[Insight-users] Get the selection point in screen (pixel) coordinates

[Xiaopeng Yang]

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Please help me. I really need your help!


--- Original Message ---


From : 
"Xiaopeng Yang"<yxp233 at postech.ac.kr>


To : 
<vtkusers at vtk.org>, <insight-users at itk.org>


Date : 
2010/11/29 월요일 오후 10:28:50


Subject : 
[Insight-users] Get the selection point in screen (pixel) coordinates





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Dear friends,



I applied vtkPointPicker to pick a point in screen (pixel) coordinates from a dataset. The data are a series of CT images. However, there are two problems: 1) the z value is always 0, no matter in which slice I pick a point; 2) the x and y values are different from other programs like MITK. I compared the values of the same point between my program and MITK. MITK shows that the z value changes according to which slice you are in to pick a point.



Here is my code:






double


 


std::cout <<


index[3];
this
->Interactor->GetPicker()->GetSelectionPoint(index);
"Index: "
 << index[0] << 
" "
 << index[1] << 
" "
 << index[2] << std::endl;













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Ergonomic Design Technology Lab

            Dept. of Industrial and Management Engineering

            Pohang Univ. of Science and Technology

            South Korea

            Tel: 82-54-279-8246

            HP: 82-10-9794-0110

        

    





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Ergonomic Design Technology Lab

Dept. of Industrial and Management Engineering

Pohang Univ. of Science and Technology

South Korea

Tel: 82-54-279-8246

HP: 82-10-9794-0110
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