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#ifndef lint
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| 2 |
static const char RCSid[] = "$Id: rhd_x11.c,v 3.46 2018/10/05 19:19:16 greg Exp $";
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#endif
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/*
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| 5 |
* X11 driver for holodeck display.
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| 6 |
* Based on rview driver.
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*/
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| 9 |
#include <stdlib.h>
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| 10 |
#include <stdio.h>
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| 11 |
#include <X11/Xlib.h>
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| 12 |
#include <X11/cursorfont.h>
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#include <X11/Xutil.h>
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#include <time.h>
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#include "platform.h"
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#include "rtmath.h"
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#include "rterror.h"
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#include "plocate.h"
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#include "rhdisp.h"
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#include "rhd_qtree.h"
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| 22 |
#include "x11icon.h"
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| 24 |
#ifndef RAYQLEN
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| 25 |
#define RAYQLEN 50000 /* max. rays to queue before flush */
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#endif
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#define GAMMA 2.2 /* 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 MINWIDTH 480 /* minimum graphics window width */
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#define MINHEIGHT 400 /* minimum graphics window height */
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#define VIEWDIST 356 /* assumed viewing distance (mm) */
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#define BORWIDTH 5 /* border width */
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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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| 49 |
#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 XEvent currentevent; /* current event */
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static int ncolors = 0; /* color table size */
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static int mapped = 0; /* window is mapped? */
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static unsigned long *pixval = NULL; /* allocated pixels */
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static unsigned long ourblack=0, ourwhite=1;
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static Display *ourdisplay = NULL; /* our display */
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static XVisualInfo ourvinfo; /* our visual information */
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static Window gwind = 0; /* our graphics window */
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static GC ourgc = 0; /* our graphics context for drawing */
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static Colormap ourmap = 0; /* our color map */
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static double pwidth, pheight; /* pixel dimensions (mm) */
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static int inpresflags; /* input result flags */
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static int headlocked = 0; /* lock vertical motion */
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static int mytmflags(void);
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static void xnewcolr(int ndx, int r, int g, int b);
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static int getpixels(void);
