[vtkusers] Given a node, emphasize the incident edges

[Steffen Oeltze]

Hi Jeff,

thanks a lot for the hint. I found what I needed. Unfortunately, I am 
not able to transfer the example to my
own project. The CustomLinkView-project compiles fine. However, when I 
add the following line to my project, I receive an error:

        - from CustomLinkView:

Connections->Connect(
     this->TableView->GetRepresentation(),
     vtkCommand::SelectionChangedEvent,
     this,
     SLOT(selectionChanged(vtkObject*, unsigned long, void*, void*)));

        - my example:

c_connections = vtkSmartPointer<vtkEventQtSlotConnect>::New();

c_connections->Connect(
     this->GetRepresentation(),  // this points to my own class which I 
derived from "vtkQtTableView"
     vtkCommand::SelectionChangedEvent,
     this,
     SLOT(selectionChanged(vtkObject*, unsigned long, void*, void*)));

         - error:

error C2664: 'vtkEventQtSlotConnect::Connect' : cannot convert parameter 
1 from 'vtkDataRepresentation *' to 'vtkObject *'
1>        Types pointed to are unrelated; conversion requires 
reinterpret_cast, C-style cast or function-style cast

Do you have any idea why this is happening?

Cheers,
Steffen






On 25.02.2011 16:14, Jeff Baumes wrote:
> A good place to start is in the VTK repository under 
> Examples/Infovis/Cxx/CustomLinkView. You need to register an observer 
> on the view representation's SelectionChangedEvent.
>
> Jeff
>
> On Fri, Feb 25, 2011 at 1:38 AM, Steffen Oeltze 
> <stoeltze at isg.cs.uni-magdeburg.de 
> <mailto:stoeltze at isg.cs.uni-magdeburg.de>> wrote:
>
>     Hi Jeff,
>
>     thanks a lot for the reply. Could you please give me a hint on
>     where to implement this strategy. I guess that there is an
>     interactor from which I should derive my own
>     "DoSomethingWithTheSelection"-methods? I just don't know exactly
>     how to start.
>
>     Best Regards,
>     Steffen
>
>
>     Am 23.02.2011 21:53, schrieb Jeff Baumes:
>>     This is the same approach I would take. I don't know of any
>>     existing implementations that perform that same function.
>>
>>     Jeff
>>
>>     On Tue, Feb 22, 2011 at 10:05 AM, Steffen Oeltze
>>     <stoeltze at isg.cs.uni-magdeburg.de
>>     <mailto:stoeltze at isg.cs.uni-magdeburg.de>> wrote:
>>
>>         Hi,
>>
>>         in my graph visualization, I would like to visually emphasize
>>         all edges which are connected to a user-selected node. Is
>>         there an implementation which I can use for that purpose?
>>         Otherwise, I would try the following strategy: (1) get the
>>         selected node, (2) find incident edges using
>>         vtkAdjacentVertexIterator, and (3) emphasize these edges.
>>
>>         Best Regards,
>>         Steffen
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>>
>>
>>     -- 
>>     Jeff Baumes, Ph.D.
>>     Technical Lead, Kitware Inc.
>>     (518) 881-4932
>
>
>
>
> -- 
> Jeff Baumes, Ph.D.
> Technical Lead, Kitware Inc.
> (518) 881-4932

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