public BodyBall(World world) { this.Model = GetModel(); ModelVisual3D visual = new ModelVisual3D(); visual.Content = this.Model; using (CollisionHull hull = CollisionHull.CreateNull(world)) { this.PhysicsBody = new Body(hull, Matrix3D.Identity, 100, new[] { visual }); } this.Radius = 2; this.CreationTime = DateTime.UtcNow; }