[Gmsh] Marking facets from a OpenCASCADE object

[Salazar De Troya, Miguel]

Hello

I need to use the OpenCASCADE engine because I am interested in doing simple boolean operations (basically, stitching two rectangles through the facets they are in contact with). From there, I would like to mark certain facets as physical. I am writing the context here to see if there is an alternative to my problem of marking facets on OpenCASCADE objects. Consider the following .geo script

SetFactory("OpenCASCADE");
Mesh.CharacteristicLengthMin = 0.02;
Mesh.CharacteristicLengthMax = 0.02;
s0 = news;
Rectangle(s0) = {0.0, 0.0, 0.0, 1.2, 1.5};
Physical Curve(1) = {?};

How can I know the curves the Rectangle s0 is made of? I can mark them on the GUI, but I am interested in doing so directly from the geo script.

Thanks
Miguel

Miguel A. Salazar de Troya
Postdoctoral Researcher, Lawrence Livermore National Laboratory
B141
Rm: 1085-5
Ph: 1(925) 422-6411
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