[vtkusers] interactor with one renwin and multiple renderers

[Róbert Špir]

Hi Miro,

I'm doing similar task. You can derive your own interactorstyle class from
one of the vtkInteractorStyle classes. There you can override mouse and key
event functions and using this->Interactor->FindPokedRenderer(mouseX,
mouseY); you can detect to which of the multiple renderers the user clicked
and handle the interaction according to your needs.

Robert

 

From: vtkusers [mailto:vtkusers-bounces at vtk.org] On Behalf Of Miroslav
Drahos
Sent: Thursday, December 8, 2016 10:44 PM
To: vtkusers at vtk.org
Subject: [vtkusers] interactor with one renwin and multiple renderers

 

Hi VTK folks,

I am trying to optimize my application, and am thinking to replace multiple
QVTKWidget2 instances with only one widget + multiple viewports/renderers.
Then I could issue only one expensive call to vtkRenderWindow::Render() and
re-draw everything.

I saw the example for multiple viewports
(http://www.vtk.org/Wiki/VTK/Examples/Cxx/Visualization/MultipleViewports)
and it all looks very straightforward, but...

How do I handle interaction? Let's say in a typical quad view setup of a
medical application, with 3 orthogonal slices and one 3D view there are
different interactor styles needed. But it is the renderwindow that provides
interactor, so in the tiled version I would end up with only one common
interactor/interactor style.

Any advice is greatly appreciated!

Miro

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/vtkusers/attachments/20161209/73e4ff69/attachment.html>