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/* SPDX-License-Identifier: GPL-2.0-or-later */
#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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