public void WhenMeasuringDistanceToPointsOnAllSidesResultsAreValid() { var someAabb = new BoundingRectangle(100, 100, 120, 120); var diagonalPoint = new Vector2(121, 121); var topSidePoint = new Vector2(110, 99); var rightSidePoint = new Vector2(121, 110); var bottomSidePoint = new Vector2(110, 121); var leftSidePoint = new Vector2(99, 110); var farAwayPoint = new Vector2(-100000000, 0); var containedPoint = new Vector2(110, 110); var edgePoint = new Vector2(100, 110); Assert.That(someAabb.DistanceTo(diagonalPoint), Is.EqualTo(1.41421354f)); Assert.That(someAabb.DistanceTo(topSidePoint), Is.EqualTo(1f)); Assert.That(someAabb.DistanceTo(rightSidePoint), Is.EqualTo(1f)); Assert.That(someAabb.DistanceTo(bottomSidePoint), Is.EqualTo(1f)); Assert.That(someAabb.DistanceTo(leftSidePoint), Is.EqualTo(1f)); Assert.That(someAabb.DistanceTo(farAwayPoint), Is.EqualTo(100000104f)); Assert.That(someAabb.DistanceTo(containedPoint), Is.EqualTo(-10f)); Assert.That(someAabb.DistanceTo(edgePoint), Is.EqualTo(0f)); }