
/* else update cones */
|
| 507 |
#ifdef STEREO
|
| 508 |
pushright();
|
| 509 |
odUpdate(1); /* draw right eye */
|
| 510 |
popright();
|
| 511 |
#endif
|
| 512 |
odUpdate(0); /* draw left eye */
|
| 513 |
glFlush(); /* flush OpenGL */
|
| 514 |
}
|
| 515 |
rayqleft = RAYQLEN;
|
| 516 |
/* flush X11 and return # pending */
|
| 517 |
return(odev.inpready = XPending(ourdisplay));
|
| 518 |
}
|
| 519 |
|
| 520 |
|
| 521 |
static void
|
| 522 |
checkglerr( /* check for GL or GLU error */
|
| 523 |
char *where
|
| 524 |
)
|
| 525 |
{
|
| 526 |
GLenum errcode;
|
| 527 |
|
| 528 |
while ((errcode = glGetError()) != GL_NO_ERROR) {
|
| 529 |
sprintf(errmsg, "OpenGL error %s: %s",
|
| 530 |
where, gluErrorString(errcode));
|
| 531 |
error(WARNING, errmsg);
|
| 532 |
}
|
| 533 |
}
|
| 534 |
|
| 535 |
|
| 536 |
static void
|
| 537 |
xferdepth(void) /* load and clear depth buffer */
|
| 538 |
{
|
| 539 |
GLfloat *dbp;
|
| 540 |
GLubyte *pbuf;
|
| 541 |
|
| 542 |
if (depthbuffer == NULL) { /* allocate private depth buffer */
|
| 543 |
#ifdef STEREO
|
| 544 |
depthright = (GLfloat *)malloc(
|
| 545 |
odev.hres*odev.vres*sizeof(GLfloat));
|
| 546 |
#endif
|
| 547 |
depthbuffer = (GLfloat *)malloc(
|
| 548 |
odev.hres*odev.vres*sizeof(GLfloat));
|
| 549 |
CHECK(depthbuffer==NULL, SYSTEM, "out of memory in xferdepth");
|
| 550 |
}
|
| 551 |
/* allocate alpha buffer for portals */
|
| 552 |
if (gmPortals)
|
| 553 |
pbuf = (GLubyte *)malloc(odev.hres*odev.vres*sizeof(GLubyte));
|
| 554 |
else
|
| 555 |
pbuf = NULL;
|
| 556 |
#ifdef STEREO
|
| 557 |
pushright();
|
| 558 |
glReadPixels(0, 0, odev.hres, odev.vres,
|
| 559 |
GL_DEPTH_COMPONENT, GL_FLOAT, depthright);
|
| 560 |
if (pbuf != NULL) {
|
| 561 |
glClear(GL_COLOR_BUFFER_BIT);
|
| 562 |
gmDrawPortals(0xff, -1, -1, -1);
|
| 563 |
glReadPixels(0, 0, odev.hres, odev.vres,
|
| 564 |
GL_RED, GL_UNSIGNED_BYTE, pbuf);
|
| 565 |
}
|
| 566 |
for (dbp = depthright + odev.hres*odev.vres; dbp-- > depthright; )
|
| 567 |
if (pbuf != NULL && pbuf[dbp-depthright]&0x40)
|
| 568 |
*dbp = FHUGE;
|
| 569 |
else
|
| 570 |
*dbp = mapdepth(*dbp);
|
| 571 |
glClear(GL_DEPTH_BUFFER_BIT);
|
| 572 |
odDepthMap(1, depthright);
|
| 573 |
popright();
|
| 574 |
#endif
|
| 575 |
/* read back depth buffer */
|
| 576 |
glReadPixels(0, 0, odev.hres, odev.vres,
|
| 577 |
GL_DEPTH_COMPONENT, GL_FLOAT, depthbuffer);
|
| 578 |
if (pbuf != NULL) {
|
| 579 |
glClear(GL_COLOR_BUFFER_BIT); /* find portals */
|
| 580 |
gmDrawPortals(0xff, -1, -1, -1);
|
| 581 |
glReadPixels(0, 0, odev.hres, odev.vres,
|
| 582 |
GL_RED, GL_UNSIGNED_BYTE, pbuf);
|
| 583 |
#ifdef DEBUG
|
| 584 |
glXSwapBuffers(ourdisplay, gwind);
|
| 585 |
#endif
|
| 586 |
}
|
| 587 |
for (dbp = depthbuffer + odev.hres*odev.vres; dbp-- > depthbuffer; )
|
| 588 |
if (pbuf != NULL && pbuf[dbp-depthbuffer]&0x40)
