+ add polyclipper to assimp repository.
git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1116 67173fc5-114c-0410-ac8e-9d2fd5bffc1fpull/5/head
aramis_acg
parent
1ebd116dff
commit
56eb2dd7ee
|
|
@ -0,0 +1,29 @@
|
||||||
|
The Clipper code library, the "Software" (that includes Delphi, C++ & C#
|
||||||
|
source code, accompanying samples and documentation), has been released
|
||||||
|
under the following license, terms and conditions:
|
||||||
|
|
||||||
|
Boost Software License - Version 1.0 - August 17th, 2003
|
||||||
|
http://www.boost.org/LICENSE_1_0.txt
|
||||||
|
|
||||||
|
Permission is hereby granted, free of charge, to any person or organization
|
||||||
|
obtaining a copy of the software and accompanying documentation covered by
|
||||||
|
this license (the "Software") to use, reproduce, display, distribute,
|
||||||
|
execute, and transmit the Software, and to prepare derivative works of the
|
||||||
|
Software, and to permit third-parties to whom the Software is furnished to
|
||||||
|
do so, all subject to the following:
|
||||||
|
|
||||||
|
The copyright notices in the Software and this entire statement, including
|
||||||
|
the above license grant, this restriction and the following disclaimer,
|
||||||
|
must be included in all copies of the Software, in whole or in part, and
|
||||||
|
all derivative works of the Software, unless such copies or derivative
|
||||||
|
works are solely in the form of machine-executable object code generated by
|
||||||
|
a source language processor.
|
||||||
|
|
||||||
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
|
||||||
|
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
|
||||||
|
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
|
||||||
|
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
||||||
|
DEALINGS IN THE SOFTWARE.
|
||||||
|
|
||||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,302 @@
|
||||||
|
/*******************************************************************************
|
||||||
|
* *
|
||||||
|
* Author : Angus Johnson *
|
||||||
|
* Version : 4.6.3 *
|
||||||
|
* Date : 11 November 2011 *
|
||||||
|
* Website : http://www.angusj.com *
|
||||||
|
* Copyright : Angus Johnson 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 Max K. Agoston *
|
||||||
|
* Springer; 1 edition (January 4, 2005) *
|
||||||
|
* http://books.google.com/books?q=vatti+clipping+agoston *
|
||||||
|
* *
|
||||||
|
* See also: *
|
||||||
|
* "Polygon Offsetting by Computing Winding Numbers" *
|
||||||
|
* Paper no. DETC2005-85513 pp. 565-575 *
|
||||||
|
* ASME 2005 International Design Engineering Technical Conferences *
|
||||||
|
* and Computers and Information in Engineering Conference (IDETC/CIE2005) *
|
||||||
|
* September 24–28, 2005 , Long Beach, California, USA *
|
||||||
|
* http://www.me.berkeley.edu/~mcmains/pubs/DAC05OffsetPolygon.pdf *
|
||||||
|
* *
|
||||||
|
*******************************************************************************/
|
||||||
|
|
||||||
|
#ifndef clipper_hpp
|
||||||
|
#define clipper_hpp
|
||||||
|
|
||||||
|
#include <vector>
|
||||||
|
#include <stdexcept>
|
||||||
|
#include <cstring>
|
||||||
|
#include <cstdlib>
|
||||||
|
#include <ostream>
|
||||||
|
|
||||||
|
namespace ClipperLib {
|
||||||
|
|
||||||
|
enum ClipType { ctIntersection, ctUnion, ctDifference, ctXor };
|
||||||
|
enum PolyType { ptSubject, ptClip };
|
||||||
|
//By far the most widely used winding rules for polygon filling are
|
||||||
|
//EvenOdd & NonZero (GDI, GDI+, XLib, OpenGL, Cairo, AGG, Quartz, SVG, Gr32)
|
||||||
|
//Others rules include Positive, Negative and ABS_GTR_EQ_TWO (only in OpenGL)
|
||||||
|
//see http://glprogramming.com/red/chapter11.html
|
||||||
|
enum PolyFillType { pftEvenOdd, pftNonZero, pftPositive, pftNegative };
|
||||||
|
|
||||||
|
typedef signed long long long64;
|
||||||
|
typedef unsigned long long ulong64;