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static void freepixels(void);
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static unsigned long true_pixel(uby8 rgb[3]);
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static void getevent(void);
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static int ilclip(int dp[2][2], FVECT wp[2]);
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static void draw3dline(FVECT wp[2]);
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static void draw_grids(void);
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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 waitabit(void);
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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 int
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mytmflags(void) /* figure out tone mapping flags */
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{
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extern char *progname;
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char *cp, *tail;
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/* find basic name */
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for (cp = tail = progname; *cp; cp++)
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if (*cp == '/')
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tail = cp+1;
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for (cp = tail; *cp && *cp != '.'; cp++)
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;
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if (cp-tail == 3 && !strncmp(tail, "x11", 3))
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return(TM_F_CAMERA|TM_F_NOSTDERR);
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if (cp-tail == 4 && !strncmp(tail, "x11h", 4))
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return(TM_F_HUMAN|TM_F_NOSTDERR);
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error(USER, "illegal driver name");
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return 0; /* pro forma return */
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}
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void
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dev_open( /* initialize X11 driver */
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char *id
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)
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{
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static RGBPRIMS myprims = STDPRIMS;
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char *ev;
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double gamval = GAMMA;
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RGBPRIMP dpri = stdprims;
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int nplanes;
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XSetWindowAttributes ourwinattr;
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XWMHints ourxwmhints;
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XSizeHints oursizhints;
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/* set quadtree globals */
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qtMinNodesiz = 2;
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/* open display server */
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ourdisplay = XOpenDisplay(NULL);
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if (ourdisplay == NULL)
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error(USER, "cannot open X-windows; DISPLAY variable set?\n");
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/* find a usable visual */
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nplanes = DisplayPlanes(ourdisplay, ourscreen);
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if (XMatchVisualInfo(ourdisplay,ourscreen,
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nplanes>12?nplanes:24,TrueColor,&ourvinfo) ||
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XMatchVisualInfo(ourdisplay,ourscreen,
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nplanes>12?nplanes:24,DirectColor,&ourvinfo)) {
