Hierarchical Bus Structures Demo

This demo shows how bus structures in the hierarchical layout can result in much more compact arrangements.

So-called bus structures are related to edge grouping. A bus structure consists of a root node and bus nodes that are directly connected to the root node. All edges connecting bus nodes of the same structure have the same edge direction.

Demo Presets

The demo offers different configuration presets alongside an option to customize it arbitrarily.

Balanced: Each bus is assigned a default HierarchicalLayoutBusDescriptor with no further configuration.
Leaves: Each bus uses a HierarchicalLayoutBusDescriptor where only one node is allowed before and after the bus by setting maximumNodesAfterBus and maximumNodesBeforeBus to one.
Squares: The HierarchicalLayoutBusDescriptor for each bus is configured separately such that its elements will be arranged in a square.
Left Aligned: Setting the maximumNodesBeforeBus to zero and allowing arbitrarily many nodes after the bus, results in a left alignment.
Right Aligned: Setting the maximumNodesAfterBus to zero and allowing arbitrarily many nodes before the bus, results in a right alignment.
Custom: In this mode, you can play around with the sliders that control the maximumNodesAfterBus and maximumNodesBeforeBus setting to see its effect.

Things to Try

Click Toggle Bus Structures to see the difference between the layout without bus structures and the current bus structure preset.
Try the different bus structure presets in the dropdown menu.
Choose the Custom preset of the dropdown and try different settings for maximumNodesAfterBus and maximumNodesBeforeBus with the sliders.
Edit the graph and click the button to re-run the layout with the current settings.