//-----------------------------------------------------------------------------+
// Copyright (C), 1998-2007, SH Software Co. Ltd.
// = FileName	:   XCurve 类
// = Version	:   ver2.0
// = Author		:   zjq
// = CreateDate	:   2002-09-09
// = Description:   XCurve 类声明
// = Maintainers: 
//                  
//-----------------------------------------------------------------------------+
#ifndef _XCURVE_H_
#define _XCURVE_H_

#ifndef _XENTITY_H_
#include "XEntity.h"
#endif

class GEOAPI XCurve : public XEntity
{
public:

	virtual bool IsKindOf(TEntityId entType) const;
	virtual TEntityId Type() const;

	virtual void TransformBy(ads_matrix mat);
	virtual int GetExtend(XPoint &ptlow, XPoint &ptup) const;
	//图形长度，周长
	virtual ads_real GetLength() const;		
	virtual int Make(const TCHAR *szlay = NULL) const;
	virtual int MakeEntity(const Entity* pEntity) const;
	virtual int HitTest2d(const XPoint &ptTest) const;
	virtual int OSnap(int nMode, XPoint &ptPick) const;

protected:
			 XCurve();
	virtual ~XCurve();
};

#endif