SceneTree::SceneTree( dp::sg::core::SceneSharedPtr const & scene )
: m_scene( scene )
, m_rootNode( scene->getRootNode() )
, m_dirty( false )
, m_switchObserver( SwitchObserver::create() )
{
}
SceneTree::SceneTree( dp::sg::core::SceneSharedPtr const & scene )
: m_scene( scene )
, m_rootNode( scene->getRootNode() )
, m_dirty( false )
, m_switchObserver( SwitchObserver::create() )
{
m_objectObserver = ObjectObserver::create( this );
m_geoNodeObserver = GeoNodeObserver::create( this );
m_transformObserver = TransformObserver::create( this );
m_sceneObserver = SceneObserver::create( this );
// push an identity transform onto the transform tree so objects without transforms get the identity
TransformTreeNode TransformTreeSentinel;
setIdentity( TransformTreeSentinel.m_worldMatrix );
setIdentity( TransformTreeSentinel.m_localMatrix );
TransformTreeIndex transformTreeSentinel = m_transformTree.insertNode( TransformTreeSentinel, ~0, ~0 );
ObjectTreeNode objectTreeSentinel;
objectTreeSentinel.m_clipPlaneGroup = ClipPlaneGroup::create();
m_objectTreeSentinel = m_objectTree.insertNode( objectTreeSentinel, ~0, ~0 );
m_objectTree[m_objectTreeSentinel].m_transformIndex = transformTreeSentinel;
m_transformTree[transformTreeSentinel].m_objectTreeIndex = m_objectTreeSentinel;
SceneTreeGenerator rlg( this );
rlg.setCurrentTransformTreeData( transformTreeSentinel, ~0 );
rlg.setCurrentObjectTreeData( m_objectTreeSentinel, ~0 );
rlg.apply( scene );
// root node is first child below sentinel
m_objectTreeRootNode = m_objectTree[m_objectTreeSentinel].m_firstChild;
}