def intersect(l1, l2):
""" returns True if linesegments l1 and l2 intersect. False otherwise."""
# Z muss 1 sein!
g1 = Gerade(HomVec3(l1[0][0], l1[0][1], 1, 1), HomVec3(l1[1][0], l1[1][1], 1, 1))
g2 = Gerade(HomVec3(l2[0][0], l2[0][1], 1, 1), HomVec3(l2[1][0], l2[1][1], 1, 1))
c = g1.schnittpunkt2D(g2)
return c is not None
def test_schneide(self):
g1 = Gerade(HomVec3(1.5, 3, 0, 1), HomVec3(4.5, 3, 0, 1))
g2 = Gerade(HomVec3(3, 1.5, 0, 1), HomVec3(3, 4.5, 0, 1))
s = g1.schnittpunkt2D(g2)
self.assertEqual(3.0, s.x)
self.assertEqual(3.0, s.y)
self.assertEqual(0.0, s.z)
self.assertEqual(1.0, s.w)