def test_generate_plottable_linear_points_between_twopoints(self):
pt_start = Point(1, 1)
pt_end = Point(20, 20)
unit = Vector.create_vector_from_2points(pt_start, pt_end).UnitVector
new_points = Util.generate_plottable_points_between_twopoints(
pt_start, pt_end)
distance_start_end = Point.euclidean_distance(pt_start, pt_end)
for new_point in new_points:
distance_from_start = Point.euclidean_distance(pt_start, new_point)
self.assertTrue(distance_from_start < distance_start_end)
new_unit = Vector.create_vector_from_2points(pt_start,
new_point).UnitVector
dot_product = Vector.dot_product(new_unit, unit)
self.assertAlmostEquals(dot_product, 1.0, delta=0.1)
def test_generate_points_from_circle_model_center_at_0_0_radius_10(self):
center_x = 0
center_y = 0
radius = 100.0
distance = 5
model = CircleModel(center_x, center_y, radius)
points = CircleModel.generate_points_from_circle(model,
distance=distance)
pt: Point
for pt in points:
distance_from_center = math.sqrt((pt.X - center_x)**2 +
(pt.Y - center_y)**2)
self.assertAlmostEqual(distance_from_center, radius, 2)
#compare distance
for index in range(1, len(points)):
point1 = points[index]
point2 = points[index - 1]
actual_distance = Point.euclidean_distance(point1, point2)
self.assertAlmostEqual(distance, actual_distance, delta=2)
