ConstReadonlyheightOnly: 1Keeps the world filling the view from top to bottom.
Readonlynone: 0Readonlyscreen: 3Keeps the whole view inside the bounds from MapHandle.setBounds().
ReadonlywidthAndHeight: 2Keeps the world filling the view in both directions.
How the map keeps the camera within the world or within its bounds.
See
mln_constrain_modein the C API reference.