/// <summary>
/// Tries to remove the specified component from the current node.
/// </summary>
/// <param name="transform">The transformation component to remove.</param>
/// <returns>True if the component was removed successfully.</returns>
public bool RemoveChild(TransformComponent transform)
{
if (_children.Remove(transform))
{
// Remove the reference to the current node
transform._parent = null;
// Notify the caller that the component has been removed
return true;
}
// Component could not be found
return false;
}
/// <summary>
/// Checks whether the current transformation component is a child of
/// the specified component.
/// </summary>
/// <param name="transform">The transformation component that might be the parent.</param>
/// <returns>True if the current component is a child of the specified one.</returns>
public bool IsChildOf(TransformComponent transform)
{
return _parent == transform;
}
/// <summary>
/// Checks whether the current transformation component is the parent
/// of the specified component.
/// </summary>
/// <param name="transform">The transformation component that might be the child node.</param>
/// <returns>True if the current component is the parent of the specified one.</returns>
public bool IsParentOf(TransformComponent transform)
{
return _children.Contains(transform);
}
/// <summary>
/// Adds a transformation component to the current node to allow
/// hierarchical transformation.
/// </summary>
/// <param name="transform">The transformation component to attach.</param>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="transform"/> component is null.
/// </exception>
public void AddChild(TransformComponent transform)
{
if (transform == null)
throw new ArgumentNullException("The specified transformation component is null.");
// Detach from the old parent
if (transform._parent != null && transform._parent != this)
transform._parent.RemoveChild(transform);
// Attach the component to the current node, if not already done.
if (transform._parent == null)
{
// Assign the parent reference
transform._parent = this;
// Add the component to the current collection
_children.Add(transform);
}
}
