return;
PCamera c = aEvent.getCamera();
PBounds b = c.getBoundsReference();
Point2D l = aEvent.getPositionRelativeTo(c);
int outcode = b.outcode(l);
PDimension delta = new PDimension();
if ((outcode & Rectangle.OUT_TOP) != 0) {
delta.height = validatePanningSpeed(-1.0
- (0.5 * Math.abs(l.getY() - b.getY())));