|
| 589 |
*dbp = FHUGE;
|
| 590 |
else
|
| 591 |
*dbp = mapdepth(*dbp);
|
| 592 |
glClear(GL_DEPTH_BUFFER_BIT); /* clear system depth buffer */
|
| 593 |
odDepthMap(0, depthbuffer); /* transfer depth data */
|
| 594 |
if (pbuf != NULL)
|
| 595 |
free((void *)pbuf); /* free our portal buffer */
|
| 596 |
}
|
| 597 |
|
| 598 |
|
| 599 |
static void
|
| 600 |
freedepth(void) /* free recorded depth buffer */
|
| 601 |
{
|
| 602 |
if (depthbuffer == NULL)
|
| 603 |
return;
|
| 604 |
#ifdef STEREO
|
| 605 |
odDepthMap(1, NULL);
|
| 606 |
free((void *)depthright);
|
| 607 |
depthright = NULL;
|
| 608 |
#endif
|
| 609 |
odDepthMap(0, NULL);
|
| 610 |
free((void *)depthbuffer);
|
| 611 |
depthbuffer = NULL;
|
| 612 |
}
|
| 613 |
|
| 614 |
|
| 615 |
static double
|
| 616 |
getdistance( /* distance from fore plane along view ray */
|
| 617 |
int dx,
|
| 618 |
int dy,
|
| 619 |
FVECT direc
|
| 620 |
)
|
| 621 |
{
|
| 622 |
GLfloat gldepth;
|
| 623 |
double dist;
|
| 624 |
|
| 625 |
if ((dx<0) | (dx>=odev.hres) | (dy<0) | (dy>=odev.vres))
|
| 626 |
return(FHUGE);
|
| 627 |
if (depthbuffer != NULL)
|
| 628 |
dist = depthbuffer[dy*odev.hres + dx];
|
| 629 |
else {
|
| 630 |
glReadPixels(dx,dy, 1,1, GL_DEPTH_COMPONENT,
|
| 631 |
GL_FLOAT, &gldepth);
|
| 632 |
if (gldepth <= FTINY)
|
| 633 |
return (FHUGE); /* call failed */
|
| 634 |
dist = mapdepth(gldepth);
|
| 635 |
}
|
| 636 |
if (dist >= .99*FHUGE)
|
| 637 |
return(FHUGE);
|
| 638 |
return((dist-odev.v.vfore)/DOT(direc,odev.v.vdir));
|
| 639 |
}
|
| 640 |
|
| 641 |
|
| 642 |
#ifdef STEREO
|
| 643 |
static void
|
| 644 |
pushright(void) /* push on right view & buffer */
|
| 645 |
{
|
| 646 |
double d;
|
| 647 |
|
| 648 |
setstereobuf(STEREO_BUFFER_RIGHT);
|
| 649 |
if (viewflags & VWPERSP) {
|
| 650 |
glMatrixMode(GL_MODELVIEW);
|
| 651 |
glPushMatrix();
|
| 652 |
d = -eyesepdist / sqrt(odev.v.hn2);
|
| 653 |
glTranslated(d*odev.v.hvec[0], d*odev.v.hvec[1],
|
| 654 |
d*odev.v.hvec[2]);
|
| 655 |
checkglerr("setting right view");
|
| 656 |
}
|
| 657 |
}
|
| 658 |
|
| 659 |
|
| 660 |
static void
|
| 661 |
popright(void) /* pop off right view & buffer */
|
| 662 |
{
|
| 663 |
if (viewflags & VWPERSP) {
|
| 664 |
glMatrixMode(GL_MODELVIEW);
|
| 665 |
glPopMatrix();
|
| 666 |
}
|
| 667 |
setstereobuf(STEREO_BUFFER_LEFT);
|
| 668 |
}
|
| 669 |
#endif
|
| 670 |
|
| 671 |
|
| 672 |
static int
|
| 673 |
mytmflags(void) /* figure out tone mapping flags */
|
| 674 |
{
|
| 675 |
extern char *progname;
|
| 676 |
char *cp, *tail;
|
| 677 |
/* find basic name */
|
| 678 |
for (cp = tail = progname; *cp; cp++)
|
| 679 |
if (*cp == '/')
|
| 680 |
tail = cp+1;
|
| 681 |
for (cp = tail; *cp && *cp != '.'; cp++)
|
| 682 |
;
|
| 683 |
#ifdef DEBUG
|
| 684 |
if (cp > tail && cp[-1] == 'h')
|
| 685 |
return(TM_F_HUMAN);
|
| 686 |
else
