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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_AVERAGE_AREA_GRID_DENSITY_PROVIDER_H__
+#define __FREESTYLE_AVERAGE_AREA_GRID_DENSITY_PROVIDER_H__
+
+/** \file blender/freestyle/intern/view_map/AverageAreaGridDensityProvider.h
+ *  \ingroup freestyle
+ *  \brief Class to define a cell grid surrounding the projected image of a scene
+ *  \author Alexander Beels
+ *  \date 2011-2-9
+ */
+
+#include "GridDensityProvider.h"
+
+class AverageAreaGridDensityProvider : public GridDensityProvider
+{
+	// Disallow copying and assignment
+	AverageAreaGridDensityProvider(const AverageAreaGridDensityProvider& other);
+	AverageAreaGridDensityProvider& operator=(const AverageAreaGridDensityProvider& other);
+
+public:
+	AverageAreaGridDensityProvider(OccluderSource& source, const real proscenium[4], real sizeFactor);
+	AverageAreaGridDensityProvider(OccluderSource& source, const BBox<Vec3r>& bbox,
+	                               const GridHelpers::Transform& transform, real sizeFactor);
+	AverageAreaGridDensityProvider(OccluderSource& source, real sizeFactor);
+	virtual ~AverageAreaGridDensityProvider();
+
+private:
+	void initialize (const real proscenium[4], real sizeFactor);
+};
+
+class AverageAreaGridDensityProviderFactory : public GridDensityProviderFactory
+{
+public:
+	AverageAreaGridDensityProviderFactory(real sizeFactor);
+	~AverageAreaGridDensityProviderFactory();
+
+	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;
+};
+
+#endif // __FREESTYLE_AVERAGE_AREA_GRID_DENSITY_PROVIDER_H__