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ourblack = 0;
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ourwhite = ourvinfo.red_mask |
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ourvinfo.green_mask |
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ourvinfo.blue_mask ;
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} else {
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if (nplanes < 4)
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error(INTERNAL, "not enough colors\n");
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if (!XMatchVisualInfo(ourdisplay,ourscreen,
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nplanes,PseudoColor,&ourvinfo) &&
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!XMatchVisualInfo(ourdisplay,ourscreen,
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nplanes,GrayScale,&ourvinfo))
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error(INTERNAL, "unsupported visual type\n");
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ourblack = BlackPixel(ourdisplay,ourscreen);
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ourwhite = WhitePixel(ourdisplay,ourscreen);
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}
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/* set gamma and tone mapping */
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if ((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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ourvinfo.visual, AllocNone);
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gwind = XCreateWindow(ourdisplay, ourroot, 0, 0,
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DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH,
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DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH,
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BORWIDTH, ourvinfo.depth, InputOutput, ourvinfo.visual,
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CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &ourwinattr);
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if (gwind == 0)
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error(SYSTEM, "cannot create window\n");
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XStoreName(ourdisplay, gwind, id);
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/* get graphics context */
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ourgc = XCreateGC(ourdisplay, gwind, 0, NULL);
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/* set window manager hints */
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ourxwmhints.flags = InputHint|IconPixmapHint;
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ourxwmhints.input = True;
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ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay, 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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oursizhints.min_height = MINHEIGHT;
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oursizhints.flags = PMinSize;
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XSetNormalHints(ourdisplay, gwind, &oursizhints);
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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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odev.v = stdview;
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odev.v.type = VT_PER;
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/* map the window and get its size */
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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 leaf storage");
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odev.name = id;
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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 */
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{
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freepixels();
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XFreeGC(ourdisplay, ourgc);
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XDestroyWindow(ourdisplay, gwind);
