DEM/src/DEMGrain.cpp

/* 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 02:11:21 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
 */


#include "DEMGrain.h"

namespace Lemma {

    // ====================  FRIEND METHODS  =====================

    std::ostream &operator << (std::ostream &stream, const DEMGrain &ob) {
        stream << ob.Serialize()  << "\n---\n"; // End of doc --- as a direct stream should encapulste thingy
        return stream;
    }

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

    //--------------------------------------------------------------------------------------
    //       Class:  DEMGrain
    //      Method:  DEMGrain
    // Description:  constructor (protected)
    //--------------------------------------------------------------------------------------
    DEMGrain::DEMGrain ( ) : DEMParticle( ) {

    }  // -----  end of method DEMGrain::DEMGrain  (constructor)  -----

    //--------------------------------------------------------------------------------------
    //       Class:  DEMGrain
    //      Method:  DEMGrain
    // Description:  DeSerializing constructor (protected)
    //--------------------------------------------------------------------------------------
    DEMGrain::DEMGrain (const YAML::Node& node) : DEMParticle(node) {
        Points = node["Points"].as<Vector3Xr>( );

    }  // -----  end of method DEMGrain::DEMGrain  (constructor)  -----

    //--------------------------------------------------------------------------------------
    //       Class:  DEMGrain
    //      Method:  NewSP()
    // Description:  public constructor returing a shared_ptr
    //--------------------------------------------------------------------------------------
    std::shared_ptr< DEMGrain >  DEMGrain::NewSP() {
        std::shared_ptr< DEMGrain > sp(new  DEMGrain( ), LemmaObjectDeleter() );
        return sp;
    }

    //--------------------------------------------------------------------------------------
    //       Class:  DEMGrain
    //      Method:  ~DEMGrain
    // Description:  destructor (protected)
    //--------------------------------------------------------------------------------------
    DEMGrain::~DEMGrain () {

    }  // -----  end of method DEMGrain::~DEMGrain  (destructor)  -----

    //--------------------------------------------------------------------------------------
    //       Class:  DEMGrain
    //      Method:  Serialize
    //--------------------------------------------------------------------------------------
    YAML::Node  DEMGrain::Serialize (  ) const {
        YAML::Node node = DEMParticle::Serialize();
        node.SetTag( GetName() );
        // FILL IN CLASS SPECIFICS HERE
        node["Points"] = Points;
        return node;
    }		// -----  end of method DEMGrain::Serialize  -----

    //--------------------------------------------------------------------------------------
    //       Class:  DEMGrain
    //      Method:  DeSerialize
    //--------------------------------------------------------------------------------------
    std::shared_ptr<DEMGrain> DEMGrain::DeSerialize ( const YAML::Node& node  ) {
        if (node.Tag() !=  "DEMGrain" ) {
            throw  DeSerializeTypeMismatch( "DEMGrain", node.Tag());
        }
        std::shared_ptr< DEMGrain > Object(new DEMGrain(node), LemmaObjectDeleter() );
        return Object ;
    }		// -----  end of method DEMGrain::DeSerialize  -----


    //--------------------------------------------------------------------------------------
    //       Class:  DEMGrain
    //      Method:  RandomPointBuild
    //--------------------------------------------------------------------------------------
    void DEMGrain::RandomPointCloud ( const int& npoints, const Real& sigma ) {

        Points.resize( Eigen::NoChange, npoints );
        std::mt19937 eng(time(NULL));
        std::normal_distribution<Real> normalx(GetCentreMass(0), sigma);
        std::normal_distribution<Real> normaly(GetCentreMass(1), sigma);
        std::normal_distribution<Real> normalz(GetCentreMass(2), sigma);
        std::cout.precision(12);
        for(int i=0; i < npoints; ++i) {
            Points(0, i) = normalx(eng);
            Points(1, i) = normaly(eng);
            Points(2, i) = normalz(eng);
        }
        ConvexHull();
        return ;
    }		// -----  end of method DEMGrain::RandomPoints  -----



    //--------------------------------------------------------------------------------------
    //       Class:  DEMGrain
    //      Method:  ConvexHull
    //--------------------------------------------------------------------------------------
    void DEMGrain::ConvexHull (  ) {

        //for ( auto point : Points.rowwise() ) {
        // Brute force algorithm (O(n^3))
        for (int icol=0; icol<Points.cols(); ++icol) {
            std::cout << Points.col(icol) << std::endl;
        }


        return ;
    }		// -----  end of method DEMGrain::ConvexHull  -----

} // ----  end of namespace Lemma  ----

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