def _furthest_point(direction: Point2D, points: List[Point2D]) -> Point2D:
max_dot = 0.0
furthest = None
for point in points:
current_dot = direction.dot_product(point)
if current_dot > max_dot or furthest is None:
max_dot = current_dot
furthest = point
return furthest
def _triple_product_expansion(v1: Point2D, v2: Point2D,
v3: Point2D) -> Point2D:
return v2.mul_by_value(v1.dot_product(v3)) - v3.mul_by_value(
v1.dot_product(v2))