CPolygon.h

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          http://www.mrpt.org/                          |
   |                                                                        |
   | Copyright (c) 2005-2018, Individual contributors, see AUTHORS file     |
   | See: http://www.mrpt.org/Authors - All rights reserved.                |
   | Released under BSD License. See details in http://www.mrpt.org/License |
   +------------------------------------------------------------------------+ */
#pragma once

#include <mrpt/serialization/CSerializable.h>
#include <mrpt/math/lightweight_geom_data.h>

namespace mrpt::math
{
/** A wrapper of a TPolygon2D class, implementing CSerializable.
 * \ingroup geometry_grp
 */
class CPolygon : public mrpt::serialization::CSerializable,
                 public mrpt::math::TPolygon2D
{
    DEFINE_SERIALIZABLE(CPolygon)

   public:
    /** Default constructor (empty polygon, 0 vertices) */
    CPolygon() : TPolygon2D() {}
    /** Add a new vertex to polygon */
    void AddVertex(double x, double y)
    {
        TPolygon2D::push_back(TPoint2D(x, y));
    }

    /** Methods for accessing the vertices \sa verticesCount */
    double GetVertex_x(size_t i) const
    {
        ASSERT_(i < TPolygon2D::size());
        return TPolygon2D::operator[](i).x;
    }
    double GetVertex_y(size_t i) const
    {
        ASSERT_(i < TPolygon2D::size());
        return TPolygon2D::operator[](i).y;
    }

    /** Returns the vertices count in the polygon: */
    size_t verticesCount() const { return TPolygon2D::size(); }
    /** Set all vertices at once. */
    void setAllVertices(
        const std::vector<double>& x, const std::vector<double>& y);
    /** Set all vertices at once. Please use the std::vector version whenever
     * possible unless efficiency is really an issue */
    void setAllVertices(size_t nVertices, const double* xs, const double* ys);
    /** Set all vertices at once. Please use the std::vector version whenever
     * possible unless efficiency is really an issue */
    void setAllVertices(size_t nVertices, const float* xs, const float* ys);

    /** Get all vertices at once */
    void getAllVertices(std::vector<double>& x, std::vector<double>& y) const;

    /** Clear the polygon, erasing all vertices */
    void Clear() { TPolygon2D::clear(); }
    /** Check if a point is inside the polygon */
    bool PointIntoPolygon(double x, double y) const
    {
        return TPolygon2D::contains(TPoint2D(x, y));
    }
};

}