1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
# ----------------------------------------------------------------------------
# - Open3D: www.open3d.org -
# ----------------------------------------------------------------------------
# Copyright (c) 2018-2024 www.open3d.org
# SPDX-License-Identifier: MIT
# ----------------------------------------------------------------------------
import open3d as o3d
import numpy as np
if __name__ == "__main__":
knot_mesh = o3d.data.KnotMesh()
mesh = o3d.io.read_triangle_mesh(knot_mesh.path)
print("Displaying mesh without normals ...")
# Invalidate existing normals.
mesh.triangle_normals = o3d.utility.Vector3dVector(np.zeros((1, 3)))
print("normals: \n", np.asarray(mesh.triangle_normals))
o3d.visualization.draw([mesh])
print("Computing normals and rendering it ...")
mesh.compute_vertex_normals()
print("normals: \n", np.asarray(mesh.triangle_normals))
o3d.visualization.draw([mesh])
|
