transform.py 文件源码

def skew(self, x=0, y=0):
        """Return a new transformation, skewed by x and y.

        Example:
            >>> import math
            >>> t = Transform()
            >>> t.skew(math.pi / 4)
            <Transform [1 0 1 1 0 0]>
            >>>
        """
        import math
        return self.transform((1, math.tan(y), math.tan(x), 1, 0, 0))