|
| 687 |
return(TM_F_CAMERA);
|
| 688 |
#else
|
| 689 |
if (cp > tail && cp[-1] == 'h')
|
| 690 |
return(TM_F_HUMAN|TM_F_NOSTDERR);
|
| 691 |
else
|
| 692 |
return(TM_F_CAMERA|TM_F_NOSTDERR);
|
| 693 |
#endif
|
| 694 |
}
|
| 695 |
|
| 696 |
|
| 697 |
static void
|
| 698 |
getevent(void) /* get next event */
|
| 699 |
{
|
| 700 |
XNextEvent(ourdisplay, levptr(XEvent));
|
| 701 |
switch (levptr(XEvent)->type) {
|
| 702 |
case ConfigureNotify:
|
| 703 |
resizewindow(levptr(XConfigureEvent));
|
| 704 |
break;
|
| 705 |
case UnmapNotify:
|
| 706 |
viewflags &= ~VWMAPPED;
|
| 707 |
break;
|
| 708 |
case MapNotify:
|
| 709 |
odRemap(0);
|
| 710 |
viewflags |= VWMAPPED;
|
| 711 |
break;
|
| 712 |
case Expose:
|
| 713 |
fixwindow(levptr(XExposeEvent));
|
| 714 |
break;
|
| 715 |
case KeyPress:
|
| 716 |
getkey(levptr(XKeyPressedEvent));
|
| 717 |
break;
|
| 718 |
case ButtonPress:
|
| 719 |
if (FRAMESTATE(levptr(XButtonPressedEvent)->state))
|
| 720 |
getframe(levptr(XButtonPressedEvent));
|
| 721 |
else
|
| 722 |
switch (levptr(XButtonPressedEvent)->button) {
|
| 723 |
case Button4: /* wheel up */
|
| 724 |
case Button5: /* wheel down */
|
| 725 |
break;
|
| 726 |
default:
|
| 727 |
getmove(levptr(XButtonPressedEvent));
|
| 728 |
break;
|
| 729 |
}
|
| 730 |
break;
|
| 731 |
}
|
| 732 |
}
|
| 733 |
|
| 734 |
|
| 735 |
static void
|
| 736 |
draw3dline( /* draw 3d line in world coordinates */
|
| 737 |
FVECT wp[2]
|
| 738 |
)
|
| 739 |
{
|
| 740 |
glVertex3d(wp[0][0], wp[0][1], wp[0][2]);
|
| 741 |
glVertex3d(wp[1][0], wp[1][1], wp[1][2]);
|
| 742 |
}
|
| 743 |
|
| 744 |
|
| 745 |
static void
|
| 746 |
draw_grids( /* draw holodeck section grids */
|
| 747 |
int fore
|
| 748 |
)
|
| 749 |
{
|
| 750 |
glPushAttrib(GL_LIGHTING_BIT|GL_ENABLE_BIT);
|
| 751 |
glDisable(GL_LIGHTING);
|
| 752 |
if (fore)
|
| 753 |
glColor3ub(4, 250, 250);
|
| 754 |
else
|
| 755 |
glColor3ub(0, 0, 0);
|
| 756 |
glBegin(GL_LINES); /* draw each grid line */
|
| 757 |
gridlines(draw3dline);
|
| 758 |
glEnd();
|
| 759 |
checkglerr("drawing grid lines");
|
| 760 |
glPopAttrib();
|
| 761 |
}
|
| 762 |
|
| 763 |
|
| 764 |
static int
|
| 765 |
moveview( /* move our view */
|
| 766 |
int dx,
|
| 767 |
int dy,
|
| 768 |
int mov,
|
| 769 |
int orb
|
| 770 |
)
|
| 771 |
{
|
| 772 |
VIEW nv;
|
| 773 |
FVECT odir, v1, wip;
|
| 774 |
double d;
|
| 775 |
#ifdef DOBJ
|
| 776 |
double d1;
|
| 777 |
#endif
|
| 778 |
/* start with old view */
|
| 779 |
nv = odev.v;
|
| 780 |
/* orient our motion */
|
| 781 |
if (viewray(v1, odir, &odev.v,
|
| 782 |
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY)
|
| 783 |
return(0); /* outside view */
|
| 784 |
if (mov | orb) { /* moving relative to geometry */
|
| 785 |
d = getdistance(dx, dy, odir); /* distance from front plane */
|
| 786 |
#ifdef DOBJ
|
| 787 |
