Hierarchical Tree layout

The Hierarchical Tree Layout organizes any tree structure into a Flow Diagram that reveals the tree hierarchy. This layout doesn't support general graphs, only Tree graphs are supported.

This layout takes as input a Tree Graph to compute on internal structure. By Combining this internal structure to a Walker algorithm, the algorithm places the graph nodes in hierarchically arranged layers where each parent node is centered on its sub-tree according to the hierarchical flow direction (if the flow is vertical, centering will be horizontal and vice-versa).*
In this Layout, some features can be used to perform some advanced visualization requests :

• levels distance (layerDistance): controlling levels spacing for advanced compactness control;
• siblings distance (defaultNodeDistance): controlling levels spacing for advanced compactness control;
• flow direction (orientation): controlling flow firection of the Hierarchical Tree Graph (Top to Bottom, Bottom to Top, Right to Left, Left to Right)
• edges drawing (edgeDrawing): customizing edges rendering and shapes(straight, straight polyline, curved polyline, orthogonal polyline and curved polyline);

The Hierarchical layout can be used for all types of tree hierarchies (XML files, database structure, organisation description...). It is also suited for representing UML inheritance.

Projects using this layout : Visualizer and Diagrammer