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diff --git a/src/location/declarativemaps/qdeclarativegeomapitemutils.cpp b/src/location/declarativemaps/qdeclarativegeomapitemutils.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2020 Paolo Angelelli <paolo.angelelli@gmail.com>
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtLocation module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdeclarativegeomapitemutils_p.h"
+#include <QtPositioning/private/qdoublevector3d_p.h>
+#include <QtPositioning/private/qdoublematrix4x4_p.h>
+#include <QtPositioning/QGeoCoordinate>
+#include <QPointF>
+#include <QMatrix4x4>
+#include <QPainterPath>
+#include <QPainterPathStroker>
+#include <QtGui/private/qvectorpath_p.h>
+#include <QtGui/private/qtriangulatingstroker_p.h>
+#include <QtGui/private/qtriangulator_p.h>
+#include <QtPositioning/private/qclipperutils_p.h>
+
+QT_BEGIN_NAMESPACE
+
+void QDeclarativeGeoMapItemUtils::wrapPath(const QList<QGeoCoordinate> &perimeter,
+ const QGeoCoordinate &geoLeftBound,
+ const QGeoProjectionWebMercator &p,
+ QList<QDoubleVector2D> &wrappedPath,
+ QList<QDoubleVector2D> &wrappedPathMinus1,
+ QList<QDoubleVector2D> &wrappedPathPlus1,
+ QDoubleVector2D *leftBoundWrapped)
+{
+ QList<QDoubleVector2D> path;
+ for (const QGeoCoordinate &c : perimeter)
+ path << p.geoToMapProjection(c);
+ const QDoubleVector2D leftBound = p.geoToMapProjection(geoLeftBound);
+ wrappedPath.clear();
+ wrappedPathPlus1.clear();
+ wrappedPathMinus1.clear();
+ // compute 3 sets of "wrapped" coordinates: one w regular mercator, one w regular mercator +- 1.0
+ for (int i = 0; i < path.size(); ++i) {
+ QDoubleVector2D coord = path.at(i);
+
+ // We can get NaN if the map isn't set up correctly, or the projection
+ // is faulty -- probably best thing to do is abort
+ if (!qIsFinite(coord.x()) || !qIsFinite(coord.y()))
+ return;
+
+ const bool isPointLessThanUnwrapBelowX = (coord.x() < leftBound.x());
+ // unwrap x to preserve geometry if moved to border of map
+ if (isPointLessThanUnwrapBelowX)
+ coord.setX(coord.x() + 1.0);
+
+ QDoubleVector2D coordP1(coord.x() + 1.0, coord.y());
+ QDoubleVector2D coordM1(coord.x() - 1.0, coord.y());
+
+ wrappedPath.append(coord);
+ wrappedPathPlus1.append(coordP1);
+ wrappedPathMinus1.append(coordM1);
+ }
+ if (leftBoundWrapped)
+ *leftBoundWrapped = leftBound;
+}
+
+void QDeclarativeGeoMapItemUtils::wrapPath(const QList<QGeoCoordinate> &perimeter,
+ const QGeoCoordinate &geoLeftBound,
+ const QGeoProjectionWebMercator &p,
+ QList<QDoubleVector2D> &wrappedPath,
+ QDoubleVector2D *leftBoundWrapped)
+{
+ QList<QDoubleVector2D> path;
+ for (const QGeoCoordinate &c : perimeter)
+ path << p.geoToMapProjection(c);
+ const QDoubleVector2D leftBound = p.geoToMapProjection(geoLeftBound);
+ wrapPath(path, leftBound,wrappedPath);
+ if (leftBoundWrapped)
+ *leftBoundWrapped = leftBound;
+}
+
+void QDeclarativeGeoMapItemUtils::wrapPath(const QList<QDoubleVector2D> &path,
+ const QDoubleVector2D &geoLeftBound,
+ QList<QDoubleVector2D> &wrappedPath)
+{
+ wrappedPath.clear();
+ // compute 3 sets of "wrapped" coordinates: one w regular mercator, one w regular mercator +- 1.0
+ for (int i = 0; i < path.size(); ++i) {
+ QDoubleVector2D coord = path.at(i);
+
+ // We can get NaN if the map isn't set up correctly, or the projection
+ // is faulty -- probably best thing to do is abort
+ if (!qIsFinite(coord.x()) || !qIsFinite(coord.y()))
+ return;
+
+ const bool isPointLessThanUnwrapBelowX = (coord.x() < geoLeftBound.x());
+ // unwrap x to preserve geometry if moved to border of map
+ if (isPointLessThanUnwrapBelowX)
+ coord.setX(coord.x() + 1.0);
+
+ wrappedPath.append(coord);
+ }
+}
+
+void QDeclarativeGeoMapItemUtils::clipPolygon(const QList<QDoubleVector2D> &wrappedPath, const QGeoProjectionWebMercator &p, QList<QList<QDoubleVector2D> > &clippedPaths, QDoubleVector2D *leftBoundWrapped, const bool closed)
+{
+ // 2) Clip bounding box
+ clippedPaths.clear();
+ const QList<QDoubleVector2D> &visibleRegion = p.projectableGeometry();
+ if (visibleRegion.size()) {
+ c2t::clip2tri clipper;
+ clipper.addSubjectPath(QClipperUtils::qListToPath(wrappedPath), closed);
+ clipper.addClipPolygon(QClipperUtils::qListToPath(visibleRegion));
+ Paths res = clipper.execute(c2t::clip2tri::Intersection, QtClipperLib::pftEvenOdd, QtClipperLib::pftEvenOdd);
+ clippedPaths = QClipperUtils::pathsToQList(res);
+
+ if (leftBoundWrapped) {
+ // 2.1) update srcOrigin_ and leftBoundWrapped with the point with minimum X
+ QDoubleVector2D lb(qInf(), qInf());
+ for (const QList<QDoubleVector2D> &path: clippedPaths)
+ for (const QDoubleVector2D &p: path)
+ if (p.x() < lb.x() || (p.x() == lb.x() && p.y() < lb.y()))
+ // y-minimization needed to find the same point on polygon and border
+ lb = p;
+
+ if (qIsInf(lb.x())) // e.g., when the polygon is clipped entirely
+ return;
+
+ // 2.2) Prevent the conversion to and from clipper from introducing tiny negative offsets which,
+ // in turn will make the geometry wrap around.
+ lb.setX(qMax(leftBoundWrapped->x(), lb.x()));
+
+ *leftBoundWrapped = lb;
+ // srcOrigin_ = p.mapProjectionToGeo(p.unwrapMapProjection(lb));
+ }
+ } else {
+ clippedPaths.append(wrappedPath);
+ }
+}
+
+void QDeclarativeGeoMapItemUtils::projectBbox(const QList<QDoubleVector2D> &clippedBbox, const QGeoProjectionWebMercator &p, QPainterPath &projectedBbox)
+{
+ projectedBbox = QPainterPath(); // clear() is added in 5.13..
+ for (int i = 0; i < clippedBbox.size(); ++i) {
+ QDoubleVector2D point = p.wrappedMapProjectionToItemPosition(clippedBbox.at(i));
+ if (i == 0)
+ projectedBbox.moveTo(point.toPointF());
+ else
+ projectedBbox.lineTo(point.toPointF());
+ }
+ projectedBbox.closeSubpath();
+}
+
+QT_END_NAMESPACE