d1 = dobj_trace(NULL, v1, odir);
|
| 788 |
if (d1 < d)
|
| 789 |
d = d1;
|
| 790 |
#endif
|
| 791 |
if (d >= .99*FHUGE)
|
| 792 |
d = 0.5*(dev_zmax+dev_zmin); /* just guess */
|
| 793 |
VSUM(wip, v1, odir, d);
|
| 794 |
VSUB(odir, wip, odev.v.vp);
|
| 795 |
} else /* panning with constant viewpoint */
|
| 796 |
VCOPY(nv.vdir, odir);
|
| 797 |
if (orb && mov) { /* orbit left/right */
|
| 798 |
spinvector(odir, odir, nv.vup, d=MOVDEG*PI/180.*mov);
|
| 799 |
VSUM(nv.vp, wip, odir, -1.);
|
| 800 |
spinvector(nv.vdir, nv.vdir, nv.vup, d);
|
| 801 |
} else if (orb) { /* orbit up/down */
|
| 802 |
if (geodesic(odir, odir, nv.vup,
|
| 803 |
d=MOVDEG*PI/180.*orb, GEOD_RAD) == 0.0)
|
| 804 |
return(0);
|
| 805 |
VSUM(nv.vp, wip, odir, -1.);
|
| 806 |
geodesic(nv.vdir, nv.vdir, nv.vup, d, GEOD_RAD);
|
| 807 |
} else if (mov) { /* move forward/backward */
|
| 808 |
d = MOVPCT/100. * mov;
|
| 809 |
VSUM(nv.vp, nv.vp, odir, d);
|
| 810 |
}
|
| 811 |
if (!mov ^ !orb && viewflags&VWHEADLOCK) { /* restore height */
|
| 812 |
VSUM(v1, odev.v.vp, nv.vp, -1.);
|
| 813 |
d = DOT(v1, nv.vup);
|
| 814 |
VSUM(nv.vp, nv.vp, odev.v.vup, d);
|
| 815 |
}
|
| 816 |
if (setview(&nv) != NULL)
|
| 817 |
return(0); /* illegal view */
|
| 818 |
dev_view(&nv);
|
| 819 |
inpresflags |= DFL(DC_SETVIEW);
|
| 820 |
return(1);
|
| 821 |
}
|
| 822 |
|
| 823 |
|
| 824 |
static void
|
| 825 |
getframe( /* get focus frame */
|
| 826 |
XButtonPressedEvent *ebut
|
| 827 |
)
|
| 828 |
{
|
| 829 |
int startx = ebut->x, starty = ebut->y;
|
| 830 |
int endx, endy, midx, midy;
|
| 831 |
FVECT odir, v1;
|
| 832 |
double d;
|
| 833 |
#ifdef DOBJ
|
| 834 |
double d1;
|
| 835 |
#endif
|
| 836 |
/* get mouse drag */
|
| 837 |
XMaskEvent(ourdisplay, ButtonReleaseMask, levptr(XEvent));
|
| 838 |
endx = levptr(XButtonReleasedEvent)->x;
|
| 839 |
endy = levptr(XButtonReleasedEvent)->y;
|
| 840 |
midx = (startx + endx) >> 1;
|
| 841 |
midy = (starty + endy) >> 1;
|
| 842 |
/* set focus distance */
|
| 843 |
if (viewray(v1, odir, &odev.v,
|
| 844 |
(midx+.5)/odev.hres, (midy+.5)/odev.vres) < -FTINY)
|
| 845 |
return;
|
| 846 |
d = getdistance(midx, midy, odir); /* distance from front plane */
|
| 847 |
#ifdef DOBJ
|
| 848 |
d1 = dobj_trace(NULL, v1, odir);
|
| 849 |
if (d1 < d)
|
| 850 |
d = d1;
|
| 851 |
#endif
|
| 852 |
if (d < .99*FHUGE)
|
| 853 |
odev.v.vdist = d + sqrt(dist2(v1, odev.v.vp));
|
| 854 |
/* set frame for rendering */
|
| 855 |
if ((endx == startx) | (endy == starty))
|
| 856 |
return;
|
| 857 |
if (endx < startx) {int c = endx; endx = startx; startx = c;}
|
| 858 |
if (endy < starty) {int c = endy; endy = starty; starty = c;}
|
| 859 |
sprintf(odev_args, "%.3f %.3f %.3f %.3f",
|
| 860 |
(startx+.5)/odev.hres, 1.-(endy+.5)/odev.vres,
|
| 861 |
(endx+.5)/odev.hres, 1.-(starty+.5)/odev.vres);
|
| 862 |
