public static SKMatrix MakeTranslation(float dx, float dy)
{
if (dx == 0 && dy == 0)
return MakeIdentity();
return new SKMatrix()
{
scaleX = 1,
scaleY = 1,
transX = dx,
transY = dy,
persp2 = 1,
#if OPTIMIZED_SKMATRIX
typeMask = Mask.Translate | Mask.RectStaysRect
#endif
};
}