ConstReadonlybegin: 1The gesture starts. This cancels every running camera animation before the change applies.
Readonlycancel: 4The platform cancelled the gesture. This also cancels every running camera animation after the change applies.
Readonlyend: 3Readonlynone: 0The change isn't part of a gesture.
Readonlyupdate: 2The gesture continues. To start a gesture that keeps the running camera
animations, start it with this phase instead of GesturePhase.begin.
Where a camera change falls in a gesture that the user makes.
GesturePhase.beginandGesturePhase.updatemark a gesture in progress, andGesturePhase.endandGesturePhase.cancelend it.See
mln_gesture_phasein the C API reference.