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Thanks Andy.<br>
<br>
What about simply adding another mode, e.g.
SetTensorModeToComputeGreenLagrangeStrain, to the vtkCellDerivatives
filter? Would the attached patch make sense?<br>
<br>
Martin<br>
<br>
<div class="moz-cite-prefix">On 28/12/2015 14:12, Andy Bauer wrote:<br>
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<blockquote
cite="mid:CAMaOp+HR7U33NC6cerziat1yLKA0LP=0QvQ4OH1d1hrc4xvNdw@mail.gmail.com"
type="cite">
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<div>Hi Martin,<br>
<br>
</div>
Changing the name of the SetTensorModeToComputeStrain method
to something else would break backward compatibility which
is generally avoided in VTK. Other options for this include
deriving a class to compute non-linear strain from
vtkCellDerivatives if it shares enough of the algorithm with
the linearized version or maybe just creating a new filter.<br>
<br>
</div>
Cheers,<br>
</div>
Andy<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Sat, Dec 26, 2015 at 4:36 PM, Martin
Genet <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:martin.genet@polytechnique.edu"
target="_blank">martin.genet@polytechnique.edu</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Dear VTK
users:<br>
<br>
I realize that the vtkCellDerivatives filter, when
SetTensorModeToComputeStrain is activated, returns the
symmetric part of the gradient of the input vector field,
which is the linearized strain tensor, i.e., not a proper
measure of deformation when large displacements are
involved. Would that make sense to have two different modes,
SetTensorModeToComputeLinearizedStrain or
SetTensorModeToComputeSymmetricGradient, and
SetTensorModeToComputeStrain or
SetTensorModeToComputeGreenLagrangeStrain? Thanks!<br>
<br>
Martin<br>
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