private void SetGraph()
{
var graph = new Graph();
graph.AddEdge("a", "b");
graph.AddEdge("e", "b");
graph.AddEdge("d", "b");
graph.AddEdge("b", "c");
graph.AddEdge("a22", "b22");
graph.AddEdge("e22", "b22");
graph.AddEdge("d22", "b22");
graph.AddEdge("b22", "c22");
graph.AddEdge("a0", "b0");
graph.AddEdge("b0", "c0");
graph.AddEdge("a33", "b33");
graph.AddEdge("e33", "b33");
graph.AddEdge("d33", "b33");
graph.AddEdge("b33", "c33");
graph.AddEdge("a11", "b11");
graph.AddEdge("b11", "c11").LabelText = "Test labels!";
graph.CreateGeometryGraph();
foreach (Node node in graph.Nodes)
node.GeometryNode.BoundaryCurve = CreateLabelAndBoundary(node);
foreach (var edge in graph.Edges) {
if (edge.Label != null) {
var geomEdge = edge.GeometryEdge;
double width;
double height;
StringMeasure.MeasureWithFont(edge.LabelText,
new Font(edge.Label.FontName, (float)edge.Label.FontSize), out width, out height);
edge.Label.GeometryLabel=geomEdge.Label = new Label(width, height, geomEdge);
}
}
var geomGraph=graph.GeometryGraph;
var geomGraphComponents = GraphConnectedComponents.CreateComponents(geomGraph.Nodes, geomGraph.Edges);
var settings = new SugiyamaLayoutSettings();
foreach (var subgraph in geomGraphComponents) {
var layout=new LayeredLayout(subgraph, settings);
subgraph.Margins = settings.NodeSeparation/2;
layout.Run();
}
Microsoft.Msagl.Layout.MDS.MdsGraphLayout.PackGraphs(geomGraphComponents, settings);
geomGraph.UpdateBoundingBox();
gViewer1.NeedToCalculateLayout = false;
gViewer1.Graph = graph;
}
public void MinimumSizeIsRespected()
{
// Setup
string filePath = Path.Combine(this.TestContext.TestDir, "Out\\Dots", "chat.dot");
GeometryGraph graph = this.LoadGraph(filePath);
const double DesiredHeight = 100000;
const double DesiredWidth = 100000;
SugiyamaLayoutSettings settings = new SugiyamaLayoutSettings();
settings.MinimalHeight = DesiredHeight;
settings.MinimalWidth = DesiredWidth;
// Execute
LayeredLayout layeredLayout = new LayeredLayout(graph, settings);
layeredLayout.Run();
// Verify the graph is the correct size
Assert.IsTrue(DesiredHeight < graph.Height, "Graph height should be the minimal height.");
Assert.IsTrue(DesiredWidth < graph.Width, "Graph width should be the minimal width.");
// Verify the nodes were spread apart to fill the space
Rectangle nodeBounds = new Rectangle(graph.Nodes.Select(n => n.BoundingBox));
Assert.IsTrue(DesiredWidth < nodeBounds.Height, "The graph nodes weren't scaled vertically to fill the space.");
Assert.IsTrue(DesiredWidth < nodeBounds.Width, "The graph nodes weren't scaled horizontally to fill the space.");
}
public void NodeShapeChange()
{
// Setup
string filePath = Path.Combine(this.TestContext.TestDir, "Out\\Dots", "chat.dot");
GeometryGraph graph = this.LoadGraph(filePath);
var settings = new SugiyamaLayoutSettings();
// Initial layout
LayeredLayout layeredLayout = new LayeredLayout(graph, settings);
layeredLayout.Run();
SortedList<double, SortedList<double, Node>> originalLayers = SugiyamaValidation.GetLayers(graph, true);
// Incremental layout
List<Node> nodes = graph.Nodes.ToList();
for (int i = 0; i < nodes.Count; i++)
{
// Resize a node
Node node = nodes[i];
node.BoundaryCurve = node.BoundaryCurve.ScaleFromOrigin(2.0, 2.0);
// Run incremental layout
LayeredLayout.IncrementalLayout(graph, node);
// Verify - the layering and ordering of nodes should not have changed.
