float doForce = true;
void stepPhysicsBall() {
	cout << "stepPhysicsBall -Start-" << endl;
	if (!ballInstantMode) {
		return;
	}

	// start Dynamic
	ballInstantMode->setRigidBodyFlag(PxRigidBodyFlag::Enum::eKINEMATIC, false);

	bool const interactive = true;
	stepPhysicsImmediateModeOneActor(interactive);

	// stop dynamic
	ballInstantMode->setRigidBodyFlag(PxRigidBodyFlag::Enum::eKINEMATIC, true);

	cout << "stepPhysicsBall -END-" << endl;
}