level_set_perimeter_output.h

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/*
 * MAST: Multidisciplinary-design Adaptation and Sensitivity Toolkit
 * Copyright (C) 2013-2020  Manav Bhatia and MAST authors
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */


#ifndef _mast__level_set_perimeter_output_h__
#define _mast__level_set_perimeter_output_h__

// MAST includes
#include "base/output_assembly_elem_operations.h"


namespace MAST {
    
    // Forward declerations
    class LevelSetIntersection;

    class LevelSetPerimeter:
    public MAST::OutputAssemblyElemOperations {
        
        public:
        
        LevelSetPerimeter();
        
        virtual ~LevelSetPerimeter();
        
        void set_heaviside_smoothing_delta(Real d=0.1) { _heaviside_smooth_delta = d;}
        
        virtual void
        set_elem_data(unsigned int dim,
                      const libMesh::Elem& ref_elem,
                      MAST::GeomElem& elem) const { }
        
        virtual void
        init(const MAST::GeomElem& elem);
        
        virtual void zero_for_analysis();
        
        
        virtual void zero_for_sensitivity();
        
        virtual Real output_for_elem();
        
        virtual Real output_total();
        
        virtual Real output_sensitivity_for_elem(const MAST::FunctionBase& p);
        
        virtual Real output_sensitivity_total(const MAST::FunctionBase& p);
        
        virtual void output_derivative_for_elem(RealVectorX& dq_dX){
            // does not make sense for this output. // should not get called.
            libmesh_error();
        }
        
        
        virtual void evaluate();
        
        virtual void evaluate_sensitivity(const MAST::FunctionBase& f);
        
        virtual void evaluate_shape_sensitivity(const MAST::FunctionBase& f) {
            
            libmesh_assert(false); // to be implemented
        }
        
        virtual void
        evaluate_topology_sensitivity(const MAST::FunctionBase& f);

        virtual void evaluate_topology_sensitivity(const MAST::FunctionBase& f,
                                                   const MAST::FieldFunction<RealVectorX>& vel);
        
    protected:
        
        Real                                _per;
        Real                                _dper_dp;
        Real                                _heaviside_smooth_delta;
    };
    
}




#endif // _mast__level_set_volume_output_h__