virtual ReadResult readImage(const std::string& file, const osgDB::ReaderWriter::Options* options) const
{
std::string ext = osgDB::getLowerCaseFileExtension(file);
if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
std::string fileName = osgDB::findDataFile( file, options );
if (fileName.empty()) return ReadResult::FILE_NOT_FOUND;
osgDB::ifstream istream(fileName.c_str(), std::ios::in | std::ios::binary);
if(!istream) return ReadResult::ERROR_IN_READING_FILE;
ReadResult rr = readJPGStream(istream);
if(rr.validImage()) rr.getImage()->setFileName(file);
return rr;
}
virtual ReadResult readObject (const std::string &file, const osgDB::ReaderWriter::Options* options) const
{
ReadResult rr = readImage(file, options);
if (!rr.validImage())
return rr;
bool use_core_video = true;
if (options && !options->getPluginStringData("disableCoreVideo").empty())
use_core_video = false;
osg::ref_ptr<OSXAVFoundationVideo> video = dynamic_cast<OSXAVFoundationVideo*>(rr.getImage());
if (!video || !use_core_video)
return rr;
osg::ref_ptr<OSXAVFoundationCoreVideoTexture> texture = new OSXAVFoundationCoreVideoTexture(video);
return texture.release();
}
virtual ReadResult readNode(const std::string& file, const osgDB::ReaderWriter::Options* options =NULL) const
{
ReadResult result = readImage(file, options);
if (!result.validImage()) return result;
osg::ref_ptr<osgVolume::VolumeTile> tile = new osgVolume::VolumeTile;
tile->setVolumeTechnique(new osgVolume::RayTracedTechnique());
osg::ref_ptr<osgVolume::ImageLayer> layer= new osgVolume::ImageLayer(result.getImage());
layer->rescaleToZeroToOneRange();
osgVolume::SwitchProperty* sp = new osgVolume::SwitchProperty;
sp->setActiveProperty(0);
float alphaFunc = 0.1f;
osgVolume::AlphaFuncProperty* ap = new osgVolume::AlphaFuncProperty(alphaFunc);
osgVolume::SampleDensityProperty* sd = new osgVolume::SampleDensityProperty(0.005);
osgVolume::TransparencyProperty* tp = new osgVolume::TransparencyProperty(1.0);
{
// Standard
osgVolume::CompositeProperty* cp = new osgVolume::CompositeProperty;
cp->addProperty(ap);
cp->addProperty(sd);
cp->addProperty(tp);
sp->addProperty(cp);
}
{
// Light
osgVolume::CompositeProperty* cp = new osgVolume::CompositeProperty;
cp->addProperty(ap);
cp->addProperty(sd);
cp->addProperty(tp);
cp->addProperty(new osgVolume::LightingProperty);
sp->addProperty(cp);
}
{
// Isosurface
osgVolume::CompositeProperty* cp = new osgVolume::CompositeProperty;
cp->addProperty(sd);
cp->addProperty(tp);
cp->addProperty(new osgVolume::IsoSurfaceProperty(alphaFunc));
sp->addProperty(cp);
}
{
// MaximumIntensityProjection
osgVolume::CompositeProperty* cp = new osgVolume::CompositeProperty;
cp->addProperty(ap);
cp->addProperty(sd);
cp->addProperty(tp);
cp->addProperty(new osgVolume::MaximumIntensityProjectionProperty);
sp->addProperty(cp);
}
layer->addProperty(sp);
tile->setLayer(layer.get());
// get matrix providing size of texels (in mm)
osg::RefMatrix* matrix = dynamic_cast<osg::RefMatrix*>(result.getImage()->getUserData());
if (matrix)
{
osgVolume::Locator* locator = new osgVolume::Locator(*matrix);
tile->setLocator(locator);
layer->setLocator(locator);
// result.getImage()->setUserData(0);
osg::notify(osg::NOTICE)<<"Locator "<<*matrix<<std::endl;
}
else
{
osg::notify(osg::NOTICE)<<"No Locator found on osg::Image"<<std::endl;
}
return tile.release();
}
