Implement updateConstraint and solveVelocityConstraint in pbdConstraint
///
/// \brief update constraint
/// \param model \class PbdModel
/// \return true if succeeded
/// TODO: Remove this or implement for child classes in future
///
virtual bool updateConstraint(PbdModel& model)
{
return true;
}
///
/// \brief compute delta velocity, specifically for rigid bodies
/// \param model \class PbdModel
/// \return true if succeeded
/// TODO: Remove this or implement for child classes in future
///
virtual bool solveVelocityConstraint(PbdModel& model)
{
return true;
}