net.mumie.mathletfactory.action.handler.global

Class GlobalKeyboard3DRotateXYHandler

java.lang.Object

net.mumie.mathletfactory.action.handler.global.GlobalHandler

net.mumie.mathletfactory.action.handler.global.Global3DHandler

net.mumie.mathletfactory.action.handler.global.GlobalKeyboard3DRotateXYHandler

public class GlobalKeyboard3DRotateXYHandler
extends Global3DHandler

This handler allows the user to "orbit" the viewer around the origin of the world coordinate system (thus virtually rotating it) by pressing the the arrow keys.

Author:

Paehler

Document status:

finished

Field Summary

Fields inherited from class net.mumie.mathletfactory.action.handler.global.GlobalHandler

m_active, m_canvas

Constructor Summary

Constructors

Constructor and Description
GlobalKeyboard3DRotateXYHandler(MM3DCanvas canvas) Constructs the handler to work in the given canvas.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	doAction(MMEvent event) Rotates the scene the set angle about the world transformed view x and y coordinates.
void	finish() Adds a snapshot to the history of the canvas.
GlobalKeyboard3DRotateXYHandler	setAngleInDegree(double anAngle) Sets the angle the scene is rotated for every key press.
boolean	userDefinedDealsWith(MMEvent event) Returns whether this instance is able to work with the given MMEvent.

Methods inherited from class net.mumie.mathletfactory.action.handler.global.Global3DHandler

getCanvas3D

Methods inherited from class net.mumie.mathletfactory.action.handler.global.GlobalHandler

dealsWith, getCanvas, isActive, setActive

Methods inherited from class java.lang.Object

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

Constructor Detail

GlobalKeyboard3DRotateXYHandler

public GlobalKeyboard3DRotateXYHandler(MM3DCanvas canvas)

Constructs the handler to work in the given canvas.

Method Detail

finish

public void finish()

Adds a snapshot to the history of the canvas.

Overrides:

finish in class Global3DHandler

doAction

public boolean doAction(MMEvent event)

Rotates the scene the set angle about the world transformed view x and y coordinates.

Specified by:

doAction in class GlobalHandler

See Also:

net.mumie.mathletfactory.action.handler.global.MMGlobalHandler#doAction(MMEvent)

userDefinedDealsWith

public boolean userDefinedDealsWith(MMEvent event)

Description copied from class: GlobalHandler

Returns whether this instance is able to work with the given MMEvent.

This method will typically be called from within the controlAction(MMEvent) method of a CanvasControllerIF (e.g. DefaultCanvasController), to check if this instance can be invoked by calling this GlobalHandler's doAction method with the given MMEvent.
Attention: This method will always return false if GlobalHandler.isActive() returns false, i.e. if this GlobalHandler was deactivated.

Specified by:

userDefinedDealsWith in class GlobalHandler

setAngleInDegree

public GlobalKeyboard3DRotateXYHandler setAngleInDegree(double anAngle)

Sets the angle the scene is rotated for every key press.