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+/*************************************************************************
+** PathClipper.h **
+** **
+** This file is part of dvisvgm -- the DVI to SVG converter **
+** Copyright (C) 2005-2015 Martin Gieseking <martin.gieseking@uos.de> **
+** **
+** 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 3 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, see <http://www.gnu.org/licenses/>. **
+*************************************************************************/
+
+#ifndef DVISVGM_PATHCLIPPER_H
+#define DVISVGM_PATHCLIPPER_H
+
+#include <clipper.hpp>
+#include <string>
+#include <vector>
+#include "Bezier.h"
+#include "GraphicPath.h"
+#include "MessageException.h"
+
+
+using ClipperLib::IntPoint;
+
+class PathClipper
+{
+ public:
+ typedef GraphicPath<double> CurvedPath;
+
+ public:
+ PathClipper () : _numLines(0) {}
+ void intersect (const CurvedPath &p1, const CurvedPath &p2, CurvedPath &result);
+
+ protected:
+ void flatten (const CurvedPath &gp, ClipperLib::Paths &polygons);
+// void divide (IntPoint &p1, IntPoint &p2, IntPoint &ip);
+ void reconstruct (const ClipperLib::Path &polygon, CurvedPath &path);
+ void reconstruct (const ClipperLib::Paths &polygons, CurvedPath &path);
+ static void callback (IntPoint &e1bot, IntPoint &e1top, IntPoint &e2bot, IntPoint &e2top, IntPoint &ip);
+
+ private:
+ std::vector<Bezier> _curves;
+ int _numLines; ///< negative number of straight line segments in path been processed
+};
+
+#endif