There is also vtkMassProperties filter for triangular mesh that does it by presetting vtkMassProperties::<a class="el" href="http://www.vtk.org/doc/nightly/html/classvtkMassProperties.html#a02ff978e03cdb233de1851e7d011917b" style="color:rgb(70,101,162);font-weight:bold;text-decoration:none;font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:14px;line-height:11px">GetSurfaceArea</a>.<div>
<br></div><div>Jana<br><div><br><div class="gmail_quote">On 18 June 2012 18:21, Jana Sefcikova <span dir="ltr"><<a href="mailto:neollie@gmail.com" target="_blank">neollie@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Clemens, <div><br></div><div>for sphere created by vtkSphereSource you could deduct surface area analytically by 4*PI*(R^2) where R = vtkSphereSource::GetRadius .</div><div><br></div><div>For generic surface you can iterate over its cells and sum cells area if cell type supports ComputeArea method. For example if cell is triangle type you can use vtkTriangle::ComputeArea (Example: <a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/TriangleArea" target="_blank">TriangleArea</a> ) .</div>
<div><br></div><div>Perhaps there are also other methods.</div><span class="HOEnZb"><font color="#888888"><div><br></div><div>Jana</div><div><br></div><div><br></div>
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