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gwind = 0;
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ourgc = 0;
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XCloseDisplay(ourdisplay);
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ourdisplay = NULL;
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qtFreeLeaves();
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tmDone(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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void
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dev_clear(void) /* clear our quadtree */
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{
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qtCompost(100);
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if (ncolors > 0)
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new_ctab(ncolors);
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rayqleft = 0; /* hold off update */
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}
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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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| 247 |
)
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{
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| 249 |
if (nv->type == VT_PAR || /* check view legality */
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| 250 |
nv->horiz > 160. || nv->vert > 160.) {
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| 251 |
error(COMMAND, "illegal view type/angle");
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| 252 |
nv->type = VT_PER;
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nv->horiz = odev.v.horiz;
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| 254 |
nv->vert = odev.v.vert;
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return(0);
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}
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| 257 |
if (nv->vfore > FTINY) {
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| 258 |
error(COMMAND, "cannot handle fore clipping");
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| 259 |
nv->vfore = 0.;
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| 260 |
return(0);
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}
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| 262 |
if (nv != &odev.v) {
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| 263 |
if (!FABSEQ(nv->horiz,odev.v.horiz) || /* resize window? */
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| 264 |
!FABSEQ(nv->vert,odev.v.vert)) {
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| 265 |
int dw = DisplayWidth(ourdisplay,ourscreen);
|
| 266 |
int dh = DisplayHeight(ourdisplay,ourscreen);
|
| 267 |
|
| 268 |
dw -= 25; /* for window frame */
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| 269 |
dh -= 50;
|
| 270 |
odev.hres = 2.*VIEWDIST/pwidth *
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| 271 |
tan(PI/180./2.*nv->horiz);
|
| 272 |
odev.vres = 2.*VIEWDIST/pheight *
|
| 273 |
tan(PI/180./2.*nv->vert);
|
| 274 |
if (odev.hres > dw) {
|
| 275 |
odev.vres = dw * odev.vres / odev.hres;
|
| 276 |
odev.hres = dw;
|
| 277 |
}
|
| 278 |
if (odev.vres > dh) {
|
| 279 |
odev.hres = dh * odev.hres / odev.vres;
|
| 280 |
odev.vres = dh;
|
| 281 |
}
|
| 282 |
XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres);
|
| 283 |
dev_input(); /* wait for resize event */
|
| 284 |
}
|
| 285 |
odev.v = *nv;
|
| 286 |
}
|
| 287 |
qtReplant();
|
| 288 |
return(1);
|
| 289 |
}
|
| 290 |
|
| 291 |
|
| 292 |
void
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| 293 |
dev_section( /* add octree for geometry rendering */
|
| 294 |
char *gfn,
|
| 295 |
char *pfn
|
| 296 |
)
|
| 297 |
{
|
| 298 |
/* unimplemented */
|
| 299 |
}
|
| 300 |
|
| 301 |
|
| 302 |
void
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| 303 |
dev_auxcom( /* process an auxiliary command */
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| 304 |
char *cmd,
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| 305 |
