[Gmsh] Extrude from imported geometry

[Daniel]

Hi,

Even with the most simple example, I am not able to extrude a mesh from
an imported .brep geometry (see attachment). I always get an error
message like:

Error   : Impossible to extrude entity 1 (of type 306)

Extruding from native gmsh geometry works fine.

Is the Extrude command not supported for imported geometry, or am I
doing something wrong?


Best Regards
Daniel
-------------- next part --------------
Point(1) = {0, 0, 0};
Point(2) = {1, 0, 0};
Point(3) = {1, 1, 0};
Point(4) = {0, 1, 0};
Line(1) = {1,2};
Line(2) = {2,3};
Line(3) = {3,4};
Line(4) = {4,1};
Line Loop(1) = {1,2,3,4};
Plane Surface(1) = {1};
Extrude {0,0,1} {Surface{1};Layers{10};}
Mesh 3;
-------------- next part --------------
Merge "rectangle.brep";
Extrude {0,0,1} {Surface{1};Layers{10};}
Mesh 3;
-------------- next part --------------
DBRep_DrawableShape

CASCADE Topology V1, (c) Matra-Datavision
Locations 1
1
              1 -3.06161699786e-17               0               0 
3.06161699786e-17               1               0               0 
              0               0               1               0 
Curve2ds 0
Curves 4
1 0 0 0 1 0 0 
1 1 0 0 0 1 0 
1 1 1 0 -1 0 0 
1 0 1 0 0 -1 0 
Polygon3D 0
PolygonOnTriangulations 4
2 1 2 
p 0.00333333333333333 1 0 1 
2 2 3 
p 0.00333333333333333 1 0 1 
2 3 4 
p 0.00333333333333333 1 0 1 
2 4 1 
p 0.00333333333333333 1 0 1 
Surfaces 1
1 0.5 0.5 0 0 0 1 1 0 -0 -0 1 0 
Triangulations 1
4 2 1 0
0 0 0 1 0 0 1 1 0 0 1 0 -0.5 -0.5 0.5 -0.5 0.5 0.5 -0.5 0.5 3 1 2 3 4 1 

TShapes 11
Ve
1e-07
0 0 0
0 0

0101101
*
Ve
1e-07
1 0 0
0 0

0101101
*
Ed
 1e-07 1 1 0
1  1 0 0 1
6  1 1 0
0

0101000
+11 0 -10 0 *
Ve
1e-07
1 1 0
0 0

0101101
*
Ed
 1e-07 1 1 0
1  2 0 0 1
6  2 1 0
0

0101000
+10 0 -8 0 *
Ve
1e-07
0 1 0
0 0

0101101
*
Ed
 1e-07 1 1 0
1  3 0 0 1
6  3 1 0
0

0101000
+8 0 -6 0 *
Ed
 1e-07 1 1 0
1  4 0 0 1
6  4 1 0
0

0101000
+6 0 -11 0 *
Wi

0101100
+9 0 +7 0 +5 0 +4 0 *
Fa
0  1e-07 1 0
2  1
0101000
+3 0 *
Co

1100000
+2 1 *

+1 0