|
||||||
|
|
||||||
|
struct IntPoint {
|
||||||
|
public:
|
||||||
|
long64 X;
|
||||||
|
long64 Y;
|
||||||
|
IntPoint(long64 x = 0, long64 y = 0): X(x), Y(y) {};
|
||||||
|
friend std::ostream& operator <<(std::ostream &s, IntPoint &p);
|
||||||
|
};
|
||||||
|
|
||||||
|
typedef std::vector< IntPoint > Polygon;
|
||||||
|
typedef std::vector< Polygon > Polygons;
|
||||||
|
|
||||||
|
std::ostream& operator <<(std::ostream &s, Polygon &p);
|
||||||
|
std::ostream& operator <<(std::ostream &s, Polygons &p);
|
||||||
|
|
||||||
|
struct ExPolygon {
|
||||||
|
Polygon outer;
|
||||||
|
Polygons holes;
|
||||||
|
};
|
||||||
|
typedef std::vector< ExPolygon > ExPolygons;
|
||||||
|
|
||||||
|
enum JoinType { jtSquare, jtMiter, jtRound };
|
||||||
|
|
||||||
|
bool Orientation(const Polygon &poly);
|
||||||
|
double Area(const Polygon &poly);
|
||||||
|
void OffsetPolygons(const Polygons &in_polys, Polygons &out_polys,
|
||||||
|
double delta, JoinType jointype = jtSquare, double MiterLimit = 2);
|
||||||
|
|
||||||
|
void ReversePoints(Polygon& p);
|
||||||
|
void ReversePoints(Polygons& p);
|
||||||
|
|
||||||
|
//used internally ...
|
||||||
|
enum EdgeSide { esLeft, esRight };
|
||||||
|
enum IntersectProtects { ipNone = 0, ipLeft = 1, ipRight = 2, ipBoth = 3 };
|
||||||
|
|
||||||
|
struct TEdge {
|
||||||
|
long64 xbot;
|
||||||
|
long64 ybot;
|
||||||
|
long64 xcurr;
|
||||||
|
long64 ycurr;
|
||||||
|
long64 xtop;
|
||||||
|
long64 ytop;
|
||||||
|
double dx;
|
||||||
|
long64 tmpX;
|
||||||
|
PolyType polyType;
|
||||||
|
EdgeSide side;
|
||||||
|
int windDelta; //1 or -1 depending on winding direction
|
||||||
|
int windCnt;
|
||||||
|
int windCnt2; //winding count of the opposite polytype
|
||||||
|
int outIdx;
|
||||||
|
TEdge *next;
|
||||||
|
TEdge *prev;
|
||||||
|
TEdge *nextInLML;
|
||||||
|
TEdge *nextInAEL;
|
||||||
|
TEdge *prevInAEL;
|
||||||
|
TEdge *nextInSEL;
|
||||||
|
TEdge *prevInSEL;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct IntersectNode {
|
||||||
|
TEdge *edge1;
|
||||||
|
TEdge *edge2;
|
||||||
|
IntPoint pt;
|
||||||
|
IntersectNode *next;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct LocalMinima {
|
||||||
|
long64 Y;
|
||||||
|
TEdge *leftBound;
|
||||||
|
TEdge *rightBound;
|
||||||
|
LocalMinima *next;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct Scanbeam {
|
||||||
|
long64 Y;
|
||||||
|
Scanbeam *next;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct OutPt; //forward declaration
|
||||||
|
|
||||||
|
struct OutRec {
|
||||||
|
int idx;
|
||||||
|
bool isHole;
|
||||||
|
OutRec *FirstLeft;
|
||||||
|
OutRec *AppendLink;
|
||||||
|
OutPt *pts;
|
||||||
|
OutPt *bottomPt;
|
||||||
|
TEdge *bottomE1;
|
||||||
|
TEdge *bottomE2;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct OutPt {
|
||||||
|
int idx;
|
||||||
|
IntPoint pt;
|
||||||
|
OutPt *next;
|
||||||
|
OutPt *prev;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct JoinRec {
|
||||||
|
IntPoint pt1a;
|
||||||
|
IntPoint pt1b;
|
||||||
|
int poly1Idx;
|
||||||
|
IntPoint pt2a;
|
||||||
|
IntPoint pt2b;
|
||||||
|
int poly2Idx;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct HorzJoinRec {
|
||||||
|
TEdge *edge;
|
||||||
|
int savedIdx;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct IntRect { long64 left; long64 top; long64 right; long64 bottom; };
|
||||||
|
|
||||||
|
typedef std::vector < OutRec* > PolyOutList;
|
||||||
|
typedef std::vector < TEdge* > EdgeList;
|
||||||
|
typedef std::vector < JoinRec* > JoinList;
|
||||||
|
typedef std::vector < HorzJoinRec* > HorzJoinList;
|
||||||
|
|
||||||
|
//ClipperBase is the ancestor to the Clipper class. It should not be
|
||||||
|
//instantiated directly. This class simply abstracts the conversion of sets of
|
||||||
|
//polygon coordinates into edge objects that are stored in a LocalMinima list.
