pdf.py 文件源码

 复制代码def mergeRotatedScaledTranslatedPage(self, page2, rotation, scale, tx, ty):
        translation = [[1, 0, 0],
                       [0, 1, 0],
                       [tx,ty,1]]
        rotation = math.radians(rotation)
        rotating = [[math.cos(rotation), math.sin(rotation),0],
                    [-math.sin(rotation),math.cos(rotation), 0],
                    [0,                  0,                  1]]
        scaling = [[scale,0,    0],
                   [0,    scale,0],
                   [0,    0,    1]]
        ctm = utils.matrixMultiply(rotating, scaling)
        ctm = utils.matrixMultiply(ctm, translation)

        return self.mergeTransformedPage(page2, [ctm[0][0], ctm[0][1],
                                                 ctm[1][0], ctm[1][1],
                                                 ctm[2][0], ctm[2][1]])

    ##
    # Applys a transformation matrix the page.
    #
    # @param ctm   A 6 elements tuple containing the operands of the
    #              transformation matrix