Class LogarithmicLink<T>

java.lang.Object

com.dlsc.gemsfx.treeview.link.AbstractLinkStrategy<T>

com.dlsc.gemsfx.treeview.link.LogarithmicLink<T>

Type Parameters:

T - the type of the data value stored in each tree node

All Implemented Interfaces:

LinkStrategy<T>

public class LogarithmicLink<T>
extends AbstractLinkStrategy<T>

A LinkStrategy that draws a link whose path follows a logarithmic curve.

The path is approximated by 10 line segments whose positions are computed using log₂(1 + fraction) along the primary axis. This produces a curve that accelerates quickly near the parent node and then levels off as it approaches the child node. A small directional arrow is added at the child end.

Field Summary

Fields inherited from class AbstractLinkStrategy

endX, endY, startX, startY

Constructor Summary

Constructors

Constructor	Description
LogarithmicLink()

Method Summary

Modifier and Type	Method	Description
protected ArrayList<javafx.scene.Node>	drawLink(TreeNodeView.LayoutDirection direction, double maxDimensionInLine, double startX, double startY, double endX, double endY, double vgap, double hgap)	Draws the link for the given start and end coordinates.

Methods inherited from class AbstractLinkStrategy

calculateAngle, calculateAngle, calculateAngle, calculateAngle, calculateEndPoints, createSimpleArrow, drawNodeLink, getTangentAngle, getTangentAngle, getTangentAngle

Methods inherited from class Object

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

Constructor Details

LogarithmicLink

public LogarithmicLink()

Method Details

drawLink

protected ArrayList<javafx.scene.Node> drawLink(TreeNodeView.LayoutDirection direction,
 double maxDimensionInLine,
 double startX,
 double startY,
 double endX,
 double endY,
 double vgap,
 double hgap)

Draws the link for the given start and end coordinates.

Specified by:

drawLink in class AbstractLinkStrategy<T>

Parameters:

direction - the layout direction

maxDimensionInLine - the maximum node dimension in the active line

startX - the x-coordinate of the link start

startY - the y-coordinate of the link start

endX - the x-coordinate of the link end

endY - the y-coordinate of the link end

vgap - the vertical gap between levels

hgap - the horizontal gap between levels

Returns:

the nodes used to render the link