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<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> Got a weird problem. I have a surface where I’m seeing this odd twisting. The code looks like:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">-------------------------------<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:#010001">vtkSmartPointer</span><span style="font-size:10.0pt;font-family:"Courier New""><<span style="color:#010001">vtkAppendPolyData</span>>
<span style="color:#010001">pBranchData</span> = <span style="color:#010001">GetSurfacePolyData</span>();<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:#010001">vtkSmartPointer</span><span style="font-size:10.0pt;font-family:"Courier New""><<span style="color:#010001">vtkPolyDataMapper</span>>
<span style="color:#010001">pMapper</span> = <span style="color:#010001">vtkSmartPointer</span><<span style="color:#010001">vtkPolyDataMapper</span>>::<span style="color:#010001">New</span>();<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:#010001">pMapper</span><span style="font-size:10.0pt;font-family:"Courier New"">-><span style="color:#010001">SetInputConnection</span>(<span style="color:#010001">pBranchData</span>
-><span style="color:#010001">GetOutputPort</span>());<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:#010001">pMapper</span><span style="font-size:10.0pt;font-family:"Courier New"">-><span style="color:#010001">ScalarVisibilityOff</span>();<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:#010001">m_pSurfaceActor</span><span style="font-size:10.0pt;font-family:"Courier New""> =
<span style="color:#010001">vtkSmartPointer</span><<span style="color:#010001">vtkActor</span>>::<span style="color:#010001">New</span>();<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New";color:#010001">m_pSurfaceActor</span><span style="font-size:10.0pt;font-family:"Courier New"">-><span style="color:#010001">SetMapper</span>(<span style="color:#010001">pMapper</span>);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">m_pRenderer-><span style="color:#010001">AddViewProp(m_pSurfaceActor);</span><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">-------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any idea what would cause this type of issue?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#404040"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#404040">Doug</span></b><o:p></o:p></p>
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