public void clear() { for (Marker m : trail) { m.setVisible(false); m.flagForRemoval(); } trail.clear(); counter = 0; }
/** * ******************************************************************************* addMarker * * <p>This method is responsible for adding crumbs to the handler and determining when crumbs * should become invisible. Right now, crumbs are removed once there are more than 20 markers in * the handler. Crumbs are removed according to when they were placed on the manifold by the user. * ******************************************************************************* */ public void addMarker(ManifoldPosition mp) { ManifoldPosition pos = new ManifoldPosition(mp); Vector vec = new Vector(pos.getDirectionForward()); vec.scale(-.25); pos.move(vec); Marker m = new Marker(pos, crumb, Marker.MarkerType.FIXED); trail.add(m); markers.addMarker(m); counter++; int numMarkers = trail.size() - 1; if (numMarkers >= 5) { Marker toRemove = trail.poll(); toRemove.flagForRemoval(); } }