SortedList<double, SortedList<double, Node>> newLayers = SugiyamaValidation.GetLayers(graph, true);
VerifyLayersAreEqual(originalLayers, newLayers);
}
}
public void TallRatioSimpleStretch()
{
// Setup
string filePath = Path.Combine(this.TestContext.TestDir, "Out\\Dots", "chat.dot");
GeometryGraph graph = this.LoadGraph(filePath);
SugiyamaLayoutSettings settings = new SugiyamaLayoutSettings();
settings.AspectRatio = 0.25;
// Execute
LayeredLayout layeredLayout = new LayeredLayout(graph, settings);
layeredLayout.Run();
// Verify
VerifyAspectRatio(graph, settings.AspectRatio);
}
internal static GeometryGraph CreateAndLayoutGraph()
{
GeometryGraph graph = new GeometryGraph();
double width = 40;
double height = 10;
foreach (string id in "0 1 2 3 4 5 6 A B C D E F G a b c d e".Split(' '))
{
DrawingUtilsForSamples.AddNode(id, graph, width, height);
}
graph.Edges.Add(new Edge(graph.FindNodeByUserData("A"), graph.FindNodeByUserData("B")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("A"), graph.FindNodeByUserData("C")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("A"), graph.FindNodeByUserData("D")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("D"), graph.FindNodeByUserData("E")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("B"), graph.FindNodeByUserData("E")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("D"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("0"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("1"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("2"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("3"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("4"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("5"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("6"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("a"), graph.FindNodeByUserData("b")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("b"), graph.FindNodeByUserData("c")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("c"), graph.FindNodeByUserData("d")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("d"), graph.FindNodeByUserData("e")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("A"), graph.FindNodeByUserData("a")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("B"), graph.FindNodeByUserData("a")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("C"), graph.FindNodeByUserData("a")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("D"), graph.FindNodeByUserData("a")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("E"), graph.FindNodeByUserData("a")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("F"), graph.FindNodeByUserData("a")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("G"), graph.FindNodeByUserData("a")));
var settings = new SugiyamaLayoutSettings {
Transformation = PlaneTransformation.Rotation(Math.PI/2),
EdgeRoutingSettings = {EdgeRoutingMode = EdgeRoutingMode.Spline}
};
var layout = new LayeredLayout(graph, settings);
layout.Run();
return graph;
}
public void LabelsNearEdges()
{
// Setup
string filePath = Path.Combine(this.TestContext.TestDir, "Out\\Dots", "chat.dot");
GeometryGraph graph = this.LoadGraph(filePath);
AddLabelSizes(graph);
Assert.IsTrue(graph.CollectAllLabels().Count > 0, "The loaded graph has no labels.");
// Execute
LayeredLayout layeredLayout = new LayeredLayout(graph, new SugiyamaLayoutSettings());
layeredLayout.Run();
// Verify
foreach (Edge edge in graph.Edges)
{
VerifyLabelIsNearEdges(edge);
// We do not verify that labels don't overlap other edges,
// since that is not gauranteed by sugiyama layout.
