<commit_before>/*******************************************************************************
*                                                                              *
* Author    :  <NAME>                                                   *
* Version   :  4.2.8                                                           *
* Date      :  21 May 2011                                                     *
* Website   :  http://www.angusj.com                                           *
* Copyright :  <NAME> 2010-2011                                         *
*                                                                              *
* License:                                                                     *
* Use, modification & distribution is subject to Boost Software License Ver 1. *
* http://www.boost.org/LICENSE_1_0.txt                                         *
*                                                                              *
* Attributions:                                                                *
* The code in this library is an extension of Bala Vatti's clipping algorithm: *
* "A generic solution to polygon clipping"                                     *
* Communications of the ACM, Vol 35, Issue 7 (July 1992) pp 56-63.             *
* http://portal.acm.org/citation.cfm?id=129906                                 *
*                                                                              *
* Computer graphics and geometric modeling: implementation and algorithms      *
* By <NAME>                                                            *
* Springer; 1 edition (January 4, 2005)                                        *
* http://books.google.com/books?q=vatti+clipping+agoston                       *
*                                                                              *
*******************************************************************************/

#ifndef clipper_hpp
#define clipper_hpp

#include <vector>
#include <stdexcept>
#include <cstring>
#include <cstdlib>

namespace clipper {

enum ClipType { ctIntersection, ctUnion, ctDifference, ctXor };
enum PolyType { ptSubject, ptClip };
enum PolyFillType { pftEvenOdd, pftNonZero };

typedef signed long long long64;
typedef unsigned long long ulong64;

struct IntPoint {
  long64 X;
  long64 Y;
  IntPoint(long64 x = 0, long64 y = 0): X(x), Y(y) {};
};

typedef std::vector< IntPoint > Polygon;
typedef std::vector< Polygon > Polygons;

bool IsClockwise(const Polygon &poly, bool UseFullInt64Range = true);
double Area(const Polygon &poly, bool UseFullInt64Range = true);
bool OffsetPolygons(const Polygons &in_pgs, Polygons &out_pgs, const float &delta);

//used internally ...
enum EdgeSide { esLeft, esRight };
enum IntersectProtects { ipNone = 0, ipLeft = 1, ipRight = 2, ipBoth = 3 };<commit_msg>wouldn't compile because <string> wasn't included<commit_after>/*******************************************************************************
*                                                                              *
* Author    :  <NAME>                                                   *
* Version   :  4.2.8                                                           *
* Date      :  21 May 2011                                                     *
* Website   :  http://www.angusj.com                                           *
* Copyright :  <NAME> 2010-2011                                         *
*                                                                              *
* License:                                                                     *
* Use, modification & distribution is subject to Boost Software License Ver 1. *
* http://www.boost.org/LICENSE_1_0.txt                                         *
*                                                                              *
* Attributions:                                                                *
* The code in this library is an extension of Bala Vatti's clipping algorithm: *
* "A generic solution to polygon clipping"                                     *
* Communications of the ACM, Vol 35, Issue 7 (July 1992) pp 56-63.             *
* http://portal.acm.org/citation.cfm?id=129906                                 *
*                                                                              *
* Computer graphics and geometric modeling: implementation and algorithms      *
* By <NAME>                                                            *
* Springer; 1 edition (January 4, 2005)                                        *
* http://books.google.com/books?q=vatti+clipping+agoston                       *
*                                                                              *
*******************************************************************************/

#ifndef clipper_hpp
#define clipper_hpp

#include <string>
#include <vector>
#include <stdexcept>
#include <cstring>
#include <cstdlib>

namespace clipper {

enum ClipType { ctIntersection, ctUnion, ctDifference, ctXor };
enum PolyType { ptSubject, ptClip };
enum PolyFillType { pftEvenOdd, pftNonZero };

typedef signed long long long64;
typedef unsigned long long ulong64;

struct IntPoint {
  long64 X;
  long64 Y;
  IntPoint(long64 x = 0, long64 y = 0): X(x), Y(y) {};
};

typedef std::vector< IntPoint > Polygon;
typedef std::vector< Polygon > Polygons;

bool IsClockwise(const Polygon &poly, bool UseFullInt64Range = true);
double Area(const Polygon &poly, bool UseFullInt64Range = true);
bool OffsetPolygons(const Polygons &in_pgs, Polygons &out_pgs, const float &delta);

//used internally ...
enum EdgeSide { esLeft, esRight };
enum IntersectProtects { ipNone = 0, ipLeft = 1, ipRight = 2, ipBoth = 3 };
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