<div dir="ltr"><div>Hi Fernando,</div><div>I am not sure what is going on.</div>I would save VTK datasets at points in your pipeline to narrow down where the problem is. For instance, save the datasets after the passarray filter.<div>Also save the datasets before and after your append filter that produces the wrong result.</div><div>You can load those datasets in paraview and to see exactly what you get after each filter.</div><div><br></div><div>I use the following function in Python. You'll need to convert this to C++.</div><div><br></div><div><div>def debugWriteGrid(grid, name):</div><div> writer = vtk.vtkXMLDataSetWriter()</div><div> gridType = grid.GetDataObjectType()</div><div> if (gridType == vtk.VTK_STRUCTURED_GRID):</div><div> ext = ".vts"</div><div> elif (gridType == vtk.VTK_UNSTRUCTURED_GRID):</div><div> ext = ".vtu"</div><div> elif (gridType == vtk.VTK_POLY_DATA):</div><div> ext = ".vtp"</div><div> else:</div><div> print "Unknown grid type: %d" % gridType</div><div> ext = ".vtk"</div><div> writer.SetFileName(name + ext)</div><div> writer.SetInputData(grid)</div><div> writer.Write()</div></div><div><br></div><div><div><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Oct 27, 2016 at 4:38 AM, Fernando Nellmeldin <span dir="ltr"><<a href="mailto:f.nellmeldin@open-engineering.com" target="_blank">f.nellmeldin@open-engineering.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello, I am still having problems.... <div>I added the casting as you suggested:<div><br></div><div>-----<br><div><span class=""><div style="font-size:12.8px">// given that model is first an UnstructuredGrid1 and then UnstructuredGridFull</div></span><div style="font-size:12.8px"><span class=""><div>vtkSmartPointer<vtkPassArrays> passArrays = vtkSmartPointer<vtkPassArrays><wbr>::New();</div><div>passArrays->SetInput(model); </div><div>passArrays->UseFieldTypesOn(); // restrict to only pass what I say</div><div>passArrays->AddFieldType(vtkDa<wbr>taObject::POINT); <br></div><div>passArrays->AddArray(fieldType<wbr>, "nameOfArray");</div><div>passArrays->Update();</div><div><br></div></span><div>// modelForFilter is a vtkUnstructuredGrid</div><div>modelForFilter = vtkUnstructuredGrid::<wbr>SafeDownCast(passArrays-><wbr>GetOutput()); // cast to UnstructuredGrid</div><div>modelForFilter->GetPointData()<wbr>->SetActiveVectors("<wbr>nameOfArray"); // set the active vectors in the new data</div><div>modelForFilter->Update();</div></div><span class=""><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">//warping vector is a vtkWarpVector</div></span><div style="font-size:12.8px">warpingVector->SetInputConnect<wbr>ion(modelForFilter-><wbr>GetProducerPort());</div><span class=""><div style="font-size:12.8px">warpingVector->SetInputArrayTo<wbr>Process(0, 0, 0, vtkDataObject::FIELD_ASSOCI<wbr>ATION_POINTS, "nameOfArray");</div></span><span class=""><div style="font-size:12.8px">// the rest of the pipeline is the same...</div></span></div></div><div style="font-size:12.8px"><span style="font-size:12.8px">-----</span><br></div><div style="font-size:12.8px">The result is the same. I put some modelForFilter->Print(std::<wbr>cout) and I can see that the selected array is indeed the active vectors... </div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">Other thing I tried:</div><div style="font-size:12.8px">modelForFilter->DeepCopy(<wbr>model); // full copy the model to the new </div><div style="font-size:12.8px"><span style="font-size:12.8px">modelForFilter->GetPointData()<wbr>->SetActiveVectors("<wbr>nameOfArray"); // set the active in the new</span><br></div><div style="font-size:12.8px"><span style="font-size:12.8px">modelForFilter->Update();</span></div><div style="font-size:12.8px"><span style="font-size:12.8px">Still, same result.