[vtkusers] Default initial plane when using vtkPlaneWidget?

[Xiaopeng Yang]

Dear All,

 

How are you doing?

When using vtkPlaneWidget, no matter how I define the plane, the initial
plan of the vtkPlaneWidget does not change at all. I used three points to
generate the plane and change the plane by changing the locations of the
three points. Here is my code:

 

class vtkTIPWCallback : public vtkCommand

{

public:

  static vtkTIPWCallback *New() 

    { return new vtkTIPWCallback; }

  virtual void Execute(vtkObject *caller, unsigned long, void*)

    {

      //vtkImplicitPlaneWidget *planeWidget = 

      //  reinterpret_cast<vtkImplicitPlaneWidget*>(caller);

         vtkPlaneWidget *planeWidget = 

        reinterpret_cast<vtkPlaneWidget*>(caller);

      planeWidget->GetPlane(this->Plane);

      }

}

 

int main (int argc, char *argv[])

{

         vtkPlane *plane = vtkPlane::New();

 

         double n[3];

 

         double p1[3] = {-27.929, -136.901, 821.344};

         double p2[3] = {-86.1809, -166.647, 777.784};

         double p3[3] = {-117.166, -183.999, 733.234};

         vtkTriangle::ComputeNormal(p1,p2,p3,n);

 

         plane->SetNormal(n[0],n[1],n[2]); 

        

         plane->SetOrigin(p1[0], p1[1], p1[2]);

 

         vtkTIPWCallback *myCallback = vtkTIPWCallback::New();

         myCallback->Plane = plane;

         myCallback->Actor = selectActor;

 

         vtkPlaneWidget *planeWidget = vtkPlaneWidget::New();

         planeWidget->SetInteractor(iren_SP);

         planeWidget->SetPlaceFactor(1.0);

         planeWidget->SetHandleSize(0.01);

         

         planeWidget->SetInput(iso_Liver->GetOutput());

         planeWidget->PlaceWidget();

         planeWidget->SetRepresentationToSurface();

         planeWidget->GetPlaneProperty()->SetColor(0.4,0.8,0.9);

         planeWidget->GetPlaneProperty()->SetOpacity(0.5);

         planeWidget->GetPlane(plane);

       

         planeWidget->AddObserver(vtkCommand::InteractionEvent,myCallback);

         

         .

}

 

Thank you very much,

Xiaopeng

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