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Added support for reading .osg, .osgb, .osgx, .osgt and .ive models that contain volumes from within the volume tag.

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This commit is contained in:
Robert Osfield 2011-06-07 20:24:49 +00:00
parent 537272b98f
commit 9aa7010ded
1 changed files with 170 additions and 102 deletions
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80
src/osgPresentation/SlideShowConstructor.cpp
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@ -1753,7 +1753,37 @@ void SlideShowConstructor::addVolume(const std::string& filename, const Position
// osg::Object::DataVariance defaultMatrixDataVariance = osg::Object::DYNAMIC; // STATIC
std::string foundFile = filename;
osg::ref_ptr<osg::Image> image;
osg::ref_ptr<osgVolume::Volume> volume;
osg::ref_ptr<osgVolume::VolumeTile> tile;
osg::ref_ptr<osgVolume::ImageLayer> layer;
// check for wild cards
if (filename.find('*')!=std::string::npos)
{
osgDB::DirectoryContents filenames = osgDB::expandWildcardsInFilename(filename);
if (filenames.empty()) return;
// make sure images are in alphabetical order.
std::sort(filenames.begin(), filenames.end());
typedef std::vector< osg::ref_ptr<osg::Image> > Images;
Images images;
for(osgDB::DirectoryContents::iterator itr = filenames.begin();
itr != filenames.end();
++itr)
{
osg::ref_ptr<osg::Image> loadedImage = osgDB::readImageFile(*itr);
if (loadedImage.valid())
{
OSG_NOTICE<<"Image loaded "<<*itr<<std::endl;
images.push_back(loadedImage.get());
}
}
OSG_NOTICE<<"Need to build volume from images"<<std::endl;
}
else
{
osgDB::FileType fileType = osgDB::fileType(foundFile);
if (fileType == osgDB::FILE_NOT_FOUND)
{
@ -1761,31 +1791,69 @@ void SlideShowConstructor::addVolume(const std::string& filename, const Position
fileType = osgDB::fileType(foundFile);
}
osg::ref_ptr<osg::Image> image;
if (fileType == osgDB::DIRECTORY)
{
image = osgDB::readImageFile(foundFile+".dicom", _options.get());
}
else if (fileType == osgDB::REGULAR_FILE)
{
std::string ext = osgDB::getFileExtension(foundFile);
if (ext=="osg" || ext=="ive" || ext=="osgx" || ext=="osgb" || ext=="osgt")
{
osg::ref_ptr<osg::Object> obj = osgDB::readObjectFile(foundFile);
image = dynamic_cast<osg::Image*>(obj.get());
volume = dynamic_cast<osgVolume::Volume*>(obj.get());
}
else
{
image = osgDB::readImageFile( foundFile, _options.get() );
}
}
else
{
// not found image, so fallback to plguins/callbacks to find the model.
image = osgDB::readImageFile( filename, _options.get() );
if (image) recordOptionsFilePath(_options.get() );
}
}
if (!image && !volume) return;
if (volume.valid())
{
if (!tile)
{
if (volume->getNumChildren()>0)
{
tile = dynamic_cast<osgVolume::VolumeTile*>(volume->getChild(0));
}
}
}
else
{
volume = new osgVolume::Volume;
}
if (tile.valid())
{
layer = dynamic_cast<osgVolume::ImageLayer*>(tile->getLayer());
image = layer.valid() ? layer->getImage() : 0;
}
else
{
if (!image) return;
tile = new osgVolume::VolumeTile;
volume->addChild(tile.get());
}
if (!layer)
{
if (!image) return;
osg::ref_ptr<osgVolume::ImageDetails> details = dynamic_cast<osgVolume::ImageDetails*>(image->getUserData());
osg::ref_ptr<osg::RefMatrix> matrix = details ? details->getMatrix() : dynamic_cast<osg::RefMatrix*>(image->getUserData());
osg::ref_ptr<osgVolume::Volume> volume = new osgVolume::Volume;
osg::ref_ptr<osgVolume::VolumeTile> tile = new osgVolume::VolumeTile;
volume->addChild(tile.get());
osg::ref_ptr<osgVolume::ImageLayer> layer = new osgVolume::ImageLayer(image.get());
if (details)
{
@ -1875,7 +1943,7 @@ void SlideShowConstructor::addVolume(const std::string& filename, const Position
layer->addProperty(sp);
tile->setVolumeTechnique(new osgVolume::RayTracedTechnique);
tile->setEventCallback(new osgVolume::PropertyAdjustmentCallback());
}
osg::ref_ptr<osg::Node> model = volume.get();