}
}
internal static GeometryGraph CreateAndLayoutGraph()
{
double w = 40;
double h = 10;
GeometryGraph graph = new GeometryGraph();
// columns
var col0 = new[] { "a", "b", "c" };
var col1 = new[] { "d", "e", "f", "g" };
var col2 = new[] { "k", "l", "m", "n" };
var col3 = new[] { "w", "y", "z" };
var settings = new SugiyamaLayoutSettings();
foreach (var id in col0)
DrawingUtilsForSamples.AddNode(id, graph, w, h);
foreach (var id in col1)
DrawingUtilsForSamples.AddNode(id, graph, w, h);
foreach (var id in col2)
DrawingUtilsForSamples.AddNode(id, graph, w, h);
foreach (var id in col3)
DrawingUtilsForSamples.AddNode(id, graph, w, h);
//pinning columns
settings.PinNodesToSameLayer(col0.Select(s => graph.FindNodeByUserData(s)).ToArray());
settings.PinNodesToSameLayer(col1.Select(s => graph.FindNodeByUserData(s)).ToArray());
settings.PinNodesToSameLayer(col2.Select(s => graph.FindNodeByUserData(s)).ToArray());
settings.PinNodesToSameLayer(col3.Select(s => graph.FindNodeByUserData(s)).ToArray());
AddEdgesBetweenColumns(col0, col1, graph);
AddEdgesBetweenColumns(col1, col2, graph);
AddEdgesBetweenColumns(col2, col3, graph);
// rotate layer to columns
settings.Transformation = PlaneTransformation.Rotation(Math.PI/2);
settings.NodeSeparation = 5;
settings.LayerSeparation = 100;
var ll = new LayeredLayout(graph, settings);
ll.Run();
return graph;
}
static void TestGraphWithConstraints() {
var graph = new GeometryGraph();
var closed = new Node(CreateEllipse(), "closed");
var line = new Node(CreateEllipse(), "line");
var bezier = new Node(CreateEllipse(), "bezier");
var arc = new Node(CreateEllipse(), "arc");
var rectangle = new Node(CreateEllipse(), "rectangle");
var ellipse = new Node(CreateEllipse(), "ellipse");
var polygon = new Node(CreateEllipse(), "polygon");
var shapes = new Node(CreateEllipse(), "shapes");
var open = new Node(CreateEllipse(), "open");
graph.Nodes.Add(closed);
graph.Nodes.Add(line);
graph.Nodes.Add(bezier);
graph.Nodes.Add(arc);
graph.Nodes.Add(rectangle);
graph.Nodes.Add(ellipse);
graph.Nodes.Add(polygon);
graph.Nodes.Add(shapes);
graph.Nodes.Add(open);
var so = new Edge(shapes, open);
var sc = new Edge(shapes, closed);
var ol = new Edge(open, line);
var ob = new Edge(open, bezier);
var oa = new Edge(open, arc);
var cr = new Edge(closed, rectangle);
var ce = new Edge(closed, ellipse);
var cp = new Edge(closed, polygon);
graph.Edges.Add(so);
graph.Edges.Add(sc);
graph.Edges.Add(ol);
graph.Edges.Add(ob);
graph.Edges.Add(oa);
graph.Edges.Add(cr);
graph.Edges.Add(ce);
graph.Edges.Add(cp);
var settings = new SugiyamaLayoutSettings();
settings.AddUpDownVerticalConstraint(closed, ellipse);
settings.AddUpDownVerticalConstraint(open, bezier);
settings.AddUpDownConstraint(closed, open);
settings.AddSameLayerNeighbors(polygon, open);
settings.AddLeftRightConstraint(closed, open);
settings.AddLeftRightConstraint(open, closed);
////To verify 444585, just turn on this following commented line
settings.AddLeftRightConstraint(ellipse, rectangle);
settings.AddLeftRightConstraint(ellipse, bezier);
var layeredLayout = new LayeredLayout(graph, settings);
layeredLayout.Run();
#if DEBUG
DisplayGeometryGraph.ShowGraph(graph);
#endif
}
public static void TreeWithConstraints() {
var graph = new GeometryGraph();
var closed = new Node(CreateEllipse(), "clos");
var line = new Node(CreateEllipse(), "line");
var bezier = new Node(CreateEllipse(), "bezi");
var arc = new Node(CreateEllipse(), "arc");
var rectangle = new Node(CreateEllipse(), "rect");
var ellipse = new Node(CreateEllipse(), "elli");
var polygon = new Node(CreateEllipse(), "poly");
var shapes = new Node(CreateEllipse(), "shap");
var open = new Node(CreateEllipse(), "open");
