polygon.h

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#ifndef POLYGON_H
#define POLYGON_H

#include <QVector2D>
#include <QVector>
#include <QLineF>
#include <QRectF>
#include <QPolygonF>

#include "triplet.h"

class BetterPolygon
{
public:
    BetterPolygon() {}
    BetterPolygon(const QVector<QPointF> &points);
    BetterPolygon(const QPolygonF &polygon);

    bool isValid() const;

    bool chordIsClear(int ind1, int ind2) const;

    bool connectionIsClear(const BetterPolygon &other, int pointOnThis, int pointOnOther) const;

    bool overlaps(const BetterPolygon &other) const;

    QPair<BetterPolygon, BetterPolygon> splitPolygon() const;

    QPair<BetterPolygon, BetterPolygon> splitPolygon(QPair<int, int> chord) const;

    QList<Triplet<QPointF, QPointF, QPointF>> triangulate() const;

    QVector<BetterPolygon> subtract(const BetterPolygon &other) const;
    QVector<BetterPolygon> intersect(const BetterPolygon &other) const;
    QVector<BetterPolygon> united(const BetterPolygon &other) const;

    const QVector<QPointF> &points() const { return mPolygon; }
    QVector<QPointF> &points() { return mPolygon; }

    void translate(const QPointF &p) { mPolygon.translate(p); }
    void translate(float x, float y) { mPolygon.translate(x, y); }

private:
    QPolygonF mPolygon;
};

#endif // POLYGON_H