通过判断三维距离，实现对创建3团点云的分割
* 点云1
gen_object_model_3d_from_points (rand(100), rand(100),rand(100), Points1)
* 点云2
gen_object_model_3d_from_points (rand(100), 2+rand(100),rand(100), Points2)
* 点云3
gen_object_model_3d_from_points (rand(100), rand(100),2+rand(100), Points3)
* 组合
union_object_model_3d ([Points1,Points2,Points3], 'points_surface', UnionObjectModel3D)
* 点云分割（通过点之间的距离判断）
connection_object_model_3d (UnionObjectModel3D, 'distance_3d', 0.5, ObjectModel3DConnected)
* 显示
dev_get_window (WindowHandle)
visualize_object_model_3d (WindowHandle, [ObjectModel3DConnected], [], [], ['colored'], [12], [], [], [], PoseOut)
