archipack_2d.py 文件源码

def rotate(self, a):
        """
            Rotate center so we rotate ccw arround p0
        """
        ca = cos(a)
        sa = sin(a)
        rM = Matrix([
            [ca, -sa],
            [sa, ca]
            ])
        p0 = self.p0
        self.c = p0 + rM * (self.c - p0)
        dp = p0 - self.c
        self.a0 = atan2(dp.y, dp.x)
        return self

    # make offset for line / arc, arc / arc