I need to custom direction of aixs drag gizmo, built in AxisDragGizmo class is a grood way to do it. But there are still some little problem in my work. Due to the extrusion mesh has been setPivotMatrix,
the gizmo object cannot align local origin of the mesh;
Than I plan to setCustomMesh for axis gizmo, I build an arrow mesh by merging a tube and
a cone, but when I set it as custom mesh for the axis gizmo. the color changed to white and I can not drag object with it.