dolfin team mailing list archive

[murtazo <murtazo@xxxxxxxxxx>]

On 02/03/11 18:45, Anders Logg wrote:
> On Thu, Feb 03, 2011 at 12:16:29PM +0100, Murtazo Nazarov wrote:
> > On 02/02/2011 07:57 PM, Anders Logg wrote:
> > > On Wed, Feb 02, 2011 at 06:56:02PM +0000, Garth N. Wells wrote:
> > > > On 02/02/11 10:55, Anders Logg wrote:
> > > > > On Mon, Jan 31, 2011 at 09:40:19AM +0100, Anders Logg wrote:
> > > > > > I'm working on a fix. The problem wasn't visible when DOLFIN_NOPLOT
> > > > > > was not set.
> > > > > This should now be fixed. There might still be some minor issues that
> > > > > the buildbot will pick up.
> > > > >
> > > > > Here's a short summary of what has changed:
> > > > >
> > > > > 1. The refine() function returns a reference to the refined mesh
> > > > > instead of return-by-value in C++. The following no longer works:
> > > > >
> > > > >    mesh = refine(mesh);
> > > > >
> > > > > Instead, one must do
> > > > >
> > > > >    Mesh&   refined_mesh = refine(mesh);
> > How can I copy back the refined mesh into mesh? This does not work for me:
> >
> >    Mesh&  refined_mesh = refine(mesh1);
> >    mesh1 = refined_mesh;
> This is not allowed since you would overwrite the original mesh by its
> own child (which would mess up the child-parent relationships of the
> mesh).
>
> Either use refined_mesh, or mesh1.child().

Yes, I would like to overwrite. I would like to create a mesh which is 
obtained by locally refining the initial mesh by many times. For this I 
need to overwrite the mesh, instead of defining many meshes with 
different names.

murtazo

> --
> Anders
>
>
> > murtazo
> >
> > > > > or equivalently
> > > > >
> > > > >    refine(mesh);
> > > > >    Mesh&   refined_mesh = mesh.child();
> > > > Can get a shared pointer? Otherwise we're in trouble if mesh goes out of
> > > > scope.
> > > One can use
> > >
> > >    mesh.parent_shared_ptr()
> > >    mesh.child_shared_ptr()
> >
> > _______________________________________________
> > Mailing list: https://launchpad.net/~dolfin
> > Post to     : dolfin@xxxxxxxxxxxxxxxxxxx
> > Unsubscribe : https://launchpad.net/~dolfin
> > More help   : https://help.launchpad.net/ListHelp