Package org.opennms.features.topology.app.internal.jung

Class GridLayoutAlgorithm

java.lang.Object

org.opennms.features.topology.app.internal.jung.AbstractLayoutAlgorithm

org.opennms.features.topology.app.internal.jung.GridLayoutAlgorithm

All Implemented Interfaces:

LayoutAlgorithm, LayoutConstants

public class GridLayoutAlgorithm
extends AbstractLayoutAlgorithm

Field Summary

Fields inherited from interface org.opennms.features.topology.app.internal.jung.LayoutConstants

ELBOW_ROOM, LAYOUT_HEIGHT, LAYOUT_WIDTH, SPRING_FORCE_MULTIPLIER, SPRING_LAYOUT_REPULSION

Constructor Summary

Constructors

Constructor	Description
GridLayoutAlgorithm()

Method Summary

Modifier and Type	Method	Description
protected static BoundingBox	calculateGrid(int N, int width, int height)	Calculates a grid of width W and height H such that: W * H >= N W/H ~= width/height
void	updateLayout(Graph graph)	Updates the current layout by extracting the containers graph and then perform a (x,y) transformation of all vertices.

Methods inherited from class org.opennms.features.topology.app.internal.jung.AbstractLayoutAlgorithm

initializer, initializer, selectLayoutSize

Methods inherited from class java.lang.Object

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

Constructor Detail

GridLayoutAlgorithm

public GridLayoutAlgorithm()

Method Detail

updateLayout

public void updateLayout(Graph graph)

Updates the current layout by extracting the containers graph and then perform a (x,y) transformation of all vertices.

Specified by:

updateLayout in interface LayoutAlgorithm

Specified by:

updateLayout in class AbstractLayoutAlgorithm

Parameters:

graph - The container of the current graph. Contains all relevant information to perform the transformation of the Graph by changing its Layout

calculateGrid

protected static BoundingBox calculateGrid(int N,
                                           int width,
                                           int height)

Calculates a grid of width W and height H such that: W * H >= N W/H ~= width/height