[vtkusers] Combine vtkChart with QVTKWidget

[Marcus D. Hanwell]

Hi,

On Fri, May 3, 2013 at 8:55 AM, curator <curator at gmx.de> wrote:
> Hi all,
>
> I am working with a QVTKWidget to display my geometry. Therefore each
> "object" has a own vtkActor and and I add these vtkActors to the renderer of
> QVTKWidget. So far, so good.
>
> To start with vtkCharts, I found the following example (see below). With
> this code, I am able to open a new vtkwindow which presents two plots.
> However, I dont want to open the chart in a new window, but insert it in the
> existing QVTKWidget IN ADDITION to the former scene. Actually, I want to
> have somethi g like in
> http://www.na-mic.org/Wiki/images/1/18/NA-MIC-VTK-Charts-2011.pdf on page
> 19. So, I though of inheriting another object which has a vtkActor and can
> be added and removed from my scene. Inside this class i would like to
> implement, as a starting point, the curves from the example, but I have no
> idea how to connect the vtkchart stuff with a vtkActor. Maybe this it a
> totally wrong approach.
>
I wrote those slides, and you can do that by adding a vtkContextActor
to the renderer, and we have a test demonstrating this,

https://github.com/Kitware/VTK/blob/master/Charts/Core/Testing/Cxx/TestChartsOn3D.cxx

The problem is that the chart will not receive interactive events, but
it can be shown as an overlay.

Hope that helps.

Marcus