public void OnRender(double timeDelta)
{
double time = (DateTime.UtcNow - engineStartTime).TotalSeconds;
secondCamera.Position = new Vector3d(Math.Sin(time) * 5, 3, Math.Cos(time) * 5);
secondCamera.Rotation = new Vector3d(25, -Math.Atan2(Math.Sin(time), Math.Cos(time)) * 180 / Mathmatics.PI, 0);
RenderEngine.AddCamera(camera);
RenderEngine.AddCamera(secondCamera);
RenderEngine.AddLight(light);
RenderEngine.AddLight(mainLight);
RenderEngine.AddLight(anotherLight);
QueueUI(timeDelta);
RenderEngine.AddToRenderQueue(standardMaterial, treeMesh, Mathmatics.CreateTransformationMatrix(new Vector3d(0, 0, 0), Vector3d.Zero, Vector3d.One), false);
RenderEngine.AddToRenderQueue(standardMaterial, treeMesh, Mathmatics.CreateTransformationMatrix(new Vector3d(0, 0, -5), Vector3d.Zero, Vector3d.One), false);
}