char *args
|
| 306 |
)
|
| 307 |
{
|
| 308 |
sprintf(errmsg, "%s: unknown command", cmd);
|
| 309 |
error(COMMAND, errmsg);
|
| 310 |
}
|
| 311 |
|
| 312 |
|
| 313 |
VIEW *
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| 314 |
dev_auxview( /* return nth auxiliary view */
|
| 315 |
int n,
|
| 316 |
int hvres[2]
|
| 317 |
)
|
| 318 |
{
|
| 319 |
if (n)
|
| 320 |
return(NULL);
|
| 321 |
hvres[0] = odev.hres; hvres[1] = odev.vres;
|
| 322 |
return(&odev.v);
|
| 323 |
}
|
| 324 |
|
| 325 |
|
| 326 |
int
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| 327 |
dev_input(void) /* get X11 input */
|
| 328 |
{
|
| 329 |
inpresflags = 0;
|
| 330 |
|
| 331 |
do
|
| 332 |
getevent();
|
| 333 |
|
| 334 |
while (XPending(ourdisplay) > 0);
|
| 335 |
|
| 336 |
odev.inpready = 0;
|
| 337 |
|
| 338 |
return(inpresflags);
|
| 339 |
}
|
| 340 |
|
| 341 |
|
| 342 |
void
|
| 343 |
dev_paintr( /* fill a rectangle */
|
| 344 |
uby8 rgb[3],
|
| 345 |
int xmin,
|
| 346 |
int ymin,
|
| 347 |
int xmax,
|
| 348 |
int ymax
|
| 349 |
)
|
| 350 |
{
|
| 351 |
unsigned long pixel;
|
| 352 |
|
| 353 |
if (!mapped)
|
| 354 |
return;
|
| 355 |
if (ncolors > 0)
|
| 356 |
pixel = pixval[get_pixel(rgb, xnewcolr)];
|
| 357 |
else
|
| 358 |
pixel = true_pixel(rgb);
|
| 359 |
XSetForeground(ourdisplay, ourgc, pixel);
|
| 360 |
XFillRectangle(ourdisplay, gwind,
|
| 361 |
ourgc, xmin, odev.vres-ymax, xmax-xmin, ymax-ymin);
|
| 362 |
}
|
| 363 |
|
| 364 |
|
| 365 |
int
|
| 366 |
dev_flush(void) /* flush output */
|
| 367 |
{
|
| 368 |
qtUpdate();
|
| 369 |
rayqleft = RAYQLEN;
|
| 370 |
return(odev.inpready = XPending(ourdisplay));
|
| 371 |
}
|
| 372 |
|
| 373 |
|
| 374 |
static void
|
| 375 |
xnewcolr( /* enter a color into hardware table */
|
| 376 |
int ndx,
|
| 377 |
int r,
|
| 378 |
int g,
|
| 379 |
int b
|
| 380 |
)
|
| 381 |
{
|
| 382 |
XColor xcolor;
|
| 383 |
|
| 384 |
xcolor.pixel = pixval[ndx];
|
| 385 |
xcolor.red = r << 8;
|
| 386 |
xcolor.green = g << 8;
|
| 387 |
xcolor.blue = b << 8;
|
| 388 |
xcolor.flags = DoRed|DoGreen|DoBlue;
|
| 389 |
|
| 390 |
XStoreColor(ourdisplay, ourmap, &xcolor);
|
| 391 |
}
|
| 392 |
|
| 393 |
|
| 394 |
static int
|
| 395 |
getpixels(void) /* get the color map */
|
| 396 |
{
|
| 397 |
XColor thiscolor;
|
| 398 |
int i, j;
|
| 399 |
|
| 400 |
if (ncolors > 0)
|
| 401 |
return(ncolors);
|
| 402 |
if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) {
|
| 403 |
ourmap = DefaultColormap(ourdisplay,ourscreen);
|
| 404 |
goto loop;
|
| 405 |
}
|
| 406 |
newmap:
|
| 407 |
ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone);
|
| 408 |
loop:
|
| 409 |
for (ncolors = ourvinfo.colormap_size;
|
| 410 |
ncolors > ourvinfo.colormap_size/3;
|
| 411 |
ncolors = ncolors*.937) {
|
| 412 |
pixval = (unsigned long *)malloc(ncolors*sizeof(unsigned long));
|
| 413 |
if (pixval == NULL)
|
| 414 |
return(ncolors = 0);
|
| 415 |
if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,pixval,ncolors))
|
| 416 |
break;
|
| 417 |
free((void *)pixval);
|
| 418 |
pixval = NULL;
|
| 419 |
}
|
| 420 |
if (pixval == NULL) {
|
| 421 |
if (ourmap == DefaultColormap(ourdisplay,ourscreen))
|
| 422 |
goto newmap; /* try it with our map */
|
| 423 |
else
|
| 424 |
return(ncolors = 0); /* failed */
|
| 425 |
}
|
| 426 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen))
|
| 427 |
for (i = 0; i < ncolors; i++) { /* reset black and white */
|
| 428 |
if (pixval[i] != ourblack && pixval[i] != ourwhite)
|
| 429 |
continue;
|
| 430 |
thiscolor.pixel = pixval[i];
|
| 431 |
thiscolor.flags = DoRed|DoGreen|DoBlue;
|
| 432 |
XQueryColor(ourdisplay,
|
| 433 |
DefaultColormap(ourdisplay,ourscreen),
|
| 434 |
&thiscolor);
|
| 435 |
XStoreColor(ourdisplay, ourmap, &thiscolor);
|
| 436 |
for (j = i; j+1 < ncolors; j++)
|
| 437 |
pixval[j] = pixval[j+1];
|
| 438 |
ncolors--;
|
| 439 |
i--;
|
| 440 |
}
|
| 441 |
XSetWindowColormap(ourdisplay, gwind, ourmap);
|
| 442 |
return(ncolors);
|
| 443 |
}
|
| 444 |
|
| 445 |
|
| 446 |
static void
|
| 447 |
freepixels(void) /* free our pixels */
|
| 448 |
{
|
| 449 |
if (ncolors == 0)
|
| 450 |
return;
|
| 451 |
XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L);
|
| 452 |
free((void *)pixval);
|
| 453 |
pixval = NULL;
|
| 454 |
ncolors = 0;
|
| 455 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen))
|
| 456 |
XFreeColormap(ourdisplay, ourmap);
|
| 457 |
ourmap = 0;
|
| 458 |
}
|
| 459 |
|
| 460 |
|
| 461 |
static unsigned long
|
| 462 |
true_pixel( /* return true pixel value for color */
|
| 463 |
uby8 rgb[3]
|
| 464 |
)
|
| 465 |
{
|
| 466 |
unsigned long rval;
|
| 467 |
|
| 468 |
rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask;
|
| 469 |
rval |= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask;
|
| 470 |
rval |= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask;
|
| 471 |
return(rval);
|
| 472 |
}
|
| 473 |
|
| 474 |
|
| 475 |
static void
|
| 476 |
getevent(void) /* get next event */
|
| 477 |
{
|
| 478 |
XNextEvent(ourdisplay, levptr(XEvent));
|
| 479 |
switch (levptr(XEvent)->type) {
|
| 480 |
case ConfigureNotify:
|
| 481 |
resizewindow(levptr(XConfigureEvent));
|
| 482 |
break;
|
| 483 |
case UnmapNotify:
|
| 484 |
mapped = 0;
|
| 485 |
freepixels();
|
| 486 |
break;
|
| 487 |
case MapNotify:
|
| 488 |
if (ourvinfo.class == PseudoColor ||
|
| 489 |
ourvinfo.class == GrayScale) {
|
| 490 |
if (getpixels() == 0)
|
| 491 |
error(SYSTEM, "cannot allocate colors\n");
|
| 492 |
new_ctab(ncolors);
|
| 493 |
}
|
| 494 |
mapped = 1;
|
| 495 |
break;
|
| 496 |
case Expose:
|
| 497 |
fixwindow(levptr(XExposeEvent));
|
| 498 |
break;
|
| 499 |
case KeyPress:
|
| 500 |
getkey(levptr(XKeyPressedEvent));
|
| 501 |
break;
|
| 502 |
case ButtonPress:
|
| 503 |
if (FRAMESTATE(levptr(XButtonPressedEvent)->state))
|
| 504 |
getframe(levptr(XButtonPressedEvent));
|
| 505 |
else
|
| 506 |
switch (levptr(XButtonPressedEvent)->button) {
|
| 507 |
case Button4: /* wheel up */
|
| 508 |
case Button5: /* wheel down */
|
| 509 |
break;
|
| 510 |
default:
|
| 511 |
getmove(levptr(XButtonPressedEvent));
|
| 512 |
break;
|
| 513 |
}
|
| 514 |
break;
|
| 515 |
}
|
| 516 |
}
|
| 517 |
|
| 518 |
|
| 519 |
static int
|
| 520 |
ilclip( /* clip world coordinates to device */
|
| 521 |
int dp[2][2],
|
| 522 |
FVECT wp[2]
|
| 523 |
)
|
| 524 |
{
|
| 525 |
static FVECT vmin = {0.,0.,0.}, vmax = {1.-FTINY,1.-FTINY,FHUGE};
|
| 526 |
FVECT wpc[2], ip[2];
|
| 527 |
double d, d0, d1;
|
| 528 |
/* check for points behind view */
|
| 529 |
d = DOT(odev.v.vp, odev.v.vdir);
|
| 530 |
d0 = DOT(wp[0], odev.v.vdir) - d;
|
| 531 |
d1 = DOT(wp[1], odev.v.vdir) - d;
|
| 532 |
/* work on copy of world points */
|
| 533 |
if (d0 <= d1) {
|
| 534 |
VCOPY(wpc[0], wp[0]); VCOPY(wpc[1], wp[1]);
|
| 535 |
} else {
|
| 536 |
d = d0; d0 = d1; d1 = d;
|
| 537 |
VCOPY(wpc[1], wp[0]); VCOPY(wpc[0], wp[1]);
|
| 538 |
}
|
| 539 |
if (d0 <= FTINY) {
|
| 540 |
if (d1 <= FTINY) return(0);
|
| 541 |
VSUB(wpc[0], wpc[0], wpc[1]);
|
| 542 |
d = .99*d1/(d1-d0);
|
| 543 |
VSUM(wpc[0], wpc[1], wpc[0], d);
|
| 544 |
}
|
| 545 |
/* get view coordinates and clip to window */
|
| 546 |
viewloc(ip[0], &odev.v, wpc[0]);
|
| 547 |
viewloc(ip[1], &odev.v, wpc[1]);
|
| 548 |
if (!clip(ip[0], ip[1], vmin, vmax))
|
| 549 |
return(0);
|
| 550 |
dp[0][0] = ip[0][0]*odev.hres;
|
| 551 |
dp[0][1] = ip[0][1]*odev.vres;
|
| 552 |
dp[1][0] = ip[1][0]*odev.hres;
|
| 553 |
dp[1][1] = ip[1][1]*odev.vres;
|
| 554 |
return(1);
|
| 555 |
}
|
| 556 |
|
| 557 |
|
| 558 |
static void
|
| 559 |
draw3dline( /* draw 3d line in world coordinates */
|
| 560 |
FVECT wp[2]
|
| 561 |
)
|
| 562 |
{
|
| 563 |
int dp[2][2];
|
| 564 |
|
| 565 |
if (!ilclip(dp, wp))
|
| 566 |
return;
|
| 567 |
XDrawLine(ourdisplay, gwind, ourgc,
|
| 568 |
dp[0][0], odev.vres-1 - dp[0][1],
|
| 569 |
dp[1][0], odev.vres-1 - dp[1][1]);
|
| 570 |
}
|
| 571 |
|
| 572 |
|
| 573 |
static void
|
| 574 |
draw_grids(void) /* draw holodeck section grids */
|
| 575 |
{
|
| 576 |
static uby8 gridrgb[3] = {0x0, 0xff, 0xff};
|
| 577 |
unsigned long pixel;
|
| 578 |
|
| 579 |
if (ncolors > 0)
|
| 580 |
pixel = pixval[get_pixel(gridrgb, xnewcolr)];
|
| 581 |
else
|
| 582 |
pixel = true_pixel(gridrgb);
|
| 583 |
XSetForeground(ourdisplay, ourgc, pixel);
|
| 584 |
