[vtkusers] change the color of the"picked" cell

[Tracy]

Sorry, I didn't explain my question clearly.

My application is to display a 3D model with a group of PolyData cell.
This model is represented by an actor. I use vtkCellPicker to select a
specific cell, when the cursor is over this cell, I want to change the 
colour
of the selected cell without any affection to the rest of cells.

Any suggestion?

----- Original Message ----- 
From: "Paul Tait - OPES" <Paul at opes.com.au>
To: "'Tracy'" <flypureau at hotmail.com>; "'de Boer Ingo'" 
<I.deBoer at polytec.de>
Cc: "'vtkuser'" <vtkusers at vtk.org>
Sent: Wednesday, March 16, 2005 11:26 AM
Subject: RE: [vtkusers] change the color of the"picked" cell


> Actor->GetProperty()->SetColor(1, 1, 1);
>
> -----Original Message-----
> From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On
> Behalf Of Tracy
> Sent: Wednesday, 16 March 2005 9:03 AM
> To: de Boer Ingo
> Cc: vtkuser
> Subject: [vtkusers] change the color of the"picked" cell
>
>
> Hi Dr  Ingo,
>
> Thanks for your quick and helpful reply. Based on your suggestion, my
> code works now.
>
> But I also got another question:
>
> How to change the colour of the "picked" cell which is implemented by
> vtkCellPicker?
> I work with a 3D vtkPolyData model.
>
> Thanks in advance.
>
> Tracy
>
> ----- Original Message ----- 
> From: "de Boer Ingo" <I.deBoer at polytec.de>
> To: "Tracy" <flypureau at hotmail.com>; "vtkuser" <vtkusers at vtk.org>
> Sent: Tuesday, March 15, 2005 6:19 PM
> Subject: RE: [vtkusers] vtk picking
>
>
> Hi Tracy,
>
> you get "-1" because you didn't start the picker callback.
> with StartPickCallback. Look at the lines of vtkInteractorStyle.cxx:
> Search for "'p'". This is what happens, when you press "p". Your version
> works with LeftButtonPressEvent when you press "p" before you press the
> left mouse button.
>
> The easiest way for you would be to write your own interactor.
>
> greets
>  Ingo
>
> ---
> Dr.-Ing. Ingo H. de Boer
>
> Polytec GmbH
> Polytec-Platz 1-7, 76337 Waldbronn, Germany
> phone: ++49 7243 604 106
> fax  : ++49 7243 604 255
>
>
>> It is my first time to use vtkCellPicker and the related classes.
>> Unfortunately, I never get any code works well for me regardless of
>> writing by myself or downloading from Internet. One example is from
>> http://public.kitware.com/pipermail/vtkusers/2004-April/073344.html,
>> but it looks that "vtkCommand::EndPickEvent" doesn't show any effect,
>> if I use "LeftButtonPressEvent" instead of "EndPickEvent" ,
>> the printed
>> value is always "-1" ,which means I never picked any point.
>> Anybody can tell me why?
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