public bool Contains(Vector3 p) { Vector3 c = center; return ((c.x - r.x < p.x) && (c.x + r.x >= p.x) && (c.y - r.y < p.y) && (c.y + r.y >= p.y) && (c.z - r.z < p.z) && (c.z + r.z >= p.z)); }