public void FromCenterSize()
{
var r1 = Rect2D.FromCenterSize(40, 10);
Assert.AreEqual(10, r1.Width);
Assert.AreEqual(10, r1.Height);
Assert.AreEqual(35, r1.xMin);
Assert.AreEqual(35, r1.yMin);
Assert.AreEqual(45, r1.xMax);
Assert.AreEqual(45, r1.yMax);
}