/* draw each grid line */
|
| 585 |
gridlines(draw3dline);
|
| 586 |
}
|
| 587 |
|
| 588 |
|
| 589 |
static int
|
| 590 |
moveview( /* move our view */
|
| 591 |
int dx,
|
| 592 |
int dy,
|
| 593 |
int mov,
|
| 594 |
int orb
|
| 595 |
)
|
| 596 |
{
|
| 597 |
VIEW nv;
|
| 598 |
FVECT odir, v1;
|
| 599 |
double d;
|
| 600 |
int li;
|
| 601 |
/* start with old view */
|
| 602 |
nv = odev.v;
|
| 603 |
/* change view direction */
|
| 604 |
if (mov | orb) {
|
| 605 |
if ((li = qtFindLeaf(dx, dy)) < 0)
|
| 606 |
return(0); /* not on window */
|
| 607 |
VSUM(odir, qtL.wp[li], nv.vp, -1.);
|
| 608 |
} else {
|
| 609 |
if (viewray(nv.vp, nv.vdir, &odev.v,
|
| 610 |
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY)
|
| 611 |
return(0); /* outside view */
|
| 612 |
}
|
| 613 |
if (orb && mov) { /* orbit left/right */
|
| 614 |
spinvector(odir, odir, nv.vup, d=MOVDEG*PI/180.*mov);
|
| 615 |
VSUM(nv.vp, qtL.wp[li], odir, -1.);
|
| 616 |
spinvector(nv.vdir, nv.vdir, nv.vup, d);
|
| 617 |
} else if (orb) { /* orbit up/down */
|
| 618 |
if (geodesic(odir, odir, nv.vup,
|
| 619 |
d=MOVDEG*PI/180.*orb, GEOD_RAD) == 0.0)
|
| 620 |
return(0);
|
| 621 |
VSUM(nv.vp, qtL.wp[li], odir, -1.);
|
| 622 |
geodesic(nv.vdir, nv.vdir, nv.vup, d, GEOD_RAD);
|
| 623 |
} else if (mov) { /* move forward/backward */
|
| 624 |
d = MOVPCT/100. * mov;
|
| 625 |
VSUM(nv.vp, nv.vp, odir, d);
|
| 626 |
}
|
| 627 |
if (!mov ^ !orb && headlocked) { /* restore head height */
|
| 628 |
VSUM(v1, odev.v.vp, nv.vp, -1.);
|
| 629 |
d = DOT(v1, odev.v.vup);
|
| 630 |
VSUM(nv.vp, nv.vp, odev.v.vup, d);
|
| 631 |
}
|
| 632 |
if (setview(&nv) != NULL)
|
| 633 |
return(0); /* illegal view */
|
| 634 |
dev_view(&nv);
|
| 635 |
inpresflags |= DFL(DC_SETVIEW);
|
| 636 |
return(1);
|
| 637 |
}
|
| 638 |
|
| 639 |
|
| 640 |
static void
|
| 641 |
getframe( /* get focus frame */
|
| 642 |
XButtonPressedEvent *ebut
|
| 643 |
)
|
| 644 |
{
|
| 645 |
int startx = ebut->x, starty = ebut->y;
|
| 646 |
int endx, endy, midx, midy;
|
| 647 |
FVECT v1;
|
| 648 |
int li;
|
| 649 |
/* get mouse drag */
|
| 650 |
XMaskEvent(ourdisplay, ButtonReleaseMask, levptr(XEvent));
|
| 651 |
endx = levptr(XButtonReleasedEvent)->x;
|
| 652 |
endy = levptr(XButtonReleasedEvent)->y;
|
| 653 |
midx = (startx + endx) >> 1;
|
| 654 |
midy = (starty + endy) >> 1;
|
| 655 |
/* set focus distance */
|
| 656 |
if ((li = qtFindLeaf(midx, midy)) < 0)
|
| 657 |
return; /* not on window */
|
| 658 |
VCOPY(v1, qtL.wp[li]);
|
| 659 |
odev.v.vdist = sqrt(dist2(odev.v.vp, v1));
|
| 660 |
/* set frame for rendering */
|
| 661 |
if ((endx == startx) | (endy == starty))
|
| 662 |
return;
|
| 663 |
if (endx < startx) {int c = endx; endx = startx; startx = c;}
|
| 664 |
if (endy < starty) {int c = endy; endy = starty; starty = c;}
|
| 665 |
sprintf(odev_args, "%.3f %.3f %.3f %.3f",
|
| 666 |
(startx+.5)/odev.hres, 1.-(endy+.5)/odev.vres,
|
| 667 |
(endx+.5)/odev.hres, 1.-(starty+.5)/odev.vres);
|
| 668 |
inpresflags |= DFL(DC_FOCUS);
|
| 669 |
}
|
| 670 |
|
| 671 |
|
| 672 |
static void
|
| 673 |
waitabit(void) /* pause a moment */
|
| 674 |
{
|
| 675 |
struct timespec ts;
|
| 676 |
ts.tv_sec = 0;
|
| 677 |
ts.tv_nsec = 100000000;
|
| 678 |
nanosleep(&ts, NULL);
|
| 679 |
}
|
| 680 |
|
| 681 |
|
| 682 |
static void
|
| 683 |
getmove( /* get view change */
|
| 684 |
XButtonPressedEvent *ebut
|
| 685 |
)
|
| 686 |
{
|
| 687 |
int movdir = MOVDIR(ebut->button);
|
| 688 |
int movorb = MOVORB(ebut->state);
|
| 689 |
int oldnodesiz = qtMinNodesiz;
|
| 690 |
Window rootw, childw;
|
| 691 |
int rootx, rooty, wx, wy;
|
| 692 |
unsigned int statemask;
|
| 693 |
|
| 694 |
qtMinNodesiz = 16; /* for quicker update */
|
| 695 |
XNoOp(ourdisplay);
|
| 696 |
|
| 697 |
while (!XCheckMaskEvent(ourdisplay,
|
| 698 |
ButtonReleaseMask, levptr(XEvent))) {
|
| 699 |
waitabit();
|
| 700 |
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw,
|
| 701 |
&rootx, &rooty, &wx, &wy, &statemask))
|
| 702 |
break; /* on another screen */
|
| 703 |
|
| 704 |
if (!moveview(wx, odev.vres-1-wy, movdir, movorb)) {
|
| 705 |
sleep(1);
|
| 706 |
continue;
|
| 707 |
}
|
| 708 |
