private IEnumerable <PrismCollision> PotentialCollisions()
{
QuadTree quadtree = new QuadTree(new Rect(0, 0, 10, 10), 0, null);
for (int i = 0; i < prisms.Count; i++)
{
Debug.Log("1");
prisms[i].check = false;
quadtree.Addprism(prisms[i]);
}
foreach (PrismCollision check in QuadtreeRecursion(quadtree))
{
yield return(check);
}
}