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import numpy
from stl.mesh import Mesh
from stl.base import BaseMesh
from stl.base import RemoveDuplicates
from . import utils
def test_units_1d():
data = numpy.zeros(1, dtype=Mesh.dtype)
data['vectors'][0] = numpy.array([[0, 0, 0],
[1, 0, 0],
[2, 0, 0]])
mesh = Mesh(data, remove_empty_areas=False)
mesh.update_units()
assert mesh.areas == 0
utils.array_equals(mesh.normals, [0, 0, 0])
utils.array_equals(mesh.units, [0, 0, 0])
def test_units_2d():
data = numpy.zeros(2, dtype=Mesh.dtype)
data['vectors'][0] = numpy.array([[0, 0, 0],
[1, 0, 0],
[0, 1, 0]])
data['vectors'][1] = numpy.array([[1, 0, 0],
[0, 1, 0],
[1, 1, 0]])
mesh = Mesh(data, remove_empty_areas=False)
mesh.update_units()
assert numpy.allclose(mesh.areas, [.5, .5])
assert numpy.allclose(mesh.normals, [[0, 0, 1.], [0, 0, -1.]])
assert numpy.allclose(mesh.units, [[0, 0, 1], [0, 0, -1]])
def test_units_3d():
data = numpy.zeros(1, dtype=Mesh.dtype)
data['vectors'][0] = numpy.array([[0, 0, 0],
[1, 0, 0],
[0, 1, 1.]])
mesh = Mesh(data, remove_empty_areas=False)
mesh.update_units()
assert (mesh.areas - 2 ** .5) < 0.0001
assert numpy.allclose(mesh.normals, [0, -1, 1])
units = mesh.units[0]
assert units[0] == 0
# Due to floating point errors
assert (units[1] + .5 * 2 ** .5) < 0.0001
assert (units[2] - .5 * 2 ** .5) < 0.0001
def test_duplicate_polygons():
data = numpy.zeros(6, dtype=Mesh.dtype)
data['vectors'][0] = numpy.array([[1, 0, 0],
[0, 0, 0],
[0, 0, 0]])
data['vectors'][1] = numpy.array([[2, 0, 0],
[0, 0, 0],
[0, 0, 0]])
data['vectors'][2] = numpy.array([[0, 0, 0],
[0, 0, 0],
[0, 0, 0]])
data['vectors'][3] = numpy.array([[2, 0, 0],
[0, 0, 0],
[0, 0, 0]])
data['vectors'][4] = numpy.array([[1, 0, 0],
[0, 0, 0],
[0, 0, 0]])
data['vectors'][5] = numpy.array([[0, 0, 0],
[0, 0, 0],
[0, 0, 0]])
mesh = Mesh(data)
assert mesh.data.size == 6
mesh = Mesh(data, remove_duplicate_polygons=0)
assert mesh.data.size == 6
mesh = Mesh(data, remove_duplicate_polygons=False)
assert mesh.data.size == 6
mesh = Mesh(data, remove_duplicate_polygons=None)
assert mesh.data.size == 6
mesh = Mesh(data, remove_duplicate_polygons=RemoveDuplicates.NONE)
assert mesh.data.size == 6
mesh = Mesh(data, remove_duplicate_polygons=RemoveDuplicates.SINGLE)
assert mesh.data.size == 3
mesh = Mesh(data, remove_duplicate_polygons=True)
assert mesh.data.size == 3
assert numpy.allclose(mesh.vectors[0], numpy.array([[1, 0, 0],
[0, 0, 0],
[0, 0, 0]]))
assert numpy.allclose(mesh.vectors[1], numpy.array([[2, 0, 0],
[0, 0, 0],
[0, 0, 0]]))
assert numpy.allclose(mesh.vectors[2], numpy.array([[0, 0, 0],
[0, 0, 0],
[0, 0, 0]]))
mesh = Mesh(data, remove_duplicate_polygons=RemoveDuplicates.ALL)
