def test_positive_oriented_3D(self):
p1 = np.array([0, 0, 0])
p2 = np.array([1, 0, 0])
p3 = np.array([0, 1, 0])
p4 = np.array([0, 0, 1])
self.assertGreater(0.0, orient_3D(p1, p2, p3, p4))
def test_degenerated_to_a_point_3D(self):
p1 = np.array([1, 0, 0])
p2 = np.array([1, 0, 0])
p3 = np.array([1, 0, 0])
p4 = np.array([1, 0, 0])
self.assertEqual(0.0, orient_3D(p1, p2, p3, p4))
def test_list_input_3D(self):
p1 = [0.0, 0.0, 0.0]
p2 = [1.0, 0.0, 0.0]
p3 = [0.0, 1.0, 0.0]
p4 = [0.0, 0.0, 1.0]
self.assertGreater(0.0, orient_3D(p1, p2, p3, p4))
def test_negative_oriented_3D(self):
p1 = np.array([0, 0, 0])
p2 = np.array([1, 0, 0])
p3 = np.array([0, 1, 0])
p4 = np.array([0, 0, -1])
self.assertLess(0.0, orient_3D(p1, p2, p3, p4))
def test_collinear_3D(self):
p1 = np.array([1, 0, 0])
p2 = np.array([1, 0, 0])
p3 = np.array([0, 1, 0])
p4 = np.array([0, 1, 0])
self.assertEqual(0.0, orient_3D(p1, p2, p3, p4))
def test_positive_oriented_3D(self):
p1 = np.array([0, 0, 0]);
p2 = np.array([1, 0, 0]);
p3 = np.array([0, 1, 0]);
p4 = np.array([0, 0, 1]);
self.assertGreater(0.0, orient_3D(p1, p2, p3, p4));
def main():
args = parse_args();
mesh = pymesh.load_mesh(args.input_mesh);
vertices = mesh.vertices;
voxels = mesh.voxels;
num_voxels = mesh.num_voxels;
orientation = np.zeros(num_voxels);
for i in range(num_voxels):
tet = voxels[i];
orientation[i] = pymesh.orient_3D(
vertices[tet[1]],
vertices[tet[0]],
vertices[tet[2]],
vertices[tet[3]]);
if orientation[i] < 0:
orientation[i] = -1;
elif orientation[i] > 0:
orientation[i] = 1;
mesh.add_attribute("orientation");
mesh.set_attribute("orientation", orientation);
pymesh.save_mesh(args.output_mesh, mesh, "orientation");
def test_list_input_3D(self):
p1 = [0.0, 0.0, 0.0];
p2 = [1.0, 0.0, 0.0];
p3 = [0.0, 1.0, 0.0];
p4 = [0.0, 0.0, 1.0];
self.assertGreater(0.0, orient_3D(p1, p2, p3, p4));
def test_degenerated_to_a_point_3D(self):
p1 = np.array([1, 0, 0]);
p2 = np.array([1, 0, 0]);
p3 = np.array([1, 0, 0]);
p4 = np.array([1, 0, 0]);
self.assertEqual(0.0, orient_3D(p1, p2, p3, p4));
def test_collinear_3D(self):
p1 = np.array([1, 0, 0]);
p2 = np.array([1, 0, 0]);
p3 = np.array([0, 1, 0]);
p4 = np.array([0, 1, 0]);
self.assertEqual(0.0, orient_3D(p1, p2, p3, p4));
def test_negative_oriented_3D(self):
p1 = np.array([0, 0, 0]);
p2 = np.array([1, 0, 0]);
p3 = np.array([0, 1, 0]);
p4 = np.array([0, 0,-1]);
self.assertLess(0.0, orient_3D(p1, p2, p3, p4));
def coplanar_analysis(mesh, intersecting_faces):
intersect_and_coplanar = set()
vertices = mesh.vertices
faces = mesh.faces
for fi, fj in intersecting_faces:
p0 = vertices[faces[fi, 0]]
p1 = vertices[faces[fi, 1]]
p2 = vertices[faces[fi, 2]]
q0 = vertices[faces[fj, 0]]
q1 = vertices[faces[fj, 1]]
q2 = vertices[faces[fj, 2]]
if pymesh.orient_3D(p0, p1, p2, q0) == 0 and \
pymesh.orient_3D(p0, p1, p2, q1) == 0 and \
pymesh.orient_3D(p0, p1, p2, q2) == 0:
intersect_and_coplanar.add(fi)
intersect_and_coplanar.add(fj)
return intersect_and_coplanar
def coplanar_analysis(mesh, intersecting_faces):
intersect_and_coplanar = set();
vertices = mesh.vertices;
faces = mesh.faces;
for fi, fj in intersecting_faces:
p0 = vertices[faces[fi, 0]];
p1 = vertices[faces[fi, 1]];
p2 = vertices[faces[fi, 2]];
q0 = vertices[faces[fj, 0]];
q1 = vertices[faces[fj, 1]];
q2 = vertices[faces[fj, 2]];
if pymesh.orient_3D(p0, p1, p2, q0) == 0 and \
pymesh.orient_3D(p0, p1, p2, q1) == 0 and \
pymesh.orient_3D(p0, p1, p2, q2) == 0:
intersect_and_coplanar.add(fi);
intersect_and_coplanar.add(fj);
return intersect_and_coplanar;
def main():
args = parse_args()
mesh = pymesh.load_mesh(args.input_mesh)
vertices = mesh.vertices
voxels = mesh.voxels
num_voxels = mesh.num_voxels
orientation = np.zeros(num_voxels)
for i in range(num_voxels):
tet = voxels[i]
orientation[i] = pymesh.orient_3D(vertices[tet[1]], vertices[tet[0]],
vertices[tet[2]], vertices[tet[3]])
if orientation[i] < 0:
orientation[i] = -1
elif orientation[i] > 0:
orientation[i] = 1
mesh.add_attribute("orientation")
mesh.set_attribute("orientation", orientation)
pymesh.save_mesh(args.output_mesh, mesh, "orientation")
