y.layout.hierarchic
Class AsIsLayerer

java.lang.Object
  |
  +--y.layout.hierarchic.AsIsLayerer

All Implemented Interfaces:

Layerer, LayoutOrientation

public class AsIsLayerer

extends Object

implements Layerer, LayoutOrientation

This layerer implementation assigns layers by analysing already existing node coordinates. Nodes whose bounding boxes intesect a common y-coordinate are assigned to the same layer.

Field Summary

Fields inherited from interface y.layout.LayoutOrientation

BOTTOM_TO_TOP, LEFT_TO_RIGHT, RIGHT_TO_LEFT, TOP_TO_BOTTOM

Constructor Summary

AsIsLayerer()

Method Summary

int	assignNodeLayer(LayoutGraph g, NodeMap layerMap, EdgeList reversedEdges) This method assigns the nodes in the graph to layers.
byte	getOrientation() Returns the orientation assumed by this layerer.
void	setOrientation(byte orientation) Sets the orientation assumed by this layerer.

Methods inherited from class java.lang.Object

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

Constructor Detail

AsIsLayerer

public AsIsLayerer()

Method Detail

setOrientation

public void setOrientation(byte orientation)

Sets the orientation assumed by this layerer. By default LayoutOrientation.TOP_TO_BOTTOM is set.

Parameters:

orientation - one of LayoutOrientation.TOP_TO_BOTTOM, LayoutOrientation.LEFT_TO_RIGHT, LayoutOrientation.RIGHT_TO_LEFT, and LayoutOrientation.BOTTOM_TO_TOP.

getOrientation

public byte getOrientation()

Returns the orientation assumed by this layerer.

See Also:

AsIsLayerer.setOrientation(byte)

assignNodeLayer

public int assignNodeLayer(LayoutGraph g,
                           NodeMap layerMap,
                           EdgeList reversedEdges)

Description copied from interface: Layerer

This method assigns the nodes in the graph to layers.

Specified by:

assignNodeLayer in interface Layerer

Parameters:

g - the graph for which the layers are determined.

layerMap - here the layers are stored

reversedEdges - here the edges are stored which had been reversed.

Returns:

the number of layers