yade-dev team mailing list archive

[Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>]

> > To summarize, what should be in Body->state? The set to choose from is:
> >
> > * position, velocity, acceleration, mass;
> > * orientation, angular velocity, angular acceleration, inertia.
> >
> >   
> inertia and mass : no.
> The rest should be in "state" since it changes with time.
Oh wait!

Reading this in the blueprint description rings a bell for me :
"Refactor PhysicalParameters into constant part (Material) and variable 
part (BodyState)"

1/ Mass is usually constant but it is not a material parameter.
2/ What will happen if one needs to modify the mass of some body during 
a simulation?

There is in fact no strict equivalence between "constant" and 
"material", or between "body" and "variable".

Bruno

>


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