#ifndef _TCOVERRELEATIONMANAGER_H__
#define _TCOVERRELEATIONMANAGER_H__

#if _MSC_VER > 1000
#pragma once
#endif

class TDbInterfacesObj;
class TCoverReleationManager  
{
public:
			 TCoverReleationManager();
	virtual ~TCoverReleationManager();
	
	// 更新遮挡显示
	BOOL UpdateCoverDisplay(AcDbObjectIdArray& arIds);

	// 更新遮挡显示
	BOOL UpdateCoverDisplay(TDbInterfacesObj* pObj);

	// 更新遮挡显示
	BOOL UpdateCoverDisplay(AcDbObjectId& id);

	// 排序支持
	typedef struct PtOnCrItem
	{
		AcGePoint3d m_ptGeOn;
		AcDbCurve * m_pCurve;
	} PTONCRITEM,* PPTONCRITEM;

protected:

	// 选择影响遮挡的实体 [ssget]
	BOOL SelectEntityByExt(TDbInterfacesObj* pObj,AcDbObjectIdArray& arIDs);

	// 提取两条曲线的遮挡曲线段
	BOOL CoverIntersectWith(TComplexCurve& extThisComplex,TComplexCurve& extOtherComplex,
							TComplexCurve& extThisCovered,TComplexCurve& extOtherCovered,
							AcDbVoidPtrArray&  arThisFaces,AcDbVoidPtrArray& arOtherFaces,
							BOOL bThisCoverByOther = TRUE,BOOL bIsInsideCurves = FALSE);

	// 复杂图元 解释到 db 实体曲线
	BOOL ComplexCurve2DbCurves(TComplexCurve& ext,AcDbVoidPtrArray& arThisCurs,AcDbIntArray& arGsMarks);

	// Z 方向投影排序点
	BOOL SortPointsProjectZ(AcGePoint3dArray& points,AcDbCurve * pCurve);

	//
	void OrthProject2ThisPlane(AcGePoint3d& ptGeT,AcDbFace* pFace);
};

#endif //_TCOVERRELEATIONMANAGER_H__