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// Copyright (C) 2018 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 QGEOTILEDMAPSCENE_P_P_H
#define QGEOTILEDMAPSCENE_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 "qgeotiledmapscene_p.h"
#include "qgeocameradata_p.h"
#include "qgeotilespec_p.h"
#include <QtQuick/QSGImageNode>
#include <QtQuick/QQuickWindow>
#include <QtCore/private/qobject_p.h>
#include <QtPositioning/private/qdoublevector3d_p.h>
QT_BEGIN_NAMESPACE
class Q_LOCATION_PRIVATE_EXPORT QGeoTiledMapTileContainerNode : public QSGTransformNode
{
public:
void addChild(const QGeoTileSpec &spec, QSGImageNode *node)
{
tiles.insert(spec, node);
appendChildNode(node);
}
QHash<QGeoTileSpec, QSGImageNode *> tiles;
};
class Q_LOCATION_PRIVATE_EXPORT QGeoTiledMapRootNode : public QSGClipNode
{
public:
QGeoTiledMapRootNode()
: isTextureLinear(false)
, geometry(QSGGeometry::defaultAttributes_Point2D(), 4)
, root(new QSGTransformNode())
, tiles(new QGeoTiledMapTileContainerNode())
, wrapLeft(new QGeoTiledMapTileContainerNode())
, wrapRight(new QGeoTiledMapTileContainerNode())
{
setIsRectangular(true);
setGeometry(&geometry);
root->appendChildNode(tiles);
root->appendChildNode(wrapLeft);
root->appendChildNode(wrapRight);
appendChildNode(root);
}
~QGeoTiledMapRootNode()
{
qDeleteAll(textures);
}
void setClipRect(const QRect &rect)
{
if (rect != clipRect) {
QSGGeometry::updateRectGeometry(&geometry, rect);
QSGClipNode::setClipRect(rect);
clipRect = rect;
markDirty(DirtyGeometry);
}
}
void updateTiles(QGeoTiledMapTileContainerNode *root,
QGeoTiledMapScenePrivate *d,
double camAdjust,
QQuickWindow *window);
bool isTextureLinear;
QSGGeometry geometry;
QRect clipRect;
QSGTransformNode *root;
QGeoTiledMapTileContainerNode *tiles; // The majority of the tiles
QGeoTiledMapTileContainerNode *wrapLeft; // When zoomed out, the tiles that wrap around on the left.
QGeoTiledMapTileContainerNode *wrapRight; // When zoomed out, the tiles that wrap around on the right
QHash<QGeoTileSpec, QSGTexture *> textures;
#ifdef QT_LOCATION_DEBUG
double m_sideLengthPixel;
QMap<double, QList<QGeoTileSpec>> m_droppedTiles;
#endif
};
class Q_LOCATION_PRIVATE_EXPORT QGeoTiledMapScenePrivate : public QObjectPrivate
{
Q_DECLARE_PUBLIC(QGeoTiledMapScene)
public:
QGeoTiledMapScenePrivate();
~QGeoTiledMapScenePrivate();
void addTile(const QGeoTileSpec &spec, QSharedPointer<QGeoTileTexture> texture);
void setVisibleTiles(const QSet<QGeoTileSpec> &visibleTiles);
void removeTiles(const QSet<QGeoTileSpec> &oldTiles);
bool buildGeometry(const QGeoTileSpec &spec, QSGImageNode *imageNode, bool &overzooming);
void updateTileBounds(const QSet<QGeoTileSpec> &tiles);
void setupCamera();
inline bool isTiltedOrRotated() const { return (m_cameraData.tilt() > 0.0) || (m_cameraData.bearing() > 0.0); }
public:
QSize m_screenSize; // in pixels
int m_tileSize = 0; // the pixel resolution for each tile
QGeoCameraData m_cameraData;
QRectF m_visibleArea;
QSet<QGeoTileSpec> m_visibleTiles;
QDoubleVector3D m_cameraUp;
QDoubleVector3D m_cameraEye;
QDoubleVector3D m_cameraCenter;
QMatrix4x4 m_projectionMatrix;
// scales up the tile geometry and the camera altitude, resulting in no visible effect
// other than to control the accuracy of the render by keeping the values in a sensible range
double m_scaleFactor =
#ifdef QT_LOCATION_DEBUG
1.0;
#else
10.0;
#endif
// rounded down, positive zoom is zooming in, corresponding to reduced altitude
int m_intZoomLevel = 0;
// mercatorToGrid transform
// the number of tiles in each direction for the whole map (earth) at the current zoom level.
// it is 1<<zoomLevel
int m_sideLength = 0;
QHash<QGeoTileSpec, QSharedPointer<QGeoTileTexture> > m_textures;
QList<QGeoTileSpec> m_updatedTextures;
// tilesToGrid transform
int m_minTileX = -1; // the minimum tile index, i.e. 0 to sideLength which is 1<< zoomLevel
int m_minTileY = -1;
int m_maxTileX = -1;
int m_maxTileY = -1;
int m_tileXWrapsBelow = 0; // the wrap point as a tile index
bool m_linearScaling = false;
bool m_dropTextures = false;
#ifdef QT_LOCATION_DEBUG
double m_sideLengthPixel;
QGeoTiledMapRootNode *m_mapRoot = nullptr;
#endif
};
QT_END_NAMESPACE
#endif // QGEOTILEDMAPSCENE_P_P_H
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