|
||||||
|
class ClipperBase
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
ClipperBase();
|
||||||
|
virtual ~ClipperBase();
|
||||||
|
bool AddPolygon(const Polygon &pg, PolyType polyType);
|
||||||
|
bool AddPolygons( const Polygons &ppg, PolyType polyType);
|
||||||
|
virtual void Clear();
|
||||||
|
IntRect GetBounds();
|
||||||
|
protected:
|
||||||
|
void DisposeLocalMinimaList();
|
||||||
|
TEdge* AddBoundsToLML(TEdge *e);
|
||||||
|
void PopLocalMinima();
|
||||||
|
virtual void Reset();
|
||||||
|
void InsertLocalMinima(LocalMinima *newLm);
|
||||||
|
LocalMinima *m_CurrentLM;
|
||||||
|
LocalMinima *m_MinimaList;
|
||||||
|
bool m_UseFullRange;
|
||||||
|
EdgeList m_edges;
|
||||||
|
};
|
||||||
|
|
||||||
|
class Clipper : public virtual ClipperBase
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
Clipper();
|
||||||
|
~Clipper();
|
||||||
|
bool Execute(ClipType clipType,
|
||||||
|
Polygons &solution,
|
||||||
|
PolyFillType subjFillType = pftEvenOdd,
|
||||||
|
PolyFillType clipFillType = pftEvenOdd);
|
||||||
|
bool Execute(ClipType clipType,
|
||||||
|
ExPolygons &solution,
|
||||||
|
PolyFillType subjFillType = pftEvenOdd,
|
||||||
|
PolyFillType clipFillType = pftEvenOdd);
|
||||||
|
void Clear();
|
||||||
|
bool ReverseSolution() {return m_ReverseOutput;};
|
||||||
|
void ReverseSolution(bool value) {m_ReverseOutput = value;};
|
||||||
|
protected:
|
||||||
|
void Reset();
|
||||||
|
virtual bool ExecuteInternal(bool fixHoleLinkages);
|
||||||
|
private:
|
||||||
|
PolyOutList m_PolyOuts;
|
||||||
|
JoinList m_Joins;
|
||||||
|
HorzJoinList m_HorizJoins;
|
||||||
|
ClipType m_ClipType;
|
||||||
|
Scanbeam *m_Scanbeam;
|
||||||
|
TEdge *m_ActiveEdges;
|
||||||
|
TEdge *m_SortedEdges;
|
||||||
|
IntersectNode *m_IntersectNodes;
|
||||||
|
bool m_ExecuteLocked;
|
||||||
|
PolyFillType m_ClipFillType;
|
||||||
|
PolyFillType m_SubjFillType;
|
||||||
|
bool m_ReverseOutput;
|
||||||
|
void DisposeScanbeamList();
|
||||||
|
void SetWindingCount(TEdge& edge);
|
||||||
|
bool IsEvenOddFillType(const TEdge& edge) const;
|
||||||
|
bool IsEvenOddAltFillType(const TEdge& edge) const;
|
||||||
|
void InsertScanbeam(const long64 Y);
|
||||||
|
long64 PopScanbeam();
|
||||||
|
void InsertLocalMinimaIntoAEL(const long64 botY);
|
||||||
|
void InsertEdgeIntoAEL(TEdge *edge);
|
||||||
|
void AddEdgeToSEL(TEdge *edge);
|
||||||
|
void CopyAELToSEL();
|
||||||
|
void DeleteFromSEL(TEdge *e);
|
||||||
|
void DeleteFromAEL(TEdge *e);
|
||||||
|
void UpdateEdgeIntoAEL(TEdge *&e);
|
||||||
|
void SwapPositionsInSEL(TEdge *edge1, TEdge *edge2);
|
||||||
|
bool IsContributing(const TEdge& edge) const;
|
||||||
|
bool IsTopHorz(const long64 XPos);
|
||||||
|
void SwapPositionsInAEL(TEdge *edge1, TEdge *edge2);
|
||||||
|
