static int
getkey( /* get input key */
register XKeyPressedEvent *ekey
)
{
int n;
char buf[8];
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL);
if (n != 1)
return(1);
switch (buf[0]) {
case 'h': /* turn on height motion lock */
headlocked = 1;
break;
case 'H': /* turn off height motion lock */
headlocked = 0;
break;
case 'l': /* retrieve last (premouse) view */
if (lastview.type) {
VIEW vtmp;
vtmp = thisview;
dev_view(&lastview);
lastview = vtmp;
} else
XBell(ourdisplay, 0);
break;
case 'n': /* move to next standard view */
gotoview(currentview+1);
break;
case 'p': /* move to last standard view */
gotoview(currentview-1);
break;
case '+': /* zoom in */
zoomview(100+ZOOMPCT, ekey->x, vres-1-ekey->y);
break;
case '-': /* zoom out */
zoomview(100-ZOOMPCT, ekey->x, vres-1-ekey->y);
break;
case 'v': /* spit current view to stdout */
fputs(VIEWSTR, stdout);
fprintview(&thisview, stdout);
fputc('\n', stdout);
break;
case 'V': /* append view to rad file */
appendview(NULL, &thisview);
break;
case 'q': /* quit the program */
return(0);
default:
XBell(ourdisplay, 0);
break;
}
return(1);
}
void
getaim( /* aim camera */
char *s
)
{
VIEW nv = ourview;
double zfact;
if (getinterest(s, 1, nv.vdir, &zfact) < 0)
return;
zoomview(&nv, zfact);
newview(&nv);
}
void
getrotate( /* rotate camera */
char *s
)
{
VIEW nv = ourview;
double angle, elev, zfact;
elev = 0.0; zfact = 1.0;
if (sscanf(s, "%lf %lf %lf", &angle, &elev, &zfact) < 1) {
error(COMMAND, "missing angle");
return;
}
spinvector(nv.vdir, ourview.vdir, ourview.vup, angle*(PI/180.));
if (elev != 0.0)
geodesic(nv.vdir, nv.vdir, nv.vup, elev*(PI/180.), GEOD_RAD);
zoomview(&nv, zfact);
newview(&nv);
}