/// <summary>
///
/// </summary>
/// <param name="cds"></param>
/// <param name="dn"></param>
public static void DrawNode(
CanvasDrawingSession cds,
DrawableVertex dn)
{
//cds.DrawCircle(dn.Position, Defines.VERTEX_SIZE, Defines.DEFAULT_NODE_COLOR, Defines.NODE_LINE_WIDTH);
cds.DrawGeometry(dn.Circle, Defines.DEFAULT_NODE_COLOR, Defines.NODE_LINE_WIDTH);
}
/// <summary>
///
/// </summary>
/// <param name="appCtx"></param>
/// <param name="canvas"></param>
/// <param name="drawableEdges"></param>
/// <param name="drawableVertices"></param>
public static void LayoutDGraphRandom(
AppContext appCtx,
CanvasControl canvas,
Dictionary <Guid, DrawableEdge> drawableEdges,
Dictionary <Guid, DrawableVertex> drawableVertices)
{
drawableEdges.Clear();
drawableVertices.Clear();
foreach (KeyValuePair <Guid, UVertex> kvp in appCtx.CurrentGraph.Vertices)
{
Int32 min_x = Defines.VERTEX_SIZE;
Int32 min_y = Defines.VERTEX_SIZE;
Int32 max_x = 0;
Int32 max_y = 0;
if (appCtx.FitGraphToView == true)
{
max_x = (Int32)canvas.ActualWidth - Defines.VERTEX_SIZE;
max_y = (Int32)canvas.ActualHeight - Defines.VERTEX_SIZE;
}
else
{
max_x = Defines.VERTEX_SIZE * (appCtx.CurrentGraph.Vertices.Count + Defines.MAX_VERTEX_SPACE);
max_y = Defines.VERTEX_SIZE * (appCtx.CurrentGraph.Vertices.Count + Defines.MAX_VERTEX_SPACE);
}
Vector2 circlePos = new Vector2(appCtx.RandomSource.Next(min_x, max_x), appCtx.RandomSource.Next(min_y, max_y));
DrawableVertex dn = new DrawableVertex
{
Position = circlePos,
VertexId = kvp.Value.VertexId,
Circle = CanvasGeometry.CreateCircle(canvas, circlePos, Defines.VERTEX_SIZE)
};
drawableVertices[dn.VertexId] = dn;
}
foreach (KeyValuePair <Guid, UEdge> kvp in appCtx.CurrentGraph.Edges)
{
CanvasPathBuilder pathBuilder = new CanvasPathBuilder(canvas);
DrawableEdge de = new DrawableEdge
{
EdgeId = kvp.Value.EdgeId,
HeadVertexId = kvp.Value.HeadVertexId,
TailVertexId = kvp.Value.TailVertexId,
};
de.HeadPosition = drawableVertices[de.HeadVertexId].Position;
de.TailPosition = drawableVertices[de.TailVertexId].Position;
pathBuilder.BeginFigure(de.HeadPosition);
pathBuilder.AddLine(de.TailPosition);
pathBuilder.EndFigure(CanvasFigureLoop.Open);
de.Line = CanvasGeometry.CreatePath(pathBuilder);
drawableEdges[de.EdgeId] = de;
}
canvas.Invalidate();
}
