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    <div class="moz-cite-prefix">This is exactly what I want thanks!<br>
      <br>
      It just doesnt take my scalar values to build regions<br>
      <br>
      i have scalar values like e.g.<br>
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      <br>
      for each value I want to create regions if there is a connection<br>
      my problem is, that I just get 1 big region, but depending on my
      values i should get about 100 regions<br>
      <br>
      My Code:<br>
      <br>
      polydata-&gt;GetCellData()-&gt;SetScalars(arr);   //arr contains
      my scalars for each cell (Type: vtkFloatArray)<br>
      vtkSmartPointer&lt;vtkPolyDataConnectivityFilter&gt; regionFilter
      = vtkSmartPointer&lt;vtkPolyDataConnectivityFilter&gt;::New();<br>
regionFilter-&gt;SetInputConnection(polydata-&gt;GetProducerPort());<br>
              regionFilter-&gt;ScalarConnectivityOn();    <br>
              regionFilter-&gt;SetFullScalarConnectivity(1);<br>
              regionFilter-&gt;SetScalarRange(1,9090);<br>
              regionFilter-&gt;SetExtractionModeToAllRegions();    <br>
              regionFilter-&gt;SetColorRegions(1);<br>
              regionFilter-&gt;Update();<br>
      vtkSmartPointer&lt;vtkPolyDataMapper&gt; conMapper =
      vtkSmartPointer&lt;vtkPolyDataMapper&gt;::New();<br>
             
      conMapper-&gt;SetInputConnection(regionFilter-&gt;GetOutputPort());<br>
              conMapper-&gt;Update();<br>
      stlActor-&gt;SetMapper(conMapper);<br>
      <br>
      RenderData(stlActor); //my function for rendering<br>
      <br>
      <br>
      <br>
      Am 11.04.2013 18:07, schrieb Bill Lorensen:<br>
    </div>
    <blockquote
cite="mid:CADZJ4hPZRNVg+5wY2qnjeqzt0_-RnbRH8kght45drzXOjsjqaA@mail.gmail.com"
      type="cite">
      <div dir="ltr">There is a "region growing" filter in VTK.
        <div>
          <div>// .NAME vtkPolyDataConnectivityFilter - extract
            polygonal data based on geomet\</div>
          <div>ric connectivity                                        
                                   </div>
          <div>// .SECTION Description                                  
                                  </div>
          <div>// vtkPolyDataConnectivityFilter is a filter that
            extracts cells that           </div>
          <div>// share common points and/or satisfy a scalar threshold
                                   </div>
          <div>// criterion. (Such a group of cells is called a region.)
            The filter            </div>
          <div>// works in one of six ways: 1) extract the largest (most
            points) connected reg\</div>
          <div>ion                                                      
                                  </div>
          <div>// in the dataset; 2) extract specified region numbers;
            3) extract all          </div>
          <div>// regions sharing specified point ids; 4) extract all
            regions sharing          </div>
          <div>// specified cell ids; 5) extract the region closest to
            the specified           </div>
          <div>// point; or 6) extract all regions (used to color
            regions).                    </div>
          <div>//                        </div>
        </div>
        <div><br>
        </div>
        <div><br>
        </div>
      </div>
      <div class="gmail_extra"><br>
        <br>
        <div class="gmail_quote">
          On Thu, Apr 11, 2013 at 11:13 AM, Marc Huber <span dir="ltr">&lt;<a
              moz-do-not-send="true" href="mailto:marchuber.hft@gmx.de"
              target="_blank">marchuber.hft@gmx.de</a>&gt;</span> wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div text="#000000" bgcolor="#FFFFFF">
              <div>i want to divide objects into polygons (regions)
                which point in a very similiar direction.<br>
                <br>
                I have computed normal vectors for the points of the
                object.<br>
                now i want to extend a method of image processing to 3D.<br>
                in an image i'm growing regions with similar color
                values starting from different seed points.<br>
                this i want to apply in a changed way to the 3D space<br>
                my normal vectors are my "color values" and I want to
                iterate through the 3D space to grow regions.<br>
                <br>
                if i have no regular spacing between the points i might
                get problems<br>
                <br>
                <br>
                <br>
                Am 11.04.2013 16:44, schrieb Bill Lorensen:<br>
              </div>
              <div>
                <div class="h5">
                  <blockquote type="cite">
                    <div dir="ltr">You could create a volume of
                      distances to the triangles. The distance field
                      will have regular spacing in x,y,z but the x,y,z
                      value will be distance to the surface.
                      <div><br>
                      </div>
                      <div>Are you trying to compute something? Maybe if
                        we know what the final problem is we can provide
                        some ideas.</div>
                      <div><br>
                      </div>
                    </div>
                    <div class="gmail_extra"><br>
                      <br>
                      <div class="gmail_quote">On Thu, Apr 11, 2013 at
                        8:54 AM, Marc Huber <span dir="ltr">&lt;<a
                            moz-do-not-send="true"
                            href="mailto:marchuber.hft@gmx.de"
                            target="_blank">marchuber.hft@gmx.de</a>&gt;</span>
                        wrote:<br>
                        <blockquote class="gmail_quote" style="margin:0
                          0 0 .8ex;border-left:1px #ccc
                          solid;padding-left:1ex">
                          <div>
                            <div
                              style="font-family:Verdana;font-size:12.0px">
                              <div>unfortunatelly not. I need it and
                                hoped that vtk is able to do this.</div>
                              <div>I have to iterate through point
                                clouds with a regular spacing like
                                iterating through pixels of an image. So
                                in fact I don't even need te
                                visualization, just the point cloud
                                extracted from the visualization.</div>
                              <div> </div>
                              <div>thanks for your help<br>
                                 </div>
                              <div>Best regards<br>
                                Marc</div>
                              <div> 
                                <div> 
                                  <div name="quote" style="margin:10px
                                    5px 5px 10px;padding:10px 0 10px
                                    10px;border-left:2px solid
                                    #c3d9e5;word-wrap:break-word">
                                    <div style="margin:0 0 10px 0"><b>Gesendet:</b> Donnerstag,

