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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">If start and end points of the tube are the same then
<a href="http://www.vtk.org/doc/nightly/html/classvtkCleanPolyData.html">http://www.vtk.org/doc/nightly/html/classvtkCleanPolyData.html</a> will merge them.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Andras<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> vtkusers [mailto:vtkusers-bounces@vtk.org]
<b>On Behalf Of </b>Maximilian Wormser<br>
<b>Sent:</b> July 19, 2016 9:09<br>
<b>To:</b> 'David Gobbi' <david.gobbi@gmail.com><br>
<b>Cc:</b> 'VTK Users' <vtkusers@vtk.org><br>
<b>Subject:</b> Re: [vtkusers] vtkTubeFilter doesn't create a closed loop<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Oh what a shame :( do you know where the best place is to submit this as a feature request?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><b><span lang="DE" style="font-size:11.0pt;font-family:"Calibri",sans-serif">Von:</span></b><span lang="DE" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> David Gobbi [<a href="mailto:david.gobbi@gmail.com">mailto:david.gobbi@gmail.com</a>]
<br>
<b>Gesendet:</b> Dienstag, 19. Juli 2016 14:58<br>
<b>An:</b> Maximilian Wormser <<a href="mailto:max.wormser@gmx.de">max.wormser@gmx.de</a>><br>
<b>Cc:</b> VTK Users <<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>><br>
<b>Betreff:</b> Re: [vtkusers] vtkTubeFilter doesn't create a closed loop<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="DE"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><span lang="DE">Hi Maximilian,<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><span lang="DE"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><span lang="DE">I did a quick read-through of the code for vtkTubeFilter, and it doesn't check to see if the first and last points are the same point. So unless someone provides a fix, you might be out of luck.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><span lang="DE"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><span lang="DE"> - David<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><span lang="DE"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><span lang="DE">On Tue, Jul 19, 2016 at 4:38 AM, Maximilian Wormser <<a href="mailto:max.wormser@gmx.de" target="_blank">max.wormser@gmx.de</a>> wrote:<o:p></o:p></span></p>
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<span style="font-size:11.0pt;color:#1F497D">Good idea, but SetCappingOff or SetCappingOn do not change the underlying problem.</span><span lang="DE"><o:p></o:p></span></p>
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<span style="font-size:11.0pt;color:#1F497D"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<b><span lang="DE" style="font-size:11.0pt">Von:</span></b><span lang="DE" style="font-size:11.0pt"> lihouxing [mailto:<a href="mailto:lihouxing@yeah.net" target="_blank">lihouxing@yeah.net</a>]
<br>
<b>Gesendet:</b> Dienstag, 19. Juli 2016 11:02<br>
<b>An:</b> <a href="mailto:max.wormser@gmx.de" target="_blank">max.wormser@gmx.de</a>;
<a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a><br>
<b>Betreff:</b> Re:[vtkusers] vtkTubeFilter doesn't create a closed loop</span><span lang="DE"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span lang="DE"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span lang="DE">maybe you should set "capping off"<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span lang="DE"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span lang="DE"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span lang="DE"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Microsoft JhengHei",sans-serif">发自我的小米手机</span><span lang="DE"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"MS Gothic"">在</span><span lang="DE"> Maximilian Wormser <<a href="mailto:max.wormser@gmx.de" target="_blank">max.wormser@gmx.de</a>></span><span style="font-family:"MS Gothic"">，</span><span lang="DE">2016</span><span style="font-family:"MS Gothic"">年</span><span lang="DE">7</span><span style="font-family:"MS Gothic"">月</span><span lang="DE">19</span><span style="font-family:"MS Gothic"">日</span>
<span style="font-family:"MS Gothic"">下午</span><span lang="DE">3:51</span><span style="font-family:"MS Gothic"">写道：</span><span lang="DE"><o:p></o:p></span></p>
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<span style="font-size:11.0pt">Hey all,</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-size:11.0pt"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-size:11.0pt">I want to create closed loops with vtkTubeFilter, but at the point where the first and the last point meet there is always a misconnection. vtkStripper and vtkCleanPolyData do not help in this case. I already posted my problem
to stackoverflow, but without any solutions so far. Here is a link to my submission:
<a href="http://stackoverflow.com/questions/38266711/creating-a-closed-loop-with-vtktubefilter" target="_blank">
http://stackoverflow.com/questions/38266711/creating-a-closed-loop-with-vtktubefilter</a></span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-size:11.0pt"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-size:11.0pt">Here’s a minimal working example to reproduce the behavior:</span><span lang="DE"><o:p></o:p></span></p>
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<span style="font-size:11.0pt"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">import vtk</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">def rendering(mapper):</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> """Takes mapper and handles the rendering."""</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> actor = vtk.vtkActor()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> actor.SetMapper(mapper)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> # Create a renderer, render window, and interactor</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> </span><span lang="DE" style="font-family:"Courier New"">renderer = vtk.vtkRenderer()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span lang="DE" style="font-family:"Courier New""> renderWindow = vtk.vtkRenderWindow()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span lang="DE" style="font-family:"Courier New""> </span><span style="font-family:"Courier New"">renderWindow.AddRenderer(renderer)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> renderWindowInteractor = vtk.vtkRenderWindowInteractor()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> renderWindowInteractor.SetRenderWindow(renderWindow)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> # Add the actors to the scene</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> renderer.AddActor(actor)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> # Render and interact</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> renderWindow.Render()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> renderWindowInteractor.Start()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> return</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">pts = vtk.vtkPoints()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">pts.SetNumberOfPoints(4)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">pts.SetPoint(0, 0.5, 0, 0)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">pts.SetPoint(1, 1, 0.5, 0)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span lang="DE" style="font-family:"Courier New"">pts.SetPoint(2, 0.5, 1, 0)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">pts.SetPoint(3, 0, 0.5, 0)</span><span lang="DE"><o:p></o:p></span></p>
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<span style="font-family:"Courier New""> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">lines = vtk.vtkCellArray()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">lines.InsertNextCell(5)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">lines.InsertCellPoint(0)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">lines.InsertCellPoint(1)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">lines.InsertCellPoint(2)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">lines.InsertCellPoint(3)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">lines.InsertCellPoint(0)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">poly = vtk.vtkPolyData()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">poly.SetPoints(pts)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">poly.SetLines(lines)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">tubes = vtk.vtkTubeFilter()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">tubes.SetInputData(poly)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">tubes.CappingOn()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">tubes.SidesShareVerticesOff()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">tubes.SetNumberOfSides(4)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">tubes.SetRadius(0.1)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">tubes.Update()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">mapper = vtk.vtkPolyDataMapper()</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">mapper.SetInputData(tubes.GetOutput())</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">rendering(mapper)</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New""> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New"">Thanks in advance for any help!</span><span lang="DE"><o:p></o:p></span></p>
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