graph.Nodes.Add(closed);
graph.Nodes.Add(line);
graph.Nodes.Add(bezier);
graph.Nodes.Add(arc);
graph.Nodes.Add(rectangle);
graph.Nodes.Add(ellipse);
graph.Nodes.Add(polygon);
graph.Nodes.Add(shapes);
graph.Nodes.Add(open);
var so = new Edge(shapes, open);
var sc = new Edge(shapes, closed);
var ol = new Edge(open, line);
var ob = new Edge(open, bezier);
var oa = new Edge(open, arc);
var cr = new Edge(closed, rectangle);
var ce = new Edge(closed, ellipse);
var cp = new Edge(closed, polygon);
graph.Edges.Add(so);
graph.Edges.Add(sc);
graph.Edges.Add(ol);
graph.Edges.Add(ob);
graph.Edges.Add(oa);
graph.Edges.Add(cr);
graph.Edges.Add(ce);
graph.Edges.Add(cp);
var settings = new SugiyamaLayoutSettings();
settings.AddUpDownVerticalConstraint(closed, ellipse);
settings.AddUpDownVerticalConstraint(open, bezier);
settings.AddUpDownConstraint(closed, open);
settings.AddSameLayerNeighbors(polygon, open);
settings.AddLeftRightConstraint(closed, open);
settings.AddUpDownConstraint(closed, open);
//settings.AddSameLayerNeighbors(polygon, open);
settings.AddLeftRightConstraint(closed, open);
//To verify 444585, just turn on this following commented line
settings.AddLeftRightConstraint(ellipse, rectangle);
settings.AddLeftRightConstraint(ellipse, bezier);
var layeredLayout = new LayeredLayout(graph, settings);
layeredLayout.Run();
#if DEBUG
LayoutAlgorithmSettings.ShowGraph(graph);
#endif
Debug.Assert(Math.Abs(closed.Center.X - ellipse.Center.X) < 0.01);
Debug.Assert(Math.Abs(open.Center.X - bezier.Center.X) < 0.01);
foreach (Node n0 in graph.Nodes) {
foreach (Node n1 in graph.Nodes) {
if (n0 == n1) {
continue;
}
Debug.Assert(!n0.BoundingBox.Intersects(n1.BoundingBox));
}
}
ValidateUpDownVerticalConstraint(closed, ellipse);
ValidateUpDownVerticalConstraint(open, bezier);
ValidateUpDownConstraint(closed, open);
ValidateNeighborConstraint(graph, polygon, open);
ValidateLeftRightConstraint(closed, open);
//To verify 444585, also turn on this following commented line
ValidateLeftRightConstraint(ellipse, rectangle);
ValidateLeftRightConstraint(ellipse, bezier);
}
static void LayerSeparationWithTransform() {
GeometryGraph graph = GeometryGraphReader.CreateFromFile("c:/tmp/wrongLayout.msagl.geom");
var settings = new SugiyamaLayoutSettings();
settings.Transformation = PlaneTransformation.Rotation(-Math.PI/2);
var layeredLayout = new LayeredLayout(graph, settings);
layeredLayout.Run();
// LayoutHelpers.CalculateLayout(graph, settings);
GeometryGraphWriter.Write(graph, "c:\\tmp\\correctLayout");
#if DEBUG
LayoutAlgorithmSettings.ShowGraph(graph);
#endif
}
static void TestConstraints() {
var gg = new GeometryGraph();
var node1 = new Node {GeometryParent = gg};
node1.BoundaryCurve =CurveFactory.CreateEllipse(20.0,10.0,new Point(0.0, 0.0));
gg.Nodes.Add(node1);
var node2 = new Node {GeometryParent = gg};
node2.BoundaryCurve =
CurveFactory.CreateEllipse(20.0,10.0,new Point(0.0, 0.0));
gg.Nodes.Add(node2);
var edge = new Edge(node1,node2) {GeometryParent = gg};
gg.Edges.Add(edge);
edge.Label = new Label {GeometryParent = edge,
//need to set the label dimensions, otherwise the assertion is thrown
Width = 10, Height = 10
};
//node1.AddOutEdge(edge); //the edges have been already added to the nodes in gg.Edges.Add(edge)
//node2.AddInEdge(edge);
var settings = new SugiyamaLayoutSettings();
settings.AddSameLayerNeighbors(node1, node2);
var layoutAlgorithm = new
LayeredLayout(gg, settings);
layoutAlgorithm.Run();
#if TEST_MSAGL
LayoutAlgorithmSettings.ShowGraph(gg);
#endif
Environment.Exit(0);
}
public void ConstraintWithTransformation()
{
Random random = new Random(999);
GeometryGraph graph = GraphGenerator.GenerateOneSimpleGraph();
