public override void Initialize(Collidable newCollidableA, Collidable newCollidableB)
{
collidableA = newCollidableA as ConvexCollidable;
collidableB = newCollidableB as ConvexCollidable;
pairTester.Initialize(newCollidableA, newCollidableB);
if (collidableA == null || collidableB == null)
{
throw new Exception("Inappropriate types used to initialize pair tester.");
}
}