osg::Image*
MultiImage::createImage()
{
if (_images.size() == 0)
{
OE_NOTICE << "MultiImage 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();
}
osg::Image*
ImageMosaic::createImage()
{
if (_images.size() == 0)
{
OE_NOTICE << "ImageMosaic has no images..." << std::endl;
return 0;
}
// find the first valid tile and use its size as the mosaic tile size
TileImage* tile = 0L;
for (int i = 0; i<_images.size() && !tile; ++i)
if (_images[i]._image.valid())
tile = &_images[i];
if ( !tile )
return 0L;
unsigned int tileWidth = tile->_image->s();
unsigned int tileHeight = tile->_image->t();
//OE_NOTICE << "TileDim " << tileWidth << ", " << tileHeight << std::endl;
unsigned int minTileX = tile->_tileX;
unsigned int minTileY = tile->_tileY;
unsigned int maxTileX = tile->_tileX;
unsigned int maxTileY = tile->_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, tile->_image->getPixelFormat(), tile->_image->getDataType());
image->setInternalTextureFormat(tile->_image->getInternalTextureFormat());
ImageUtils::markAsNormalized(image.get(), ImageUtils::isNormalized(tile->getImage()));
//Initialize the image to be completely white!
//memset(image->data(), 0xFF, image->getImageSizeInBytes());
ImageUtils::PixelWriter write(image.get());
for (unsigned t = 0; t < pixelsHigh; ++t)
for (unsigned s = 0; s < pixelsWide; ++s)
write(osg::Vec4(1,1,1,0), s, t);
//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;
osg::Image* sourceTile = i->getImage();
if ( sourceTile )
{
ImageUtils::copyAsSubImage(sourceTile, image.get(), dstX, dstY);
}
}
return image.release();
}