Provides hierarchical layout style algorithms which aim to highlight the main direction or flow within a directed graph.
com.yworks.yfiles.layout.hierarchic.IncrementalHierarchicLayouter, the main implementation for the hierarchical layout style, supports both complete re-layout of a given diagram as well as incremental layout where only a subset of a diagram should be rearranged.
Also, IncrementalHierarchicLayouter (IHL) supports layout of "flat" as well as grouped graphs, i.e., graphs where nodes are contained within other, so-called group nodes.
Note that com.yworks.yfiles.layout.hierarchic.HierarchicLayouter and com.yworks.yfiles.layout.hierarchic.HierarchicGroupLayouter are legacy layout algorithms for the hierarchical layout style. They are superseded by IHL, which adds additional features like sophisticated swimlane layout support or incremental layout support.
See the description in the yFiles FLEX Developer's Guide (Analysis and Layout Part) section on the hierarchical layout style.
| Interface | Description | |
|---|---|---|
| ConstraintLayerer_ConstraintFactory | Interface specification for classes that can create suitable constraints for a com.yworks.yfiles.layout.hierarchic.ConstraintLayerer instance. | |
| Drawer | Interface for the third phase of the Sugiyama algorithm. | |
| LayerSequencer | Classes implementing this interface calculate the order of nodes within the different layers that the graph has been partitioned into. | |
| MementoSupport | This interface is a Cookie for the HierarchicLayouter's memento support. | |
| OldLayerer | This is the interface to the node layering phase of the hierarchic layouter. |
| Class | Description | |
|---|---|---|
| AbstractDrawer | Abstract base class for the third phase of the Sugiyama algorithm. | |
| AlignmentDrawer | This class can be used to simply wrap another Drawer implementation. | |
| AlignmentDrawer_BottomAlignmentDataProvider | Simple utility class that can be registered with the graph to be laid out. | |
| AlignmentDrawer_LeftAlignmentDataProvider | Simple utility class that can be registered with the graph to be laid out. | |
| AlignmentDrawer_RightAlignmentDataProvider | Simple utility class that can be registered with the graph to be laid out. | |
| AlignmentDrawer_TopAlignmentDataProvider | Simple utility class that can be registered with the graph to be laid out. | |
| AsIsLayerer | This layerer implementation assigns layers by analyzing already existing node coordinates. | |
| BFSLayerer | Layerer that uses a breadth first search to assign layers to the nodes. | |
| ClassicLayerSequencer | This class implements the second phase of the Sugiyama algorithm. | |
| ConstraintFactoryCompanion | ||
| ConstraintLayerer | Layerer implementation that uses relative and absolute layering constraints. | |
| DrawerKeys | ||
| EdgeReverser | Helper that reverses edges that are oriented in the wrong direction. | |
| GivenLayersLayerer | This layerer implementation layers the nodes by given layer IDs. | |
| HierarchicGroupLayouter | This class is an extended variant of the HierarchicLayouter class. | |
| HierarchicLayouter | This class implements a layout algorithm for drawing directed graphs in a hierarchic way. | |
| IncrementalHierarchicLayouter | This class is a variant of the classic com.yworks.yfiles.layout.hierarchic.HierarchicLayouter implementation. | |
| LinearSegmentsDrawer | This class implements the third phase of the Sugiyama layout algorithm. | |
| MedianDrawerWrapper | This class can be used to improve the results of different drawers. | |
| MedianLinearSegmentDrawer | This class implements the third phase of the hierarchic layout algorithm. | |
| MementoSupportCompanion | ||
| NodeLabelSpaceDrawer | This class can be used to wrap com.yworks.yfiles.layout.hierarchic.Drawer implementations. | |
| PendularDrawer | This class implements the third phase of the Sugiyama layout algorithm as described in "Visualisierungstechniken für den Compilerbau" (Georg Sander) mixed with techniques as described in "A technique for drawing directed graphs" (Gansner et al). | |
| PolylineDrawer | This class is an implementation of the third phase of the Sugiyama algorithm, which represents edges by polylines. | |
| PortAssignment | This class assigns port coordinates to the edges of a graph. | |
| SimplexDrawer | Drawer based on rank-assignment. | |
| TopologicalLayerer | This class implements the first phase of the Sugiyama algorithm. | |
| TreeDrawer | This class implements the third phase of the hierarchic layout algorithm for trees. | |
| TreeDrawer_HierarchicTreePlacer | places nodes in their given layers (does not change the y coordinates) for the TREE layout style of a HierarchicLayouter. | |
| WeightedLayerer | This class implements the first phase of the hierarchic layouter. |