//-----------------------------------------------------------------------------+
// Copyright (C), 1998-2007, SH Software Co. Ltd.
// = FileName	:   CPloygon.h
// = Version	:   ver2.0
// = Author		:   zjq
// = CreateDate	:   2002-09-09
// = Description:   类的声明 描述单连通区域
// = Maintainers: 
//                  
//-----------------------------------------------------------------------------+
#ifndef _BPLOYGON_H_
#define _BPLOYGON_H_

#ifndef _BPLOYLINE_H_
#include "CPloyLine.h"
#endif

#ifndef _DLIST_H_
#include "DList.h"
#endif

#ifndef _C3DFACE_H_
#include "C3DFace.h"
#endif

#ifndef _XTRIANGLE_H_
#include "XTriangle.h"
#endif

class CBNode;
class CPloygon;
typedef CTypedPtrList<CObList, CPloygon*> TBPolygonList;

class GEOAPI CPloygon : public CPloyLine 
{
public:
	CPloygon();
	CPloygon(const CPloyLine& bline);
#if ARX > 17
	CPloygon(const CPloygon& poly);
#endif
	virtual ~CPloygon();

	//返回下一结点,当作封闭环
	virtual CBNode* GetNextNode(CBNode* pNode);    
	//返回上一结点,当作封闭环
	virtual CBNode* GetPreNode(CBNode* pNode);      
	
	//判断多边形pPolygon是否在此多边形内部
	//返回0：相交
	//如果返回1，则包含pPolygon，
	//如果返回2，则被pPolygon包含
	//如果返回3，则与pPolygon互不包含
	BOOL IsSurrounded(CPloyLine* pPolygon);          
	
	//释放内存
	void ReleaseRgnLst(TBPolygonList& sRgnList); 
	
	//是否平行于XY平面
	BOOL IsParallelToXY(double tol);    
	
	//根据此面创建m_plane
	BOOL CreatAcGePlane();         
	
	//构造从当前坐标系到此平面所在的坐标系的变换矩阵
	AcGeMatrix3d GetUCSToECSMat();      
	
	//构造从此平面所在的坐标系到当前坐标系的变换矩阵
	AcGeMatrix3d GetECSToUCSMat();        
	
	//将此区域通过矩阵mat进行变换
	void TransformBy(AcGeMatrix3d& mat);      
	
	//返回下下一结点
	CBNode* GetNextNode2(CBNode* pNode);     
	
	//三角化单连通区域，并将三角形存于sRgnList
	BOOL TrianglizePolygon(TBPolygonList& sRgnList);   
	
	//将此区域一分为二直到全为三角形，并将三角形存于sRgnList
	void CutDown(TBPolygonList& sRgnList);             
	
	//测试pTestNode是否在以pNode为结点的前后两边内部
	BOOL IsPtInsideRgn(CBNode* pNode,CBNode* pTestNode);   
	
	//连线PT1-PT2是否于其他边相交
	BOOL IsCrossOtherEdges(CBNode* pNode1,CBNode* pNode2);    
	
	//pNode1和pNode2组成的连线是否可以将此区域分为两个单连通域
	BOOL IsASuitableDivLine(CBNode* pNode1,CBNode* pNode2);  
	
	//以结点1-2为分界将此区域一分为二
	void DivideTo2Polygon(CBNode* pNode1,CBNode* pNode2,CPloygon*& pRgn1,CPloygon*& pRgn2);
	
	//将此结点转化成3DFACE
	AcDbFace* ConvertTo3dFace();    
	
	//将此结点转化成3DFACE
	XTriangle* ConvertToTriangle();             
	
	//将此区域三角化为一系列3DFACE
	BOOL ConvertTo3DFaces(C3DFaceList& face3DList);     
	
	//将此区域三角化为一系列3DFACE
	BOOL ConvertToTriangle(DList<XTriangle> &lstRes);    
	
public:
	//三角化后的三角区域链表
	TBPolygonList m_childSRList;           
	//m_plane是否已经构造成功
	BOOL m_bPlaned;                   
	//所在平面
	AcGePlane m_plane;                  

private:
	//pt是否在pt11-pt12所在线段上
	BOOL IsOnLineSeg(AcGePoint3d pt11,AcGePoint3d pt12,AcGePoint3d pt,double tol = TOL);
};

#endif