inpresflags |= DFL(DC_FOCUS);
|
| 863 |
}
|
| 864 |
|
| 865 |
|
| 866 |
static void
|
| 867 |
waitabit(void) /* pause a moment */
|
| 868 |
{
|
| 869 |
struct timespec ts;
|
| 870 |
ts.tv_sec = 0;
|
| 871 |
ts.tv_nsec = 100000000L;
|
| 872 |
nanosleep(&ts, NULL);
|
| 873 |
}
|
| 874 |
|
| 875 |
|
| 876 |
static void
|
| 877 |
getmove( /* get view change */
|
| 878 |
XButtonPressedEvent *ebut
|
| 879 |
)
|
| 880 |
{
|
| 881 |
int movdir = MOVDIR(ebut->button);
|
| 882 |
int movorb = MOVORB(ebut->state);
|
| 883 |
int ndrawn;
|
| 884 |
Window rootw, childw;
|
| 885 |
int rootx, rooty, wx, wy;
|
| 886 |
unsigned int statemask;
|
| 887 |
|
| 888 |
XNoOp(ourdisplay); /* makes sure we're not idle */
|
| 889 |
|
| 890 |
viewflags &= ~VWSTEADY; /* flag moving view */
|
| 891 |
setglpersp(); /* start us off in perspective */
|
| 892 |
while (!XCheckMaskEvent(ourdisplay,
|
| 893 |
ButtonReleaseMask, levptr(XEvent))) {
|
| 894 |
/* pause so as not to move too fast */
|
| 895 |
waitabit();
|
| 896 |
/* get cursor position */
|
| 897 |
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw,
|
| 898 |
&rootx, &rooty, &wx, &wy, &statemask))
|
| 899 |
break; /* on another screen */
|
| 900 |
/* compute view motion */
|
| 901 |
if (!moveview(wx, odev.vres-1-wy, movdir, movorb)) {
|
| 902 |
sleep(1);
|
| 903 |
continue; /* cursor in bad place */
|
| 904 |
}
|
| 905 |
draw_grids(1); /* redraw grid */
|
| 906 |
#ifdef STEREO
|
| 907 |
pushright();
|
| 908 |
draw_grids(1);
|
| 909 |
ndrawn = gmDrawGeom();
|
| 910 |
#ifdef DOBJ
|
| 911 |
ndrawn += dobj_render();
|
| 912 |
#endif
|
| 913 |
popright();
|
| 914 |
#endif
|
| 915 |
/* redraw octrees */
|
| 916 |
ndrawn = gmDrawGeom();
|
| 917 |
#ifdef DOBJ
|
| 918 |
ndrawn += dobj_render(); /* redraw objects */
|
| 919 |
#endif
|
| 920 |
glXSwapBuffers(ourdisplay, gwind);
|
| 921 |
if (!ndrawn)
|
| 922 |
sleep(1); /* for reasonable interaction */
|
| 923 |
}
|
| 924 |
if (!(inpresflags & DFL(DC_SETVIEW))) { /* do final motion */
|
| 925 |
movdir = MOVDIR(levptr(XButtonReleasedEvent)->button);
|
| 926 |
wx = levptr(XButtonReleasedEvent)->x;
|
| 927 |
wy = levptr(XButtonReleasedEvent)->y;
|
| 928 |
moveview(wx, odev.vres-1-wy, movdir, movorb);
|
| 929 |
}
|
| 930 |
viewflags |= VWSTEADY; /* done goofing around */
|
| 931 |
}
|
| 932 |
|
| 933 |
|
| 934 |
static void
|
| 935 |
setglpersp(void) /* set perspective view in GL */
|
| 936 |
{
|
| 937 |
double d, xmin, xmax, ymin, ymax;
|
| 938 |
GLfloat vec[4];
|
| 939 |
double depthlim[2];
|
| 940 |
/* set depth limits */
|
| 941 |
gmDepthLimit(depthlim, odev.v.vp, odev.v.vdir);
|
| 942 |
if (depthlim[0] >= depthlim[1]) {
|
| 943 |
dev_zmin = 1.;
|
| 944 |
dev_zmax = 100.;
|
| 945 |
} else {
|
| 946 |
dev_zmin = 0.5*depthlim[0];
|
| 947 |
dev_zmax = 1.25*depthlim[1];
|
| 948 |
if (dev_zmin > dev_zmax/5.)