XClearWindow(ourdisplay, gwind);
|
| 709 |
qtUpdate();
|
| 710 |
draw_grids();
|
| 711 |
}
|
| 712 |
if (!(inpresflags & DFL(DC_SETVIEW))) { /* do final motion */
|
| 713 |
movdir = MOVDIR(levptr(XButtonReleasedEvent)->button);
|
| 714 |
wx = levptr(XButtonReleasedEvent)->x;
|
| 715 |
wy = levptr(XButtonReleasedEvent)->y;
|
| 716 |
moveview(wx, odev.vres-1-wy, movdir, movorb);
|
| 717 |
}
|
| 718 |
dev_flush();
|
| 719 |
|
| 720 |
qtMinNodesiz = oldnodesiz; /* restore quadtree resolution */
|
| 721 |
}
|
| 722 |
|
| 723 |
|
| 724 |
static void
|
| 725 |
getkey( /* get input key */
|
| 726 |
XKeyPressedEvent *ekey
|
| 727 |
)
|
| 728 |
{
|
| 729 |
Window rootw, childw;
|
| 730 |
int rootx, rooty, wx, wy;
|
| 731 |
unsigned int statemask;
|
| 732 |
int n;
|
| 733 |
char buf[8];
|
| 734 |
|
| 735 |
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL);
|
| 736 |
if (n != 1)
|
| 737 |
return;
|
| 738 |
switch (buf[0]) {
|
| 739 |
case 'h': /* turn on height motion lock */
|
| 740 |
headlocked = 1;
|
| 741 |
return;
|
| 742 |
case 'H': /* turn off height motion lock */
|
| 743 |
headlocked = 0;
|
| 744 |
return;
|
| 745 |
case 'l': /* retrieve last view */
|
| 746 |
inpresflags |= DFL(DC_LASTVIEW);
|
| 747 |
return;
|
| 748 |
case 'f': /* frame view position */
|
| 749 |
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw,
|
| 750 |
&rootx, &rooty, &wx, &wy, &statemask))
|
| 751 |
return; /* on another screen */
|
| 752 |
sprintf(odev_args, "%.4f %.4f", (wx+.5)/odev.hres,
|
| 753 |
1.-(wy+.5)/odev.vres);
|
| 754 |
inpresflags |= DFL(DC_FOCUS);
|
| 755 |
return;
|
| 756 |
case 'F': /* unfocus */
|
| 757 |
odev_args[0] = '\0';
|
| 758 |
inpresflags |= DFL(DC_FOCUS);
|
| 759 |
return;
|
| 760 |
case 'p': /* pause computation */
|
| 761 |
inpresflags |= DFL(DC_PAUSE);
|
| 762 |
return;
|
| 763 |
case 'v': /* spit out view */
|
| 764 |
inpresflags |= DFL(DC_GETVIEW);
|
| 765 |
return;
|
| 766 |
case '\n':
|
| 767 |
case '\r': /* resume computation */
|
| 768 |
inpresflags |= DFL(DC_RESUME);
|
| 769 |
return;
|
| 770 |
case CTRL('R'): /* redraw screen */
|
| 771 |
if (ncolors > 0)
|
| 772 |
new_ctab(ncolors);
|
| 773 |
qtRedraw(0, 0, odev.hres, odev.vres);
|
| 774 |
return;
|
| 775 |
case CTRL('L'): /* refresh from server */
|
| 776 |
if (inpresflags & DFL(DC_REDRAW))
|
| 777 |
return;
|
| 778 |
XClearWindow(ourdisplay, gwind);
|
| 779 |
draw_grids();
|
| 780 |
XFlush(ourdisplay);
|
| 781 |
qtCompost(100); /* unload the old tree */
|
| 782 |
if (ncolors > 0)
|
| 783 |
new_ctab(ncolors);
|
| 784 |
inpresflags |= DFL(DC_REDRAW); /* resend values from server */
|
| 785 |
rayqleft = 0; /* hold off update */
|
| 786 |
return;
|
| 787 |
case 'K': /* kill rtrace process(es) */
|
| 788 |
inpresflags |= DFL(DC_KILL);
|
| 789 |
break;
|
| 790 |
case 'R': /* restart rtrace */
|
| 791 |
inpresflags |= DFL(DC_RESTART);
|
| 792 |
break;
|
| 793 |
case 'C': /* clobber holodeck */
|
| 794 |
inpresflags |= DFL(DC_CLOBBER);
|
| 795 |
break;
|
| 796 |
case 'q': /* quit the program */
|
| 797 |
inpresflags |= DFL(DC_QUIT);
|
| 798 |
return;
|
| 799 |
default:
|
| 800 |
XBell(ourdisplay, 0);
|
| 801 |
return;
|
| 802 |
}
|
| 803 |
}
|
| 804 |
|
| 805 |
|
| 806 |
static void
|
| 807 |
fixwindow( /* repair damage to window */
|
| 808 |
XExposeEvent *eexp
|
| 809 |
)
|
| 810 |
{
|
| 811 |
if (odev.hres == 0 || odev.vres == 0) { /* first exposure */
|
| 812 |
odev.hres = eexp->width;
|
| 813 |
odev.vres = eexp->height;
|
| 814 |
}
|
| 815 |
qtRedraw(eexp->x, odev.vres - eexp->y - eexp->height,
|
| 816 |
eexp->x + eexp->width, odev.vres - eexp->y);
|
| 817 |
}
|
| 818 |
|
| 819 |
|
| 820 |
static void
|
| 821 |
resizewindow( /* resize window */
|
| 822 |
XConfigureEvent *ersz
|
| 823 |
)
|
| 824 |
{
|
| 825 |
if (ersz->width == odev.hres && ersz->height == odev.vres)
|
| 826 |
return;
|
| 827 |
|
| 828 |
odev.hres = ersz->width;
|
| 829 |
odev.vres = ersz->height;
|
| 830 |
|
| 831 |
odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres);
|
| 832 |
odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres);
|
| 833 |
|
| 834 |
inpresflags |= DFL(DC_SETVIEW);
|
| 835 |
}
|
