[vtkusers] Rendering more than one actor problem

[ZACK]

Hi Ken Martin,

Thank you for your advice. I did look at new vtk example and I did not see
that I am doing something wrong! My project is still working fine under
vtk5.4 but not with the latest vtk version. Please take a look at the code
below and let me know if you notice something wrong. Please note that that I
have two actors, if I add only one actor to the viewprop it works fine but
not both at the same time.!!

Here's the code that is working on previous 5.0 vtk version 

      //rendering
         m_prenderer = vtkopenglrenderer::New();
        m_prenWin = vtkWin32OpenGLRenderWindow::New();

         //I use append filter class to add all unstructured grids data
         m_pUnstructuredGridModel = vtkAppendFiter::New();

        //...addding data

        vtkSmartPointer<vtkGeometryFilter> extract = 
vtkSmartPointer<vtkGeometryFilter>::New(); 
       
extract->SetInputConnection(m_pUnstructuredGridModel->GetOutputPort()); 
        extract->Modified(); 

//creating mapper
        InitializePolyDataMapper(m_pModelPolyDataMapper); 
        
m_pModelPolyDataMapper->SetInputConnection(extract->GetOutputPort()); 
        PreparePolyDataMapper(m_pModelPolyDataMapper, pColours, 
m_CurrentMinValue,                                                                                              
m_CurrentMaxValue); 

//creating actor
     m_pCurrentFringeActor = vtkActor::New();
        m_pCurrentFringeActor->SetMapper(m_pModelPolyDataMapper); 
        m_pCurrentFringeActor->SetDragable(true); 
       m_pCurrentFringeActor->VisibilityOn(); 
        m_prenderer->AddViewProp(m_pCurrentFringeActor);// m_prenderer is 
vtkopenglrenderer 

*The piece of code above does render fine, but when I try to add the code 
below for wireframe the render windows becomes empty *

        vtkSmartPointer<vtkFeatureEdges> edges_extractor = 
vtkSmartPointer<vtkFeatureEdges>::New(); 
        edges_extractor->SetInputConnection(extract->GetOutputPort()); 
        edges_extractor->ColoringOff(); 
        edges_extractor->BoundaryEdgesOn(); 
        edges_extractor->ManifoldEdgesOn(); 
        edges_extractor->NonManifoldEdgesOn(); 
        edges_extractor->FeatureEdgesOn(); 
        edges_extractor->Modified(); 

        vtkSmartPointer<vtkPolyDataMapper> edges_mapper = 
 vtkSmartPointer<vtkPolyDataMapper>::New(); 

        edges_mapper->SetInputConnection(edges_extractor->GetOutputPort()); 
        edges_mapper->SetResolveCoincidentTopologyPolygonOffsetParameters(1,
1); 
        edges_mapper->SetResolveCoincidentTopologyToPolygonOffset(); 
        edges_mapper->ScalarVisibilityOff(); // coloring edges 

        edges_mapper->Modified(); 

        vtkActor*  edges_actor = vtkActor::New(); 
        edges_actor->SetMapper(edges_mapper); 
        edges_actor->GetProperty()->SetDiffuseColor(0, 0, 0); 
        edges_actor->GetProperty()->SetLineWidth(m_iEdgeLineWidth); 
        edges_actor->Modified(); 
       edges_actor->VisibilityOn(); 

      //rendering
        m_prenderer->AddViewProp(edges_actor);
        m_prenWin->Render

*Note: If I render the wireframe actor (edges_actor) by itself it does work 
fine *

Thanks 



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