/*
 * ***** 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.
 *
 * ***** 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"

namespace Freestyle {

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();

	AutoPtr<GridDensityProvider> newGridDensityProvider(OccluderSource& source, const real proscenium[4]);
	AutoPtr<GridDensityProvider> newGridDensityProvider(OccluderSource& source, const BBox<Vec3r>& bbox,
	                                                    const GridHelpers::Transform& transform);
	AutoPtr<GridDensityProvider> newGridDensityProvider(OccluderSource& source);

protected:
	real sizeFactor;
};

} /* namespace Freestyle */

#endif // __FREESTYLE_AVERAGE_AREA_GRID_DENSITY_PROVIDER_H__
