On Mon, 4 Aug, 2014 at 2:25 PM, Anders Logg <[email protected]> wrote:
On Thu, Jul 17, 2014 at 09:37:37AM +0100, Chris Richardson wrote:
It may seem obvious, but I want to be able to attach parameters to a
Mesh before it calls its 'build' method.
This is because I need to be able to choose a ghosting strategy in
parallel (at present it is set by a GlobalParameter).
I was thinking of adding a constructor which can take a Parameters
argument to all Mesh constructors (i.e. including all
the Unit*Mesh constructors).
Advantages - flexibility, any future set of parameters can be
accommodated
- can remove current string arguments, like "diagonal"
for RectangleMesh
Disadvantages - user has to create a Parameters object if they want
to change the Mesh defaults
- cannot constrain set of allowed parameters in
advance
Any alternative suggestions welcome.
Are there more than 1 parameter to set? If not, an option would be to
add a parameter to the constructors with a default value.
I think we're approaching a sustainable solution here:
https://bitbucket.org/fenics-project/dolfin/issue/67
which resolves another issue too.
I would like to avoid optional arguments. One is ok, but two or more
leads to bugs. Some of the mesh constructors already take an optional
string argument.
Garth
--
Anders
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