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/*
* 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.
*/
#pragma once
/** \file
* \ingroup freestyle
* \brief Class to define a cell grid surrounding the projected image of a scene
*/
#include "../geometry/GridHelpers.h"
#include "../winged_edge/WEdge.h"
#ifdef WITH_CXX_GUARDEDALLOC
# include "MEM_guardedalloc.h"
#endif
namespace Freestyle {
class OccluderSource {
// Disallow copying and assignment
OccluderSource(const OccluderSource &other);
OccluderSource &operator=(const OccluderSource &other);
public:
OccluderSource(const GridHelpers::Transform &transform, WingedEdge &we);
virtual ~OccluderSource();
void begin();
virtual bool next();
bool isValid();
WFace *getWFace();
Polygon3r getCameraSpacePolygon();
Polygon3r &getGridSpacePolygon();
virtual void getOccluderProscenium(real proscenium[4]);
virtual real averageOccluderArea();
protected:
WingedEdge &wingedEdge;
vector<WShape *>::const_iterator currentShape, shapesEnd;
vector<WFace *>::const_iterator currentFace, facesEnd;
bool valid;
Polygon3r cachedPolygon;
const GridHelpers::Transform &transform;
void buildCachedPolygon();
#ifdef WITH_CXX_GUARDEDALLOC
MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:OccluderSource")
#endif
};
} /* namespace Freestyle */
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