private void SetupLayouts()
{
// create TreeLayout
var treeLayout = new TreeLayout {
LayoutOrientation = LayoutOrientation.LeftToRight
};
treeLayout.PrependStage(new FixNodeLayoutStage());
layouts.Add(treeLayout);
layoutMapper["Tree"] = treeLayout;
layoutComboBox.Items.Add("Tree");
// create BalloonLayout
var balloonLayout = new BalloonLayout
{
FromSketchMode = true,
CompactnessFactor = 1.0,
AllowOverlaps = true
};
balloonLayout.PrependStage(new FixNodeLayoutStage());
layouts.Add(balloonLayout);
layoutMapper["Balloon"] = balloonLayout;
layoutComboBox.Items.Add("Balloon");
// create OrganicLayout
var organicLayout = new OrganicLayout {
MinimumNodeDistance = 40,
Deterministic = true
};
organicLayout.PrependStage(new FixNodeLayoutStage());
layouts.Add(organicLayout);
layoutMapper["Organic"] = organicLayout;
layoutComboBox.Items.Add("Organic");
// create OrthogonalLayout
var orthogonalLayout = new OrthogonalLayout();
orthogonalLayout.PrependStage(new FixNodeLayoutStage());
layouts.Add(orthogonalLayout);
layoutMapper["Orthogonal"] = orthogonalLayout;
layoutComboBox.Items.Add("Orthogonal");
// set it as initial value
currentLayout = treeLayout;
layoutComboBox.SelectedIndex = 0;
}
/// <summary>
/// Runs a balloon layout where the hierarchy edges are the tree edges and original edges are bundled.
/// </summary>
private async Task RunBalloonLayout(IListEnumerable <INode> affectedNodes = null)
{
// create the balloon layout
var layout = new BalloonLayout {
IntegratedNodeLabeling = true,
NodeLabelingPolicy = NodeLabelingPolicy.RayLikeLeaves,
FromSketchMode = true,
CompactnessFactor = 0.1,
AllowOverlaps = true
};
// prepend a TreeReduction stage with the hierarchy edges as tree edges
layout.PrependStage(new TreeReductionStage());
var nonTreeEdges = GraphControl.Graph.Edges.Where(e => !aggregationHelper.IsHierarchyEdge(e)).ToList();
// mark all other edges to be bundled
var bundleDescriptorMap = new ItemMapping <IEdge, EdgeBundleDescriptor>();
foreach (var nonTreeEdge in nonTreeEdges)
{
bundleDescriptorMap.Mapper[nonTreeEdge] = new EdgeBundleDescriptor {
Bundled = true
};
}
var treeReductionStageData = new TreeReductionStageData {
NonTreeEdges = { Items = nonTreeEdges }, EdgeBundleDescriptors = bundleDescriptorMap
};
// create a layout executor that also zooms to all nodes that were affected by the last operation
var layoutExecutor =
new ZoomToNodesLayoutExecutor(affectedNodes ?? ListEnumerable <INode> .Empty, GraphControl, layout)
{
Duration = TimeSpan.FromSeconds(0.5),
AnimateViewport = true,
EasedAnimation = true,
LayoutData = treeReductionStageData
};
await layoutExecutor.Start();
}