void InitIncrementalDragger() {
incrementalDragger = new IncrementalDragger(objectsToDrag.OfType<GeomNode>().ToArray(), graph,
layoutSettings);
}
internal void ForgetDragging() {
incrementalDragger = null;
}
void MakeRoomForNewNode(Drawing.Node drawingNode) {
IncrementalDragger incrementalDragger = new IncrementalDragger(new[] {drawingNode.GeometryNode},
Graph.GeometryGraph,
Graph.LayoutAlgorithmSettings);
incrementalDragger.Drag(new Point());
foreach (var n in incrementalDragger.ChangedGraph.Nodes) {
var dn = (Drawing.Node) n.UserData;
var vn = drawingObjectsToIViewerObjects[dn] as VNode;
if (vn != null)
vn.Invalidate();
}
foreach (var n in incrementalDragger.ChangedGraph.Edges) {
var dn = (Drawing.Edge) n.UserData;
var ve = drawingObjectsToIViewerObjects[dn] as VEdge;
if (ve != null)
ve.Invalidate();
}
}