Re: getImage of DisplayImplJ2D

• To: Astrid Wonner <Astrid.wonner@xxxxxx>
• Subject: Re: getImage of DisplayImplJ2D
• From: "From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>" <billh@xxxxxxxxxxxxx>
• Date: Sun, 21 Jan 2001 09:16:18 -0600 (CST)

Hi Astrid,

Your getBufferedImage() method returns null because it does
not synchronize with the new Thread it creates.  It returns
VectorImage before the Thread's call to getImage() returns.

Have you tried simply calling display.getImage() from the
getBufferedImage() method? If that doesn't work, then move
the code that processes the BufferedImage into the run()
method of your new Thread.

Some of the other VisAD developers know more about printing
than I do - perhaps they will comment.

Cheers,
Bill
----------------------------------------------------------
Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
hibbard@xxxxxxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738
http://www.ssec.wisc.edu/~billh/vis.html


On Sun, 21 Jan 2001, Astrid Wonner wrote:

> Hello!!
> 
> I have a number of Panels containing DisplayImplJ2Ds in one Frame. Now I want 
> to print them with one PrinterJob and so try to get Images with the following 
> method in the class producing them: 
> 
> public BufferedImage getBufferedImage()
>   {
>     Runnable gettingImage = new Runnable()
>     {
>      public void run()
>       {
>         try
>         {
>           VectorImage = display.getImage();
>         }
>         catch (Exception pe) { pe.printStackTrace(); }
>       }
>     };
> 
>     Thread t = new Thread(gettingImage);
>     t.start();
>     
>     return VectorImage;
>   }
> 
> All I get is an empty Image. I've read all about it in the 
> Mailing-List-Archive (e.g. the Thread-idea) but found nothing that runs... 
> Can somebody help me?
> Thanks
> 
> Astrid
> 

• References:
  • getImage of DisplayImplJ2D
    • From: Astrid Wonner