[vtkusers] rendering isosurface and crashing

[Jeff Lee]

dsjen at cs.unc.edu wrote:

>Hi Jeff,
>
>I'm not using threads, at least not explicitly.  
>
using java = using threads.  even if you aren't explicitly creating your 
own, there is always the event thread (AWT) for the ui, and there is the 
main thread, the gc thread, etc...  not too bad once you understand the 
model and then its pretty easy to see where problems could occur when 
dealing with non-thread-safe libs.  good luck
-Jeff

>A friend suggested 
>the same thing.  I haven't gotten it to successfuly work though (I'm 
>not that familar with Java threads), but his explaination sounds very 
>similar to yours -- that the isosurface is being calculated in 
>parallel, while the volume rendering occurs during rendering time, 
>thus when the program tries to render before the isosurface is 
>finished, it dies.  Ah, mutual exclusion...
>
>To solve this, my friend's suggestion was to remove the isosurface 
>from the actor list until the isosurface is complete, then add it 
>back, so that it can be rendered.  Again, I haven't gotten this to 
>work, but it kind of makes sense.
>
>- Dennis
>
>----- Original Message -----
>From: Jeff Lee <jeff at cdnorthamerica.com>
>Date: Friday, June 27, 2003 6:12 am
>Subject: Re: [vtkusers] rendering isosurface and crashing
>
>  
>