def test_colinear(self):
from trimesh.path import segments
seg = g.np.column_stack((g.np.zeros((3, 3)), [[0, 1, 0], [0, 1, 0],
[0, 2, 0]])).reshape(
(-1, 2, 3))
L = segments.colinear_pairs(seg)
assert len(L) == 3
n = segments.colinear_pairs(seg, length=0.01)
assert len(n) == 1
def test_colinear(self):
from trimesh.path import segments
seg = g.np.column_stack((
g.np.zeros((3, 3)),
[[0, 1, 0], [0, 1, 0], [0, 2, 0]])).reshape((-1, 2, 3))
L = segments.colinear_pairs(seg)
assert len(L) == 3
n = segments.colinear_pairs(seg, length=0.01)
assert len(n) == 1
def test_param(self):
from trimesh.path import segments
# check 2D and 3D
for dimension in [2, 3]:
# a bunch of random line segments
s = g.np.random.random((100, 2, dimension))
# convert segment to point on line closest to origin
# as well as a vector and two distances along vector
param = segments.segments_to_parameters(s)
# convert parameterized back to segments
roundtrip = segments.parameters_to_segments(*param)
# they should be the same after a roundtrip
assert g.np.allclose(s, roundtrip)
# make index 1 the first segment but offset along vector
# IE make s[0] colinear with s[1]
s[1] = s[0] + 10 * (s[0][0] - s[0][1])
# calculate colinear pairs
colinear = segments.colinear_pairs(s)
# due to our wangling the first and second index
# should be a colinear pair
assert {0, 1} in [set(i) for i in colinear]
def test_param(self):
from trimesh.path import segments
# check 2D and 3D
for dimension in [2, 3]:
# a bunch of random line segments
s = g.np.random.random((100, 2, dimension))
# convert segment to point on line closest to origin
# as well as a vector and two distances along vector
param = segments.segments_to_parameters(s)
# convert parameterized back to segments
roundtrip = segments.parameters_to_segments(*param)
# they should be the same after a roundtrip
assert g.np.allclose(s, roundtrip)
# make index 1 the first segment but offset along vector
# IE make s[0] colinear with s[1]
s[1] = s[0] + 10 * (s[0][0] - s[0][1])
# calculate colinear pairs
colinear = segments.colinear_pairs(s)
# due to our wangling the first and second index
# should be a colinear pair
assert {0, 1} in [set(i) for i in colinear]