public void Test_Pick()
{
var node1 = new Node ("Node1");
var col1 = new CollisionObject ();
col1.Shape = new BoxShape (1, 1, 1);
node1.Attach (col1);
var node2 = new Node ("Node2");
var col2 = new CollisionObject ();
col2.Shape = new BoxShape (1, 1, 1);
node2.Attach (col2);
var wld = new World ();
wld.AddChild (node1);
wld.AddChild (node2);
node1.Translate (1, 0, 0);
node2.Translate (-1, 0, 0);
wld.CollisionUpdate ();
Assert.AreEqual (null, wld.Pick (new Vector3 (3, -10, 0), new Vector3 (3, 10, 0)));
Assert.AreEqual (node1, wld.Pick (new Vector3 (2, -10, 0), new Vector3 (2, 10, 0)));
Assert.AreEqual (node1, wld.Pick (new Vector3 (1, -10, 0), new Vector3 (1, 10, 0)));
Assert.AreEqual (node1, wld.Pick (new Vector3 (0, -10, 0), new Vector3 (0, 10, 0)));
Assert.AreEqual (node2, wld.Pick (new Vector3 (-1, -10, 0), new Vector3 (-1, 10, 0)));
Assert.AreEqual (node2, wld.Pick (new Vector3 (-2, -10, 0), new Vector3 (-2, 10, 0)));
Assert.AreEqual (null, wld.Pick (new Vector3 (-3, -10, 0), new Vector3 (-3, 10, 0)));
}