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+/****************************************************************************
+**
+** Copyright (C) 2018 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QGEOCAMERATILES_P_P_H
+#define QGEOCAMERATILES_P_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.
+//
+
+#include "qgeocameratiles_p.h"
+#include <QtPositioning/private/qwebmercator_p.h>
+#include <QtPositioning/private/qdoublevector2d_p.h>
+#include <QtPositioning/private/qdoublevector3d_p.h>
+#include "qgeomaptype_p.h"
+#include "qgeocameradata_p.h"
+#include "qgeotilespec_p.h"
+
+#include <QtCore/qvector.h>
+#include <QtCore/qset.h>
+
+QT_BEGIN_NAMESPACE
+
+struct Q_LOCATION_PRIVATE_EXPORT Frustum
+{
+ QDoubleVector3D apex;
+ QDoubleVector3D topLeftNear;
+ QDoubleVector3D topLeftFar;
+ QDoubleVector3D topRightNear;
+ QDoubleVector3D topRightFar;
+ QDoubleVector3D bottomLeftNear;
+ QDoubleVector3D bottomLeftFar;
+ QDoubleVector3D bottomRightNear;
+ QDoubleVector3D bottomRightFar;
+};
+
+typedef QVector<QDoubleVector3D> PolygonVector;
+
+class Q_LOCATION_PRIVATE_EXPORT QGeoCameraTilesPrivate
+{
+public:
+ struct ClippedFootprint
+ {
+ ClippedFootprint()
+ {}
+ ClippedFootprint(const PolygonVector &left_, const PolygonVector &mid_, const PolygonVector &right_)
+ : left(left_), mid(mid_), right(right_)
+ {}
+ PolygonVector left;
+ PolygonVector mid;
+ PolygonVector right;
+ };
+
+ struct TileMap
+ {
+ TileMap();
+
+ void add(int tileX, int tileY);
+
+ QMap<int, QPair<int, int> > data;
+ };
+
+ QGeoCameraTilesPrivate();
+ ~QGeoCameraTilesPrivate();
+
+
+ void updateMetadata();
+ void updateGeometry();
+
+ Frustum createFrustum(double viewExpansion) const;
+ PolygonVector frustumFootprint(const Frustum &frustum) const;
+
+ QPair<PolygonVector, PolygonVector> splitPolygonAtAxisValue(const PolygonVector &polygon, int axis, double value) const;
+ ClippedFootprint clipFootprintToMap(const PolygonVector &footprint) const;
+
+ QList<QPair<double, int> > tileIntersections(double p1, int t1, double p2, int t2) const;
+ QSet<QGeoTileSpec> tilesFromPolygon(const PolygonVector &polygon) const;
+
+ static QGeoCameraTilesPrivate *get(QGeoCameraTiles *o) {
+ return o->d_ptr.data();
+ }
+
+public:
+ QString m_pluginString;
+ QGeoMapType m_mapType;
+ int m_mapVersion;
+ QGeoCameraData m_camera;
+ QSize m_screenSize;
+ QRectF m_visibleArea;
+ int m_tileSize;
+ QSet<QGeoTileSpec> m_tiles;
+
+ int m_intZoomLevel;
+ int m_sideLength;
+ bool m_dirtyGeometry;
+ bool m_dirtyMetadata;
+ double m_viewExpansion;
+
+#ifdef QT_LOCATION_DEBUG
+ // updateGeometry
+ ClippedFootprint m_clippedFootprint;
+ PolygonVector m_frustumFootprint;
+ Frustum m_frustum;
+
+ // createFrustum
+ mutable QDoubleVector3D m_createFrustum_center;
+ mutable QDoubleVector3D m_createFrustum_eye;
+#endif
+};
+
+QT_END_NAMESPACE
+
+#endif // QGEOCAMERATILES_P_P_H