GraphGenerator.SetRandomNodeShapes(graph, random);
SugiyamaLayoutSettings settings = new SugiyamaLayoutSettings();
//layer direction to be left to right
settings.Transformation = PlaneTransformation.Rotation(Math.PI / 2);
List<Node> nodes = graph.Nodes.ToList();
settings.AddUpDownConstraint(nodes[0], nodes[1]);
settings.AddLeftRightConstraint(nodes[3], nodes[4]);
settings.AddUpDownVerticalConstraint(nodes[0], nodes[3]);
settings.AddSameLayerNeighbors(nodes[2], nodes[4]);
LayeredLayout layeredLayout = new LayeredLayout(graph, settings);
layeredLayout.Run();
ShowGraphInDebugViewer(graph);
SugiyamaValidation.ValidateUpDownConstraint(nodes[0], nodes[1]);
SugiyamaValidation.ValidateLeftRightConstraint(nodes[3], nodes[4]);
SugiyamaValidation.ValidateUpDownVerticalConstraint(nodes[0], nodes[3]);
SugiyamaValidation.ValidateNeighborConstraint(graph, nodes[2], nodes[4], settings);
}
private static void LayoutAndValidate(GeometryGraph graph, SugiyamaLayoutSettings settings, double nodeSeparation, double layerSeparation, LayerDirection direction)
{
settings.NodeSeparation = nodeSeparation;
switch (direction)
{
case LayerDirection.None:
case LayerDirection.TopToBottom:
break;
case LayerDirection.BottomToTop:
settings.Transformation = PlaneTransformation.Rotation(Math.PI);
break;
case LayerDirection.LeftToRight:
settings.Transformation = PlaneTransformation.Rotation(Math.PI / 2);
break;
case LayerDirection.RightToLeft:
settings.Transformation = PlaneTransformation.Rotation(-Math.PI / 2);
break;
}
settings.LayerSeparation = layerSeparation;
LayeredLayout layeredLayout = new LayeredLayout(graph, settings);
layeredLayout.Run();
ShowGraphInDebugViewer(graph);
// SugiyamaValidation.ValidateGraph(graph, settings);
}
static internal GeometryGraph CreateAndLayoutGraph() {
GeometryGraph graph = new GeometryGraph();
double width = 40;
double height = 10;
foreach (string id in "0 1 2 3 4 5 6 A B C D E F G a b c d e".Split(' '))
{
AddNode(id, graph, width, height);
}
graph.Edges.Add(new Edge(graph.FindNodeByUserData("A"), graph.FindNodeByUserData("B")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("A"), graph.FindNodeByUserData("C")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("A"), graph.FindNodeByUserData("D")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("D"), graph.FindNodeByUserData("E")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("B"), graph.FindNodeByUserData("E")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("D"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("0"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("1"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("2"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("3"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("4"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("5"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("6"), graph.FindNodeByUserData("F")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("a"), graph.FindNodeByUserData("b")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("b"), graph.FindNodeByUserData("c")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("c"), graph.FindNodeByUserData("d")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("d"), graph.FindNodeByUserData("e")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("A"), graph.FindNodeByUserData("a")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("B"), graph.FindNodeByUserData("a")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("C"), graph.FindNodeByUserData("a")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("D"), graph.FindNodeByUserData("a")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("E"), graph.FindNodeByUserData("a")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("F"), graph.FindNodeByUserData("a")));
