three_d_utils¶ 用于三维物体的实用函数。 函数 get_3d_vmob_end_corner(vmob)[source]¶ Return type: Point3D get_3d_vmob_end_corner_index(vmob)[source]¶ Return type: 整数 get_3d_vmob_end_corner_unit_normal(vmob)[来源]¶ Return type: Vector3D get_3d_vmob_gradient_start_and_end_points(vmob)[来源]¶ Return type: 元组[Point3D, Point3D] get_3d_vmob_start_corner(vmob)[来源]¶ Return type: Point3D get_3d_vmob_start_corner_index(vmob)[来源]¶ Return type: 字面量[0] get_3d_vmob_start_corner_unit_normal(vmob)[来源]¶ Return type: Vector3D get_3d_vmob_unit_normal(vmob, point_index)[source]¶ Parameters: point_index (int) Return type: Vector3D