Lines Matching refs:xx
88 def __init__(self, xx=1, xy=0, yx=0, yy=1, dx=0, dy=0):
99 self.__affine = xx, xy, yx, yy, dx, dy
111 xx, xy, yx, yy, dx, dy = self.__affine
112 return (xx*x + yx*y + dx, xy*x + yy*y + dy)
123 xx, xy, yx, yy, dx, dy = self.__affine
124 return [(xx*x + yx*y + dx, xy*x + yy*y + dy) for x, y in points]
238 xx, xy, yx, yy, dx, dy = self.__affine
239 det = xx*yy - yx*xy
240 xx, xy, yx, yy = yy/det, -xy/det, -yx/det, xx/det
241 dx, dy = -xx*dx - yx*dy, -xy*dx - yy*dy
242 return self.__class__(xx, xy, yx, yy, dx, dy)