void DoMaxima(TEdge *e, long64 topY);
|
||||||
|
void ProcessHorizontals();
|
||||||
|
void ProcessHorizontal(TEdge *horzEdge);
|
||||||
|
void AddLocalMaxPoly(TEdge *e1, TEdge *e2, const IntPoint &pt);
|
||||||
|
void AddLocalMinPoly(TEdge *e1, TEdge *e2, const IntPoint &pt);
|
||||||
|
void AppendPolygon(TEdge *e1, TEdge *e2);
|
||||||
|
void DoEdge1(TEdge *edge1, TEdge *edge2, const IntPoint &pt);
|
||||||
|
void DoEdge2(TEdge *edge1, TEdge *edge2, const IntPoint &pt);
|
||||||
|
void DoBothEdges(TEdge *edge1, TEdge *edge2, const IntPoint &pt);
|
||||||
|
void IntersectEdges(TEdge *e1, TEdge *e2,
|
||||||
|
const IntPoint &pt, IntersectProtects protects);
|
||||||
|
OutRec* CreateOutRec();
|
||||||
|
void AddOutPt(TEdge *e, TEdge *altE, const IntPoint &pt);
|
||||||
|
void DisposeAllPolyPts();
|
||||||
|
void DisposeOutRec(PolyOutList::size_type index, bool ignorePts = false);
|
||||||
|
bool ProcessIntersections(const long64 botY, const long64 topY);
|
||||||
|
void AddIntersectNode(TEdge *e1, TEdge *e2, const IntPoint &pt);
|
||||||
|
void BuildIntersectList(const long64 botY, const long64 topY);
|
||||||
|
void ProcessIntersectList();
|
||||||
|
void ProcessEdgesAtTopOfScanbeam(const long64 topY);
|
||||||
|
void BuildResult(Polygons& polys);
|
||||||
|
void BuildResultEx(ExPolygons& polys);
|
||||||
|
void SetHoleState(TEdge *e, OutRec *OutRec);
|
||||||
|
void DisposeIntersectNodes();
|
||||||
|
bool FixupIntersections();
|
||||||
|
void FixupOutPolygon(OutRec &outRec);
|
||||||
|
bool IsHole(TEdge *e);
|
||||||
|
void FixHoleLinkage(OutRec *outRec);
|
||||||
|
void CheckHoleLinkages1(OutRec *outRec1, OutRec *outRec2);
|
||||||
|
void CheckHoleLinkages2(OutRec *outRec1, OutRec *outRec2);
|
||||||
|
void AddJoin(TEdge *e1, TEdge *e2, int e1OutIdx = -1, int e2OutIdx = -1);
|
||||||
|
void ClearJoins();
|
||||||
|
void AddHorzJoin(TEdge *e, int idx);
|
||||||
|
void ClearHorzJoins();
|
||||||
|
void JoinCommonEdges(bool fixHoleLinkages);
|
||||||
|
};
|
||||||
|
|
||||||
|
//------------------------------------------------------------------------------
|
||||||
|
//------------------------------------------------------------------------------
|
||||||
|
|
||||||
|
class clipperException : public std::exception
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
clipperException(const char* description): m_descr(description) {}
|
||||||
|
virtual ~clipperException() throw() {}
|
||||||
|
virtual const char* what() const throw() {return m_descr.c_str();}
|
||||||
|
private:
|
||||||
|
std::string m_descr;
|
||||||
|
};
|
||||||
|
//------------------------------------------------------------------------------
|
||||||
|
|
||||||
|
} //ClipperLib namespace
|
||||||
|
|
||||||
|
#endif //clipper_hpp
|
||||||
|
|
||||||
|
|
||||||
Loading…
Reference in New Issue