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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QCLIPPERUTILS_P_H
#define QCLIPPERUTILS_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
/*
* This file is intended to be include only in source files of
* QtPositioning/QtLocation. It is in QtPositioning to enable manipulation
* of geo polygons
*/
#include <QtPositioning/private/qpositioningglobal_p.h>
#include <QtCore/QtGlobal>
#include <QtCore/QList>
#include <QtPositioning/private/qdoublevector2d_p.h>
QT_BEGIN_NAMESPACE
/*
* This class provides a wrapper around the clip2tri library, so that
* we do not need to export any of the internal types. That is needed
* because after QtLocation and QtPositioning are moved to different
* repos, we need to use the features of the library in QtLocation without
* explicitly linking to it.
*/
class QClipperUtilsPrivate;
class Q_POSITIONING_EXPORT QClipperUtils
{
public:
QClipperUtils();
QClipperUtils(const QClipperUtils &other);
~QClipperUtils();
// Must be in sync with c2t::clip2tri::Operation
enum Operation {
Union,
Intersection,
Difference,
Xor
};
// Must be in sync with QtClipperLib::PolyFillType
enum PolyFillType {
pftEvenOdd,
pftNonZero,
pftPositive,
pftNegative
};
static double clipperScaleFactor();
static int pointInPolygon(const QDoubleVector2D &point, const QList<QDoubleVector2D> &polygon);
// wrap some useful non-static methods of c2t::clip2tri
void clearClipper();
void addSubjectPath(const QList<QDoubleVector2D> &path, bool closed);
void addClipPolygon(const QList<QDoubleVector2D> &path);
QList<QList<QDoubleVector2D>> execute(Operation op, PolyFillType subjFillType = pftNonZero,
PolyFillType clipFillType = pftNonZero);
// For optimization purposes. Set the polygon once and check for multiple
// points. Without the need to convert between Qt and clip2tri types
// every time
void setPolygon(const QList<QDoubleVector2D> &polygon);
int pointInPolygon(const QDoubleVector2D &point) const;
private:
QClipperUtilsPrivate *d_ptr;
};
QT_END_NAMESPACE
#endif // QCLIPPERUTILS_P_H
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