class Magick::RVG::Utility::GraphicContext

def affine(sx, rx, ry, sy, tx, ty)
    sx, rx, ry, sy, tx, ty = Magick::RVG.convert_to_float(sx, rx, ry, sy, tx, ty)
    @gc.affine(sx, rx, ry, sy, tx, ty)
    @text_attrs.set_affine(sx, rx, ry, sy, tx, ty)
    nil
end