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Wrap the scene template reference in another object for const correctness and to avoid it from being serialized with the osgDB serializer

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This commit is contained in:
scrawl 2017-01-30 18:59:04 +01:00
parent 29abb62dee
commit e90941a8b3
1 changed files with 15 additions and 1 deletions
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16
components/resource/scenemanager.cpp
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@ -413,13 +413,27 @@ namespace Resource
return node;
}
class TemplateRef : public osg::Object
{
public:
TemplateRef(const Object* object)
: mObject(object) {}
TemplateRef() {}
TemplateRef(const TemplateRef& copy, const osg::CopyOp&) : mObject(copy.mObject) {}
META_Object(Resource, TemplateRef)
private:
osg::ref_ptr<const Object> mObject;
};
osg::ref_ptr<osg::Node> SceneManager::createInstance(const std::string& name)
{
osg::ref_ptr<const osg::Node> scene = getTemplate(name);
osg::ref_ptr<osg::Node> cloned = osg::clone(scene.get(), SceneUtil::CopyOp());
// add a ref to the original template, to hint to the cache that it's still being used and should be kept in cache
cloned->getOrCreateUserDataContainer()->addUserObject(const_cast<osg::Node*>(scene.get()));
cloned->getOrCreateUserDataContainer()->addUserObject(new TemplateRef(scene));
return cloned;
}