|
| 949 |
dev_zmin = dev_zmax/5.;
|
| 950 |
}
|
| 951 |
if (odev.v.vfore > FTINY)
|
| 952 |
dev_zmin = odev.v.vfore;
|
| 953 |
if (odev.v.vaft > FTINY)
|
| 954 |
dev_zmax = odev.v.vaft;
|
| 955 |
if (dev_zmin*500. < dev_zmax)
|
| 956 |
dev_zmin = dev_zmax/500.;
|
| 957 |
setzrat();
|
| 958 |
xmax = dev_zmin * tan(PI/180./2. * odev.v.horiz);
|
| 959 |
xmin = -xmax;
|
| 960 |
d = odev.v.hoff * (xmax - xmin);
|
| 961 |
xmin += d; xmax += d;
|
| 962 |
ymax = dev_zmin * tan(PI/180./2. * odev.v.vert);
|
| 963 |
ymin = -ymax;
|
| 964 |
d = odev.v.voff * (ymax - ymin);
|
| 965 |
ymin += d; ymax += d;
|
| 966 |
/* set view matrix */
|
| 967 |
glMatrixMode(GL_PROJECTION);
|
| 968 |
glLoadIdentity();
|
| 969 |
glFrustum(xmin, xmax, ymin, ymax, dev_zmin, dev_zmax);
|
| 970 |
gluLookAt(odev.v.vp[0], odev.v.vp[1], odev.v.vp[2],
|
| 971 |
odev.v.vp[0] + odev.v.vdir[0],
|
| 972 |
odev.v.vp[1] + odev.v.vdir[1],
|
| 973 |
odev.v.vp[2] + odev.v.vdir[2],
|
| 974 |
odev.v.vup[0], odev.v.vup[1], odev.v.vup[2]);
|
| 975 |
checkglerr("setting perspective view");
|
| 976 |
vec[0] = vec[1] = vec[2] = 0.; vec[3] = 1.;
|
| 977 |
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, vec);
|
| 978 |
vec[0] = -odev.v.vdir[0];
|
| 979 |
vec[1] = -odev.v.vdir[1];
|
| 980 |
vec[2] = -odev.v.vdir[2];
|
| 981 |
vec[3] = 0.;
|
| 982 |
glLightfv(GL_LIGHT0, GL_POSITION, vec);
|
| 983 |
vec[0] = vec[1] = vec[2] = .7; vec[3] = 1.;
|
| 984 |
glLightfv(GL_LIGHT0, GL_SPECULAR, vec);
|
| 985 |
glLightfv(GL_LIGHT0, GL_DIFFUSE, vec);
|
| 986 |
vec[0] = vec[1] = vec[2] = .3; vec[3] = 1.;
|
| 987 |
glLightfv(GL_LIGHT0, GL_AMBIENT, vec);
|
| 988 |
glEnable(GL_LIGHT0);
|
| 989 |
glEnable(GL_LIGHTING); /* light our GL objects */
|
| 990 |
glShadeModel(GL_SMOOTH);
|
| 991 |
viewflags &= ~VWORTHO;
|
| 992 |
viewflags |= VWPERSP;
|
| 993 |
}
|
| 994 |
|
| 995 |
|
| 996 |
static void
|
| 997 |
setglortho(void) /* set up orthographic view for cone drawing */
|
| 998 |
{
|
| 999 |
glDrawBuffer(GL_FRONT); /* use single-buffer mode */
|
| 1000 |
/* set view matrix */
|
| 1001 |
glMatrixMode(GL_PROJECTION);
|
| 1002 |
glLoadIdentity();
|
| 1003 |
glOrtho(0., (double)odev.hres, 0., (double)odev.vres,
|
| 1004 |
0.001*OMAXDEPTH, 1.001*(-OMAXDEPTH));
|
| 1005 |
checkglerr("setting orthographic view");
|
| 1006 |
glDisable(GL_LIGHTING); /* cones are constant color */
|
| 1007 |
glShadeModel(GL_FLAT);
|
| 1008 |
viewflags &= ~VWPERSP;
|
| 1009 |
viewflags |= VWORTHO;
|
| 1010 |
}
|
| 1011 |
|
| 1012 |
|
| 1013 |
static void
|
| 1014 |
wipeclean(void) /* prepare for redraw */
|
| 1015 |
{
|
| 1016 |
glDrawBuffer(GL_BACK); /* use double-buffer mode */
|
| 1017 |
glReadBuffer(GL_BACK);
|
| 1018 |
/* clear buffers */
|
| 1019 |
#ifdef STEREO
|
| 1020 |
setstereobuf(STEREO_BUFFER_RIGHT);
|
| 1021 |
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
|
| 1022 |
setstereobuf(STEREO_BUFFER_LEFT);
