void CreateTargetNode(Microsoft.Msagl.Drawing.Node a)
{
a.Attr.Shape = Shape.DoubleCircle;
a.Attr.FillColor = Color.LightGray;
a.Attr.LabelMargin = -4;
}
private Microsoft.Msagl.Drawing.Node AddNodeToCircle(Point center, Graph graph, double angle)
{
var nodeCenter = center + _circleRadius * (new Point(Math.Cos(angle), Math.Sin(angle)));
Microsoft.Msagl.Drawing.Node node = CreateNodeOnCenter(graph, nodeCenter);
return(node);
}
private ICurve GetNodeBoundaryCurve(Microsoft.Msagl.Drawing.Node node)
{
double width, height;
FrameworkElement frameworkElement;
if (this.drawingObjectsToFrameworkElements.TryGetValue(node, out frameworkElement))
{
Debug.Assert(frameworkElement.CheckAccess());
// a Frameworkelement was prerpared beforehand.
width = frameworkElement.Width + 2 * node.Attr.LabelMargin;
height = frameworkElement.Height + 2 * node.Attr.LabelMargin;
}
else
{
return(GetNodeBoundaryCurveByMeasuringText(node));
}
// the calculated width must not be smaller the minimal size.
if (width < drawingGraph.Attr.MinNodeWidth)
{
width = drawingGraph.Attr.MinNodeWidth;
}
if (height < drawingGraph.Attr.MinNodeHeight)
{
height = drawingGraph.Attr.MinNodeHeight;
}
return(NodeBoundaryCurves.GetNodeBoundaryCurve(node, width, height));
}
private ICurve GetNodeBoundaryCurveByMeasuringText(Microsoft.Msagl.Drawing.Node node)
{
double width, height;
if (String.IsNullOrEmpty(node.LabelText))
{
width = 10;
height = 10;
}
else
{
var size = MeasureText(node.LabelText, new FontFamily(node.Label.FontName), node.Label.FontSize);
width = size.Width;
height = size.Height;
}
width += 2 * node.Attr.LabelMargin;
height += 2 * node.Attr.LabelMargin;
if (width < drawingGraph.Attr.MinNodeWidth)
{
width = drawingGraph.Attr.MinNodeWidth;
}
if (height < drawingGraph.Attr.MinNodeHeight)
{
height = drawingGraph.Attr.MinNodeHeight;
}
return(NodeBoundaryCurves.GetNodeBoundaryCurve(node, width, height));
}
public void NodeToCenter(Microsoft.Msagl.Drawing.Node node)
{
if (node.GeometryNode == null)
{
return;
}
PointToCenter(node.GeometryNode.Center);
}
public IViewerObject AddNode(Microsoft.Msagl.Drawing.Node drawingNode)
{
Graph.AddNode(drawingNode);
var vNode = GetOrCreateViewerNode(drawingNode);
LayoutEditor.AttachLayoutChangeEvent(vNode);
LayoutEditor.CleanObstacles();
return(vNode);
}
static void CreateSourceNode(Microsoft.Msagl.Drawing.Node a)
{
a.Attr.Shape = Shape.Box;
a.Attr.XRadius = 3;
a.Attr.YRadius = 3;
a.Attr.FillColor = Color.Green;
a.Attr.LineWidth = 10;
a.NodeBoundaryDelegate = new DelegateToSetNodeBoundary(StarCurve);
a.Attr.Shape = Shape.DrawFromGeometry;
}
public void NodeToCenterWithScale(Microsoft.Msagl.Drawing.Node node, double scale)
{
if (node.GeometryNode == null)
{
return;
}
var screenPoint = new WpfPoint(GraphCanvas.RenderSize.Width / 2, GraphCanvas.RenderSize.Height / 2);
var sourcePoint = node.BoundingBox.Center;
SetTransform(scale, screenPoint.X - scale * sourcePoint.X, screenPoint.Y + scale * sourcePoint.Y);
}
private Microsoft.Msagl.Drawing.Node CreateNodeOnCenter(Graph graph, Point nodeCenter)
{
var node = new Microsoft.Msagl.Drawing.Node(graph.NodeCount.ToString());
node.Attr.Shape = Microsoft.Msagl.Drawing.Shape.Circle;
node.Attr.Color = new Color(0, 100, 100, 100);
node.Attr.FillColor = new Color(100, 100, 100, 100);
var geomNode = new Node(CurveFactory.CreateCircle(_nodeWidth / 2, nodeCenter));
node.GeometryNode = geomNode;
geomNode.UserData = node;
graph.AddNode(node);
graph.GeometryGraph.Nodes.Add(geomNode);
return(node);
}
private static void AddEdge(Microsoft.Msagl.Drawing.Node a, Microsoft.Msagl.Drawing.Node b, Graph graph)
{
var de = new Microsoft.Msagl.Drawing.Edge(a, b, ConnectionToGraph.Connected);
de.Attr.LineWidth = Math.Max(1, (int)(a.Width / 10));
de.Attr.Color = new Microsoft.Msagl.Drawing.Color(200, 100, 100, 100);
var ge = new Edge(a.GeometryNode, b.GeometryNode);
Point start = a.GeometryNode.Center;
Point end = b.GeometryNode.Center;
Point d = (end - start) / 4;
Point b1 = start + d;
Point b2 = b1 + d;
Point b3 = b2 + d;
ge.EdgeGeometry.Curve = new CubicBezierSegment(start, b1, b2, b3);
ge.EdgeGeometry.TargetArrowhead = new Arrowhead()
{
TipPosition = end
};
de.GeometryEdge = ge;
ge.UserData = de;
}
static ICurve StarCurve(Microsoft.Msagl.Drawing.Node node)
{
return(CurveFactory.CreateStar(60, new Point()));
}
void AddRandomNode(Graph graph)
{
var nodeCenter = RandomCenter();
Microsoft.Msagl.Drawing.Node node = CreateNodeOnCenter(graph, nodeCenter);
}
