[vtkusers] [Insight-users] Seed point id identification

[Xiaopeng Yang]

Hi David,

Thank you for the answer. I apologize that I raised the wrong question. What I would like to pick is not the cell id, but the index of a point. For example, using Picker->GetPickPosition(pos) we can get the world coordinates of a point. Then what we can use to get the index of that point?

In MITK, if we click a point, the software shows Position:<-95.9787,-143.735,793.9>mm; Index: <108,270,377>. I know we can use GetPickPosition to obtain the world coordinates. But I do not know how to get the Index of that point.

Best regards,
Xiaopeng

-----邮件原件-----
发件人: David Doria [mailto:daviddoria at gmail.com] 
发送时间: 2010년 11월 10일 수요일 오전 11:36
收件人: Xiaopeng Yang
抄送: itk; vtkusers at vtk.org
主题: Re: [Insight-users] Seed point id identification

> As we know that in the PickPixel example, the world position of a seed point
> was picked by vtkPropPicker. However, I want to pick the cell id of that
> point. Because, in ITK, cell id is used for setting seed point position. So
> do you know how to pick the cell id?

Is this what you're looking for?

http://www.vtk.org/Wiki/VTK/Examples/Cxx/Picking/CellPicking

David