def test_same_line_is_parallel():
line = Line(Point(0, 0), 1)
l2 = Line(Point(1, 100), 0)
l3 = Line(Point(2, -23), math.inf)
assert line.is_parallel_to(line)
assert l2.is_parallel_to(l2)
assert l3.is_parallel_to(l3)
def test_create_line_seg():
line = Line(Point(0, 0), 3 / 4)
length = 10
seg = line.create_line_segment_of_length(length)
assert seg.length == length
points = (Point(4, 3), Point(-4, -3))
assert seg.p1 in points
assert seg.p2 in points
def test_parallel_lines_are_parallel():
line = Line(Point(0, 0), 1)
l2 = Line(Point(1, 100), 1)
assert line.is_parallel_to(l2)
line.slope = math.inf
l2.slope = math.inf
assert line.is_parallel_to(l2)
line.slope = 0
l2.slope = 0
assert line.is_parallel_to(l2)
def test_create_touching():
c1 = Circle(Point(0, 0), 1)
c2 = c1.make_circle_which_touches(0, 1)
assert c2.radius == 1
assert c2.point == Point(2, 0)
c2 = c1.make_circle_which_touches(90, 1)
assert c2.point == Point(0, 2)
c2 = c1.make_circle_which_touches(180, 1)
assert c2.point == Point(-2, 0)
c2 = c1.make_circle_which_touches(270, 1)
assert c2.point == Point(0, -2)
def test_rotation_about_origin():
origin = Point(0, 0)
point = Point(1, 1)
assert point.rotate_about(origin, 90) == Point(-1, 1)
assert point.rotate_about(origin, 45) == Point(0, math.sqrt(2))
assert point.rotate_about(origin, 180) == Point(-1, -1)
def test_create_line_seg_vert_horr():
line = Line(Point(0, 0), 0)
length = 10
seg = line.create_line_segment_of_length(length)
assert seg.length == length
points = (Point(5, 0), Point(-5, 0))
assert seg.p1 in points
assert seg.p2 in points
line.slope = math.inf
length = 10
seg = line.create_line_segment_of_length(length)
assert seg.length == length
points = (Point(0, 5), Point(0, -5))
assert seg.p1 in points
assert seg.p2 in points
def test_make_perpendicular():
line = Line(Point(0, 0), 0)
perp_point = Point(0, 10)
perp = line.create_line_perpendicular(perp_point)
assert perp.slope == math.inf
assert perp.p == perp_point
line.slope = math.inf
perp_point = Point(10, 0)
perp = line.create_line_perpendicular(perp_point)
assert perp.slope == 0
assert perp.p == perp_point
line.slope = 1
perp_point = Point(-10, 10)
perp = line.create_line_perpendicular(perp_point)
assert perp.slope == -1
assert perp.p == perp_point
def test_point_inside():
p = Polygon([Point(0, 0), Point(0, 10), Point(10, 10), Point(10, 0)])
assert p.point_inside(Point(5, 5))
def test_touching_intersection():
c1 = Circle(Point(0, 0), 1)
c2 = Circle(Point(2, 0), 1)
assert c1.intersects(c2)
def test_simple_intersection():
# Point of one is within the radius of another
c1 = Circle(Point(0, 0), 2)
c2 = Circle(Point(1, 0), 1)
assert c1.intersects(c2)
def test_create_with_two_points():
r = Rect(Point(0, 0), Point(10, 10))
assert len(r.verts) == 4
def test_create_rect():
r = Rect(Point(0, 0), width=20, height=10)
for p in [Point(0, 0), Point(0, 10), Point(20, 10), Point(20, 0)]:
assert p in r.verts
r = Rect(Point(0, 0), Point(20, 10))
for p in [Point(0, 0), Point(0, 10), Point(20, 10), Point(20, 0)]:
assert p in r.verts
def test_line_length_vert():
line = LineSeg(Point(0, 0), Point(0, 50))
assert line.length == 50
def test_line_length_hor():
line = LineSeg(Point(0, 0), Point(100, 0))
assert line.length == 100
def test_half_along_is_half_y_axis():
line = LineSeg(Point(0, 0), Point(100, 0))
assert Point(50, 0) == line.point_along(.5)
line = LineSeg(Point(25, 0), Point(75, 0))
assert Point(50, 0) == line.point_along(.5)
def test_create_with_point_and_wh():
assert Rect(Point(0, 0), width=10, height=10)
def test_create_square():
r = Rect(Point(0, 0), width=10, height=10)
for p in [Point(0, 0), Point(0, 10), Point(10, 10), Point(10, 0)]:
assert p in r.verts
r = Rect(Point(0, 0), Point(10, 10))
for p in [Point(0, 0), Point(0, 10), Point(10, 10), Point(10, 0)]:
assert p in r.verts
def test_step_too_far_is_none():
line = LineSeg(Point(0, 0), Point(0, 50))
assert line.step_along(51) is None
def test_create_fails_with_too_many_params():
with pytest.raises(ValueError):
Rect(Point(0, 0), Point(1, 1), 10)
def test_step_for_dist_is_second_point():
p2 = Point(0, 50)
line = LineSeg(Point(0, 0), p2)
assert line.step_along(line.length) is p2
def test_outline():
p = Polygon([Point(0, 0), Point(0, 1), Point(1, 0)])
assert 3 == len(list(p.outline()))
def test_step_along():
line = LineSeg(Point(0, 0), Point(0, 50))
assert line.step_along(10) == Point(0, 10)
def test_simple_intersection2():
c1 = Circle(Point(0, 0), 2)
c2 = Circle(Point(3, 0), 2)
assert c1.intersects(c2)
def test_three_unique_points():
Polygon([Point(0, 0), Point(0, 1), Point(1, 0)])
def test_simple_creation():
circle = Circle(Point(0, 0), 1)
def test_non_unique_point():
with pytest.raises(ValueError):
Polygon([Point(0, 0), Point(0, 1), Point(0, 0)])
def test_self_intersecting():
circle = Circle(Point(0, 0), 1)
assert circle.intersects(circle)
def test_float_points():
# Should this fail? Not checking right now
Polygon([Point(0.001, 0), Point(0, 1.1), Point(0, 0)])
def test_point_outside():
p = Polygon([Point(0, 0), Point(0, 10), Point(10, 10), Point(10, 0)])
assert not p.point_inside(Point(-1, -1))
def test_less_than_three_points():
with pytest.raises(ValueError):
Polygon([Point(0, 0), Point(1, 0)])