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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,
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/** \file blender/freestyle/intern/winged_edge/WSFillGrid.cpp
 *  \ingroup freestyle
 *  \brief Class to fill in a grid from a SceneGraph (uses only the WingedEdge structures)
 *  \author Stephane Grabli
 *  \date 03/05/2003
 */

#include "WEdge.h"
#include "WSFillGrid.h"

namespace Freestyle {

void WSFillGrid::fillGrid()
{
	if (!_winged_edge || !_grid)
		return;

	vector<WShape *> wshapes = _winged_edge->getWShapes();
	vector<WVertex *> fvertices;
	vector<Vec3r> vectors;
	vector<WFace *> faces;

	for (vector<WShape *>::const_iterator it = wshapes.begin(); it != wshapes.end(); ++it) {
		faces = (*it)->GetFaceList();

		for (vector<WFace *>::const_iterator f = faces.begin(); f != faces.end(); ++f) {
			(*f)->RetrieveVertexList(fvertices);

			for (vector<WVertex*>::const_iterator wv = fvertices.begin(); wv != fvertices.end(); ++wv)
				vectors.push_back(Vec3r((*wv)->GetVertex()));

			// occluder will be deleted by the grid
			Polygon3r *occluder = new Polygon3r(vectors, (*f)->GetNormal());
			occluder->setId(_polygon_id++);
			occluder->userdata = (void *)(*f);
			_grid->insertOccluder(occluder);
			vectors.clear();
			fvertices.clear();
		}
		faces.clear();
	}
}

} /* namespace Freestyle */
