File indexing completed on 2024-04-21 03:50:44 

0001 #ifndef NWWMAPIMAGE_H
0002 #define NWWMAPIMAGE_H
0003 
0004 #include "mapreproject.h"
0005 #include "ReadOnlyMapImage.h"
0006 
0007 #include <QCache>
0008 #include <QDir>
0009 #include <QPair>
0010 #include <QSet>
0011 #include <QColor>
0012 #include <QImage>
0013 
0014 class InterpolationMethod;
0015 
0016 class NwwMapImage: public ReadOnlyMapImage
0017 {
0018 public:
0019     NwwMapImage( QDir const & baseDirectory, int const tileLevel );
0020 
0021     QRgb pixel( double const lonRad, double const latRad ) override;
0022     QRgb pixel( int const x, int const y ) override;
0023 
0024     void setBaseDirectory( QDir const & baseDirectory );
0025     void setCacheSizeBytes( int const cacheSizeBytes );
0026     void setInterpolationMethod( InterpolationMethod * const method ) override;
0027     void setTileLevel( int const level );
0028 
0029 private:
0030     enum { DefaultCacheSizeBytes = 32 * 1024 * 1024 };
0031 
0032     static int tileId( int const tileX, int const tileY );
0033     QPair<QImage, bool> tile( int const tileX, int const tileY );
0034     double lonRadToPixelX( double const lonRad ) const;
0035     double latRadToPixelY( double const latRad ) const;
0036 
0037     // Interpolation methods
0038     QRgb nearestNeighbor( double const x, double const y );
0039     QRgb bilinearInterpolation( double const x, double const y );
0040 
0041     int const m_tileEdgeLengthPixel;
0042     QRgb const m_emptyPixel;
0043 
0044     QDir m_baseDirectory;
0045     int m_tileLevel;
0046     int m_mapWidthTiles;
0047     int m_mapHeightTiles;
0048     int m_mapWidthPixel;
0049     int m_mapHeightPixel;
0050 
0051 
0052     InterpolationMethod * m_interpolationMethod;
0053 
0054     QSet<int> m_tileMissing;
0055     QCache<int, QImage> m_tileCache;
0056 };
0057 
0058 #endif