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/* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
 * Copyright 2008-2013 Pelican Mapping
 * http://osgearth.org
 *
 * osgEarth is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */
#ifndef OSGEARTH_DP_LINE_SEG_INTERSECTOR_H
#define OSGEARTH_DP_LINE_SEG_INTERSECTOR_H

#include <osgEarthUtil/Common>
#include <osgUtil/LineSegmentIntersector>

namespace osgEarth
{
    /**
     * A double-precision version of the osgUtil::LineSegmentIntersector.
     * Use this instead of the OSG one when working in geocentric space.
     */
    class OSGEARTH_EXPORT DPLineSegmentIntersector : public osgUtil::LineSegmentIntersector
    {
    public:
        DPLineSegmentIntersector(const osgUtil::Intersector::CoordinateFrame& cf, const osg::Vec3d& start, const osg::Vec3d& end)
            : osgUtil::LineSegmentIntersector(cf, start, end) { }

        DPLineSegmentIntersector(const osg::Vec3d& start, const osg::Vec3d& end)
            : osgUtil::LineSegmentIntersector(start, end) { }

        /** dtor */
        virtual ~DPLineSegmentIntersector() { }

    public: // overrides
        
        virtual osgUtil::Intersector* clone(osgUtil::IntersectionVisitor& iv);
        virtual void intersect(osgUtil::IntersectionVisitor& iv, osg::Drawable* drawable);
    };

} // namespace osgEarth::Util

#endif // OSGEARTH_DP_LINE_SEG_INTERSECTOR_H