CGAL users discussion list

[Sebastien Loriot <>]

When adding a mesh, it is then considered as fixed (it should not be 
modified). Its position in space is given by its coordinates.
When setting a transformation, it is done on the input mesh
even if a previous transformation was applied. If you want to
apply several transformation one after the other, you have to
update yourself the transformation accordingly.

I'm not sure to understand the question so let me know if I got it wrong.

Best,

Sebastien.

On 12/14/21 4:26 PM, gakkiloving ( via cgal-discuss 
Mailing List) wrote:
> Dear all:
> When I use the triangle meshes collision detection functions or 
> intersection detection functions:
> https://doc.cgal.org/latest/Polygon_mesh_processing/classCGAL_1_1Rigid__triangle__mesh__collision__detection.html 
> <https://doc.cgal.org/latest/Polygon_mesh_processing/classCGAL_1_1Rigid__triangle__mesh__collision__detection.html>
> https://doc.cgal.org/latest/Polygon_mesh_processing/group__PMP__predicates__grp.html 
> <https://doc.cgal.org/latest/Polygon_mesh_processing/group__PMP__predicates__grp.html>
> to detect collisions, intersections and inclusions among input meshes.
> Whether these methods have automatically converted these meshes to the 
> same coordinate？
>
>   * If not, how to judge the positional relationships of the meshes
>     under different coordinate systems.
>   * If so, in which method is the coordinate system transformation
>     encapsulated
>
>         
> gakkiloving
>
>
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