graph.Edges.Add(new Edge(graph.FindNodeByUserData("G"), graph.FindNodeByUserData("a")));
var settings = new SugiyamaLayoutSettings();
settings.Transformation = PlaneTransformation.Rotation(Math.PI/2);
settings.EdgeRoutingSettings.EdgeRoutingMode = EdgeRoutingMode.Spline;
var layout = new LayeredLayout(graph, settings);
layout.Run();
return graph;
// double w = 40;
// double h = 10;
// GeometryGraph graph = new GeometryGraph();
//columns
// var col0 = new[] { "a", "b", "c" };
// var col1 = new[] { "d", "e", "f", "g" };
// var col2 = new[] { "k", "l", "m", "n" };
// var col3 = new[] { "w", "y", "z" };
//
// var settings = new SugiyamaLayoutSettings();
//
// foreach (var id in col0)
// AddNode(id, graph, w, h);
// foreach (var id in col1)
// AddNode(id, graph, w, h);
// foreach (var id in col2)
// AddNode(id, graph, w, h);
// foreach (var id in col3)
// AddNode(id, graph, w, h);
//
//pinning columns
// settings.PinNodesToSameLayer(col0.Select(s=>graph.FindNodeByUserData(s)).ToArray());
// settings.PinNodesToSameLayer(col1.Select(s => graph.FindNodeByUserData(s)).ToArray());
// settings.PinNodesToSameLayer(col2.Select(s => graph.FindNodeByUserData(s)).ToArray());
// settings.PinNodesToSameLayer(col3.Select(s => graph.FindNodeByUserData(s)).ToArray());
//
// AddEdgesBetweenColumns(col0, col1, graph);
// AddEdgesBetweenColumns(col1, col2, graph);
// AddEdgesBetweenColumns(col2, col3, graph);
//rotate layer to columns
// graph.Transformation = PlaneTransformation.Rotation(Math.PI / 2);
// settings.NodeSeparation = 5;
// settings.LayerSeparation = 100;
// var ll = new LayeredLayout(graph, settings);
// ll.Run();
// return graph;
}
private void DoLayoutSugiyama(DrawingGraph dg)
{
var gg = dg.GeometryGraph;
var layoutAlgorithm = new LayeredLayout(gg, dg.LayoutAlgorithmSettings as SugiyamaLayoutSettings);
layoutAlgorithm.Run(CancelToken = new Core.CancelToken());
var settings = (dg.LayoutAlgorithmSettings as SugiyamaLayoutSettings);
if (!CancelToken.Canceled)
DoEdgeRouting(dg.GeometryGraph, settings.EdgeRoutingSettings, settings.NodeSeparation);
}
static void BundleWithWidths() {
bool msaglFile;
int line;
int column;
var graph = Form2.CreateDrawingGraphFromFile("c:\\dev\\graphlayout\\graphs\\tail.dot", out line, out column, out msaglFile);
var graph1 = Form2.CreateDrawingGraphFromFile("c:\\dev\\graphlayout\\graphs\\tail.dot", out line, out column, out msaglFile);
double w = 0.3;
foreach (var edge in graph.Edges) {
edge.Attr.LineWidth = w;
if (w == 0.3)
w = 0.4;
else if (w == 0.4)
w = .5;
else w = 0.3;
}
var gv = new GViewer();
gv.Graph = graph1;
graph.CreateGeometryGraph();
var gg = graph.GeometryGraph;
var gg1 = graph1.GeometryGraph;
for (int i = 0; i < gg.Nodes.Count; i++)
gg.Nodes[i].BoundaryCurve = gg1.Nodes[i].BoundaryCurve;
var ss = new SugiyamaLayoutSettings();
var ll = new LayeredLayout(graph.GeometryGraph, ss);
ll.Run();
var bundler = new SplineRouter(graph.GeometryGraph, ss.NodeSeparation * 2, ss.NodeSeparation / 3, Math.PI / 6, ss.EdgeRoutingSettings.BundlingSettings);
bundler.Run();
var f = new Form();
f.SuspendLayout();
f.Controls.Add(gv);
gv.Dock = DockStyle.Fill;
gv.NeedToCalculateLayout = false;
gv.Graph = graph;
f.ResumeLayout();
f.ShowDialog();
}
void LayeredLayout(SugiyamaLayoutSettings layeredSettings, GeometryGraph component) {
var layeredLayout = new LayeredLayout(component, layeredSettings);
layeredLayout.SetCancelToken(this.CancelToken);
double aspectRatio = layeredLayout.EstimateAspectRatio();
double edgeDensity = (double) component.Edges.Count/component.Nodes.Count;
