import time
import open3d as o3d;
import numpy as np;#圆柱形 
mesh_cylinder = o3d.geometry.TriangleMesh.create_cylinder(radius=0.3,height=4.0)
mesh_cylinder.compute_vertex_normals()
mesh_cylinder.paint_uniform_color([0.1, 0.4, 0.1])
o3d.visualization.draw_geometries([mesh_cylinder]) #长方体
mesh_box = o3d.geometry.TriangleMesh.create_box(width=2.0,height=1.0,depth=1.0)
mesh_box.compute_vertex_normals()
mesh_box.paint_uniform_color([0.9, 0.1, 0.1])
o3d.visualization.draw_geometries([mesh_box])