yade-dev team mailing list archive

[Vincent Richefeu <richefeu@xxxxxxxxxxxxxxx>]

> > I've got a problem with 'SimpleViscoelasticRelationships'. This
> > 2d-functor needs 2 'PhysicalParameters' that are casted into
> > 'SimpleViscoelasticBodyParameters' in the method 'go'.
> >
> > I want to use BcpConnection that inherit from
> > SimpleViscoelasticBodyParameters for one of the parameters.
> > The problem is that call 'SimpleViscoelasticRelationships::go' fail
> > (before entering the function).
> > I've got the following message:
> >
> > terminate called after throwing an instance of 'std::runtime_error'
> >   what():  DynLibDispatcher: ambiguous or undefined dispatch for 2d
> > multivirtual function, classes: SimpleViscoelasticBodyParameters
> > BcpConnection
>
> You need own 2d-functor "*Relationships" for your  
> PhysicalParameters (BcpConnection).
> SimpleViscoelasticRelationships only for  
> SimpleViscoelasticBodyParameters,
> see line 29 in SimpleViscoelasticRelationships.hpp:
>
> FUNCTOR2D 
> (SimpleViscoelasticBodyParameters,SimpleViscoelasticBodyParameters);
>
> It calculate InteractionPhysics (SimpleViscoelasticInteraction) from
> PhysicalParameters of contacting bodys.
>
> So, if you have own PhysicalParameters, you need own Relationships  
> for calculating InteractionPhysics from this parameters. (or you  
> can modify exant classes with take care of their default behavior  
> without changes)...

Thank for your answer Sega,

There is still something boring:
as I said, BcpConnection IS a SimpleViscoelasticBodyParameters.
If I write my own functor, it will do exactly the same job as  
SimpleViscoelasticRelationships !
Besides, casting BcpConnection into SimpleViscoelasticBodyParameters  
is possible
without any problem. Maybe the 'problem' come from the DynLibDispatcher?

Vincent