glm::dvec4 MercatorProjection::TileLonLatBounds(const TileID _tileCoord) const {
glm::dvec2 boundMin, boundMax;
glm::dvec4 tileBounds, lonLatBounds;
tileBounds = TileBounds(_tileCoord);
boundMin = MetersToLonLat(glm::dvec2(tileBounds.x, tileBounds.y));
boundMax = MetersToLonLat(glm::dvec2(tileBounds.z, tileBounds.w));
lonLatBounds = glm::dvec4(boundMin.x, boundMin.y, boundMax.x, boundMax.y);
return lonLatBounds;
}
//-------------------------------------------------------------------------
//
// Convert tile center plus pixel offset to lat/lon. Offset increases right and down
//
LonLat OpenStreetMapSource::tileCenterToLonLat( const int tileSize, const MapTileCoordinate& tile, const double offsetX, const double offsetY )
//-------------------------------------------------------------------------
{
double meterX, meterY;
double pixelX, pixelY;
TileCenterPixels( tileSize, tile.getX( ), tile.getY( ), pixelX, pixelY );
pixelX += offsetX;
pixelY += offsetY;
PixelsToMeters( pixelX, pixelY, tile.getMagnification( ), meterX, meterY );
double lon, lat;
MetersToLonLat( meterX, meterY, lon, lat );
return LonLat( lon, lat );
}
//-------------------------------------------------------------------------
//
// Convert tile center plus pixel offset to lat/lon. Offset increases right and down
//
LonLat GoogleMapSource::tileCenterToLonLat( const int tileSize, const MapTileCoordinate& tile, const double offsetX, const double offsetY )
//-------------------------------------------------------------------------
{
double meterX, meterY;
TileCenter( getTileSize( ), tile.getX( ), tile.getY( ), tile.getMagnification( ), meterX, meterY );
double pixelX, pixelY;
MetersToPixels( meterX, meterY, tile.getMagnification( ), pixelX, pixelY );
pixelX += offsetX;
pixelY -= offsetY; // google maps y coords increase up
PixelsToMeters( pixelX, pixelY, tile.getMagnification( ), meterX, meterY );
double lon, lat;
MetersToLonLat( meterX, meterY, lon, lat );
return LonLat( lon, lat );
}
