def test_self_tangent(self):
"test if tangent is part of circle"
circle1 = Circle()
circle2 = Circle(Vec2D(0, 2), 1)
tan = Tangent(Vec2D(0, 1), circle1, None, Vec2D(0, 2), circle2, None)
self.assertFalse(circle1.intersects_tangent(tan))
self.assertFalse(circle2.intersects_tangent(tan))
def test_self_tangent(self):
"test if tangent is part of circle"
circle1 = Circle()
circle2 = Circle(Vec2D(0, 2), 1)
tan = Tangent(Vec2D(0, 1), circle1, None, Vec2D(0, 2), circle2, None)
self.assertFalse(circle1.intersects_tangent(tan))
self.assertFalse(circle2.intersects_tangent(tan))
def test_contains_tangent(self):
"test start and end inside circle"
circle = Circle()
tangent = Tangent(Vec2D(0, -0.5), None, None, Vec2D(0, 0.5), None,
None)
self.assertFalse(circle.intersects_tangent(tangent))
def test_nonintersecting_tangent(self):
"test intersection with nonintersecting tangent"
circle = Circle()
tan = Tangent(Vec2D(10, 10), None, None, Vec2D(11, 11), None, None)
self.assertFalse(circle.intersects_tangent(tan))
def test_touching_tangent(self):
"test start and end inside circle"
circle = Circle()
tangent = Tangent(Vec2D(0, 1), None, None, Vec2D(0, 2), None, None)
self.assertTrue(circle.intersects_tangent(tangent))
def test_contains_tangent(self):
"test start and end inside circle"
circle = Circle()
tangent = Tangent(Vec2D(0, -0.5), None, None, Vec2D(0, 0.5), None, None)
self.assertFalse(circle.intersects_tangent(tangent))
def test_fullintersection_tangent(self):
"test 2 intersection points"
circle = Circle()
tangent = Tangent(Vec2D(0, -2), None, None, Vec2D(0, 2), None, None)
self.assertTrue(circle.intersects_tangent(tangent))
def test_intersecting_tangent(self):
"test single intersection point"
circle = Circle()
tangent = Tangent(Vec2D(), None, None, Vec2D(0, 2), None, None)
self.assertTrue(circle.intersects_tangent(tangent))
def test_nonintersecting_tangent(self):
"test intersection with nonintersecting tangent"
circle = Circle()
tan = Tangent(Vec2D(10, 10), None, None, Vec2D(11, 11), None, None)
self.assertFalse(circle.intersects_tangent(tan))
def test_touching_tangent(self):
"test start and end inside circle"
circle = Circle()
tangent = Tangent(Vec2D(0, 1), None, None, Vec2D(0, 2), None, None)
self.assertTrue(circle.intersects_tangent(tangent))
def test_fullintersection_tangent(self):
"test 2 intersection points"
circle = Circle()
tangent = Tangent(Vec2D(0, -2), None, None, Vec2D(0, 2), None, None)
self.assertTrue(circle.intersects_tangent(tangent))
def test_intersecting_tangent(self):
"test single intersection point"
circle = Circle()
tangent = Tangent(Vec2D(), None, None, Vec2D(0, 2), None, None)
self.assertTrue(circle.intersects_tangent(tangent))