FGFS-4.1/OpenSceneGraph
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From David Callu, added getOrCreateScene method, made contractors protected.

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From Robert Osfield, made getOrCreateScene protected and made View a friend
of Scene to all it to construct Scene objects itself.
This commit is contained in:
Robert Osfield 2007-09-22 16:50:45 +00:00
parent 82b0f004e9
commit da70320707
2 changed files with 23 additions and 5 deletions
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13
include/osgViewer/Scene
View File

@ -29,9 +29,6 @@ class OSGVIEWER_EXPORT Scene : public osg::Referenced
{
public:
Scene();
virtual ~Scene();
void setSceneData(osg::Node* node);
osg::Node* getSceneData();
const osg::Node* getSceneData() const;
@ -44,9 +41,17 @@ class OSGVIEWER_EXPORT Scene : public osg::Referenced
* return 0 if no Scene has yet been assigned the specified node.*/
static Scene* getScene(osg::Node* node);
protected:
Scene();
virtual ~Scene();
/** Get the Scene object that has the specified node assigned to it.
* or return a new Scene if no Scene has yet been assigned the specified node.*/
static Scene* getOrCreateScene(osg::Node* node);
friend class View;
osg::ref_ptr<osg::Node> _sceneData;
osg::ref_ptr<osgDB::DatabasePager> _databasePager;

15
src/osgViewer/Scene.cpp
View File

@ -52,7 +52,7 @@ void Scene::setSceneData(osg::Node* node)
if (_databasePager.valid())
{
// register any PagedLOD that need to be tracked in the scene graph
_databasePager->registerPagedLODs(node);
if (node) _databasePager->registerPagedLODs(node);
}
}
@ -85,3 +85,16 @@ Scene* Scene::getScene(osg::Node* node)
return 0;
}
Scene* Scene::getOrCreateScene(osg::Node* node)
{
if (!node) return 0;
osgViewer::Scene* scene = getScene(node);
if (!scene)
{
scene = new Scene;
scene->setSceneData(node);
}
return scene;
}