On 4/15/11 4:49 PM, Roy Stogner wrote:
>
> On Fri, 15 Apr 2011, Boyce Griffith wrote:
>
>> On 4/15/11 4:37 PM, Roy Stogner wrote:
>>>
>>> On Fri, 15 Apr 2011, Boyce Griffith wrote:
>>>
>>>> The only complication is that the coordinate system being used for the
>>>> mesh is a Lagrangian (material) coordinate system, and the line is in
>>>> the current (physical) coordinate system, but I suppose that I can
>>>> call Elem::build_side() and then reset the nodal positions of the
>>>> generated side element to correspond to the current positions.
>>>
>>> Hmm... one catch with that is that you'll ideally want to make sure
>>> you're moving around *copied* nodes; otherwise you'll have the same
>>> multithreading race conditions that the library ALE code has.
>>
>> OK; and I guess these will need to be manually allocated and deleted?
>
> Make them local stack variables so you can avoid new and delete, but
> you're essentially right, I don't think we've got any facility in
> libMesh right now for doing a "deep copy" of an Elem.
I tried something like:
AutoPtr<Elem> side_elem = elem->build_side(side);
for (int k = 0; k < n_node; ++k)
{
side_elem->set_node(k) = ...;
}
// do stuff
for (int k = 0; k < n_node; ++k)
{
side_elem->set_node(k) = NULL;
}
where the last part was to make sure that I didn't accidentally try to
use the "cloned" nodes. However, it seems like this also sets the node
pointers to NULL in elem. Does side_elem->set_node(k) also have the
effect of calling elem->set_node(k) ?
Thanks,
-- Boyce
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