|
| 1023 |
#endif
|
| 1024 |
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
|
| 1025 |
freedepth();
|
| 1026 |
if ((viewflags&(VWCHANGE|VWSTEADY)) ==
|
| 1027 |
(VWCHANGE|VWSTEADY)) { /* clear samples if new */
|
| 1028 |
odClean();
|
| 1029 |
viewflags &= ~VWCHANGE; /* change noted */
|
| 1030 |
} else if (viewflags & VWSTEADY)
|
| 1031 |
odRedrawAll();
|
| 1032 |
setglpersp(); /* reset view & clipping planes */
|
| 1033 |
}
|
| 1034 |
|
| 1035 |
|
| 1036 |
static void
|
| 1037 |
getkey( /* get input key */
|
| 1038 |
XKeyPressedEvent *ekey
|
| 1039 |
)
|
| 1040 |
{
|
| 1041 |
Window rootw, childw;
|
| 1042 |
int rootx, rooty, wx, wy;
|
| 1043 |
unsigned int statemask;
|
| 1044 |
int n;
|
| 1045 |
char buf[8];
|
| 1046 |
|
| 1047 |
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL);
|
| 1048 |
if (n != 1)
|
| 1049 |
return;
|
| 1050 |
switch (buf[0]) {
|
| 1051 |
case 'h': /* turn on height motion lock */
|
| 1052 |
viewflags |= VWHEADLOCK;
|
| 1053 |
return;
|
| 1054 |
case 'H': /* turn off height motion lock */
|
| 1055 |
viewflags &= ~VWHEADLOCK;
|
| 1056 |
return;
|
| 1057 |
case 'l': /* retrieve last view */
|
| 1058 |
inpresflags |= DFL(DC_LASTVIEW);
|
| 1059 |
return;
|
| 1060 |
case 'p': /* pause computation */
|
| 1061 |
inpresflags |= DFL(DC_PAUSE);
|
| 1062 |
return;
|
| 1063 |
case 'v': /* spit out view */
|
| 1064 |
inpresflags |= DFL(DC_GETVIEW);
|
| 1065 |
return;
|
| 1066 |
case 'f': /* frame view position */
|
| 1067 |
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw,
|
| 1068 |
&rootx, &rooty, &wx, &wy, &statemask))
|
| 1069 |
return; /* on another screen */
|
| 1070 |
sprintf(odev_args, "%.4f %.4f", (wx+.5)/odev.hres,
|
| 1071 |
1.-(wy+.5)/odev.vres);
|
| 1072 |
inpresflags |= DFL(DC_FOCUS);
|
| 1073 |
return;
|
| 1074 |
case 'F': /* unfocus */
|
| 1075 |
odev_args[0] = '\0';
|
| 1076 |
inpresflags |= DFL(DC_FOCUS);
|
| 1077 |
return;
|
| 1078 |
case '\n':
|
| 1079 |
case '\r': /* resume computation */
|
| 1080 |
inpresflags |= DFL(DC_RESUME);
|
| 1081 |
return;
|
| 1082 |
case CTRL('R'): /* redraw screen */
|
| 1083 |
odRemap(0); /* new tone mapping */
|
| 1084 |
glClear(GL_DEPTH_BUFFER_BIT);
|
| 1085 |
#ifdef STEREO
|
| 1086 |
setstereobuf(STEREO_BUFFER_RIGHT);
|
| 1087 |
glClear(GL_DEPTH_BUFFER_BIT);
|
| 1088 |
setstereobuf(STEREO_BUFFER_LEFT);
|
| 1089 |
#endif
|
| 1090 |
return;
|
| 1091 |
case CTRL('L'): /* refresh from server */
|
| 1092 |
if (inpresflags & DFL(DC_REDRAW))
|
| 1093 |
return; /* already called */
|
| 1094 |
XRaiseWindow(ourdisplay, gwind);
|
| 1095 |
XFlush(ourdisplay); /* raise up window */
|
| 1096 |
sleep(1); /* wait for restacking */
|
| 1097 |
dev_clear(); /* clear buffer and samples */
|
| 1098 |
odRemap(1); /* start fresh histogram */
|
| 1099 |
inpresflags |= DFL(DC_REDRAW); /* resend values from server */
|
| 1100 |
return;
|
| 1101 |
