[Gmsh] Strange behaviour with extrude and physical geometry

[Jean Vis]

Hello,
I have got problem with this .geo file.
I do not understand why the elements related with the Physical Line 1011,12,13 are not in the .msh file.

The difference I see is:
- elements 3,6,9,12 are created from the command extrude
- elements 1,2,5,8 are not

Is this normal?

Thanks


Point(1)={0,0,0,0.1};
Point(2)={0.99,0,0,0.1};
Point(3)={0,0.99,0,0.1};

Circle(1) = {2,1,3};

Extrude Line {1,{0,1,0},{0,0,0},Pi/2}
             {Layers{30,111,1}; };
Extrude Line {2,{0,1,0},{0,0,0},Pi/2}
             {Layers{30,112,1}; };
Extrude Line {5,{0,1,0},{0,0,0},Pi/2}
             {Layers{30,113,1}; };
Extrude Line {8,{0,1,0},{0,0,0},Pi/2}
             {Layers{30,114,1}; };
Coherence;

Physical Line(10) = {3};
Physical Line(11) = {6};
Physical Line(12) = {9};
Physical Line(13) = {12};


Physical Point(1)={2,4,5,6};
Physical Point(2)={3};

Physical Surface(100)={111,112,113,114};
Physical Line(101) = {1,2,5,8};