osgEarth::ImageMosaic Class Reference

Inheritance diagram for osgEarth::ImageMosaic:

Collaboration diagram for osgEarth::ImageMosaic:

List of all members.

Public Types
typedef std::vector< TileImage >	TileImageList
Public Member Functions
	ImageMosaic ()
osg::Image *	createImage ()
TileImageList &	getImages ()
void	getExtents (double &minX, double &minY, double &maxX, double &maxY)
Protected Member Functions
	~ImageMosaic ()
Protected Attributes
TileImageList	_images

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Detailed Description

Utility class for extracting a single image from a collection of image tiles

Definition at line 58 of file ImageMosaic.

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Member Typedef Documentation

typedef std::vector<TileImage> osgEarth::ImageMosaic::TileImageList

A list of GeoImages

Definition at line 66 of file ImageMosaic.

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Constructor & Destructor Documentation

ImageMosaic::ImageMosaic

(

)

Definition at line 42 of file ImageMosaic.cpp.

{
}

ImageMosaic::~ImageMosaic

(

)

[protected]

Definition at line 46 of file ImageMosaic.cpp.

{
}

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Member Function Documentation

osg::Image * ImageMosaic::createImage

(

)

Definition at line 67 of file ImageMosaic.cpp.

{
    if (_images.size() == 0)
    {
        OE_NOTICE << "ImageMosaic has no images..." << std::endl;
        return 0;
    }

    unsigned int tileWidth = _images[0]._image->s();
    unsigned int tileHeight = _images[0]._image->t();

    //OE_NOTICE << "TileDim " << tileWidth << ", " << tileHeight << std::endl;

    unsigned int minTileX = _images[0]._tileX;
    unsigned int minTileY = _images[0]._tileY;
    unsigned int maxTileX = _images[0]._tileX;
    unsigned int maxTileY = _images[0]._tileY;

    //Compute the tile size.
    for (TileImageList::iterator i = _images.begin(); i != _images.end(); ++i)
    {
        if (i->_tileX < minTileX) minTileX = i->_tileX;
        if (i->_tileY < minTileY) minTileY = i->_tileY;

        if (i->_tileX > maxTileX) maxTileX = i->_tileX;
        if (i->_tileY > maxTileY) maxTileY = i->_tileY;
    }

    unsigned int tilesWide = maxTileX - minTileX + 1;
    unsigned int tilesHigh = maxTileY - minTileY + 1;

    unsigned int pixelsWide = tilesWide * tileWidth;
    unsigned int pixelsHigh = tilesHigh * tileHeight;

    osg::ref_ptr<osg::Image> image = new osg::Image;
    image->allocateImage(pixelsWide, pixelsHigh, 1, _images[0]._image->getPixelFormat(), _images[0]._image->getDataType());
    image->setInternalTextureFormat(_images[0]._image->getInternalTextureFormat()); 

    //Composite the incoming images into the master image
    for (TileImageList::iterator i = _images.begin(); i != _images.end(); ++i)
    {
        //Determine the indices in the master image for this image
        int dstX = (i->_tileX - minTileX) * tileWidth;
        int dstY = (maxTileY - i->_tileY) * tileHeight;
        ImageUtils::copyAsSubImage(i->getImage(), image.get(), dstX, dstY);
    }

    return image.release();
}

Here is the call graph for this function:

void ImageMosaic::getExtents	(	double &	minX,
		double &	minY,
		double &	maxX,
		double &	maxY
	)

Definition at line 50 of file ImageMosaic.cpp.

{
    minX = DBL_MAX;
    maxX = -DBL_MAX;
    minY = DBL_MAX;
    maxY = -DBL_MAX;

    for (TileImageList::iterator i = _images.begin(); i != _images.end(); ++i)
    {
        minX = osg::minimum(i->_minX, minX);
        minY = osg::minimum(i->_minY, minY);
        maxX = osg::maximum(i->_maxX, maxX);
        maxY = osg::maximum(i->_maxY, maxY);
    }
}

TileImageList& osgEarth::ImageMosaic::getImages

(

)

[inline]

Gets the images for this ImageMosaic

Definition at line 69 of file ImageMosaic.

{return _images;}

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Member Data Documentation

TileImageList osgEarth::ImageMosaic::_images [protected]

Definition at line 76 of file ImageMosaic.

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

• /home/cube/sources/osgearth/src/osgEarth/ImageMosaic
• /home/cube/sources/osgearth/src/osgEarth/ImageMosaic.cpp