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/* Copyright (c) 1991 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Circle sources in a displayed image. |
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* |
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#include <X11/Xlib.h> |
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#include <X11/Xutil.h> |
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#ifndef BSD |
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#define vfork fork |
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#endif |
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#define XIM "ximage" |
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#define NSEG 30 /* number of segments per circle */ |
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float col[3] = {1.,0.,0.}; /* color */ |
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VIEW ourview = STDVIEW; /* view for picture */ |
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int xres, yres; /* picture resolution */ |
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RESOLU pres; /* picture resolution */ |
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char *progname; /* program name */ |
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int argc; |
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char *argv[]; |
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{ |
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extern double atof(); |
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char *windowname = NULL; |
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FILE *fp; |
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XWindowAttributes wa; |
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XColor xc; |
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XGCValues gcv; |
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register int i; |
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/* get the viewing parameters */ |
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if (viewfile(pname, &ourview, &xres, &yres) <= 0 || |
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if (viewfile(pname, &ourview, &pres) <= 0 || |
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setview(&ourview) != NULL) { |
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fprintf(stderr, "%s: cannot get view from \"%s\"\n", |
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progname, pname); |
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exit(1); |
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} |
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/* find our window */ |
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if (wname == NULL) |
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wname = pname; |
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gwind = xfindwind(theDisplay, rwind, wname, 2); |
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if (wname == NULL) { |
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/* remove directory prefix from name */ |
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for (i = strlen(pname); i-- > 0; ) |
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if (pname[i] == '/') |
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break; |
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wname = pname+i+1; |
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i = 0; |
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} else |
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i = 1; |
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gwind = xfindwind(theDisplay, rwind, wname, 4); |
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if (gwind == None) { |
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if (wname != pname) { |
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if (i) { |
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fprintf(stderr, "%s: cannot find \"%s\" window\n", |
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progname, wname); |
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exit(2); |
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} |
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/* start ximage */ |
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if (vfork() == 0) { |
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execlp(XIM, XIM, pname, 0); |
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if (fork() == 0) { |
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execlp(XIM, XIM, "-c", "256", pname, 0); |
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perror(XIM); |
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fprintf(stderr, "%s: cannot start %s\n", |
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progname, XIM); |
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} |
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do |
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sleep(8); |
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while ((gwind=xfindwind(theDisplay,rwind,pname,2)) == None); |
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while ((gwind=xfindwind(theDisplay,rwind,wname,4)) == None); |
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} else |
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XMapRaised(theDisplay, gwind); |
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do { |
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XGetWindowAttributes(theDisplay, gwind, &wa); |
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sleep(6); |
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} while (wa.map_state != IsViewable); |
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if (wa.width != xres || wa.height != yres) { |
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if (wa.width != scanlen(&pres) || wa.height != numscans(&pres)) { |
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fprintf(stderr, |
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"%s: warning -- window seems to be the wrong size!\n", |
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progname); |
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xres = wa.width; |
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yres = wa.height; |
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if (pres.rt & YMAJOR) { |
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pres.xr = wa.width; |
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pres.yr = wa.height; |
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} else { |
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pres.xr = wa.height; |
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pres.yr = wa.width; |
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} |
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} |
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/* set graphics context */ |
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gcv.font = XLoadFont(theDisplay, FONTNAME); |
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{ |
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FVECT start, cur; |
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XPoint pt[NSEG+1]; |
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double px, py, pz; |
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FVECT pp; |
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int ip[2]; |
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register int i; |
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fcross(cur, dir, ourview.vup); |
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cur[0] += ourview.vp[0]; |
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cur[1] += ourview.vp[1]; |
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cur[2] += ourview.vp[2]; |
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viewpixel(&px, &py, &pz, &ourview, cur); |
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if (pz <= 0.0) |
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viewloc(pp, &ourview, cur); |
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if (pp[2] <= 0.0) |
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goto fail; |
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pt[i].x = px*xres; |
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pt[i].y = yres-1 - (int)(py*yres); |
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loc2pix(ip, &pres, pp[0], pp[1]); |
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pt[i].x = ip[0]; |
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pt[i].y = ip[1]; |
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} |
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XDrawLines(theDisplay, gwind, vecGC, pt, NSEG+1, CoordModeOrigin); |
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return; |
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double v; |
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{ |
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FVECT pos; |
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double px, py, pz; |
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FVECT pp; |
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int ip[2]; |
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char buf[32]; |
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pos[0] = ourview.vp[0] + dir[0]; |
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pos[1] = ourview.vp[1] + dir[1]; |
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pos[2] = ourview.vp[2] + dir[2]; |
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viewpixel(&px, &py, &pz, &ourview, pos); |
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if (pz <= 0.0) |
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viewloc(pp, &ourview, pos); |
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if (pp[2] <= 0.0) |
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return; |
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loc2pix(ip, &pres, pp[0], pp[1]); |
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sprintf(buf, "%.0f", v); |
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XDrawImageString(theDisplay, gwind, strGC, |
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(int)(px*xres), yres-1-(int)(py*yres), |
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buf, strlen(buf)); |
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ip[0], ip[1], buf, strlen(buf)); |
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} |
