private IView _view = null; // the view using this drawing model
#endregion Fields
#region Constructors
/// <summary>
/// Constructor.
/// </summary>
/// <param name="model">The tree model to draw.</param>
/// <param name="view">The view using this drawing model.</param>
public Renderer(Model model, IView view)
{
// initialize mapping
_nodeViewMap = new Dictionary<INode, NodeView>();
_view = view;
_model = model;
_screenPlaneOrigin = new ScreenVector();
_screenPlaneMaxPoint = new ScreenVector();
_ray = new double[4];
_ray[0] = model.Length;
for (int i = 1; i < _ray.Length; i++)
{
_ray[i] = (_ray[0] + _ray[i - 1]) / (1 + (_ray[0] * _ray[i - 1]));
}
NodeModel __rootNodeModel = model.Root;
if (__rootNodeModel.IsLeaf)
{
_rootNodeView = new NodeView(null, __rootNodeModel, this);
}
else
{
_rootNodeView = new CompositeNodeView(null, (CompositeNodeModel)__rootNodeModel, this);
}
this.Background = new LinearGradientBrush(Colors.Black, Colors.DarkBlue, 90);
CompositionTarget.Rendering += UpdatePosition;
}
private NodeView _node = null; // represented node
#endregion Fields
#region Constructors
/// <summary> Constructor.
/// </summary>
/// <param name="node">The represented node.</param>
public NodeLabel(NodeView node)
{
_node = node;
this.Content = _node.NodeName;
this.HorizontalAlignment = HorizontalAlignment.Center;
this.VerticalAlignment = VerticalAlignment.Center;
this.FontFamily = new FontFamily("Arial");
this.FontSize = 11;
this.Padding = new Thickness(1);
}
/// <summary> Translate the hyperbolic tree
/// so that the given node is put at the origin of the hyperbolic tree.
/// </summary>
/// <param name="node">The given <see cref="HtDrawNode"/></param>
public void TranslateToOrigin(NodeView node)
{
_view.StopMouseListening();
_velocity = new EuclidianVector(node.Coordinates);
_animatedNode = node;
}
/// <summary> Adds the <see cref="NodeView"/> as a children.
/// </summary>
/// <param name="child">The child.</param>
private void AddChild(NodeView child)
{
_childNodes.Add(child);
_geodesics.Add(child, new Geodesic(Coordinates, child.Coordinates));
}
private void UpdatePosition(object sender, EventArgs e)
{
if (_animatedNode != null)
{
_velocity.X *= 0.90;
_velocity.Y *= 0.90;
if (_velocity.D() > 0.01)
this.Translate(_animatedNode.OldCoordinates, _velocity);
else
{
_animatedNode = null;
this.EndTranslation();
_view.StartMouseListening();
}
}
}
/// <summary> Translate the hyperbolic tree
/// so that the given node is put at the origin of the hyperbolic tree.
/// </summary>
/// <param name="node">The given <see cref="HtDrawNode"/></param>
public void TranslateToOrigin(NodeView node)
{
_view.StopMouseListening();
_velocity = new EuclidianVector(node.Coordinates);
_animatedNode = node;
}
/// <summary> Maps a <see cref="IHtNode"/> to a <see cref="HtDrawNode"/>.
/// Used for backwards finding a <see cref="HtDrawNode"/> instance for a given
/// <see cref="IHtNode"/>.
/// </summary>
/// <param name="htNode">The <see cref="IHtNode"/></param>
/// <param name="drawNode">the <see cref="HtDrawNode"/> for the given <see cref="IHtNode"/></param>
public void MapNode(INode htNode, NodeView drawNode)
{
_nodeViewMap.Add(htNode, drawNode);
}