public void drawPath(GraphState graph, Canvas canvas)
{
if (graph.nodes == null || graph.nodes.Count == 0)
return;
var affectedNodeIndexes = new List<int>();
foreach (var edge in graph.edges)
{
affectedNodeIndexes.Add(edge.Item1);
affectedNodeIndexes.Add(edge.Item2);
if (edgesByIndexPair.ContainsKey(edge))
foreach (var line in edgesByIndexPair[edge])
line.Stroke = edgePathStroke;
var reverseEdge = new Tuple<int, int>(edge.Item2, edge.Item1);
if (edgesByIndexPair.ContainsKey(reverseEdge))
foreach (var line in edgesByIndexPair[reverseEdge])
line.Stroke = edgePathStroke;
}
affectedNodeIndexes = affectedNodeIndexes.Distinct().ToList();
foreach (int nodeIndex in affectedNodeIndexes)
nodesByIndex[nodeIndex].Stroke = nodePathIntermediateStroke;
foreach (var node in graph.nodes)
nodesByIndex[node.Key].Stroke = nodePathEndStroke;
}
public void drawGraph(GraphState graph, Canvas canvas)
{
canvas.Children.Clear();
if (graph.nodes == null || graph.nodes.Count == 0)
return;
nodesByIndex = new Dictionary<int, Rectangle>();
edgesByIndexPair = new Dictionary<Tuple<int, int>, List<Line>>();
canvas.Height = (nodeHeight + nodeDistance) * graph.nodes.Count + nodeOffsetTop;
canvas.Height = (canvas.Height > 380) ? canvas.Height : 380;
canvas.Width = nodeOffsetLeft + nodeWidth + edgeOffsetLeft + edgeDistance * (graph.edges.Count + 1);
canvas.Width = (canvas.Width > 950) ? canvas.Width : 950;
int leftEdgeOffset = nodeOffsetLeft + nodeWidth + edgeOffsetLeft;
Dictionary<int, int> topNodeOffsets = calculateOffsetsForNodes(graph.nodes);
foreach (var node in graph.nodes)
drawNode(node.Key, node.Value, canvas, topNodeOffsets);
foreach (var edge in graph.edges)
drawEdge(edge.Item1, edge.Item2, canvas, topNodeOffsets, ref leftEdgeOffset);
}