* @return
*/
public PVector getTipOnScreen(Pointable pointable) {
PVector pos;
ScreenList sl = this.controller.locatedScreens();
com.leapmotion.leap.Screen calibratedScreen = sl.get(activeScreenNr);
Vector loc = calibratedScreen.intersect(pointable, true);
float _x = PApplet.map(loc.getX(), 0, 1, 0, this.p.displayWidth);
_x -= p.getLocationOnScreen().x;
float _y = PApplet.map(loc.getY(), 0, 1, this.p.displayHeight, 0);