public Window(FPoint topLeft, FPoint bottomRight)
{
Domain = new PointRange(topLeft.X, bottomRight.X);
Range = new PointRange(bottomRight.Y, topLeft.Y);
}
public Window(double x0, double x1, double y0, double y1)
{
Domain = new PointRange(x0, x1);
Range = new PointRange(y0, y1);
}