[vtkusers] slow rendering

[Matthias Härtel]

Hey,

you can try to use the immediate mode on your polyDataMapper. This mode 
is default off. To turn on use something like this:
mapper->ImmediateRenderModeOn();
I have read last month this post: 
http://vtk.1045678.n5.nabble.com/Speeding-up-Vector-Representation-td1224530.html
and figure out, that turning the immediate mode on for my polydata, 
there is a great performance boost!

Many Greetings,
Matthias



Am 30.11.2012 10:52, schrieb abusq:
> Hi everyone,
> i have a problem with slow rendering of my model when I interact with him.
> Here's a code snippet to explain better my problem:
>
> void MouseInteractorStylePP::OnMouseMove()
>
>      // Capturing interaction  //
>      // ... //
>
>      // Getting point's reference of my figure. pdfigure is my model's
> polydata
>      float* figure_points =
> reinterpret_cast<float*>(pdfigure->GetPoints()->GetVoidPointer(0));
>
>      // computing my new points coordinates and write it on figure_points
> pointer
>
>      // Updating polydata
>      this->pdfigure->Modified();
> 						
>      // Render
>      this->GetCurrentRenderer()->GetRenderWindow()->Render();
>
> The computation of points coordinates takes about 20 ms (no problem) but
> calling Modified() and Render() about 1-2 secs. So it's too slow!
> I'm working with 543.652 vertices and 1.087.716 triangles and using
> vtkPolyData.
> So... there're another way to do better/faster?
>
> Thanks a lot!
>
>
>
>
>
> --
> View this message in context: http://vtk.1045678.n5.nabble.com/slow-rendering-tp5717346.html
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