Package org.eclipse.gef.fx.anchors

Class ChopBoxStrategy

java.lang.Object

org.eclipse.gef.fx.anchors.ProjectionStrategy

org.eclipse.gef.fx.anchors.ChopBoxStrategy

All Implemented Interfaces:

IComputationStrategy

public class ChopBoxStrategy
extends ProjectionStrategy

A specific projection strategy that is based on a center-projection of the given reference point.

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.gef.fx.anchors.IComputationStrategy

IComputationStrategy.Parameter<T>

Constructor Summary

Constructors

Constructor	Description
ChopBoxStrategy()

Method Summary

Modifier and Type	Method	Description
protected Point	computeAnchorageReferencePointInLocal(javafx.scene.Node anchorage, IGeometry geometryInLocal, Point anchoredReferencePointInAnchorageLocal)	Computes the anchorage reference position within the coordinate system of the given IGeometry.
protected Point	computeAnchorageReferencePointInScene(javafx.scene.Node anchorage, IGeometry geometryInLocal, Point anchoredReferencePointInScene)	Computes the anchorage reference position in scene coordinates, based on the given anchorage geometry.
Point	computePositionInScene(javafx.scene.Node anchorage, javafx.scene.Node anchored, Set<IComputationStrategy.Parameter<?>> parameters)	Computes an anchor position based on the given anchorage visual, anchored visual, and anchored reference point.

Methods inherited from class org.eclipse.gef.fx.anchors.ProjectionStrategy

computeProjectionInScene, getOutlineSegments, getRequiredParameters

Methods inherited from class java.lang.Object

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

Constructor Details

ChopBoxStrategy

public ChopBoxStrategy()

Method Details

computeAnchorageReferencePointInLocal

protected Point computeAnchorageReferencePointInLocal(javafx.scene.Node anchorage,
 IGeometry geometryInLocal,
 Point anchoredReferencePointInAnchorageLocal)

Computes the anchorage reference position within the coordinate system of the given IGeometry. Will return the center of a IShape or Path geometry, if it is contained within the shape or path. Will return null otherwise to indicate that the computation should fall back to the nearest projection on the anchorage geometry outline.

Parameters:

anchorage - The anchorage visual.

geometryInLocal - The anchorage geometry within the local coordinate system of the anchorage visual.

anchoredReferencePointInAnchorageLocal - Reference point of the anchored for which to determine the anchorage reference point. Within the local coordinate system of the anchorage.

Returns:

A position within the given IGeometry, or null if the computation should rather fall back to the nearest projection.

computeAnchorageReferencePointInScene

protected Point computeAnchorageReferencePointInScene(javafx.scene.Node anchorage,
 IGeometry geometryInLocal,
 Point anchoredReferencePointInScene)

Computes the anchorage reference position in scene coordinates, based on the given anchorage geometry.

Parameters:

anchorage - The anchorage visual.

geometryInLocal - The anchorage geometry within the coordinate system of the anchorage visual.

anchoredReferencePointInScene - The reference Point of the anchored for which the anchorage reference Point is to be determined.

Returns:

The anchorage reference position in scene coordinates or null if the computation should rather fall back to the nearest projection.

See Also:

• computeAnchorageReferencePointInLocal(Node, IGeometry, Point)

computePositionInScene

public Point computePositionInScene(javafx.scene.Node anchorage,
 javafx.scene.Node anchored,
 Set<IComputationStrategy.Parameter<?>> parameters)

Description copied from interface: IComputationStrategy

Computes an anchor position based on the given anchorage visual, anchored visual, and anchored reference point.

Specified by:

computePositionInScene in interface IComputationStrategy

Overrides:

computePositionInScene in class ProjectionStrategy

Parameters:

anchorage - The anchorage visual.

anchored - The anchored visual.

parameters - The available computation parameters. strategy.

Returns:

The anchor position.