def __sub__(self, other: Point or Iterable or Vector):
if type(other) == Vector:
return Vector(self.start_point - other.start_point, self.end_point - other.end_point)
other = Point.check_Point(other)
start = self.start_point - other
end = self.end_point - other
return Vector(start, end)
def move_to_point(self, new_start_point: Point or Iterable) -> None:
"""
Перемещает начало вектора к заданной точке.
:param new_start_point: Точка куда необходимо перенести вектор.
"""
new_start_point = Point.check_Point(new_start_point)
dif_val = self.start_point - new_start_point
self.start_point -= dif_val
self.end_point -= dif_val
def __init__(self, point1: Point or Iterable, point2: Point or Iterable = None):
"""
Создает вектор плоскости. Если дана только одна точка, то вектор счетается радиус-вектором(начало в (0,0)).
:param point1: Точка начала вектора относительно С.О.
:param point2: Точка конца вектора относительно С.О.
"""
point1 = Point.check_Point(point1)
if type(point2) is None:
if point1.z is None:
self.start_point: Point = Point(0, 0)
else:
self.start_point: Point = Point(0, 0, 0)
self.end_point: Point = point1
else:
point2 = Point.check_Point(point2)
if (point1.z is None and point2.z is None) or (point1.z is not None and point2.z is not None):
self.start_point: Point = point1
self.end_point: Point = point2
else:
raise TypeError("Flat and 3D points used in one Vector obj.")