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//
// Filename : OccluderSource.h
// Author(s) : Alexander Beels
// Purpose : Class to define a cell grid surrounding
// the projected image of a scene
// Date of creation : 2010-12-21
//
///////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) : Please refer to the COPYRIGHT file distributed
// with this source distribution.
//
// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef OCCLUDERSOURCE_H
#define OCCLUDERSOURCE_H
#include "../winged_edge/WEdge.h"
#include "../geometry/GridHelpers.h"
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();
};
#endif // OCCLUDERSOURCE_H
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