<div dir="ltr">Hi John,<div><br></div><div>There are no plans that I know of. I think that you can do this as long as you are comfortable with the underlying math. All you have to do is to find the quadratic pyramid class (VTK/Common/DataModel/vtkQuadraticPyramid.cxx and .h), copy it into a new class and change functions that depend on the basis functions. You also need to add the new classname to the CMakeLists.txt file in that directory. Just grep for vtkQuadraticPyramid in the whole repo and replicate it for the new class. Note that the amount of code involved in implementing such a cell is non-trivial. However, the code itself is not that complicated. We are here to help if you take on this adventure :-)</div>
<div><br></div><div>Best,</div><div>-berk</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Dec 5, 2013 at 12:21 AM, John Peterson <span dir="ltr"><<a href="mailto:jwpeterson@gmail.com" target="_blank">jwpeterson@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">It appears that VTK has a 13-node pyramid element type<br>
(VTK_QUADRATIC_PYRAMID) but no analogous 14-node pyramid. The 14th<br>
node would be at the center of the square base, and would<br>
theoretically allow one to make a conforming transition from a<br>
VTK_TRIQUADRATIC_HEXAHEDRON to a VTK_QUADRATIC_TETRA element.<br>
<br>
Are there any plans to add such an element, and if not, is it a task<br>
that a complete VTK novice could even hope to undertake?<br>
<br>
Thanks,<br>
John<br>
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