Hi Federico,
this sounds to me as something that might be useful in general and could
be contributed back to MITK (even though my node picking pull request
has been lying around for almost a year I think).
So if I were you, I would modify my MITK fork by changing mitk::Surface
itself and adding something like vtkCellLocator* GetCellLocator(int time
= 0) which would create a cell locator upon request from
SurfaceVtkMapper3D if a certain property is set in the node.
Rostislav.
On 15/09/2015 15:35, Kislinskiy, Stefan wrote:
Hi,
I’m not familiar with the mechanics of vtkCellLocator/vtkCellPicker,
but from a code design perspective, subclassing the mapper could be a
possibility. You should be able to set your own mapper with
mitk::DataNode::SetMapper(). However, I would not recommend that, as
it would involve a lot of extra code for the actual thing you are
trying to achieve. Is it possible in your case to write a filter for
that purpose which is located between the surface and the mapper? You
might have manually call Modified() on the DataNode which holds the
connected surface though.
Best,
Stefan
*From:*Federico Milano [mailto:fmil...@gmail.com]
*Sent:* Samstag, 12. September 2015 22:43
*To:* mitk-users@lists.sourceforge.net
*Subject:* [mitk-users] Accelerating 3D picking
Hi. I'm working with surfaces that have a very large quantity of
cells. I'm doing a lot of picking (for interaction) on them. The
problem is that picking with the vtkCellPicker is very slow if not
optimized with vtkCellLocators. But the vtkCellLocators added to the
vtkCellPicker have to be always in sync with the PolyDataMappers used
by the scene renderer. Right now I'm keeping a list of surfaces added
to the vtkCellPicker in my plugin. In this implementation, the
vtkCellLocators are updated only when some plugin operation is
triggered. I don't really like this so much.
Where do you recommend me to store the vtkCellLocator to be able to
update it when the vtkPolyData is updates? Do you recommend me to
subclass the SurfaceMapper3D and add code there to manage the
vtkCellLocator?
Thanks in advance,
Federico
------------------------------------------------------------------------------
_______________________________________________
mitk-users mailing list
mitk-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/mitk-users
------------------------------------------------------------------------------
Monitor Your Dynamic Infrastructure at Any Scale With Datadog!
Get real-time metrics from all of your servers, apps and tools
in one place.
SourceForge users - Click here to start your Free Trial of Datadog now!
http://pubads.g.doubleclick.net/gampad/clk?id=241902991&iu=/4140
_______________________________________________
mitk-users mailing list
mitk-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/mitk-users
