private void PaintGraph(EdgePaintMode mode)
{
uxCanvas.Children.Clear();
PaintNodes();
PaintEdges(mode);
UpdateTooltips();
}
private void PaintEdges(EdgePaintMode mode)
{
// If connectedness is reduced, just show all the edges and highlight the tree ones
if (Interconnectedness < 1.0)
{
mode = EdgePaintMode.Full;
}
IEnumerable <Edge> edges;
switch (mode)
{
case EdgePaintMode.None: edges = new List <Edge>(); break;
case EdgePaintMode.Full: edges = _graph.Edges.Where(x => x.To.Index > x.From.Index); break;
case EdgePaintMode.Tree: edges = _graph.TreeEdges; break;
default:
throw new Exception();
}
foreach (Edge edge in edges)
{
Point from = (Point)edge.From.Data;
Point to = (Point)edge.To.Data;
if (edge.Weight > 2 * RADIUS)
{
from = NudgeByRadius((Point)edge.From.Data, (Point)edge.To.Data, RADIUS);
to = NudgeByRadius((Point)edge.To.Data, (Point)edge.From.Data, RADIUS);
}
bool isTreeEdge = (edge == edge.From.EdgeToParent || edge.BackEdge == edge.To.EdgeToParent);
Line line = new Line()
{
Stroke = isTreeEdge ? Brushes.Red : Brushes.LightGray,
StrokeThickness = isTreeEdge ? 4.0 : 1.0,
X1 = from.X,
Y1 = from.Y,
X2 = to.X,
Y2 = to.Y,
Tag = edge,
};
uxCanvas.Children.Add(line);
}
}
