diff options
Diffstat (limited to 'source/blender/freestyle/intern/scene_graph/NodeGroup.cpp')
-rw-r--r-- | source/blender/freestyle/intern/scene_graph/NodeGroup.cpp | 126 |
1 files changed, 126 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 100644 index 00000000000..3ac9cbbcbdc --- /dev/null +++ b/source/blender/freestyle/intern/scene_graph/NodeGroup.cpp @@ -0,0 +1,126 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2010 Blender Foundation. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/freestyle/intern/scene_graph/NodeGroup.cpp + * \ingroup freestyle + * \brief Class to represent a group node. This node can contains several children. + * \brief It also contains a transform matrix indicating the transform state of the underlying children. + * \author Stephane Grabli + * \date 24/01/2002 + */ + +#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; */ /* UNUSED */ + vector<Node*>::iterator node; + + for (node = _Children.begin(); node != _Children.end(); ++node) { + if ((*node) == iChild) { + (*node)->release(); + _Children.erase(node); + /* found = 1; */ /* UNUSED */ + 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(); +} |