did you try without OpenCASCADE kernel or it's madatory using it? The below
lines should do the trick.
*Merge "Box.stl" ;*
*Physical Surface("Box") = {1};*
*Merge "Sphere.stl";*
*Physical Surface("Sphere") = {2};*
*Surface Loop(1) = {1}; // Box surface*
*Surface Loop(2) = {2}; // Sphere
An STL is a just a mesh - so no, there are no boolean operations available.
CG
> On 4 Feb 2019, at 17:47, Octavio Castillo Reyes
> wrote:
>
> Dear gmsh team,
>
> I am trying to create meshes with topography (including bathymetry and other
> complex embedding bodies). I have made several ex
Dear gmsh team,
I am trying to create meshes with topography (including bathymetry and
other complex embedding bodies). I have made several experiments:
* Boolean operations with meshes (not supported by gmsh)
* Create flat surfaces and then interpolate them to a given topography
(works well but