                                      11. April 2013 um 14:45 Uhr
                                      <div><br>
                                        <b>Von:</b> "Bill Lorensen" &lt;<a
                                          moz-do-not-send="true"
                                          href="mailto:bill.lorensen@gmail.com"
                                          target="_blank">bill.lorensen@gmail.com</a>&gt;<br>
                                        <b>An:</b> "Marc Huber" &lt;<a
                                          moz-do-not-send="true"
                                          href="mailto:marchuber.hft@gmx.de"
                                          target="_blank">marchuber.hft@gmx.de</a>&gt;<br>
                                        <b>Cc:</b> "VTK Users" &lt;<a
                                          moz-do-not-send="true"
                                          href="mailto:vtkusers@vtk.org"
                                          target="_blank">vtkusers@vtk.org</a>&gt;<br>
                                      </div>
                                      <b>Betreff:</b> Re: Re: [vtkusers]
                                      TIN to regular mesh</div>
                                    <div>
                                      <div>
                                        <div name="quoted-content">
                                          <div>I don't know of a vtk
                                            filter that does this.
                                            <div> </div>
                                            <div>Do you have a reference
                                              for an algorithm that does
                                              this?</div>
                                            <div> </div>
                                          </div>
                                          <div class="gmail_extra"> 
                                            <div class="gmail_quote">On
                                              Thu, Apr 11, 2013 at 8:43
                                              AM, Marc Huber <span>&lt;<a
                                                  moz-do-not-send="true"
href="http://marchuber.hft@gmx.de" target="_blank">marchuber.hft@gmx.de</a>&gt;</span>
                                              wrote:
                                              <blockquote
                                                class="gmail_quote"
                                                style="margin:0 0 0
                                                0.8ex;border-left:1.0px
                                                rgb(204,204,204)
                                                solid;padding-left:1.0ex">
                                                <div>
                                                  <div
                                                    style="font-family:Verdana;font-size:12.0px">
                                                    <div> </div>
                                                    <div>Sorry for
                                                      leaving so much
                                                      unclear.</div>
                                                    <div>I have closed
                                                      volumes e.g. a CAD
                                                      model of a pipe<br>
                                                       </div>
                                                    <div>Best regards<br>
                                                      Marc Huber</div>
                                                    <div> 
                                                      <div> 
                                                        <div
                                                          style="margin:10.0px
                                                          5.0px 5.0px
                                                          10.0px;padding:10.0px
                                                          0 10.0px
                                                          10.0px;border-left:2.0px
                                                          solid
                                                          rgb(195,217,229)">
                                                          <div
                                                          style="margin:0
                                                          0 10.0px 0"><b>Gesendet:</b> Donnerstag,

                                                          11. April 2013
                                                          um 14:22 Uhr<br>
                                                          <b>Von:</b> "Bill

                                                          Lorensen" &lt;<a
moz-do-not-send="true" href="http://bill.lorensen@gmail.com"
                                                          target="_blank">bill.lorensen@gmail.com</a>&gt;<br>
                                                          <b>An:</b> "Marc
                                                          Huber" &lt;<a
moz-do-not-send="true" href="http://marchuber.hft@gmx.de"
                                                          target="_blank">marchuber.hft@gmx.de</a>&gt;<br>
                                                          <b>Cc:</b> "VTK
                                                          Users" &lt;<a
moz-do-not-send="true" href="http://vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a>&gt;<br>
                                                          <b>Betreff:</b> Re:

                                                          [vtkusers] TIN
                                                          to regular
                                                          mesh</div>
                                                          <div>
                                                          <div>
                                                          <div>
                                                          <div>What
                                                          source of
                                                          object is
                                                          being modeled?
                                                          Is it a closed
                                                          volume? An
                                                          elevation map?</div>
                                                          <div
                                                          class="gmail_extra"> 
                                                          <div
                                                          class="gmail_quote">On

                                                          Thu, Apr 11,
                                                          2013 at 2:09
                                                          AM, Marc Huber
                                                          <span>&lt;<a
                                                          moz-do-not-send="true"
href="http://marchuber.hft@gmx.de" target="_blank">marchuber.hft@gmx.de</a>&gt;</span>
                                                          wrote:
                                                          <blockquote
                                                          class="gmail_quote"
                                                          style="margin:0
                                                          0 0
                                                          0.8ex;border-left:1.0px
                                                          rgb(204,204,204)
solid;padding-left:1.0ex">
                                                          <div>
                                                          <div>I need a
                                                          quad mesh
                                                          where the
                                                          point distance
                                                          in x and y
                                                          direction is
                                                          always the
                                                          same.<br>
                                                           
                                                          <div>Best
                                                          regards</div>
                                                          <div>Marc</div>
                                                          <div> </div>
                                                          </div>
                                                          <div><br>
                                                          Am 10.04.2013
                                                          um 21:52
                                                          schrieb Bill
                                                          Lorensen &lt;<a
moz-do-not-send="true" href="http://bill.lorensen@gmail.com"
                                                          target="_blank">bill.lorensen@gmail.com</a>&gt;:<br>
                                                           </div>
                                                          <div>
                                                          <div>
                                                          <blockquote>
                                                          <div>
                                                          <div>What is
                                                          your
                                                          definition of
                                                          "regular
                                                          mesh"? A
                                                          regular
                                                          triangular
                                                          mesh is one
                                                          where each
                                                          element has 3
                                                          edges and the
                                                          valence of
                                                          each interior
                                                          point is 6. A
                                                          regular quad
                                                          mesh is one
                                                          where each
                                                          element has 4
                                                          edges and the
                                                          valens of
                                                          interior
                                                          points is 4.<br>
                                                          <br>
                                                           </div>
                                                          <div
                                                          class="gmail_extra"> 
                                                          <div
                                                          class="gmail_quote">On

                                                          Wed, Apr 10,
                                                          2013 at 11:50
                                                          AM, Marc Huber
                                                          <span>&lt;<a
                                                          moz-do-not-send="true"
href="http://marchuber.hft@gmx.de" target="_blank">marchuber.hft@gmx.de</a>&gt;</span>
                                                          wrote:
                                                          <blockquote
                                                          class="gmail_quote"
                                                          style="margin:0
                                                          0 0
                                                          0.8ex;border-left:1.0px
                                                          rgb(204,204,204)
solid;padding-left:1.0ex">
                                                          <div>
                                                          <div
                                                          style="font-family:Verdana;font-size:12.0px">
                                                          <div>
                                                          <div>Hi,</div>
                                                          <div> </div>
                                                          <div>I have a
                                                          CAD model,
                                                          which is
                                                          triangulated.
                                                          What I'd like
                                                          to do is to
                                                          create a
                                                          regular mesh
                                                          of it.</div>
                                                          <div>I already
                                                          searched in
                                                          the archives
                                                          and found out
                                                          that it might
                                                          help to use
                                                          shepard. I
                                                          awfully don't
                                                          get it managed
                                                          to solve this
                                                          problem. Maybe
                                                          I’m also just
                                                          searching with
                                                          the wrong
                                                          keywords.</div>
                                                          <div>Has maybe
                                                          somebody some
                                                          example code
                                                          for this? (if
                                                          c++, tcl,
                                                          python,...
                                                          doesn't
                                                          matter)</div>
                                                          <div> </div>
                                                          <div>I'd be
                                                          very thankful
                                                          if anybody
                                                          could help me.</div>
                                                          <div> </div>
                                                          </div>
                                                          <div>Best
                                                          regards<br>
                                                          <span><font
                                                          color="#888888">Marc</font></span></div>
                                                          </div>
                                                          </div>
                                                          <br>
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                                                          <br>
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              </div>
              <span class="HOEnZb"><font color="#888888">
                  <pre cols="72">-- 
Best regards / Mit freundlichen Grüßen
Marc Huber</pre>
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        -- <br>
        Unpaid intern in BillsBasement at noware dot com<br>
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    <br>
    <pre class="moz-signature" cols="72">-- 
Best regards / Mit freundlichen Grüßen
Marc Huber</pre>
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