assert mesh.data.size == 3
assert numpy.allclose(mesh.vectors[0], numpy.array([[1, 0, 0],
[0, 0, 0],
[0, 0, 0]]))
assert numpy.allclose(mesh.vectors[1], numpy.array([[2, 0, 0],
[0, 0, 0],
[0, 0, 0]]))
assert numpy.allclose(mesh.vectors[2], numpy.array([[0, 0, 0],
[0, 0, 0],
[0, 0, 0]]))
def test_remove_all_duplicate_polygons():
data = numpy.zeros(5, dtype=Mesh.dtype)
data['vectors'][0] = numpy.array([[0, 0, 0],
[0, 0, 0],
[0, 0, 0]])
data['vectors'][1] = numpy.array([[1, 0, 0],
[0, 0, 0],
[0, 0, 0]])
data['vectors'][2] = numpy.array([[2, 0, 0],
[0, 0, 0],
[0, 0, 0]])
data['vectors'][3] = numpy.array([[3, 0, 0],
[0, 0, 0],
[0, 0, 0]])
data['vectors'][4] = numpy.array([[3, 0, 0],
[0, 0, 0],
[0, 0, 0]])
mesh = Mesh(data, remove_duplicate_polygons=False)
assert mesh.data.size == 5
Mesh.remove_duplicate_polygons(mesh.data, RemoveDuplicates.NONE)
mesh = Mesh(data, remove_duplicate_polygons=RemoveDuplicates.ALL)
assert mesh.data.size == 3
assert (mesh.vectors[0] == numpy.array([[0, 0, 0],
[0, 0, 0],
[0, 0, 0]])).all()
assert (mesh.vectors[1] == numpy.array([[1, 0, 0],
[0, 0, 0],
[0, 0, 0]])).all()
assert (mesh.vectors[2] == numpy.array([[2, 0, 0],
[0, 0, 0],
[0, 0, 0]])).all()
def test_empty_areas():
data = numpy.zeros(3, dtype=Mesh.dtype)
data['vectors'][0] = numpy.array([[0, 0, 0],
[1, 0, 0],
[0, 1, 0]])
data['vectors'][1] = numpy.array([[1, 0, 0],
[0, 1, 0],
[1, 0, 0]])
data['vectors'][2] = numpy.array([[1, 0, 0],
[0, 1, 0],
[1, 0, 0]])
mesh = Mesh(data, remove_empty_areas=False)
assert mesh.data.size == 3
mesh = Mesh(data, remove_empty_areas=True)
assert mesh.data.size == 1
def test_base_mesh():
data = numpy.zeros(10, dtype=BaseMesh.dtype)
mesh = BaseMesh(data, remove_empty_areas=False)
# Increment vector 0 item 0
mesh.v0[0] += 1
mesh.v1[0] += 2
# Check item 0 (contains v0, v1 and v2)
assert (mesh[0] == numpy.array(
[1., 1., 1., 2., 2., 2., 0., 0., 0.], dtype=numpy.float32)
).all()
assert (mesh.vectors[0] == numpy.array([
[1., 1., 1.],
[2., 2., 2.],
[0., 0., 0.]], dtype=numpy.float32)).all()
assert (mesh.v0[0] == numpy.array([1., 1., 1.], dtype=numpy.float32)).all()
assert (mesh.points[0] == numpy.array(
[1., 1., 1., 2., 2., 2., 0., 0., 0.], dtype=numpy.float32)
).all()
assert (
mesh.x[0] == numpy.array([1., 2., 0.], dtype=numpy.float32)).all()
mesh[0] = 3
assert (mesh[0] == numpy.array(
[3., 3., 3., 3., 3., 3., 3., 3., 3.], dtype=numpy.float32)
).all()
assert len(mesh) == len(list(mesh))
assert (mesh.min_ < mesh.max_).all()
mesh.update_normals()
assert mesh.units.sum() == 0.0
mesh.v0[:] = mesh.v1[:] = mesh.v2[:] = 0
assert mesh.points.sum() == 0.0
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