Exemplo n.º 1
0
        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)));
        }