/// <summary>
/// Initializes a new instance of the <see cref="BalloonTreeLayoutAlgorithm{TVertex,TEdge,TGraph}"/> class.
/// </summary>
/// <param name="visitedGraph">Graph to layout.</param>
/// <param name="selectedVertex">Root vertex.</param>
/// <param name="parameters">Optional algorithm parameters.</param>
public BalloonTreeLayoutAlgorithm(
[NotNull] TGraph visitedGraph,
[NotNull] TVertex selectedVertex,
[CanBeNull] BalloonTreeLayoutParameters parameters = null)
: this(visitedGraph, null, selectedVertex, parameters)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="BalloonTreeLayoutAlgorithm{TVertex,TEdge,TGraph}"/> class.
/// </summary>
/// <param name="visitedGraph">Graph to layout.</param>
/// <param name="verticesPositions">Vertices positions.</param>
/// <param name="selectedVertex">Root vertex.</param>
/// <param name="parameters">Optional algorithm parameters.</param>
public BalloonTreeLayoutAlgorithm(
[NotNull] TGraph visitedGraph,
[CanBeNull] IDictionary <TVertex, Point> verticesPositions,
[NotNull] TVertex selectedVertex,
[CanBeNull] BalloonTreeLayoutParameters parameters = null)
: base(visitedGraph, verticesPositions, parameters)
{
if (selectedVertex == null)
{
throw new ArgumentNullException(nameof(selectedVertex));
}
if (!visitedGraph.ContainsVertex(selectedVertex))
{
throw new ArgumentException("The provided vertex is not part of the graph.", nameof(selectedVertex));
}
_root = selectedVertex;
}