InstancedMeshGeometryVisual3DIsWpfHitTestVisible Property

Gets or sets a Boolean that specifies if WPF hit testing can be done on the instanced 3D objects when rendered with DirectX hardware acceleration. When IsWpfHitTestVisible is true then InstancedMeshGeometryVisual3D always creates WPF's GeometryModel3D objects (one for each instance) that are used by WPF's hit testing. This can greatly increase initialization time. Default value is false. When showing instanced objects, it is recommended to use DXEngine hit testing that support fast hit testing on instanced objects and leave this property on false.

public bool IsWpfHitTestVisible { get; set; }