C#

private void InitElements(Scene scene)
{
    var objectRoot = new SharpGL.SceneGraph.Primitives.Folder() { Name = "Root" };
    scene.SceneContainer.AddChild(objectRoot);
    // This implements free rotation(with translation and rotation).
    var camera = GetCamera();
    float cmX = camera.Position.X; float cmY = camera.Position.Y; float cmZ = camera.Position.Z;
    float tgX = camera.Target.X; float tgY = camera.Target.Y; float tgZ = camera.Target.Z;
    float upX = camera.UpVector.X; float upY = camera.UpVector.Y; float upZ = camera.UpVector.Z;
    objectArcBallEffect = new ArcBallEffect(cmX, cmY, cmZ, tgX, tgY, tgZ, upX, upY, upZ);
    objectRoot.AddEffect(objectArcBallEffect);
    var axisRoot = new SharpGL.SceneGraph.Primitives.Folder() { Name = "axis root" };
    scene.SceneContainer.AddChild(axisRoot);
    axisArcBallEffect = new ArcBallEffect(cmX, cmY, cmZ, tgX, tgY, tgZ, upX, upY, upZ);
    axisRoot.AddEffect(axisArcBallEffect);
    InitLight(objectRoot);
    InitAxis(objectRoot);
    InitAxis(axisRoot);
    InitFrameElement(6, 24, 7, objectRoot);
}

private void btnAddEllement_Click(object sender, EventArgs e)
        {
            var objectRoot = new SharpGL.SceneGraph.Primitives.Folder() { Name = "Root" };
            var scene = this.sceneControl1.Scene;
            addCylinder(objectRoot, 50, 30, 100, 5);
            scene.SceneContainer.AddChild(objectRoot);
        }