// if the estimated aspect ratio is not in the range below then we fall back to force directed layout
// with constraints which is both faster and usually returns a better aspect ratio for largish graphs
var fallbackLayoutSettings = layeredSettings.FallbackLayoutSettings;
if (fallbackLayoutSettings != null &&
(component.Nodes.Count > 50 && edgeDensity > 2 // too dense
|| component.Nodes.Count > 40 && edgeDensity > 3.0 // too dense
|| component.Nodes.Count > 30 && edgeDensity > 4.0 // too dense
|| component.Nodes.Count > 30 && aspectRatio > layeredSettings.MaxAspectRatioEccentricity // too wide
|| component.Nodes.Count > 30 && aspectRatio < 1d/layeredSettings.MaxAspectRatioEccentricity
// too high
)) {
// for large graphs there's really no point trying to produce nice edge routes
// the sugiyama edge routing can be quite circuitous on large graphs anyway
var prevEdgeRouting = fallbackLayoutSettings.EdgeRoutingSettings.EdgeRoutingMode;
if (component.Nodes.Count > 100 && edgeDensity > 2.0)
fallbackLayoutSettings.EdgeRoutingSettings.EdgeRoutingMode = EdgeRoutingMode.StraightLine;
LayoutComponent(fallbackLayoutSettings, component);
fallbackLayoutSettings.EdgeRoutingSettings.EdgeRoutingMode = prevEdgeRouting;
}
else {
var prevEdgeRouting = layeredSettings.EdgeRoutingSettings.EdgeRoutingMode;
// for large graphs there's really no point trying to produce nice edge routes
// the sugiyama edge routing can be quite circuitous on large graphs anyway
if (component.Nodes.Count > 100 && edgeDensity > 2.0) {
layeredSettings.EdgeRoutingSettings.EdgeRoutingMode = EdgeRoutingMode.StraightLine;
}
layeredLayout.Run(this.CancelToken);
layeredSettings.EdgeRoutingSettings.EdgeRoutingMode = prevEdgeRouting;
InitialLayoutHelpers.FixBoundingBox(component, layeredSettings);
}
//LayoutAlgorithmSettings.ShowGraph(component);
}
public void StaircaseLayoutWithConstraints()
{
var graph = new GeometryGraph();
var a = new Node(CreateRectangle());
var b = new Node(CreateRectangle());
var c = new Node(CreateRectangle());
var d = new Node(CreateRectangle());
// need the following dummy nodes for constraints
var v1 = new Node(CreateDot());
var v2 = new Node(CreateDot());
var v3 = new Node(CreateDot());
graph.Nodes.Add(a);
graph.Nodes.Add(b);
graph.Nodes.Add(c);
graph.Nodes.Add(d);
graph.Nodes.Add(v1);
graph.Nodes.Add(v2);
graph.Nodes.Add(v3);
graph.Edges.Add(new Edge(a, b));
graph.Edges.Add(new Edge(a, b));
graph.Edges.Add(new Edge(b, a));
graph.Edges.Add(new Edge(b, c));
graph.Edges.Add(new Edge(c, d));
graph.Edges.Add(new Edge(d, c));
graph.Edges.Add(new Edge(c, d));
graph.Edges.Add(new Edge(d, c));
// if dummy nodes are not connected to graph then we get a DebugAssert fail
graph.Edges.Add(new Edge(a, v1));
graph.Edges.Add(new Edge(b, v2));
graph.Edges.Add(new Edge(c, v3));
var settings = new SugiyamaLayoutSettings();
// it's fairly easy to find debug assert failures by trying different combinations of the following
settings.AddUpDownVerticalConstraint(a, v1);
settings.AddUpDownVerticalConstraint(b, v2);
settings.AddUpDownVerticalConstraint(c, v3);
//settings.AddUpDownVerticalConstraint(v2, d);
//settings.AddUpDownConstraint(a, v1);
//settings.AddUpDownConstraint(a, b);
//settings.AddUpDownConstraint(b, c);
//settings.AddUpDownConstraint(c, d);
settings.AddSameLayerNeighbors(v1, b);
settings.AddSameLayerNeighbors(v2, c);
settings.AddSameLayerNeighbors(d, v3);
//settings.AddLeftRightConstraint(v1, b);
//settings.AddLeftRightConstraint(v2, c); - doesn't work
LayeredLayout layeredLayout = new LayeredLayout(graph, settings);
layeredLayout.Run();
graph.Nodes.Remove(v1);
graph.Nodes.Remove(v2);
graph.Nodes.Remove(v3);
ShowGraphInDebugViewer(graph);
}