diff options
Diffstat (limited to 'src/location/maps/qgeocameratiles.cpp')
| -rw-r--r-- | src/location/maps/qgeocameratiles.cpp | 90 |
1 files changed, 19 insertions, 71 deletions
diff --git a/src/location/maps/qgeocameratiles.cpp b/src/location/maps/qgeocameratiles.cpp index b7eac306..3a2732b2 100644 --- a/src/location/maps/qgeocameratiles.cpp +++ b/src/location/maps/qgeocameratiles.cpp @@ -34,6 +34,7 @@ ** ****************************************************************************/ #include "qgeocameratiles_p.h" +#include "qgeocameratiles_p_p.h" #include "qgeocameradata_p.h" #include "qgeotilespec_p.h" #include "qgeomaptype_p.h" @@ -63,76 +64,6 @@ static QDoubleVector3D toDoubleVector3D(const QVector3D& in) QT_BEGIN_NAMESPACE -struct Frustum -{ - QDoubleVector3D apex; - QDoubleVector3D topLeftNear; - QDoubleVector3D topLeftFar; - QDoubleVector3D topRightNear; - QDoubleVector3D topRightFar; - QDoubleVector3D bottomLeftNear; - QDoubleVector3D bottomLeftFar; - QDoubleVector3D bottomRightNear; - QDoubleVector3D bottomRightFar; -}; - -typedef QVector<QDoubleVector3D> PolygonVector; - -class QGeoCameraTilesPrivate -{ -public: - QGeoCameraTilesPrivate(); - ~QGeoCameraTilesPrivate(); - - 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; - void updateMetadata(); - void updateGeometry(); - - Frustum createFrustum(double viewExpansion) const; - - struct ClippedFootprint - { - ClippedFootprint(const PolygonVector &left_, const PolygonVector &mid_, const PolygonVector &right_) - : left(left_), mid(mid_), right(right_) - {} - PolygonVector left; - PolygonVector mid; - PolygonVector right; - }; - - 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; - - struct TileMap - { - TileMap(); - - void add(int tileX, int tileY); - - QMap<int, QPair<int, int> > data; - }; -}; - QGeoCameraTiles::QGeoCameraTiles() : d_ptr(new QGeoCameraTilesPrivate()) {} @@ -277,12 +208,22 @@ void QGeoCameraTilesPrivate::updateGeometry() // Find the frustum from the camera / screen / viewport information // The larger frustum when stationary is a form of prefetching Frustum f = createFrustum(m_viewExpansion); +#ifdef QT_LOCATION_DEBUG + m_frustum = f; +#endif // Find the polygon where the frustum intersects the plane of the map PolygonVector footprint = frustumFootprint(f); +#ifdef QT_LOCATION_DEBUG + m_frustumFootprint = footprint; +#endif // Clip the polygon to the map, split it up if it cross the dateline ClippedFootprint polygons = clipFootprintToMap(footprint); +#ifdef QT_LOCATION_DEBUG + m_clippedFootprint = polygons; +#endif + if (!polygons.left.isEmpty()) { QSet<QGeoTileSpec> tilesLeft = tilesFromPolygon(polygons.left); @@ -306,6 +247,10 @@ Frustum QGeoCameraTilesPrivate::createFrustum(double viewExpansion) const if (m_camera.fieldOfView() != 90.0) //aperture(90 / 2) = 1 apertureSize = tan(QLocationUtils::radians(m_camera.fieldOfView()) * 0.5); QDoubleVector3D center = m_sideLength * QWebMercator::coordToMercator(m_camera.center()); +#ifdef QT_LOCATION_DEBUG + m_createFrustum_center = center; +#endif + double f = m_screenSize.height(); @@ -335,7 +280,7 @@ Frustum QGeoCameraTilesPrivate::createFrustum(double viewExpansion) const side = QDoubleVector3D::normal(view, QDoubleVector3D(0.0, 1.0, 0.0)); up = QDoubleVector3D::normal(view, side2); - double nearPlane = 1 / (4.0 * m_tileSize ); + double nearPlane = 1.0 / 32.0; // The denominator used to be (4.0 * m_tileSize ), which produces an extremely narrow and tiny near plane. // farPlane plays a role on how much gets clipped when the map gets tilted. It used to be altitude + 1.0 // The value of 8.0 has been chosen as an acceptable compromise. // TODO: use m_camera.clipDistance(); when this will be introduced @@ -367,6 +312,9 @@ Frustum QGeoCameraTilesPrivate::createFrustum(double viewExpansion) const Frustum frustum; frustum.apex = eye; +#ifdef QT_LOCATION_DEBUG + m_createFrustum_eye = eye; +#endif QRectF va = m_visibleArea; if (va.isNull()) |