int
INFLATE::tap_cb(CGESTUREptr& gest, DrawState*& state)
{
err_adv(debug, "INFLATE::tap_cb");
// Tracks if the tap was near a guideline
bool near_guidelines = false;
PIXEL pdummy;
int idummy;
if ( PIXEL_list(_lines).closest( PIXEL(gest->start()), pdummy, idummy ) < 5 )
near_guidelines = true;
// Check if gesture hits a BFace
Bface* face = 0;
Bsurface::hit_ctrl_surface(gest->start(), 1, &face);
// Fail if Gesture missed guidelines and geometry
if ( !face && !near_guidelines )
return cancel_cb(gest,state);
// Check that we are trying to inflate
if ( _orig_face ) {
// Find the reachable faces from the starting point
Bface_list set
= _mode ? _faces : Bface_list::reachable_faces(_orig_face);
// verify that the user tapped a face that is part of the inflation region
if ( face && !set.contains( face ) ) {
return cancel_cb(gest,state);
}
// Attempt to inflate the surface
INFLATE_CMDptr cmd = _mode ? (new INFLATE_CMD( _faces, _preview_dist )) :
(new INFLATE_CMD( _orig_face, _preview_dist ));
WORLD::add_command(cmd);
}
// On fail, cancel
return cancel_cb(gest,state);
}
