def test_set_vertices_and_compute_normals03(self):
mesh = Mesh(
vertices=np.array([
[0, 0, 0],
[0, 0, 0],
[0, 0, 0],
]),
polygon_vertex_indices=[[0, 1, 2]],
triangle_vertex_indices=np.array([[0, 1, 2]]),
)
new_vertices = np.array([
[0, 0, 0],
[1, 0, 0],
[0, 1, 0],
])
ans = np.array([
[0, 0, 1],
[0, 0, 1],
[0, 0, 1],
], dtype=np.float32)
self.assertFalse(mesh.has_normals())
mesh2 = mesh.set_vertices_and_compute_normals(new_vertices)
res = mesh2.normals
self.assertEqual(ans.shape, res.shape)
self.assertTrue(np.allclose(ans, res))
def test_set_vertices_and_compute_normals02(self):
new_vertices = np.array([
[0.1, 0, 0],
[0, 50, 0],
[1, 0, 0],
[0, 0, 1],
[0, 0, 0],
],
dtype=np.float32)
mesh = Mesh(
vertices=np.zeros_like(new_vertices),
polygon_vertex_indices=[
[1, 0, 4],
[4, 2, 3],
],
triangle_vertex_indices=np.array([
[1, 0, 4],
[4, 2, 3],
],
dtype=np.int32),
)
ans = np.array([
[0, 0, -1],
[0, 0, -1],
[0, -1, 0],
[0, -1, 0],
[0, -0.70710678, -0.70710678],
],
dtype=np.float32)
self.assertFalse(mesh.has_normals())
mesh.set_vertices_and_compute_normals(new_vertices)
res = mesh.normals
self.assertEqual(ans.shape, res.shape)
self.assertTrue(np.allclose(ans, res))
def test_mesh_has_normals02(self):
mesh1 = Mesh(vertices=np.arange(3),
polygon_vertex_indices=[[0, 1, 2]],
normals=np.array([1, 2, 3]))
self.assertTrue(mesh1.has_normals())
def test_mesh_has_normals01(self):
mesh1 = Mesh(vertices=np.arange(3), polygon_vertex_indices=[[0, 1, 2]])
self.assertFalse(mesh1.has_normals())