def test_Operators(self):
l1 = Gf.LineSeg(Gf.Vec3d(0, 0, 0), Gf.Vec3d(1, 1, 1))
l2 = Gf.LineSeg(Gf.Vec3d(0, 0, 0), Gf.Vec3d(1, 1, 1))
self.assertEqual(l1, l2, err("equality"))
l1 = Gf.LineSeg(Gf.Vec3d(0, 0, 0), Gf.Vec3d(1, 2, 3))
l2 = Gf.LineSeg(Gf.Vec3d(0, 0, 0), Gf.Vec3d(1, 1, 1))
self.assertNotEqual(l1, 2, err("inequality"))
self.assertEqual(l1, eval(repr(l1)), err("repr"))
self.assertTrue(len(str(Gf.LineSeg())), err("str"))
def test_Properties(self):
l = Gf.LineSeg(Gf.Vec3d(1,2,3), Gf.Vec3d(2,3,4))
self.assertTrue(l.GetPoint(0) == Gf.Vec3d(1,2,3) and \
l.direction == (Gf.Vec3d(2,3,4) - Gf.Vec3d(1,2,3)).GetNormalized() and \
l.length == Gf.GetLength(Gf.Vec3d(2,3,4)-Gf.Vec3d(1,2,3)), \
err("initializing constructor"))
l = Gf.LineSeg(Gf.Vec3d(0,0,0), Gf.Vec3d(0,1,0))
self.assertTrue(l.GetPoint(0.5) == Gf.Vec3d(0, 0.5, 0) and \
l.GetPoint(1.0) == Gf.Vec3d(0, 1, 0), err("GetPoint"))
l = Gf.LineSeg(Gf.Vec3d(1,2,3), Gf.Vec3d(1,1,1))
self.assertEqual(l.direction, (Gf.Vec3d(1,1,1) - Gf.Vec3d(1,2,3)).GetNormalized(), err("direction"))
l = Gf.LineSeg(Gf.Vec3d(0,0,0), Gf.Vec3d(0,3,4))
self.assertEqual(l.length, 5, err("length"))
def test_FindClosestPoint(self):
r = Gf.Ray(Gf.Vec3d(), Gf.Vec3d(3, 4, 5))
(p, dist) = r.FindClosestPoint(Gf.Vec3d(1, 1, 1))
self.assertTrue(Gf.IsClose(p, Gf.Vec3d(0.72, 0.96, 1.2), 0.00001))
self.assertTrue(Gf.IsClose(dist, 0.24, 0.00001))
# non-intersecting case
r = Gf.Ray(Gf.Vec3d(), Gf.Vec3d(3, 4, 5))
l = Gf.Line(Gf.Vec3d(1, 0, 0), Gf.Vec3d(3, 3, 3))
(intersects, rayPoint, linePoint, rayDistance, lineDistance) = \
Gf.FindClosestPoints(r, l)
self.assertTrue(intersects and \
rayPoint == Gf.Vec3d() and \
Gf.IsClose(linePoint, Gf.Vec3d(-4./3,-7./3,-7./3), 0.00001) and \
rayDistance == 0 and \
Gf.IsClose(lineDistance, -4.04145188433, 0.00001))
r = Gf.Ray(Gf.Vec3d(), Gf.Vec3d(3, 4, 5))
l = Gf.Line(Gf.Vec3d(1, 0, 0), Gf.Vec3d(3, 4, 5))
(intersects, rayPoint, linePoint, rayDistance, lineDistance) = \
Gf.FindClosestPoints(r, l)
self.assertFalse(intersects)
# closest point on theis line segment to the ray is going to
# be the near end, (1,0,0)
r = Gf.Ray(Gf.Vec3d(), Gf.Vec3d(3, 4, 5))
l = Gf.LineSeg(Gf.Vec3d(1, 0, 0), Gf.Vec3d(3, 3, 3))
(intersects, rayPoint, linePoint, rayDistance, lineDistance) = \
Gf.FindClosestPoints(r, l)
(closestRayPtToNearEnd,
rayDistToNearEnd) = r.FindClosestPoint(Gf.Vec3d(1, 0, 0))
self.assertTrue(intersects and \
Gf.IsClose(rayPoint, closestRayPtToNearEnd, 0.00001) and \
Gf.IsClose(linePoint, Gf.Vec3d(1,0,0), 0.00001) and \
Gf.IsClose(rayDistance, rayDistToNearEnd, 0.00001) and \
Gf.IsClose(lineDistance, 0, 0.00001))
r = Gf.Ray(Gf.Vec3d(), Gf.Vec3d(3, 4, 5))
l = Gf.LineSeg(Gf.Vec3d(1, 0, 0), Gf.Vec3d(4, 4, 5))
(intersects, rayPoint, linePoint, rayDistance, lineDistance) = \
Gf.FindClosestPoints(r, l)
self.assertFalse(intersects)
def test_Methods(self):
l = Gf.LineSeg(Gf.Vec3d(0, 0, 0), Gf.Vec3d(1, 1, 1))
(point, t) = l.FindClosestPoint(Gf.Vec3d(0.5, 0.5, 1))
self.assertTrue(
Gf.IsClose(point, Gf.Vec3d(2. / 3, 2. / 3, 2. / 3), 0.00001),
err("FindClosestPoint"))
self.assertTrue(Gf.IsClose(t, 2. / 3, 0.0001), err("FindClosestPoint"))
