[vtkusers] Help needed

[Sean McInerney]

Soumen,

   vtkRenderWindow does not have a facility for defining a "damage 
region" for redrawing, so each time Render() is called the buffers swap 
and the glClear() is called. The best way to implement what you desire 
is with 2 RenderWindows (one for the volume, one for the slices).

   In spite of what I have just said, you could experiment with the 
Renderers' BackingStore and Erase ivars to achieve an undisturbed volume 
renderer during update of the slice renderers. One of the Kitware 
developers may want to comment on the feasibility of this, however.

-Sean

soumen dey wrote:
> Hi!!!!
>  
> I have 4 renderers in a render window. Among them one contains volume rendered data.  Since other 3 renderers contain slice data and required to be updated on demand ( on mouse click) what I want to do is to update those 3 renderer without refreshing the first one as updating all the 4 renderer making user interacton very slow . 
>  
> How can i do this?
>  
> Thnx
>  
> soumen
>