private void _RemoveChild(GLModel3D model)
{
if (model.Parent != this)
{
throw new InvalidOperationException("The logical parent is error");
}
_children.Remove(model);
model.Parent = null;
}
private void _AddChild(GLModel3D model)
{
if (model.Parent != null)
{
throw new InvalidOperationException("The model has a logical parent");
}
if (model.Visual != null)
{
throw new InvalidOperationException("The model has associated visual");
}
_children.Add(model);
model.Parent = this;
}
public void RemoveChild(GLModel3D model)
{
_RemoveChild(model);
_OnChildrenChanged();
}
public void AddChild(GLModel3D model)
{
_AddChild(model);
_OnChildrenChanged();
}