y.layout
Class HandleNaNCoordinatesStage

java.lang.Object
  y.layout.AbstractLayoutStage
      y.layout.HandleNaNCoordinatesStage

All Implemented Interfaces:

Layouter, LayoutStage

public class HandleNaNCoordinatesStage
extends AbstractLayoutStage

A LayoutStage that temporarily removes all nodes and edges with NaN-coordinates.

This layout stage may be necessary when a Layouter takes the initial coordinates into account. In this case initial coordinates containing NaN-values, can cause exceptions or strange results.

Layouters that consider initial coordinates:

• IncrementalHierarchicLayouter in incremental mode
• OrthogonalLayouter with activated from sketch drawing
• SmartOrganicLayouter for a subset of nodes
• GenericTreeLayouter, TreeLayouter when using a from-sketch comparator.
• BalloonLayouter in incremental mode
• PartialLayouter
• all edge routing algorithms: EdgeRouter, ChannelEdgeRouter, BusRouter, OrganicEdgeRouter, OrthogonalEdgeRouter

Since this stage only hides the invalid graph elements and doesn't apply any new coordinates, it is not defined where those nodes and edges will be placed within the calculated layout.

Field Summary

Fields inherited from interface y.layout.Layouter

EDGE_ID_DPKEY, NODE_ID_DPKEY, NODE_TYPE_DPKEY, SELECTED_EDGES, SELECTED_NODES

Constructor Summary

HandleNaNCoordinatesStage()

Method Summary

boolean	canLayout(LayoutGraph graph) Accepts all graphs that are accepted by the core layouter.
void	doLayout(LayoutGraph graph) Hides all graph elements with NaN-coordinates during core layout and restores them afterwards.

Methods inherited from class y.layout.AbstractLayoutStage

canLayoutCore, doLayoutCore, getCoreLayouter, setCoreLayouter

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HandleNaNCoordinatesStage

public HandleNaNCoordinatesStage()

Method Detail

canLayout

public boolean canLayout(LayoutGraph graph)

Accepts all graphs that are accepted by the core layouter. If the core layouter is null, every graph gets accepted.

Parameters:

graph - the graph.

Returns:

true if the core layouter accepts the graph, false otherwise.

See Also:

Layouter.doLayout(LayoutGraph)

doLayout

public void doLayout(LayoutGraph graph)

Hides all graph elements with NaN-coordinates during core layout and restores them afterwards.

Parameters:

graph - the graph.

See Also:

Layouter.canLayout(LayoutGraph)