YahooSource Class Reference

Inheritance diagram for YahooSource:

Collaboration diagram for YahooSource:

List of all members.

Public Member Functions
	YahooSource (const TileSourceOptions &options)
void	initialize (const std::string &referenceURI, const Profile *overrideProfile)
osg::Image *	createImage (const TileKey &key, ProgressCallback *progress)
osg::HeightField *	createHeightField (const TileKey &key, ProgressCallback *progress)
virtual std::string	getExtension () const
virtual bool	supportsPersistentCaching () const
Private Attributes
const YahooOptions	_options

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Detailed Description

Definition at line 36 of file ReaderWriterYahoo.cpp.

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Constructor & Destructor Documentation

YahooSource::YahooSource

(

const TileSourceOptions &

options

)

[inline]

Definition at line 39 of file ReaderWriterYahoo.cpp.

                                                    : TileSource( options ), _options(options)
    {
        //nop
    }

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Member Function Documentation

osg::HeightField* YahooSource::createHeightField	(	const TileKey &	key,
		ProgressCallback *	progress
	)		[inline, virtual]

Creates a heightfield for the given TileKey The returned object is new and is the responsibility of the caller.

Reimplemented from osgEarth::TileSource.

Definition at line 101 of file ReaderWriterYahoo.cpp.

    {
        //NI
        OE_WARN << "[Yahoo] Driver does not support heightfields" << std::endl;
        return NULL;
    }

osg::Image* YahooSource::createImage	(	const TileKey &	key,
		ProgressCallback *	progress
	)		[inline, virtual]

Creates an image for the given TileKey. The returned object is new and is the responsibility of the caller.

Implements osgEarth::TileSource.

Definition at line 50 of file ReaderWriterYahoo.cpp.

    {
        //Return NULL if we are given a non global-mercator key
        if ( !key.getProfile()->getProfileType() == Profile::TYPE_MERCATOR ) return 0;

        std::stringstream buf;

        std::string dataset = 
            _options.dataset().isSet() ? _options.dataset().value() : "roads";
        
        if ( dataset == "roads" || dataset == "map" )
        {            
            // http://us.maps1.yimg.com/us.tile.maps.yimg.com/tl?v=4.1&md=2&x=0&y=0&z=2&r=1
            unsigned int tile_x, tile_y;
            key.getTileXY( tile_x, tile_y );
            unsigned int zoom = key.getLevelOfDetail();
            unsigned int size_x, size_y;
            key.getProfile()->getNumTiles( zoom, size_x, size_y );

            buf << "http://us.maps1.yimg.com/us.tile.maps.yimg.com/tl"
                << "?v=4.1&md=2&r=1"
                << "&x=" << (int)tile_x
                << "&y=" << ((int)size_y-1-(int)tile_y) - (int)size_y/2
                << "&z=" << zoom + 2;
        }
        else if ( dataset == "aerial" || dataset == "satellite" )
        {
            unsigned int tile_x, tile_y;
            key.getTileXY( tile_x, tile_y );
            unsigned int zoom = key.getLevelOfDetail();
            unsigned int size_x, size_y;
            key.getProfile()->getNumTiles( zoom, size_x, size_y );

            buf << "http://us.maps3.yimg.com/aerial.maps.yimg.com/ximg"
                << "?v=1.8&s=256&t=a&r=1"
                << "&x=" << (int)tile_x
                << "&y=" << ((int)size_y-1-(int)tile_y) - (int)size_y/2
                << "&z=" << zoom + 2;
        }

                std::string base;
                base = buf.str();

        OE_DEBUG << key.str() << "=" << base << std::endl;
        
        osg::ref_ptr<osg::Image> image;
        HTTPClient::readImageFile( base, image, 0L, progress ); //getOptions(), progress );
        return image.release();
    }

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virtual std::string YahooSource::getExtension

(

)

const [inline, virtual]

Gets the preferred extension for this TileSource

Reimplemented from osgEarth::TileSource.

Definition at line 109 of file ReaderWriterYahoo.cpp.

    {
        //All Yahoo tiles are in JPEG format
        return "jpg";
    }

void YahooSource::initialize	(	const std::string &	referenceURI,
		const Profile *	overrideProfile
	)		[inline, virtual]

Initialize the TileSource. The profile should be computed and set here using setProfile()

Implements osgEarth::TileSource.

Definition at line 45 of file ReaderWriterYahoo.cpp.

    {
        setProfile( Profile::create( "spherical-mercator", "", 2, 2 ) );
    }

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virtual bool YahooSource::supportsPersistentCaching

(

)

const [inline, virtual]

Returns true if data from this source can be cached to disk

Reimplemented from osgEarth::TileSource.

Definition at line 115 of file ReaderWriterYahoo.cpp.

    {
        return false;
    }

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Member Data Documentation

const YahooOptions YahooSource::_options [private]

Reimplemented from osgEarth::TileSource.

Definition at line 121 of file ReaderWriterYahoo.cpp.

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The documentation for this class was generated from the following file:

• /home/cube/sources/osgearth/src/osgEarthDrivers/yahoo/ReaderWriterYahoo.cpp