<div dir="ltr">Hi Maximilian,<div><br></div><div>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.</div><div><br></div><div> - David<br><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jul 19, 2016 at 4:38 AM, Maximilian Wormser <span dir="ltr"><<a href="mailto:max.wormser@gmx.de" target="_blank">max.wormser@gmx.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="DE" link="#0563C1" vlink="#954F72"><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:#1f497d">Good idea, but SetCappingOff or SetCappingOn do not change the underlying problem.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><b><span style="font-size:11.0pt">Von:</span></b><span 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<u></u><u></u></span></p><div><div class="h5"><p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p><div><p class="MsoNormal" style="margin-left:35.4pt">maybe you should set "capping off"<span style="font-size:12.0pt"><u></u><u></u></span></p></div><div><p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p></div><div><p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p></div><div><p class="MsoNormal" style="margin-left:35.4pt"><u></u> <u></u></p></div><div><p class="MsoNormal" style="margin-left:35.4pt"><span style="font-family:"Microsoft JhengHei",sans-serif">发自我的小米手机</span><u></u><u></u></p></div><div><p class="MsoNormal" style="margin-left:35.4pt"><span style="font-family:"MS Gothic"">在</span> Maximilian Wormser <<a href="mailto:max.wormser@gmx.de" target="_blank">max.wormser@gmx.de</a>><span style="font-family:"MS Gothic"">，</span>2016<span style="font-family:"MS Gothic"">年</span>7<span style="font-family:"MS Gothic"">月</span>19<span style="font-family:"MS Gothic"">日</span> <span style="font-family:"MS Gothic"">下午</span>3:51<span style="font-family:"MS Gothic"">写道：</span><u></u><u></u></p><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm"><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-size:11.0pt">Hey all,</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-size:11.0pt"> </span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" 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 style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-size:11.0pt"> </span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-size:11.0pt">Here’s a minimal working example to reproduce the behavior:</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-size:11.0pt"> </span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">import vtk</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New""> </span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New""> </span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">def rendering(mapper):</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">    """Takes mapper and handles the rendering."""</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">    actor = vtk.vtkActor()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">    actor.SetMapper(mapper)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New""> </span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">    # Create a renderer, render window, and interactor</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">    </span><span style="font-family:"Courier New"">renderer = vtk.vtkRenderer()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span style="font-family:"Courier New"">    renderWindow = vtk.vtkRenderWindow()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span style="font-family:"Courier New"">    </span><span lang="EN-US" style="font-family:"Courier New"">renderWindow.AddRenderer(renderer)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">    renderWindowInteractor = vtk.vtkRenderWindowInteractor()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">    renderWindowInteractor.SetRenderWindow(renderWindow)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">    # Add the actors to the scene</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">    renderer.AddActor(actor)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">    # Render and interact</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">    renderWindow.Render()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">    renderWindowInteractor.Start()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">    return</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New""> </span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">pts = vtk.vtkPoints()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">pts.SetNumberOfPoints(4)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">pts.SetPoint(0, 0.5, 0, 0)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">pts.SetPoint(1, 1, 0.5, 0)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span style="font-family:"Courier New"">pts.SetPoint(2, 0.5, 1, 0)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">pts.SetPoint(3, 0, 0.5, 0)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New""> </span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">lines = vtk.vtkCellArray()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">lines.InsertNextCell(5)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">lines.InsertCellPoint(0)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">lines.InsertCellPoint(1)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">lines.InsertCellPoint(2)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">lines.InsertCellPoint(3)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">lines.InsertCellPoint(0)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New""> </span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">poly = vtk.vtkPolyData()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">poly.SetPoints(pts)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">poly.SetLines(lines)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New""> </span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">tubes = vtk.vtkTubeFilter()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">tubes.SetInputData(poly)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">tubes.CappingOn()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">tubes.SidesShareVerticesOff()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">tubes.SetNumberOfSides(4)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">tubes.SetRadius(0.1)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">tubes.Update()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New""> </span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">mapper = vtk.vtkPolyDataMapper()</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">mapper.SetInputData(tubes.GetOutput())</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">rendering(mapper)</span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New""> </span><span style="font-size:11.0pt"><u></u><u></u></span></p><p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="font-family:"Courier New"">Thanks in advance for any help!</span></p></blockquote></div></div></div></div></blockquote></div></div></div></div>