// SPDX-License-Identifier: LGPL-2.1-or-later
/***************************************************************************
 *   Copyright (c) 2020 sliptonic <shopinthewoods@gmail.com>               *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License as published by the Free Software Foundation; either          *
 *   version 2 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 Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this library; see the file COPYING.LIB. If not,    *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 *   Suite 330, Boston, MA  02111-1307, USA                                *
 *                                                                         *
 ***************************************************************************/


#include "VoronoiCell.h"


using namespace Base;
using namespace Path;

TYPESYSTEM_SOURCE(Path::VoronoiCell, Base::Persistence)

VoronoiCell::VoronoiCell(Voronoi::diagram_type* d, long index)
    : dia(d)
    , index(index)
    , ptr(nullptr)
{
    if (dia && long(dia->num_cells()) > index) {
        ptr = &(dia->cells()[index]);
    }
}

VoronoiCell::VoronoiCell(Voronoi::diagram_type* d, const Voronoi::diagram_type::cell_type* e)
    : dia(d)
    , index(Voronoi::InvalidIndex)
    , ptr(e)
{
    if (d && e) {
        index = dia->index(e);
    }
}

VoronoiCell::~VoronoiCell()
{}

bool VoronoiCell::isBound() const
{
    if (ptr && dia.isValid() && index != Voronoi::InvalidIndex) {
        if (&(dia->cells()[index]) == ptr) {
            return true;
        }
    }
    ptr = nullptr;
    return false;
}

Voronoi::point_type VoronoiCell::sourcePoint() const
{
    int index = ptr->source_index();
    int category = ptr->source_category();
    if (category == boost::polygon::SOURCE_CATEGORY_SINGLE_POINT) {
        return dia->points[index];
    }
    if (category == boost::polygon::SOURCE_CATEGORY_SEGMENT_START_POINT) {
        return low(dia->segments[index - dia->points.size()]);
    }
    else {
        return high(dia->segments[index - dia->points.size()]);
    }
}

Voronoi::segment_type VoronoiCell::sourceSegment() const
{
    return dia->segments[ptr->source_index() - dia->points.size()];
}