<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div></div><div><div><font class="Apple-style-span" face="Monaco" size="2"><span class="Apple-style-span" style="font-size: 10px;">vtkDataSetSurfaceFilter triangleCellDataSetSurfaceFilter</span></font></div><div><font class="Apple-style-span" face="Monaco" size="2"><span class="Apple-style-span" style="font-size: 10px;"> triangleCellDataSetSurfaceFilter SetInput aTriangleGrid</span></font></div><div><font class="Apple-style-span" face="Monaco" size="2"><span class="Apple-style-span" style="font-size: 10px;"><br></span></font></div><div><font class="Apple-style-span" face="Monaco" size="2"><span class="Apple-style-span" style="font-size: 10px;">vtkPolyDataNormals triangleCellNormals</span></font></div><div><font class="Apple-style-span" face="Monaco" size="2"><span class="Apple-style-span" style="font-size: 10px;"> triangleCellNormals SetInputConnection [triangleCellDataSetSurfaceFilter GetOutputPort]</span></font></div><div><font class="Apple-style-span" face="Monaco" size="2"><span class="Apple-style-span" style="font-size: 10px;"> triangleCellNormals ComputePointNormalsOff</span></font></div><div><font class="Apple-style-span" face="Monaco" size="2"><span class="Apple-style-span" style="font-size: 10px;"> triangleCellNormals ComputeCellNormalsOn</span></font></div><div><font class="Apple-style-span" face="Monaco" size="2"><span class="Apple-style-span" style="font-size: 10px;"> triangleCellNormals ConsistencyOn</span></font></div><div><font class="Apple-style-span" face="Monaco" size="2"><span class="Apple-style-span" style="font-size: 10px;"> triangleCellNormals AutoOrientNormalsOn</span></font></div><div><br></div><div><font class="Apple-style-span" face="Monaco" size="2"><span class="Apple-style-span" style="font-size: 10px;">vtkPolyDataNormal::ComputeCellNormalsOn() </span></font><b><span class="Apple-style-span" style="text-decoration: underline;">doesn't seem to be working</span></b>. There should only be 1 single cell normal, right? I created this example to explicitly use a single triangle cell, to test this funtion.</div><div><br></div><div>I've been at this problem for 2 days straight and tried all sorts of suggestions, but I still haven't found an explanation for describing the above results. Please help!! :-) </div><div><br></div><div>I've attached the full source code with this message.</div><div><br></div><div></div></div></body></html>