</span></div><div style="font-size:12.8px"><span style="font-size:12.8px"><br></span></div><div style="font-size:12.8px"><span style="font-size:12.8px">The only thing that works is:</span></div><div style="font-size:12.8px"><span style="font-size:12.8px">modelForFilter = model;</span></div><div style="font-size:12.8px"><span style="font-size:12.8px">But of course, here I only copy the vtkSmartPointer and not the data, so this is the thing I want to avoid.</span></div></div><div style="font-size:12.8px"><span style="font-size:12.8px"><br></span></div><div style="font-size:12.8px"><span style="font-size:12.8px">Any ideas? </span></div><div style="font-size:12.8px">Thank you!</div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On 26 October 2016 at 16:54, Dan Lipsa <span dir="ltr"><<a href="mailto:dan.lipsa@kitware.com" target="_blank">dan.lipsa@kitware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Can you cast the data object to an unstructured grid and then set the active vector on it? Make sure you call update before you do that.<span class="m_-6533648447065285928HOEnZb"><font color="#888888"><div><br></div><div>Dan</div><div><br></div></font></span></div><div class="m_-6533648447065285928HOEnZb"><div class="m_-6533648447065285928h5"><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Oct 26, 2016 at 10:44 AM, Fernando Nellmeldin <span dir="ltr"><<a href="mailto:f.nellmeldin@open-engineering.com" target="_blank">f.nellmeldin@open-engineering<wbr>.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello and thank you for your reply!<div><br><div>After your suggestion, I tried using vtkPassArray, but I can't find how to set the Active Vectors. The output is a vtkDataObject*, which of course doesn't have the PointsData and therefore no setActiveVectors.</div><div>The result is the same as before, when I change the input to Full, I see the wrong deformed mesh.</div><div><br></div><div>This is my modified code:</div><div><br></div><div>// given that model is first an UnstructuredGrid1 and then UnstructuredGridFull</div><div><div>vtkSmartPointer<vtkPassArrays> passArrays = vtkSmartPointer<vtkPassArrays><wbr>::New();</div><div>passArrays->SetInput(model); </div><div>passArrays->UseFieldTypesOn(); // restrict to only pass what I say</div><div>passArrays->AddFieldType(vtkDa<wbr>taObject::POINT); <br></div><div>passArrays->AddArray(fieldType<wbr>, "nameOfArray");</div><div>passArrays->Update();</div></div><div><br></div><div>//warping vector is a vtkWarpVector</div><div>warpingVector->SetInputConnect<wbr>ion(passArrays->GetProducerPor<wbr>t());</div><div>warpingVector->SetInputArrayTo<wbr>Process(0, 0, 0, vtkDataObject::FIELD_ASSOCI<wbr>ATION_POINTS, "nameOfArray"); // I don't know why this line is needed to see something</div><div>// the rest of the pipeline is the same...</div><div><br></div><div>Am I missing something?<br></div><div><br></div><div>Thank you.</div><div><br></div><div><br></div></div></div><div class="m_-6533648447065285928m_6358112856424925610HOEnZb"><div class="m_-6533648447065285928m_6358112856424925610h5"><div class="gmail_extra"><br><div class="gmail_quote">On 26 October 2016 at 15:40, Dan Lipsa <span dir="ltr"><<a href="mailto:dan.lipsa@kitware.com" target="_blank">dan.lipsa@kitware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Fernando,<div>Can you try vtkPassArray to pass the proper vector array to each of your pipelines? Then you can set the active vector on the output of this algorithm.</div><div><br></div><div>Dan</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="m_-6533648447065285928m_6358112856424925610m_8045613482271177067h5">On Wed, Oct 26, 2016 at 6:23 AM, Fernando Nellmeldin <span dir="ltr"><<a href="mailto:f.nellmeldin@open-engineering.com" target="_blank">f.nellmeldin@open-engineering<wbr>.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="m_-6533648447065285928m_6358112856424925610m_8045613482271177067h5"><div dir="ltr">Hello.<div>I would like to show the deformed mesh of a model based on the values of a point data array of dimension 3 (vectorial data).