[Insight-users] Problem in obtaining world position with vtkSeedWidget

[Xiaopeng Yang]

The problem is still there. I am very confused why just pos[3] is not correct. If anyone of you have experienced the similar problem, please share your idea with me. I would appreciate a lot!

 

Thanks

 

发件人: insight-users-bounces at itk.org [mailto:insight-users-bounces at itk.org] 代表 Xiaopeng Yang
发送时间: 2011년 1월 11일 화요일 오후 6:44
收件人: 'vtk'; insight-users at itk.org
主题: [Insight-users] Problem in obtaining world position with vtkSeedWidget

 

Dear Users,

 

I am trying to get world position by SeedRepresentation->GetSeedWorldPosition(I, pos). But comparing with other software, I got the wrong value in z coordinate. The values of x and y coordinates are correct. I would appreciate if anyone can point me in the right direction. 

 

Thanks,

Yang

 

class vtkSeedCallback : public vtkCommand

{

  public:

    static vtkSeedCallback *New()

    { 

      return new vtkSeedCallback; 

    }

 

    vtkSeedCallback() {}

 

    virtual void Execute(vtkObject*, unsigned long event, void *calldata)

    {

      if(event == vtkCommand::PlacePointEvent)

      {

        std::cout << "Point placed, total of: " 

            << this->SeedRepresentation->GetNumberOfSeeds() << std::endl;

      }

      if(event == vtkCommand::InteractionEvent)

      {

        if(calldata)

        {

          std::cout << "Interacting with seed : " 

              << *(static_cast< int * >(calldata)) << std::endl;

        }

      }

  

      std::cout << "List of seeds (Display coordinates):" << std::endl;

         

      for(vtkIdType i = 0; i < this->SeedRepresentation->GetNumberOfSeeds(); i++)

        {

        double pos[3];

        this->SeedRepresentation->GetSeedWorldPosition(i, pos);

        std::cout << "(" << pos[0] << " " << pos[1] << " " << pos[2] << ")" << std::endl;

        }

              

     }

       

 

    void SetRepresentation(vtkSmartPointer<vtkSeedRepresentation> rep) {this->SeedRepresentation = rep;}

    private:

    vtkSmartPointer<vtkSeedRepresentation> SeedRepresentation;

};

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