[vtkusers] Rendering problem

[Randall Hand]

You can also call "->Modified()" on the sphere object once you've modified
it.. that *should* force a pipeline update, I think.

On 5/27/06, Geoff Smith <exine at gmx.net> wrote:
>
> Hi!
>
> I'm having some very confusing problems. I'm trying to move a sphere
> around with a haptic feedback device and am getting the 3D coordinates into
> my program no problem. I then update the sphere centre with these
> cordinates. Now this is where it gets weird, if i don't attempt to call
> render() on the renderwindow nothing changes in the window until i move the
> scene around a little with the mouse. Then the scene is update and the
> sphere is moved as expected. Now I want to see the movement in real time, so
> i have a callback which goes back to the class with the renderwindow and
> render etc. This callback calls render() on the render window. After this
> the sphere dissapears from the scene. I've checked the sphere centre and it
> is normal - so it hasn't actually left the scene. Nothing else is being
> touched, i.e. the actor, mapper, etc. The other objects in the scene are
> still shown as normal. I can't seem to find out why it's disappearing...
>
> Is this the best way to force the window to render or is there a better
> way? Does anyone have any suggestions?
>
> Cheers,
>
> Geoff
> --
>
>
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