</div><div><br><div>I have the following pipeline:</div><div>UnstructuredGrid1 -> WarpVector -> GeometryFilter -> ExtractEdges -> PolyDataMapper -> Actor<br clear="all"><div>In the WarpVector, I call to say which array to use</div><div>WarpVector->SetInputArrayToPro<wbr>cess(0,0,0, FIELD_ASSOCIATION_POINTS,"name<wbr>OfArray");</div><div><br></div><div>The first time I load the actor in screen, everything is OK.</div><div><br></div><div>Later, I would like to mirror the input UnstructuredGrid1 because it represents half the model. So I do the following:</div><div>UnstructuredGrid1 -> ReflectionFilter -> UnstructuredGrid2</div><div>{UnstructuredGrid1, UnstructuredGrid2} -> AppendFilter -> UnstructuredGridFull</div><div><br></div><div>Then, I replace the input of WarpVector by UnstructuredGridFull, and I reload the actor. </div><div>However, what I see on screen is the same deformed mesh than before, plus another deformed mesh that is not its mirror, it's something different and not correct, of course.</div><div><br></div><div>If, however, I call:</div><div>At the beginning: UnstructuredGrid1->GetPointDat<wbr>a()->SetActiveVectors("nameOfA<wbr>rray"); <br>After I did the mirroring: UnstructuredGridFull->GetPoint<wbr>Data()->SetActiveVectors("name<wbr>OfArray"); </div><div>I don't have the problem and everything works OK.</div><div><br></div><div>Problem is, I don't want to call setActiveVectors because I can have more than one pipeline that makes uses of the same UnstructuredGrid with different vectorial data, and I noticed that each call to setActive* will modify all the pipelines that makes use of the Scalars/Vectors/Tensors. So this doesn't seem an option.</div><div><br></div><div>What is the alternative to use here to solve the problem?</div><div><br></div><div>I tried with vtkAssignAttributes but didn't work.</div><div><div>vtkSmartPointer<vtkAssignAttri<wbr>bute> aa = vtkSmartPointer<vtkAssignAttri<wbr>bute>::New();</div><div>aa->SetInput(UnstructuredGridF<wbr>ull);</div><div>aa->Assign("nameOfArray", vtkDataSetAttributes::VECTORS,<wbr>vtkAssignAttribute::POINT_DATA<wbr>);</div><div>aa->Update();</div></div><div><br></div><div>And then:</div><div>AssignAttribute -> WarpVector instead of UnstructuredGridFull -> WarpVector.</div><div>but same result...</div><div><br></div><div>Thank you.</div><div><br></div>-- <br><div class="m_-6533648447065285928m_6358112856424925610m_8045613482271177067m_-2562078329492644039m_-215323534472359152gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><b>Fernando NELLMELDIN</b><br>Software Engineer<div style="font-size:12.8px"><b style="font-size:12.8px"><font color="#cc0000">______________________________<wbr>______________________________<wbr>___</font></b><br></div><div><div style="font-size:12.8px"><b style="font-size:12.8px"><font color="#000000"><br></font></b></div><div style="font-size:12.8px"><b style="font-size:12.8px"><font color="#000000">O</font><font color="#cc0000">pen E</font><font color="#000000">ngineering s.a.</font></b><br></div><div style="font-size:12.8px"><font color="#000000"><br></font></div><div style="font-size:12.8px"><font color="#000000">Rue Bois Saint-Jean 15/1</font></div><div style="font-size:12.8px"><font color="#000000">B-4102 Seraing (Belgium)</font></div><div><font color="#000000" style="font-size:12.8px">Tel: </font><a href="tel:%2B32.4.353.30.34" value="+3243533034" target="_blank">+32.4.353.30.34</a> </div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><a href="http://www.open-engineering.com/" style="color:rgb(17,85,204)" target="_blank">http://www.open-engineering.co<wbr>m</a></div><div style="font-size:12.8px"><a href="https://www.linkedin.com/company/open-engineering?trk=biz-companies-cym" style="color:rgb(17,85,204)" target="_blank">https://www.linkedin.com/compa<wbr>ny/open-engineering?trk=biz-co<wbr>mpanies-cym</a><br></div><div