y.view
Class Scroller

java.lang.Object
  |
  +--y.view.Scroller

All Implemented Interfaces:

Runnable

public class Scroller

extends Object

implements Runnable

This is a class which scrolls a view in direction with a certain speed. The speed can be changed via a synchronized method. This class is especially usefull when run in a separate thread. A Vector is drawn in the direction of the scrolling.

Constructor Summary

Scroller(Graph2DView view, double xpress, double ypress)
Constructs a new Scroller for a given view.

Method Summary

void	run() Loop, in which the scrolling performs
void	setDirection(double x, double y) Sets the direction of the scrolling by a direction vector (x,y).
void	stopScroller() Stops the thread.

Methods inherited from class java.lang.Object

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

Constructor Detail

Scroller

public Scroller(Graph2DView view,
                double xpress,
                double ypress)

Constructs a new Scroller for a given view. The given world coordinates represent an initial reference point for the Scroller.

Method Detail

stopScroller

public void stopScroller()

Stops the thread.

setDirection

public void setDirection(double x,
                         double y)

Sets the direction of the scrolling by a direction vector (x,y). The speed is proportional to the length of this vector.

run

public void run()

Loop, in which the scrolling performs

Specified by:

run in interface Runnable