l = Gf.LineSeg(Gf.Vec3d(0, 0, 0), Gf.Vec3d(0, 0, 0))
(point, t) = l.FindClosestPoint(Gf.Vec3d(0.5, 0.5, 1))
self.assertTrue(Gf.IsClose(point, Gf.Vec3d(), 0.00001),
err("FindClosestPoint"))
self.assertTrue(Gf.IsClose(t, 0, 0.0001), err("FindClosestPoint"))
# seg on seg
# (parallel case)
l1 = Gf.LineSeg(Gf.Vec3d(0, 0, 0), Gf.Vec3d(1, 1, 1))
l2 = Gf.LineSeg(Gf.Vec3d(1, 0, 0), Gf.Vec3d(2, 1, 1))
self.assertEqual(
Gf.FindClosestPoints(l1, l2)[0], False, err("FindClosestPoints"))
l1 = Gf.LineSeg(Gf.Vec3d(0, 0, 0), Gf.Vec3d(1, 1, 1))
l2 = Gf.LineSeg(Gf.Vec3d(1, 0, 0), Gf.Vec3d(1, -1, 1))
(intersects, p1, p2, t1, t2) = Gf.FindClosestPoints(l1, l2)
self.assertTrue(intersects, err("FindClosestPoints"))
self.assertTrue(
Gf.IsClose(p1, Gf.Vec3d(1. / 3, 1. / 3, 1. / 3), 0.00001),
err("FindClosestPoints"))
self.assertTrue(Gf.IsClose(p2, Gf.Vec3d(1, 0, 0), 0.00001),
err("FindClosestPoints"))
self.assertTrue(Gf.IsClose(t1, 1. / 3, 0.00001))
self.assertTrue(Gf.IsClose(t2, 0, 0.00001))
l1 = Gf.LineSeg(Gf.Vec3d(), Gf.Vec3d())
l2 = Gf.LineSeg(Gf.Vec3d(1, 1, 1), Gf.Vec3d(1, 1, 1))
(intersects, p1, p2, t1, t2) = Gf.FindClosestPoints(l1, l2)
self.assertFalse(intersects, err("FindClosestPoints"))
self.assertTrue(Gf.IsClose(p1, Gf.Vec3d(), 0.00001),
err("FindClosestPoints"))
self.assertTrue(Gf.IsClose(p2, Gf.Vec3d(), 0.00001),
err("FindClosestPoints"))
self.assertTrue(Gf.IsClose(t1, 0, 0.00001))
self.assertTrue(Gf.IsClose(t2, 0, 0.00001))
(intersects, p1, p2, t1, t2) = Gf.FindClosestPoints(l2, l1)
self.assertFalse(intersects, err("FindClosestPoints"))
self.assertTrue(Gf.IsClose(p1, Gf.Vec3d(), 0.00001),
err("FindClosestPoints"))
self.assertTrue(Gf.IsClose(p2, Gf.Vec3d(), 0.00001),
err("FindClosestPoints"))
self.assertTrue(Gf.IsClose(t1, 0, 0.00001))
self.assertTrue(Gf.IsClose(t2, 0, 0.00001))
# line on seg
# (parallel case)
l1 = Gf.Line(Gf.Vec3d(0, 0, 0), Gf.Vec3d(1, 1, 1))
l2 = Gf.LineSeg(Gf.Vec3d(1, 0, 0), Gf.Vec3d(2, 1, 1))
self.assertEqual(
Gf.FindClosestPoints(l1, l2)[0], False, err("FindClosestPoints"))
l1 = Gf.Line(Gf.Vec3d(0, 0, 0), Gf.Vec3d(1, 1, 1))
l2 = Gf.LineSeg(Gf.Vec3d(1, 0, 0), Gf.Vec3d(1, -1, 1))
(intersects, p1, p2, t1, t2) = Gf.FindClosestPoints(l1, l2)
self.assertTrue(intersects, err("FindClosestPoints"))
self.assertTrue(
Gf.IsClose(p1, Gf.Vec3d(1. / 3, 1. / 3, 1. / 3), 0.00001),
err("FindClosestPoints"))
self.assertTrue(Gf.IsClose(p2, Gf.Vec3d(1, 0, 0), 0.00001),
err("FindClosestPoints"))
self.assertTrue(Gf.IsClose(t1, 0.57735, 0.00001))
self.assertTrue(Gf.IsClose(t2, 0, 0.00001))
l1 = Gf.Line(Gf.Vec3d(0, 0, 0), Gf.Vec3d(1, 1, 1))
l2 = Gf.LineSeg(Gf.Vec3d(), Gf.Vec3d())
(intersects, p1, p2, t1, t2) = Gf.FindClosestPoints(l1, l2)
self.assertFalse(intersects, err("FindClosestPoints"))
self.assertTrue(Gf.IsClose(p1, Gf.Vec3d(), 0.00001),
err("FindClosestPoints"))
self.assertTrue(Gf.IsClose(p2, Gf.Vec3d(), 0.00001),
err("FindClosestPoints"))
self.assertTrue(Gf.IsClose(t1, 0, 0.00001))
self.assertTrue(Gf.IsClose(t2, 0, 0.00001))
def test_Constructors(self):
self.assertIsInstance(Gf.LineSeg(), Gf.LineSeg, err("constructor"))
self.assertIsInstance(Gf.LineSeg(Gf.Vec3d(), Gf.Vec3d()), Gf.LineSeg,
err("constructor"))
