return panel;
}
private DynamicsModifier createVelocityValue (Object selectedItem) {
DynamicsModifier velocityValue = null;
if(selectedItem == VEL_TYPE_ROTATIONAL_2D) velocityValue = new DynamicsModifier.Rotational2D();
else if(selectedItem == VEL_TYPE_ROTATIONAL_3D) velocityValue = new DynamicsModifier.Rotational3D();
else if(selectedItem == VEL_TYPE_CENTRIPETAL) velocityValue = new DynamicsModifier.CentripetalAcceleration();
else if(selectedItem == VEL_TYPE_TANGENTIAL) velocityValue = new DynamicsModifier.TangentialAcceleration();
else if(selectedItem == VEL_TYPE_POLAR) velocityValue = new DynamicsModifier.PolarAcceleration();