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;
}
void SceneTree::addSubTree( NodeSharedPtr const& root, ObjectTreeIndex parentIndex, ObjectTreeIndex leftSibling)
{
SceneTreeGenerator rlg( this->shared_from_this() );
rlg.setCurrentObjectTreeData( parentIndex, leftSibling );
rlg.apply( root );
}
void SceneTree::addSubTree( const NodeWeakPtr& root,
ObjectTreeIndex parentIndex, ObjectTreeIndex leftSibling,
TransformTreeIndex parentTransform, TransformTreeIndex leftSiblingTransform )
{
SceneTreeGenerator rlg( this );
rlg.setCurrentObjectTreeData( parentIndex, leftSibling );
rlg.setCurrentTransformTreeData( parentTransform, leftSiblingTransform );
rlg.apply( root->getSharedPtr<Node>() );
}
void SceneTree::init()
{
m_objectObserver = ObjectObserver::create( shared_from_this() );
m_sceneObserver = SceneObserver::create( shared_from_this() );
// push a sentinel root group in the vector to avoid special cases for the real root-node later on
ObjectTreeNode objectTreeSentinel;
objectTreeSentinel.m_transform = m_transformTree.getSentinel();
objectTreeSentinel.m_transformParent = -1;
objectTreeSentinel.m_clipPlaneGroup = ClipPlaneGroup::create();
m_objectTreeSentinel = m_objectTree.insertNode( objectTreeSentinel, ~0, ~0 );
SceneTreeGenerator rlg( this->shared_from_this() );
rlg.setCurrentObjectTreeData( m_objectTreeSentinel, ~0 );
rlg.apply( m_scene );
// root node is first child below sentinel
m_objectTreeRootNode = m_objectTree[m_objectTreeSentinel].m_firstChild;
}
