def resolve(self):
		dx = self.p2.x - self.p1.x
		dy = self.p2.y - self.p1.y
		dist = math.sqrt((dx ** 2) + (dy ** 2))
		exr = dist / ((dist - self.length) / 2)
		nx = exr * dx
		ny = exr * dy
		if not self.p1.fixed:
			self.p1.x += nx
			self.p1.y += ny
		else
			self.p2.x -= nx
			self.p2.y -= ny
		if not self.p2.fixed:
			self.p2.x -= nx
			self.p2.y -= ny
		else
			self.p1.x += nx
			self.p1.y += ny