[vtkusers] [Insight-users] Saving seed points in ImagePlaneWidget

[Luis Ibanez]

Hi Xiaopen,

Capture the "EndPickEvent" with an Observer,
and in the execute method of the observer,
extract the coordinates of the point with code
similar to:

  double data[3];
  picker->GetPickPosition( data );

  itk::Point< double, 3 > pickedPoint;
  pickedPoint[0] = data[0];
  pickedPoint[1] = data[1];
  pickedPoint[2] = data[2];


---

See the example:

VTK/Examples/Annotation/Python/annotatePick.py


   Regards,


         Luis

----------------------------------------------------------------
On Mon, Oct 25, 2010 at 2:15 AM, Xiaopeng Yang <yxp233 at postech.ac.kr> wrote:

>  Hello everyone,
>
>
>
> I am working on developing a simple medical image segmentation program,
> which provide interactive selection and automatic saving function of
> multiple seed points. That means when left-clicking on one of the CT slices,
> the 3D position of that point will be automatically saved to the code.
>
>
>
> I applied ImagePlaneWidget to pick the position of certain clicked point.
> The position and intensity value can be shown on the screen. But I have no
> idea how to program to save the position to the code. Could you give me a
> hand about how to solve this problem?
>
>
>
> Here is the code of ImagePlaneWidget:
>
>
>
>   vtkImagePlaneWidget * zImagePlaneWidget =  vtkImagePlaneWidget::New();
>
>
>
>   zImagePlaneWidget->DisplayTextOn();
>
>   zImagePlaneWidget->SetInput(vtkImporter->GetOutput());
>
>   zImagePlaneWidget->SetPlaneOrientationToZAxes();
>
>   zImagePlaneWidget->SetSliceIndex(size[0]/2);
>
>   zImagePlaneWidget->SetPicker(picker);
>
>   zImagePlaneWidget->RestrictPlaneToVolumeOn();
>
>   zImagePlaneWidget->SetKeyPressActivationValue('y');
>
>   zImagePlaneWidget->GetPlaneProperty()->SetColor(1, 0, 0);
>
>   zImagePlaneWidget->SetTexturePlaneProperty(ipwProp);
>
>   zImagePlaneWidget->SetResliceInterpolateToNearestNeighbour();
>
>
>
>   zImagePlaneWidget->SetInteractor( iren );
>
> zImagePlaneWidget->On();
>
>
>
> Thanks very much.
>
>
>
> Best regards,
>
> Yang
>
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