/// <summary>
/// Get the single canvas model.
///
/// Singelton get instance.
/// </summary>
/// <returns>Returns instance, or null if user interface is not ready.</returns>
public static CanvasModel GetCanvasModel()
{
if (instance == null)
{
if (MainPage.CanvasView == null)
{
return(null);
}
instance = new CanvasModel();
}
return(instance);
}
// Update changes made to this object on screen.
private void Update()
{
CanvasModel.GetCanvasModel().Update(this);
}