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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">You may use vtkPointSet to achieve most of your needs<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">>></span><span lang="EN-US" style="font-size:11.0pt;
font-family:"Calibri","sans-serif""> able to add individual points at random<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">vtkPointSet::</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><a href="file:///E:\DOCUMENTATION\TK\VTK\vtkDocHtml-5.8.0\html\a01526.html#f8a9a39d0ff4c56454be8d35a42b7f34"><span lang="EN-US">GetPoints</span></a></span><span lang="EN-US" style="font-size:11.0pt;
font-family:"Calibri","sans-serif"">()</span><span lang="EN-US" style="font-size:
11.0pt;font-family:"Calibri","sans-serif"">::InsertNextPoint()</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">
and call for each point you want to add.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Also, you may
</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">call<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">vtkPointSet::</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">
</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><a href="file:///E:\DOCUMENTATION\TK\VTK\vtkDocHtml-5.8.0\html\a01526.html#f8a9a39d0ff4c56454be8d35a42b7f34"><span lang="EN-US">GetPoints</span></a></span><span lang="EN-US" style="font-size:11.0pt;
font-family:"Calibri","sans-serif"">()</span><span lang="EN-US" style="font-size:
11.0pt;font-family:"Calibri","sans-serif"">::SetNumberOfPoints()
to specify the number of points and then set each point using vtkPointSet::GetPoints()::</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><a href="file:///E:\DOCUMENTATION\TK\VTK\vtkDocHtml-5.8.0\html\a01524.html#0ca9c77d1efbeb7dff8d15ec34b19192"><span lang="EN-US">SetPoint()</span></a></span><span lang="EN-US" style="font-size:11.0pt;
font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">>>want it to be able to detect if the point is already contained<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">vtkPointSet::</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><a href="file:///E:\DOCUMENTATION\TK\VTK\vtkDocHtml-5.8.0\html\a01526.html#a752212d5f6334f42dfcfd7d5ba10977"><span lang="EN-US">FindPoint</span></a></span><span lang="EN-US" style="font-size:11.0pt;
font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">-- I need access to the underlying data for an external programme<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">vtkPointSet::</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><a href="file:///E:\DOCUMENTATION\TK\VTK\vtkDocHtml-5.8.0\html\a00485.html#e8406fa1dc144b392ef28111c71a47b0"><span lang="EN-US">GetPoint</span></a></span><span lang="EN-US" style="font-size:11.0pt;
font-family:"Calibri","sans-serif"">s()::GetPoint(</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">pointid</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">)</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""><a href="file:///E:\DOCUMENTATION\TK\VTK\vtkDocHtml-5.8.0\html\a00485.html#e8406fa1dc144b392ef28111c71a47b0"><span style="color:windowtext;text-decoration:none">--Finally,
and most importantly, I want to be able to delete points</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">vtkPointSet::</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><a href="file:///E:\DOCUMENTATION\TK\VTK\vtkDocHtml-5.8.0\html\a00485.html#e8406fa1dc144b392ef28111c71a47b0"><span lang="EN-US">GetPoint</span></a></span><span lang="EN-US" style="font-size:11.0pt;
font-family:"Calibri","sans-serif"">s()::GetData().RemoveTuple(</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">pointid</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">--</span><span lang="EN-US">
</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> So deletion should not re-number the point ids once a point is removed.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I owe you that, unfortunately I think vtkIdType is just an index rather than a key.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
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<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:
"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;
font-family:"Tahoma","sans-serif""> vtkusers-bounces@vtk.org [mailto:vtkusers-bounces@vtk.org]
<b>On Behalf Of </b>Andrew Parker<br>
<b>Sent:</b> miércoles, 13 de noviembre de 2013 8:27<br>
<b>To:</b> vtkusers@vtk.org<br>
<b>Subject:</b> [vtkusers] Point addition and removal data structure<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">All, <o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
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<div>
<p class="MsoNormal">I am looking for a vtk data structure with the following requirements:<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">-- I want to be able to add individual points at random, rather than construct the data structure from a point list. When the point is added I want the id of the point added returned<o:p></o:p></p>
</div>
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<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">-- I want it to be able to detect if the point is already contained, and if so return the id of the contained point, else the newly added id - so strongly enforce no duplication. I would prefer a very tight tolerance for duplicate point
detection.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">-- I need access to the underlying data for an external programme, so I'm hoping that they're stored as x_y_x for point 0 and then x_y_z for point 1 etc. I can live without this, but would prefer access to contiguous underlying storage.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<div>
<p class="MsoNormal">-- Finally, and most importantly, I want to be able to delete points, without it invalidating previously returned id's for other points that remain after deletion. So deletion should not re-number the point ids once a point is removed.
It should also not be an overly costly process to delete, as this is likely to happen just as frequently as addition. I would prefer deletion over contiguous point storage, so if I have to sacrifice one then it would be the above requirement rather than
this one.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<div>
<p class="MsoNormal">I thought I had most of the above with vtkMergePoints, but I don't think I can remove points with that data structure? Or at least I couldn't figure that out?<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Can anybody recommend anything in vtk that can do all of the above? Or indeed as equally valid confirm that the above cannot all be met currently within vtk?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Speed and efficiency of both point addition and removal are vital. I only care about 3D points, so not bothered about connectivity of faces/cells etc.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Cheers,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Andy<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div class="MsoNormal" align="center" style="text-align:center">
<hr size="2" width="100%" align="center">
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:7.5pt;
font-family:"Arial","sans-serif";color:gray">La Universidad Central "Marta Abreu" de Las Villas en su 60 Aniversario. Fundada el 30 de noviembre de 1952. Visítenos en: http://www.uclv.edu.cu<br>
Participe en Universidad 2014, del 10 al 14 de febrero de 2014. Habana. Cuba. http://www.congresouniversidad.cu/<br>
<br>
</span><o:p></o:p></p>
<div class="MsoNormal" align="center" style="text-align:center">
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Se certificó que el correo no contiene virus.<br>
Comprobada por AVG - <a href="http://www.avg.es">www.avg.es</a><br>
Versión: 2013.0.3349 / Base de datos de virus: 3204/6513 - Fecha de la versión: 23/07/2013<br>
Las Definiciones de virus internas están desactualizadas.<o:p></o:p></p>
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<br>
<hr>
<font face="Arial" color="Gray" size="1">La Universidad Central "Marta Abreu" de Las Villas en su 60 Aniversario. Fundada el 30 de noviembre de 1952. Visítenos en: http://www.uclv.edu.cu<br>
Participe en Universidad 2014, del 10 al 14 de febrero de 2014. Habana. Cuba. http://www.congresouniversidad.cu/<br>
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