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tamaas/src/percolation/flood_fill.hh
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flood_fill.hh
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/*
* SPDX-License-Indentifier: AGPL-3.0-or-later
*
* Copyright (©) 2016-2022 EPFL (École Polytechnique Fédérale de Lausanne),
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
* Copyright (©) 2020-2022 Lucas Frérot
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef FLOOD_FILL_H
#define FLOOD_FILL_H
/* -------------------------------------------------------------------------- */
#include "grid.hh"
#include <list>
/* -------------------------------------------------------------------------- */
namespace tamaas {
/* -------------------------------------------------------------------------- */
template <UInt dim>
class Cluster {
using Point = std::array<Int, dim>;
using BBox = std::pair<std::array<Int, dim>, std::array<Int, dim>>;
public:
/// Constructor
Cluster(Point start, const Grid<bool, dim>& map, Grid<bool, dim>& visited,
bool diagonal);
/// Copy constructor
Cluster(const Cluster& other);
/// Default constructor
Cluster() = default;
/// Get area of cluster
UInt getArea() const { return getPoints().size(); }
/// Get perimeter of cluster
UInt getPerimeter() const { return perimeter; }
/// Get contact points
const auto& getPoints() const { return points; }
/// Get bounding box
BBox boundingBox() const;
/// Get bounding box extent
std::array<Int, dim> extent() const;
/// Assign next neighbors
auto getNextNeighbors(const std::array<Int, dim>& p);
/// Assign diagonal neighbors
auto getDiagonalNeighbors(const std::array<Int, dim>& p);
private:
/// List of points in the cluster
std::vector<Point> points;
/// Perimeter size (number of segments)
UInt perimeter = 0;
};
/* -------------------------------------------------------------------------- */
class FloodFill {
template <UInt dim>
using List = std::vector<Cluster<dim>>;
public:
/// Return a list of connected segments
static List<1> getSegments(const Grid<bool, 1>& map);
/// Return a list of connected areas
static List<2> getClusters(const Grid<bool, 2>& map, bool diagonal);
/// Return a list of connected volumes
static List<3> getVolumes(const Grid<bool, 3>& map, bool diagonal);
};
/* -------------------------------------------------------------------------- */
} // namespace tamaas
/* -------------------------------------------------------------------------- */
#endif // FLOOD_FILL_H
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