case 'K': /* kill rtrace process(es) */
|
| 1102 |
inpresflags |= DFL(DC_KILL);
|
| 1103 |
break;
|
| 1104 |
case 'R': /* restart rtrace */
|
| 1105 |
inpresflags |= DFL(DC_RESTART);
|
| 1106 |
break;
|
| 1107 |
case 'C': /* clobber holodeck */
|
| 1108 |
inpresflags |= DFL(DC_CLOBBER);
|
| 1109 |
break;
|
| 1110 |
case 'q': /* quit the program */
|
| 1111 |
inpresflags |= DFL(DC_QUIT);
|
| 1112 |
return;
|
| 1113 |
default:
|
| 1114 |
XBell(ourdisplay, 0);
|
| 1115 |
return;
|
| 1116 |
}
|
| 1117 |
}
|
| 1118 |
|
| 1119 |
|
| 1120 |
static void
|
| 1121 |
fixwindow( /* repair damage to window */
|
| 1122 |
XExposeEvent *eexp
|
| 1123 |
)
|
| 1124 |
{
|
| 1125 |
int xmin, ymin, xmax, ymax;
|
| 1126 |
|
| 1127 |
if ((odev.hres == 0) | (odev.vres == 0)) { /* first exposure */
|
| 1128 |
resizewindow((XConfigureEvent *)eexp);
|
| 1129 |
return;
|
| 1130 |
}
|
| 1131 |
xmin = eexp->x; xmax = eexp->x + eexp->width;
|
| 1132 |
ymin = odev.vres - eexp->y - eexp->height; ymax = odev.vres - eexp->y;
|
| 1133 |
|
| 1134 |
if (xmin <= 0 && xmax >= odev.hres-1 &&
|
| 1135 |
ymin <= 0 && ymax >= odev.vres) {
|
| 1136 |
DCHECK(eexp->count, WARNING, "multiple clear in fixwindow");
|
| 1137 |
wipeclean(); /* make sure we're go */
|
| 1138 |
return;
|
| 1139 |
}
|
| 1140 |
/* clear portion of depth */
|
| 1141 |
glPushAttrib(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
|
| 1142 |
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
| 1143 |
glDepthFunc(GL_ALWAYS);
|
| 1144 |
glBegin(GL_POLYGON);
|
| 1145 |
glVertex3i(xmin, ymin, OMAXDEPTH);
|
| 1146 |
glVertex3i(xmax, ymin, OMAXDEPTH);
|
| 1147 |
glVertex3i(xmax, ymax, OMAXDEPTH);
|
| 1148 |
glVertex3i(xmin, ymax, OMAXDEPTH);
|
| 1149 |
glEnd();
|
| 1150 |
#ifdef STEREO
|
| 1151 |
setstereobuf(STEREO_BUFFER_RIGHT);
|
| 1152 |
glBegin(GL_POLYGON);
|
| 1153 |
glVertex3i(xmin, ymin, OMAXDEPTH);
|
| 1154 |
glVertex3i(xmax, ymin, OMAXDEPTH);
|
| 1155 |
glVertex3i(xmax, ymax, OMAXDEPTH);
|
| 1156 |
glVertex3i(xmin, ymax, OMAXDEPTH);
|
| 1157 |
glEnd();
|
| 1158 |
odRedraw(1, xmin, ymin, xmax, ymax);
|
| 1159 |
setstereobuf(STEREO_BUFFER_LEFT);
|
| 1160 |
#endif
|
| 1161 |
glPopAttrib();
|
| 1162 |
odRedraw(0, xmin, ymin, xmax, ymax);
|
| 1163 |
}
|
| 1164 |
|
| 1165 |
|
| 1166 |
static void
|
| 1167 |
resizewindow( /* resize window */
|
| 1168 |
XConfigureEvent *ersz
|
| 1169 |
)
|
| 1170 |
{
|
| 1171 |
glViewport(0, 0, ersz->width, ersz->height);
|
| 1172 |
|
| 1173 |
if (ersz->width == odev.hres && ersz->height == odev.vres)
|
| 1174 |
return;
|
| 1175 |
|
| 1176 |
odev.hres = ersz->width;
|
| 1177 |
odev.vres = ersz->height;
|
| 1178 |
|
| 1179 |
odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres);
|
| 1180 |
odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres);
|
| 1181 |
|
| 1182 |
inpresflags |= DFL(DC_SETVIEW);
|
| 1183 |
viewflags |= VWCHANGE;
|
| 1184 |
}
|
