/****************************************************************************
 Copyright (C) 2010-2012 the Office National des Forêts (ONF), France
                         All rights reserved.

 Contact : alexandre.piboule@onf.fr

 Developers : Alexandre PIBOULE (ONF)

 This file is part of PluginONF library.

 PluginONF is free library: 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 3 of the License, or
 (at your option) any later version.

 PluginONF 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 Lesser General Public License
 along with PluginONF.  If not, see <http://www.gnu.org/licenses/lgpl.html>.
*****************************************************************************/

#include "onf_steprefpointfrombarycenter02.h"

ONF_StepRefPointFromBarycenter02::ONF_StepRefPointFromBarycenter02() : SuperClass()
{
}

QString ONF_StepRefPointFromBarycenter02::description() const
{
    return tr("Créer des points de référence à partir de barycentres");
}

QString ONF_StepRefPointFromBarycenter02::detailledDescription() const
{
    return tr("");
}

QString ONF_StepRefPointFromBarycenter02::inputDescription() const
{
    return SuperClass::inputDescription() + tr("<br><br>");
}

QString ONF_StepRefPointFromBarycenter02::outputDescription() const
{
    return SuperClass::outputDescription() + tr("<br><br>");
}

QString ONF_StepRefPointFromBarycenter02::detailsDescription() const
{
    return tr("");
}

CT_VirtualAbstractStep* ONF_StepRefPointFromBarycenter02::createNewInstance() const
{
    // cree une copie de cette etape
    return new ONF_StepRefPointFromBarycenter02();
}

//////////////////// PROTECTED //////////////////

void ONF_StepRefPointFromBarycenter02::declareInputModels(CT_StepInModelStructureManager& manager)
{
    manager.addResult(_inResult, tr("Polyligne(s)"));
    manager.setZeroOrMoreRootGroup(_inResult, _inZeroOrMoreRootGroup);
    manager.addGroup(_inZeroOrMoreRootGroup, _inGroup);
    manager.addItem(_inGroup, _inPolyline, tr("Polyligne"));
}

void ONF_StepRefPointFromBarycenter02::declareOutputModels(CT_StepOutModelStructureManager& manager)
{
    manager.addResultCopy(_inResult);
    manager.addItem(_inGroup, _outBarycenter, tr("Barycentre"));
}

void ONF_StepRefPointFromBarycenter02::compute()
{
    for (CT_StandardItemGroup* group : _inGroup.iterateOutputs(_inResult))
    {
        if (isStopped()) {return;}

        const CT_PointCluster* item = group->singularItem(_inPolyline);

        if(item != nullptr)
        {
            group->addSingularItem(_outBarycenter, ONF_StepRefPointFromBarycenter02::getBarycenter(item));
        }
    }
}

CT_ReferencePoint* ONF_StepRefPointFromBarycenter02::getBarycenter(const CT_PointCluster *item)
{
    const CT_PointClusterBarycenter barycentre = item->getBarycenter();

    // coordonnées du barycentre
    double xref = barycentre.x();
    double yref = barycentre.y();
    double zref = barycentre.z();

    // calcul du bufferXY
    // Maximum de la distance point/refPoint pour chaque segment
    double buffer = 0;

    CT_PointIterator itPt(item->pointCloudIndex());
    while (itPt.hasNext())
    {
        const CT_Point &point = itPt.next().currentPoint();
        double distance = pow(xref-point(0), 2) + pow(yref-point(1), 2);
        if (distance > buffer) {buffer = distance;}
    }
    if (buffer > 0) {buffer = sqrt(buffer);}

    // et on ajoute un referencePoint
    return new CT_ReferencePoint(xref, yref, zref, buffer);
}