<div dir="ltr"><div style="text-align:left">Hi every one</div><div style="text-align:left"><br></div><div style="text-align:left">I am visualizing some surface integral equation solution in VTK using unstructured grid.</div>
<div style="text-align:left">The color/scalars are associated with points but since I  do not want</div><div style="text-align:left">to have any averaging between adjacent polygons I assign duplicate points ( and scalars ) </div>
<div style="text-align:left">in my unstructured grid. Despite that, I see clear averaging between the scalars near the</div><div style="text-align:left">common edges. How can I stop that ???</div><div style="text-align:left">
Attached is the simplified code</div><div style="text-align:left"><br></div><div style="text-align:left">Thanks in advance</div><div style="text-align:left"><br></div><div style="text-align:left"><div><br></div><div><br></div>
<div>void arrayIEFFT::arrayIEFFT::visFaces(vtkUnstructuredGrid* faceGrid, vtkPoints* facePoints)</div><div>{</div><div>  pointMap myPointMap;  </div><div>  myPointMap.clear();  </div><div>  </div><div>  std::vector<myReal> visScalarsTmp;</div>
<div>  std::vector<char> visScalarsTmpCounter;</div><div>  VTK_CREATE(vtkDoubleArray, visScalars) ;// This shall contain the scalar data</div><div>  visScalars->SetName("_visScalars") ;</div><div>  visScalars->SetNumberOfComponents(1);</div>
<div><br></div><div><br></div><div>  VTK_CREATE(vtkDoubleArray, visVector) ;// This shall contain the vector field plot data</div><div>  visVector->SetNumberOfComponents(3) ;</div><div>  visVector->SetName("_visVector");</div>
<div>  </div><div>  </div><div>  int faceGridPointCounter = 0;</div><div>  VTK_CREATE(vtkIdList, facePointIds);</div><div>  facePointIds->Allocate(9);</div><div>  facePointIds->SetNumberOfIds(9);</div><div>  .</div>
<div>  .</div><div>  .</div><div>  .</div><div>  </div><div>  faceGrid->SetPoints(facePoints);</div><div>  faceGrid->GetPointData()->SetScalars(visScalars);</div><div>  faceGrid->GetPointData()->AddArray(visVector) ;</div>
<div>  </div><div>  std::cout << "\nTotal number of visulization nodess: " <<  faceGrid->GetNumberOfPoints();</div><div>  std::cout << "\nTotal number of visulized cells: " <<  cellCount;</div>
<div>  std::cout.flush();  </div><div>}</div><div><br></div><div>void arrayIEFFT::arrayIEFFT::visualize()</div><div>{</div><div>    VTK_CREATE(vtkUnstructuredGrid, faceGrid);</div><div>    VTK_CREATE(vtkPoints, facePoints);</div>
<div><br></div><div>    visFaces(vtkUnstructuredGrid* faceGrid, vtkPoints* facePoints)</div><div><br></div><div>    VTK_CREATE(vtkDataSetMapper,faceMapper);</div><div>    faceMapper->SetInput(faceGrid);</div><div>    faceMapper->SetScalarVisibility(1);</div>
<div><br></div><div><br></div><div>    vtkActor *faceActor = vtkActor::New();</div><div>    faceActor->SetMapper( faceMapper );</div><div>    faceActor->GetProperty()->SetOpacity(1.);</div><div><br></div><div>    vtkRenderer *rederer= vtkRenderer::New();</div>
<div>    rederer->AddActor( faceActor );</div><div>  </div><div>    vtkCamera* cam = rederer->GetActiveCamera();</div><div>    cam->SetPosition(myConf.cameraPosition[0], myConf.cameraPosition[1], myConf.cameraPosition[2]);</div>
<div>    cam->SetFocalPoint(myConf.camFocalX,myConf.camFocalY,myConf.camFocalZ);</div><div><br></div><div>    vtkRenderWindow *renWin = vtkRenderWindow::New();</div><div>    renWin->AddRenderer( rederer );</div><div>
    renWin->SetSize( myConf.winX, myConf.winY );</div><div>    //renWin->SetOffScreenRendering(1.);    </div><div>    renWin->SetWindowName(strm.c_str());</div><div>    vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();</div>
<div>    renWin->Start();</div><div>    renWin->Render();</div><div>}</div><div><br></div></div><div style="text-align:left"><br></div><div style="text-align:left"><br></div><div style="text-align:left"><br></div>
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