- _ptsA = vtkPoints::New();
- _ptsA->SetNumberOfPoints(2);
- _ptsA->SetPoint(0, -1000 , -1000 , -1000 );
- _ptsA->SetPoint(1, 1000 , 1000 , 1000 );
- vtkCellArray *linesA;
- linesA = vtkCellArray::New();
- linesA->InsertNextCell(2);
- linesA->InsertCellPoint(0);
- linesA->InsertCellPoint(1);
- _pdA = vtkPolyData::New();
- _pdA->SetPoints( _ptsA );
- _pdA->SetLines( linesA );
- linesA->Delete(); //do not delete lines ??
- _lineAActor = vtkActor::New();
- _lineAMapper = vtkPolyDataMapper::New();
- _lineAMapper->SetInput(_pdA);
- _lineAMapper->ImmediateModeRenderingOn();
- _lineAActor->SetMapper(_lineAMapper);
-// _lineAActor->GetProperty()->BackfaceCullingOn();
- _lineAActor->GetProperty()->SetDiffuseColor(1,0,0);
- _lineAActor->GetProperty()->SetLineWidth(2);
- _imageViewer2XYZ->GetVtkImageViewer2()->GetRenderer()->AddActor( _lineAActor );
+ if(_lineAActor==NULL){
+ _ptsA = vtkPoints::New();
+ _ptsA->SetNumberOfPoints(2);
+ _ptsA->SetPoint(0, -1000 , -1000 , -1000 );
+ _ptsA->SetPoint(1, 1000 , 1000 , 1000 );
+ vtkCellArray *linesA;
+ linesA = vtkCellArray::New();
+ linesA->InsertNextCell(2);
+ linesA->InsertCellPoint(0);
+ linesA->InsertCellPoint(1);
+ _pdA = vtkPolyData::New();
+ _pdA->SetPoints( _ptsA );
+ _pdA->SetLines( linesA );
+ linesA->Delete(); //do not delete lines ??
+ _lineAActor = vtkActor::New();
+ _lineAMapper = vtkPolyDataMapper::New();
+
+ _lineAMapper->SetInput(_pdA);
+ _lineAMapper->ImmediateModeRenderingOn();
+ _lineAActor->SetMapper(_lineAMapper);
+ // _lineAActor->GetProperty()->BackfaceCullingOn();
+ _lineAActor->GetProperty()->SetDiffuseColor(1,0,0);
+ _lineAActor->GetProperty()->SetLineWidth(2);
+ _imageViewer2XYZ->GetVtkImageViewer2()->GetRenderer()->AddActor( _lineAActor );
+ }
+
+
+