I think you need to reset the Origin and the Position of the Actor to its Initial Position too . <br><br>Regards<br>Darshan<br><br><div class="gmail_quote">On Sun, Sep 5, 2010 at 2:22 PM, David Doria <span dir="ltr">&lt;<a href="mailto:daviddoria%2Bvtk@gmail.com">daviddoria+vtk@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div class="im">On Sun, Sep 5, 2010 at 2:05 PM, Sebastien Jourdain<br>
&lt;<a href="mailto:sebastien.jourdain@kitware.com">sebastien.jourdain@kitware.com</a>&gt; wrote:<br>
&gt; Did you look into the UserTransform ? As I remember, I was using that instead...<br>
&gt;<br>
&gt; Just in case...<br>
&gt;<br>
&gt; Seb<br>
<br>
</div>Thanks for the suggestion Sebastien, but I did try looking at both the<br>
UserMatrix and the UserTransform but they both seem to be NULL:<br>
<br>
I just added this code to the original link for verification:<br>
<br>
        vtkMatrix4x4* userMatrix = this-&gt;CubeActor-&gt;GetUserMatrix();<br>
        if(userMatrix)<br>
          {<br>
          std::cout &lt;&lt; &quot;Has userMatrix&quot; &lt;&lt; std::endl;<br>
          }<br>
        else<br>
          {<br>
          std::cout &lt;&lt; &quot;No userMatrix!&quot; &lt;&lt; std::endl;<br>
          }<br>
<br>
        vtkLinearTransform* userTransform =<br>
           this-&gt;CubeActor-&gt;GetUserTransform();<br>
        if(userTransform)<br>
          {<br>
          std::cout &lt;&lt; &quot;Has userTransform&quot; &lt;&lt; std::endl;<br>
          }<br>
        else<br>
          {<br>
          std::cout &lt;&lt; &quot;No userTransform!&quot; &lt;&lt; std::endl;<br>
          }<br>
<br>
It outputs:<br>
<br>
No userMatrix!<br>
No userTransform!<br>
<br>
Any other thoughts?<br>
<div><div></div><div class="h5"><br>
David<br>
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