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diff --git a/include/astra/Float32ProjectionData3DGPU.h b/include/astra/Float32ProjectionData3DGPU.h
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+/*
+-----------------------------------------------------------------------
+Copyright: 2010-2015, iMinds-Vision Lab, University of Antwerp
+           2014-2015, CWI, Amsterdam
+
+Contact: astra@uantwerpen.be
+Website: http://sf.net/projects/astra-toolbox
+
+This file is part of the ASTRA Toolbox.
+
+
+The ASTRA Toolbox 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 3 of the License, or
+(at your option) any later version.
+
+The ASTRA Toolbox 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 the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
+
+-----------------------------------------------------------------------
+$Id$
+*/
+
+#ifndef _INC_ASTRA_FLOAT32PROJECTIONDATA3DGPU
+#define _INC_ASTRA_FLOAT32PROJECTIONDATA3DGPU
+
+#include "Float32Data3DGPU.h"
+#include "ProjectionGeometry3D.h"
+#include "Float32ProjectionData3D.h"
+
+#ifdef ASTRA_CUDA
+
+namespace astra {
+
+/**
+ * This class represents three-dimensional Projection Data where the entire data block is stored in GPU memory.
+ */
+class _AstraExport CFloat32ProjectionData3DGPU : public CFloat32Data3DGPU, public CFloat32ProjectionData3D
+{
+public:
+
+	/** Default constructor. Sets all numeric member variables to 0 and all pointer member variables to NULL.
+	 *
+	 * If an object is constructed using this default constructor, it must always be followed by a call 
+	 * to one of the init() methods before the object can be used. Any use before calling init() is not allowed,
+	 * except calling the member function isInitialized().
+	 *
+	 */
+	CFloat32ProjectionData3DGPU();
+	
+	/** Construction.
+	 *
+	 * @param _pGeometry 3D volume geometry
+	 * @param _hnd the CUDA memory handle
+	 */
+
+	CFloat32ProjectionData3DGPU(CProjectionGeometry3D* _pGeometry, astraCUDA3d::MemHandle3D _hnd);
+
+	virtual ~CFloat32ProjectionData3DGPU();
+
+	/** Initialization.
+	 *
+	 * @param _pGeometry 3D volume geometry
+	 * @param _hnd the CUDA memory handle
+	 */
+
+	bool initialize(CProjectionGeometry3D* _pGeometry, astraCUDA3d::MemHandle3D _hnd);
+
+	/** Which type is this class?
+	 *
+	 * @return DataType: PROJECTION
+	 */
+	virtual CFloat32Data3D::EDataType getType() const { return PROJECTION; }
+
+	/** Get the volume geometry.
+	 *
+	 * @return pointer to volume geometry.
+	 */
+	CProjectionGeometry3D* getGeometry() const { ASTRA_ASSERT(m_bInitialized); return m_pGeometry; }
+
+};
+
+} // end namesProjection astra
+
+#endif
+
+#endif // _INC_ASTRA_FLOAT32PROJECTIONDATA3DGPU