style="font-size:12.8px"><b><font color="#cc0000"><span style="font-family:"arial black",sans-serif;font-size:12.8px">______________________________<wbr>______________________________<wbr>_____________<br></span></font></b></div></div></div></div></div></div></div>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="m_-6533648447065285928m_6358112856424925610m_8045613482271177067gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><b>Fernando NELLMELDIN</b><br>Software Engineer<div style="font-size:12.8px"><b style="font-size:12.8px"><font color="#cc0000">______________________________<wbr>______________________________<wbr>___</font></b><br></div><div><div style="font-size:12.8px"><b style="font-size:12.8px"><font color="#000000"><br></font></b></div><div style="font-size:12.8px"><b style="font-size:12.8px"><font color="#000000">O</font><font color="#cc0000">pen E</font><font color="#000000">ngineering s.a.</font></b><br></div><div style="font-size:12.8px"><font color="#000000"><br></font></div><div style="font-size:12.8px"><font color="#000000">Rue Bois Saint-Jean 15/1</font></div><div style="font-size:12.8px"><font color="#000000">B-4102 Seraing (Belgium)</font></div><div><font color="#000000" style="font-size:12.8px">Tel: </font><a href="tel:%2B32.4.353.30.34" value="+3243533034" target="_blank">+32.4.353.30.34</a> </div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><a href="http://www.open-engineering.com/" style="color:rgb(17,85,204)" target="_blank">http://www.open-engineering.co<wbr>m</a></div><div style="font-size:12.8px"><a href="https://www.linkedin.com/company/open-engineering?trk=biz-companies-cym" style="color:rgb(17,85,204)" target="_blank">https://www.linkedin.com/compa<wbr>ny/open-engineering?trk=biz-co<wbr>mpanies-cym</a><br></div><div style="font-size:12.8px"><b><font color="#cc0000"><span style="font-family:'arial black',sans-serif;font-size:12.8px">______________________________<wbr>______________________________<wbr>_____________<br></span></font></b></div></div></div></div></div></div></div>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="m_-6533648447065285928gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><b>Fernando NELLMELDIN</b><br>Software Engineer<div style="font-size:12.8px"><b style="font-size:12.8px"><font color="#cc0000">______________________________<wbr>______________________________<wbr>___</font></b><br></div><div><div style="font-size:12.8px"><b style="font-size:12.8px"><font color="#000000"><br></font></b></div><div style="font-size:12.8px"><b style="font-size:12.8px"><font color="#000000">O</font><font color="#cc0000">pen E</font><font color="#000000">ngineering s.a.</font></b><br></div><div style="font-size:12.8px"><font color="#000000"><br></font></div><div style="font-size:12.8px"><font color="#000000">Rue Bois Saint-Jean 15/1</font></div><div style="font-size:12.8px"><font color="#000000">B-4102 Seraing (Belgium)</font></div><div><font color="#000000" style="font-size:12.8px">Tel: </font><a href="tel:%2B32.4.353.30.34" value="+3243533034" target="_blank">+32.4.353.30.34</a> </div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><a href="http://www.open-engineering.com/" style="color:rgb(17,85,204)" target="_blank">http://www.open-engineering.<wbr>com</a></div><div style="font-size:12.8px"><a href="https://www.linkedin.com/company/open-engineering?trk=biz-companies-cym" style="color:rgb(17,85,204)" target="_blank">https://www.linkedin.com/<wbr>company/open-engineering?trk=<wbr>biz-companies-cym</a><br></div><div style="font-size:12.8px"><b><font color="#cc0000"><span style="font-family:'arial black',sans-serif;font-size:12.8px">______________________________<wbr>______________________________<wbr>_____________<br></span></font></b></div></div></div></div></div></div></div>
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