public static void UnitTest()
{
xAABB2 aabb1 = new xAABB2();
XUtils.Assert(aabb1.mIsValid == false);
xAABB2 aabb2 = new xAABB2(Vector2.Zero);
xAABB2 aabb3 = new xAABB2(Vector2.Zero, 1f);
xAABB2 aabb4 = new xAABB2(Vector2.Zero, Vector2.Zero);
XUtils.Assert(aabb2.IsValid() && aabb3.IsValid() && aabb4.IsValid());
aabb2.Reset();
XUtils.Assert(!aabb2.IsValid());
Vector2 oneTwo = new Vector2(1f, 2f);
Vector2 negTwoFour = -2f * oneTwo;
Vector2 TwentyTen = new Vector2(20f, 10f);
const float kTol = 0.001f;
aabb2.Set(oneTwo);
XUtils.AssertVal(aabb2.mMin, oneTwo, kTol);
XUtils.AssertVal(aabb2.mMax, oneTwo, kTol);
XUtils.Assert(aabb2.IsValid());
//aabb2.Set( oneTwo, negTwoFour ); inside out, asserts, good
aabb2.Set(negTwoFour, oneTwo);
XUtils.Assert(aabb2.Contains(Vector2.Zero));
XUtils.Assert(!aabb2.Contains(TwentyTen));
XUtils.Assert(aabb2.Contains(negTwoFour));
XUtils.Assert(aabb2.Contains(oneTwo));
XUtils.Assert(!aabb2.Contains(-TwentyTen));
//aabb2.Set( oneTwo, -3f ); asserts on negative radius, good
Vector2 fiveFive = new Vector2(5f, 5f);
Vector2 sixSeven = oneTwo + fiveFive;
Vector2 negFourThree = new Vector2(-4f, -3f);
Vector2 epsilon = new Vector2(kTol, kTol);
aabb2.Set(oneTwo, 5f);
XUtils.Assert(aabb2.Contains(oneTwo));
XUtils.Assert(aabb2.Contains(fiveFive));
XUtils.Assert(aabb2.Contains(negFourThree));
XUtils.Assert(!aabb2.Contains(TwentyTen));
XUtils.Assert(!aabb2.Contains(-TwentyTen));
XUtils.Assert(aabb2.Contains(Vector2.Zero));
XUtils.Assert(aabb2.Contains(negFourThree + epsilon));
XUtils.Assert(!aabb2.Contains(negFourThree - epsilon));
XUtils.Assert(aabb2.Contains(sixSeven - epsilon));
XUtils.Assert(!aabb2.Contains(sixSeven + epsilon));
aabb2.Set(Vector2.Zero);
XUtils.Assert(!aabb2.IsNonDegenerate());
aabb2.Add(Vector2.UnitX);
XUtils.Assert(!aabb2.IsNonDegenerate());
XUtils.Assert(aabb2.Contains(new Vector2(0.5f, 0f)));
aabb2.Add(oneTwo);
XUtils.Assert(aabb2.IsNonDegenerate());
XUtils.Assert(aabb2.Contains(new Vector2(0.5f, 1f)));
aabb2.Reset();
aabb2.Add(Vector2.Zero);
XUtils.Assert(aabb2.IsValid());
aabb2.Reset();
aabb2.Add(-fiveFive);
aabb2.Add(TwentyTen);
XUtils.AssertVal(aabb2.GetMin(), -fiveFive, kTol);
XUtils.AssertVal(aabb2.GetMax(), TwentyTen, kTol);
XUtils.AssertVal(aabb2.GetCenter(), new Vector2(7.5f, 2.5f), kTol);
XUtils.AssertVal(aabb2.GetRadius(), new Vector2(12.5f, 7.5f), kTol);
XUtils.AssertVal(aabb2.GetSize(), new Vector2(25f, 15f), kTol);
XUtils.AssertVal(aabb2.GetArea(), 375f, kTol);
aabb2.Reset();
aabb2.Add(Vector2.Zero);
aabb2.Add(oneTwo);
aabb2.ScaleWorld(4f);
XUtils.AssertVal(aabb2.GetArea(), 32f, kTol);
aabb2.Translate(fiveFive);
Vector2 center2 = new Vector2(7f, 9f);
XUtils.AssertVal(aabb2.GetArea(), 32f, kTol);
XUtils.AssertVal(aabb2.GetCenter(), center2, kTol);
XUtils.Assert(!aabb2.Contains(oneTwo));
XUtils.Assert(aabb2.Contains(new Vector2(6f, 8f)));
//aabb2.ScaleWorld( -1f ); asserts negative scalar, good
//aabb2.ScaleLocal( -50f ); asserts negative scalar, good
aabb2.ScaleLocal(0.25f);
XUtils.AssertVal(aabb2.GetCenter(), center2, kTol);
XUtils.AssertVal(aabb2.GetArea(), 2f, kTol);
XUtils.Assert(!aabb2.Contains(new Vector2(6f, 8f)));
XUtils.Assert(aabb2.Contains(center2));
aabb2.Reset();
aabb2.Add(Vector2.Zero);
aabb2.Add(oneTwo);
aabb2.Resize(new Vector2(0.1f, -0.3f));
XUtils.AssertVal(aabb2.GetArea(), 1.68f, kTol);
XUtils.Assert(!aabb2.Contains(Vector2.Zero));
XUtils.Assert(aabb2.Contains(new Vector2(-0.05f, 1.4f)));
}