1 files changed, 122 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/scene_graph/NodeGroup.cpp b/source/blender/freestyle/intern/scene_graph/NodeGroup.cpp
new file mode 100755
index 00000000000..3d2aa2c8694
--- /dev/null
+++ b/source/blender/freestyle/intern/scene_graph/NodeGroup.cpp
@@ -0,0 +1,122 @@
+
+//
+//  Copyright (C) : Please refer to the COPYRIGHT file distributed 
+//   with this source distribution. 
+//
+//  This program is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU General Public License
+//  as published by the Free Software Foundation; either version 2
+//  of the License, or (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "NodeGroup.h"
+
+void NodeGroup::AddChild(Node *iChild)
+{
+  if(NULL == iChild)
+    return;
+
+  _Children.push_back(iChild);
+  iChild->addRef();
+}
+
+int NodeGroup::destroy()
+{
+  /*! Node::destroy makes a release on the object 
+   *  and then returns the reference counter.
+   *  If the reference counter is equal to 0, 
+   *  that means that nobody else is linking 
+   *  this node group and that we can destroy the whole 
+   *  underlying tree.
+   *  Else, one or several Node link this node group, 
+   *  and we only returns the reference counter 
+   *  decremented by Node::destroy();
+   */
+  int refThis = Node::destroy();
+  
+  // if refThis != 0, we can't destroy the tree
+  if(0 != refThis) 
+    return refThis;
+
+  // If we are here, that means that nobody else
+  // needs our NodeGroup and we can destroy it.
+  int refCount = 0;
+  vector<Node *>::iterator node;
+  
+  for(node=_Children.begin(); node!=_Children.end(); node++)
+  {
+    refCount = (*node)->destroy();
+    if(0 == refCount)
+      delete (*node);
+  }
+
+  _Children.clear();
+  
+  return refThis;
+}
+
+void NodeGroup::accept(SceneVisitor& v) {
+  v.visitNodeGroup(*this);
+  
+  v.visitNodeGroupBefore(*this);
+  for(vector<Node *>::iterator node=_Children.begin(), end=_Children.end(); 
+  node!=end;
+  node++)
+    (*node)->accept(v);
+  v.visitNodeGroupAfter(*this);
+}
+
+void NodeGroup::DetachChildren()
+{
+  vector<Node *>::iterator node;
+  
+  for(node=_Children.begin(); node!=_Children.end(); node++)
+  {
+    (*node)->release();
+  }
+
+  _Children.clear();
+}
+
+void NodeGroup::DetachChild(Node *iChild)
+{
+  int found = 0;
+  vector<Node*>::iterator node;
+  
+  for(node=_Children.begin(); node!=_Children.end(); node++)
+  {
+    if((*node) == iChild)
+    {
+      (*node)->release();
+      _Children.erase(node);
+      found = 1;
+      break;
+    }
+  }
+}
+
+void NodeGroup::RetrieveChildren(vector<Node*>& oNodes){
+  oNodes = _Children;
+}
+
+const BBox<Vec3r>& NodeGroup::UpdateBBox()
+{
+  vector<Node *>::iterator node;
+  clearBBox();
+  for(node=_Children.begin(); node!=_Children.end(); node++)
+  {
+    AddBBox((*node)->UpdateBBox());
+  }
+
+  return Node::UpdateBBox();
+}