def _radius_from_point_and_angle(self, point, angle):
line = QLineF()
line.setP1(point)
line.setAngle(angle)
normal = line.normalVector()
normal.setLength(self.magic_number / 2)
return QPointF(normal.dx(), normal.dy())
def apply_rotation(self, angle, center):
"""Applies rotation.
Args:
angle (float): The angle in degrees.
center (QPoint): Rotates around this point.
"""
line = QLineF(center, self.pos())
line.setAngle(line.angle() + angle)
self.setPos(line.p2())
self.update_arcs_line()
def calculatePerpendicularPoint(self, startingPoint, distance, line):
labelHelperLine = QLineF()
labelHelperLine.setP1(startingPoint)
labelHelperLine.setAngle(line.angle() + 90)
labelHelperLine.setLength(distance)
return labelHelperLine.p2()
