def testLineProps(self):
L1 = Line(Point(0, 0), Point(1, 1))
L2 = Line(Point(-1, -3), Point(6, 2))
Lo = Line(Point(2, 2), Point(7, 7))
Lp = Line(Point(0, -1), Point(1, 0))
Lr = Line(Point(2, 0), Point(0, 2))
Lv = Line(Point(1, 2), Point(1, 4))
Lh = Line(Point(3, 5), Point(-4, 5))
self.assertFalse(L1.is_horizontal)
self.assertFalse(L1.is_vertical)
self.assertTrue(Lv.is_vertical)
self.assertTrue(Lh.is_horizontal)
self.assertEqual(Lh.slope, 0)
self.assertEqual(Lh.intercept, 5)
self.assertEqual(Lv.slope, float("inf"))
self.assertEqual(Lv.intercept, 1)
self.assertEqual(L1.slope, 1)
self.assertEqual(L1.intercept, 0)
self.assertFalse(L1.is_overlapping(L2))
self.assertTrue(L1.is_overlapping(Lo))
self.assertFalse(L1.is_perpendicular(L2))
self.assertTrue(L1.is_perpendicular(Lr))
self.assertFalse(L1.is_parallel(L2))
self.assertTrue(L1.is_parallel(Lp))
def testPointOfIntersection(self):
L1 = Line(Point(0, 0), Point(1, 1))
L2 = Line(-2, 1, 3)
p = Point(-3, -3)
self.assertEqual(L1.point_of_intersection(L2), p)
def testPerpendicularThroughPoint(self):
L1 = Line(Point(0, 0), Point(1, 1))
Lr = Line(Point(2, 0), Point(0, 2))
p = Point(1, 1)
self.assertEqual(L1.perpendicular_through_point(p), Lr)
def testParallelThroughPoint(self):
L1 = Line(Point(0, 0), Point(1, 1))
Lp = Line(Point(0, -1), Point(1, 0))
p = Point(2, 1)
self.assertEqual(L1.parallel_through_point(p), Lp)
