function stateDerivative = genericDerivativeStateVector(state, time, ...
    pbeDefinition, solverStateOriginal)
% compute derivative of states
%
% THIS IS NO USER FUCNTION

% The elk-library: convex geometry applied to crystallization modeling.
%   Copyright (C) 2012 Alexander Reinhold
%
% This program is free software: you can redistribute it and/or modify it 
%   under the terms of the GNU General Public License as published by the 
%   Free Software Foundation, either version 3 of the License, or (at your 
%   option) any later version.
%
% This program is distributed in the hope that it will be useful, but 
%   WITHOUT ANY WARRANTY; without even the implied warranty of 
%   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU 
%   General Public License for more details.
%
% You should have received a copy of the GNU General Public License along 
%   with this program.  If not, see <http://www.gnu.org/licenses/>.

% wrapper to structure handler functional
%   this isolation is required to handle densities (growth rate gradients)
%   easily

% unpack
solverState = unpackState(state, time, solverStateOriginal);
% get  derivative
derivativeStruct = genericDerivative(solverState, time, pbeDefinition);
% pack
stateDerivative = packState(derivativeStruct);

end