[Gmsh] Finding coordinates of transformed point in python api

Peter Johnston p.johnston at griffith.edu.au
Mon Sep 30 04:27:29 CEST 2019


Hello,

My apologies if this is a dumb question, but I am having difficulty working out how to find the coordinates of a transformed point in the python api.

I have created a point with:

apex_pt = gmsh.model.occ.addPoint(a_epi,0.0,0.0,0,-1)

and transform it (translate and rotate) with a routine that I wrote:

transform([0,apex_pt])

Having inspected the geometry and mesh, I know that the transformation puts the point in the correct position. However, I cannot work out how to find the coordinates of the new point. I have tried using getEntities (for dimension 0 entities) and getNodes for each entity returned, but this does not work for the one particular entity which is my apex_pt.

Any help would be much appreciated.

Thanks,

Peter.

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Associate Professor Peter Johnston (FAustMS, FIMA)
School of Environment and Science
Griffith University | Nathan | QLD 4111 | Technology (N44) Room 3.19
T +61 7 373 57748| F +61 7 373 57656 Email p.johnston at griffith.edu.au
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