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+/*
+ * ***** 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 *****
+ */
+
+#ifndef __FREESTYLE_HEURISTIC_GRID_DENSITY_PROVIDER_FACTORY_H__
+#define __FREESTYLE_HEURISTIC_GRID_DENSITY_PROVIDER_FACTORY_H__
+
+/** \file blender/freestyle/intern/view_map/HeuristicGridDensityProviderFactory.h
+ *  \ingroup freestyle
+ *  \brief Class to define a cell grid surrounding the projected image of a scene
+ *  \author Alexander Beels
+ *  \date 2011-2-8
+ */
+
+//#include <memory> // provided by GridDensityProvider.h
+
+#include "AverageAreaGridDensityProvider.h"
+//#include "GridDensityProvider.h" // provided by *GridDensityProvider.h below
+#include "Pow23GridDensityProvider.h"
+
+class HeuristicGridDensityProviderFactory : public GridDensityProviderFactory
+{
+public:
+	HeuristicGridDensityProviderFactory(real sizeFactor, unsigned numFaces);
+	~HeuristicGridDensityProviderFactory();
+
+	auto_ptr<GridDensityProvider> newGridDensityProvider(OccluderSource& source, const real proscenium[4]);
+	auto_ptr<GridDensityProvider> newGridDensityProvider(OccluderSource& source, const BBox<Vec3r>& bbox,
+	                                                     const GridHelpers::Transform& transform);
+	auto_ptr<GridDensityProvider> newGridDensityProvider(OccluderSource& source);
+
+protected:
+	real sizeFactor;
+	unsigned numFaces;
+};
+
+#endif // __FREESTYLE_HEURISTIC_GRID_DENSITY_PROVIDER_FACTORY_H__