* Creates a default tree trunk state with given radius and height and default 3D state.
*/
public TreeTrunkState createRandomTreeTrunkState(float radius, float height) {
int creationMillis = Randomizer.randomBetween(0, 100) * 1000;
TreeTrunk3DStateFactory trunk3DStateFactory = new TreeTrunk3DStateFactory();
TreeTrunk3DState leaf3dState = trunk3DStateFactory.createRandomTreeTrunk3DState();
return new TreeTrunkState(creationMillis, radius, height, leaf3dState);
}