SkinResource*
ResourceLibrary::getSkin( const SkinSymbol* symbol, Random& prng, const osgDB::Options* dbOptions ) const
{
const_cast<ResourceLibrary*>(this)->initialize( dbOptions );
if (symbol->name().isSet())
{
return getSkin(symbol->name()->eval(), dbOptions);
}
SkinResourceVector candidates;
getSkins( symbol, candidates );
unsigned size = candidates.size();
if ( size == 0 )
{
return 0L;
}
else if ( size == 1 )
{
return candidates[0].get();
}
else
{
return candidates[ prng.next(size) ].get();
}
}
void SkinTextureArray::build(SkinResourceVector& skins, const osgDB::Options* dbOptions)
{
_texture = 0;
_layerIndex.clear();
unsigned int maxWidth = 0;
unsigned int maxHeight = 0;
std::vector< osg::ref_ptr< osg::Image > > images;
for (unsigned int i = 0; i < skins.size(); i++)
{
osg::ref_ptr< osg::Image > image = skins[i]->createImage( dbOptions );
if (image.valid())
{
if (maxWidth < image->s()) maxWidth = image->s();
if (maxHeight < image->t()) maxHeight = image->t();
_layerIndex[ skins[i]->name() ] = i;
images.push_back( image.get() );
}
}
// Now resize all the images to the largest size.
for (unsigned int i = 0; i < images.size(); i++)
{
osg::ref_ptr< osg::Image> resized;
if (images[i]->s() != maxWidth || images[i]->t() != maxHeight)
{
OE_DEBUG << "resizing image to " << maxWidth << "x" << maxHeight << std::endl;
ImageUtils::resizeImage( images[i].get(), maxWidth, maxHeight, resized, 0, true);
}
else
{
resized = images[i].get();
}
resized = ImageUtils::convertToRGBA8( resized.get() );
images[i] = resized.get();
}
osg::Texture2DArray* texture = new osg::Texture2DArray();
texture->setTextureDepth( images.size() );
texture->setTextureWidth( maxWidth );
texture->setTextureHeight( maxHeight );
texture->setSourceFormat( GL_RGBA );
texture->setInternalFormat( GL_RGBA8 );
texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR_MIPMAP_LINEAR);
texture->setFilter(osg::Texture::MAG_FILTER,osg::Texture::LINEAR);
texture->setWrap(osg::Texture::WRAP_S,osg::Texture::REPEAT);
texture->setWrap(osg::Texture::WRAP_T,osg::Texture::REPEAT);
texture->setResizeNonPowerOfTwoHint(false);
for (unsigned int i = 0; i < images.size(); i++)
{
texture->setImage(i, images[i].get() );
}
_texture = texture;
}
SkinResource*
ResourceLibrary::getSkin( const SkinSymbol* symbol, Random& prng ) const
{
SkinResourceVector candidates;
getSkins( symbol, candidates );
unsigned size = candidates.size();
if ( size == 0 )
{
return 0L;
}
else if ( size == 1 )
{
return candidates[0].get();
}
else
{
return candidates[ prng.next(size) ].get();
}
}
