/* This file is part of Lemma, a geophysical modelling and inversion API.
 * More information is available at http://lemmasoftware.org
 */

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

/**
 * @file
 * @date      06/16/2016 02:10:28 PM
 * @version   $Id$
 * @author    Trevor Irons (ti)
 * @email     tirons@egi.utah.edu
 * @copyright Copyright (c) 2016, University of Utah
 * @copyright Copyright (c) 2016, Trevor Irons & Lemma Software, LLC
 */

#ifndef  DEMGRAIN_INC
#define  DEMGRAIN_INC

#pragma once
#include "DEMParticle.h"

#include <random>
#include <time.h>

namespace Lemma {

    /**
      \brief
      \details
     */
    class DEMGrain : public DEMParticle {

        friend std::ostream &operator<<(std::ostream &stream, const DEMGrain &ob);

        public:

        // ====================  LIFECYCLE     =======================

        /*
         *  Factory method for generating concrete class.
         *  @return a std::shared_ptr of type DEMGrain
         */
        static std::shared_ptr< DEMGrain > NewSP();

        /**
         *  Uses YAML to serialize this object.
         *  @return a YAML::Node
         *   @see DEMGrain::DeSerialize
         */
        YAML::Node Serialize() const;

        /**
         *   Constructs an DEMGrain object from a YAML::Node.
         *   @see DEMGrain::Serialize
         */
        static std::shared_ptr<DEMGrain> DeSerialize(const YAML::Node& node);

        // ====================  OPERATORS     =======================

        // ====================  OPERATIONS    =======================

        /**
         *  Constructs the DEMGrain with random angular points. The points
         *  are called from normal distribution
         *  @param[input] npoints the number points to build a grain out of
         *  @param[input] sigma is the variance of the random distribution
         */
        void RandomPointCloud ( const int& npoints, const Real& sigma );

        // ====================  ACCESS        =======================

        // ====================  INQUIRY       =======================

        virtual inline std::string GetName () const {
            return std::string(this->CName);
        }

        protected:

        /**
         *  Performs a convex hull on the point cloud, uses a brute force approach
         */
        void ConvexHull();

        // ====================  LIFECYCLE     =======================

        /**
         * Default protected constructor, use NewSP methods to construct
         * @see DEMGrain::NewSP
         */
        DEMGrain ( );

        /**
         * Protected DeDerializing constructor, use factory DeSerialize  method.
         * @see DEMGrain::DeSerialize
         */
        DEMGrain (const YAML::Node& node);

        /** Default protected destructor, use smart pointers (std::shared_ptr) */
        ~DEMGrain ();

        // ====================  DATA MEMBERS  =========================

        private:

        static constexpr auto CName = "DEMGrain";

        /** The points defining the angular grain */
        Vector3Xr    Points;

        /** The connections between the points */
        MatrixXi    Connections;

    }; // -----  end of class  DEMGrain  -----
}  // -----  end of namespace Lemma ----

/* vim: set tabstop=4 expandtab: */
/* vim: set filetype=cpp: */


#endif   // ----- #ifndef DEMGRAIN_INC  -----