org.openstreetmap.josm.command

Class ScaleCommand

java.lang.Object

org.openstreetmap.josm.command.Command

org.openstreetmap.josm.command.TransformNodesCommand

org.openstreetmap.josm.command.ScaleCommand

All Implemented Interfaces:

PseudoCommand

public class ScaleCommand
extends TransformNodesCommand

Command, to scale a given set of primitives. The relative distance of the nodes will be increased/decreased.

Nested Class Summary

Nested classes/interfaces inherited from class org.openstreetmap.josm.command.Command

Command.OldNodeState

Field Summary

Fields

Modifier and Type	Field and Description
private EastNorth	pivot Pivot point
private double	scalingFactor Current scaling factor applied
private EastNorth	startEN World position of the mouse when the user started the command.

Fields inherited from class org.openstreetmap.josm.command.TransformNodesCommand

nodes, oldStates

Fields inherited from class org.openstreetmap.josm.command.Command

IS_INCOMPLETE, IS_OK, IS_OUTSIDE

Constructor Summary

Constructors

Constructor and Description
ScaleCommand(java.util.Collection<? extends OsmPrimitive> objects, EastNorth currentEN) Creates a ScaleCommand.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
java.lang.String	getDescriptionText() Provides a description text representing this command.
void	handleEvent(EastNorth currentEN) Compute new scaling factor and transform nodes accordingly.
int	hashCode()
protected void	setScalingFactor(double scalingFactor) Set the scaling factor
protected void	transformNodes() Scale nodes.

Methods inherited from class org.openstreetmap.josm.command.TransformNodesCommand

executeCommand, fillModifiedData, flagNodesAsModified, getDescriptionIcon, getNodesCenter, getParticipatingPrimitives, getTransformedNodes, storeOldState, undoCommand

Methods inherited from class org.openstreetmap.josm.command.Command

checkOutlyingOrIncompleteOperation, ensurePrimitivesAreInDataset, getAffectedDataSet, getOrig

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openstreetmap.josm.command.PseudoCommand

getChildren

Field Detail

pivot

private final EastNorth pivot

Pivot point

scalingFactor

private double scalingFactor

Current scaling factor applied

startEN

private final EastNorth startEN

World position of the mouse when the user started the command.

Constructor Detail

ScaleCommand

public ScaleCommand(java.util.Collection<? extends OsmPrimitive> objects,
                    EastNorth currentEN)

Creates a ScaleCommand. Assign the initial object set, compute pivot point. Computation of pivot point is done by the same rules that are used in the "align nodes in circle" action.

Parameters:

objects - objects to fetch nodes from

currentEN - cuurent eats/north

Method Detail

handleEvent

public final void handleEvent(EastNorth currentEN)

Compute new scaling factor and transform nodes accordingly.

Specified by:

handleEvent in class TransformNodesCommand

Parameters:

currentEN - the current world position of the mouse

setScalingFactor

protected void setScalingFactor(double scalingFactor)

Set the scaling factor

Parameters:

scalingFactor - The scaling factor.

transformNodes

protected void transformNodes()

Scale nodes.

Specified by:

transformNodes in class TransformNodesCommand

getDescriptionText

public java.lang.String getDescriptionText()

Description copied from interface: PseudoCommand

Provides a description text representing this command.

Specified by:

getDescriptionText in interface PseudoCommand

Overrides:

getDescriptionText in class TransformNodesCommand

Returns:

description text representing this command

hashCode

public int hashCode()

Overrides:

hashCode in class TransformNodesCommand

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class TransformNodesCommand