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authorKarl Berry <karl@freefriends.org>2021-02-25 19:22:25 +0000
committerKarl Berry <karl@freefriends.org>2021-02-25 19:22:25 +0000
commitad547a6b5986815fda458221149728d9d9ab1d87 (patch)
tree16296910eb3eca724371474ea9aea3994dc69614 /Build/source/texk/dvisvgm/dvisvgm-src/src/PathClipper.hpp
parent947b43de3dd21d58ccc2ffadefc4441ea1c2a813 (diff)
restore Build,TODO from r57911
git-svn-id: svn://tug.org/texlive/trunk@57915 c570f23f-e606-0410-a88d-b1316a301751
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+/*************************************************************************
+** PathClipper.hpp **
+** **
+** This file is part of dvisvgm -- a fast DVI to SVG converter **
+** Copyright (C) 2005-2021 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 PATHCLIPPER_HPP
+#define PATHCLIPPER_HPP
+
+#include <clipper.hpp>
+#include <string>
+#include <vector>
+#include "Bezier.hpp"
+#include "GraphicsPath.hpp"
+#include "MessageException.hpp"
+
+
+using ClipperLib::IntPoint;
+
+class PathClipper {
+ public:
+ using CurvedPath = GraphicsPath<double>;
+
+ public:
+ CurvedPath intersect (const CurvedPath &p1, const CurvedPath &p2);
+ CurvedPath unite (const CurvedPath &p1, const CurvedPath &p2);
+
+ protected:
+ CurvedPath combine (ClipperLib::ClipType op, const CurvedPath &p1, const CurvedPath &p2);
+ void flatten (const CurvedPath &gp, ClipperLib::Paths &polygons);
+ 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=0; ///< negative number of straight line segments in path been processed
+};
+
+#endif