[Gmsh] rotating an stl

[Ricardo Ruiz Baier]

Dear all,


I would like to rotate an stl (actually, the resulting volumetric mesh)
around the z-axis.

If I simply do

Merge "test_surface.stl";
Surface Loop(2) = {1};
Volume(3) = {2};
Rotate {{0, 0, 1}, {0, 0, 0}, Pi/4} { Volume{3};}

Then I can generate the volumetric mesh (and eventually rescale it with
Mesh.ScalingFactor = 2;) but the rotation has not been applied.

If instead I apply the rotation on the surface

Rotate {{0, 0, 1}, {0, 0, 0}, Pi/4} { Surface{1};}

then gmsh throws an error:

Impossible to transform entity 1 (of type 305)


Any assistance with this issue is much appreciated.

Kind regards,

Ricardo



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