public void GetFieldOfViewTest()
    {
      float fieldOfView;
      fieldOfView = PerspectiveViewVolume.GetFieldOfView(2, 1);
      Assert.IsTrue(Numeric.AreEqual(MathHelper.ToRadians(90), fieldOfView));

      fieldOfView = PerspectiveViewVolume.GetFieldOfView(1.1547005f, 1);
      Assert.IsTrue(Numeric.AreEqual(MathHelper.ToRadians(60), fieldOfView));
    }
 public void GetFieldOfViewException2()
 {
     PerspectiveViewVolume.GetFieldOfView(1, 0);
 }
 public void GetFieldOfViewException()
 {
     PerspectiveViewVolume.GetFieldOfView(-0.1f, 1);
 }