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diff --git a/intern/decimation/intern/LOD_QSDecimator.h b/intern/decimation/intern/LOD_QSDecimator.h
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+/**
+ * $Id$
+ * ***** BEGIN GPL/BL DUAL 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. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * 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.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ */
+
+#ifndef NAN_INCLUDED_LOD_QSDecimator_H
+
+#define NAN_INCLUDED_LOD_QSDecimator_H
+
+#include "MEM_NonCopyable.h"
+#include "LOD_ManMesh2.h"
+#include "LOD_ExternNormalEditor.h"
+#include "LOD_EdgeCollapser.h"
+#include "LOD_QuadricEditor.h"
+
+class LOD_ExternBufferEditor;
+
+class LOD_QSDecimator : public MEM_NonCopyable {
+
+public :
+
+	static
+		LOD_QSDecimator *
+	New(
+		LOD_ManMesh2 &mesh,
+		LOD_ExternNormalEditor &face_editor,
+		LOD_ExternBufferEditor &extern_editor
+	);
+
+
+		bool
+	Arm(
+	);
+
+
+		bool
+	Step(
+	);
+
+private :
+
+	LOD_QSDecimator(
+		LOD_ManMesh2 &mesh,
+		LOD_ExternNormalEditor &face_editor,
+		LOD_ExternBufferEditor &extern_editor
+	);
+
+		bool
+	CollapseEdge(
+	);
+
+		bool
+	BuildHeap(
+	);
+
+		void
+	UpdateHeap(
+		std::vector<LOD_EdgeInd> &deg_edges,
+		std::vector<LOD_EdgeInd> &new_edges
+	);	
+
+		void
+	DeletePrimitives(
+		const std::vector<LOD_EdgeInd> & degenerate_edges,
+		const std::vector<LOD_FaceInd> & degenerate_faces,
+		const std::vector<LOD_VertexInd> & degenerate_vertices
+	);
+
+
+private :	
+
+	// owned by this class
+	//////////////////////
+
+	MEM_SmartPtr<LOD_EdgeCollapser> m_collapser;
+	MEM_SmartPtr<CTR_UHeap<LOD_Edge> > m_heap;
+	MEM_SmartPtr<LOD_QuadricEditor> m_quadric_editor;
+
+	bool m_is_armed;
+
+	// arguments to New(...)
+	////////////////////////
+
+	LOD_ManMesh2 & m_mesh;
+	LOD_ExternNormalEditor &m_face_editor;
+	LOD_ExternBufferEditor & m_extern_editor;	
+
+	// temporary buffers
+	////////////////////
+
+	std::vector<LOD_FaceInd> m_deg_faces;
+	std::vector<LOD_EdgeInd> m_deg_edges;
+	std::vector<LOD_VertexInd> m_deg_vertices;
+
+	std::vector<LOD_FaceInd> m_update_faces;
+	std::vector<LOD_EdgeInd> m_new_edges;
+	std::vector<LOD_VertexInd> m_update_vertices;
+
+
+};
+#endif
+