bubble level

[wu7up]

Hi, all

I need to do a small graph like a bubble level in my Applet.

Given 3 values, X, Y, Z Accelerations, the bubble should be drawn there in the target panel of the graph, Just like a bubble level, or inclination indicator.

I checked JFreeChart, as well as com.objectplanet.chart.ext.GaugeChart, neither seems to do this.

Any suggestions?


Thanks,
Jerry

[wu7up]

got the solution:

just extend the JLabel and override the protected void paintComponent(Graphics g).

In this customized control, I can draw 2 circles (same center, different radius) in the paintComponent function.

and the position of the "bubble" can be determined by the x, y, z parameters, which can be set by a public function.




class BubbleLevel extends JLabel{

private int x,y,z;


public synchronized void SetBubblePosition(int a, int b, int c){...}

protected void paintComponent(Graphics g)
{ // draw 2 circles, and the bubble based on x, y, z }


}


Then in the code:

BubbleLevel bl = new BubbleLevel();

bl.SetBubblePosition(x, y , z);
bl.repaint();

[keang]

Thanks for posting your solution.

If you aren't using any of the features of JLabel you may be better off extending JPanel.