//-----------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TPGeFace3D.h
// = Version	:   ver2.0
// = Author		:   xlc
// = CreateDate	:   2002-09-09
// = Description:   类的声明 空间任意曲面
// = Maintainers: 
//                  
//-----------------------------------------------------------------------------+
#ifndef _TPGEFACE3D_H_
#define _TPGEFACE3D_H_

#ifndef _TGOBJECT3D_H_
#include "TGObject3D.h"
#endif

#ifndef _TGOBJECTLIST_H_
#include "TGObjectList.h"
#endif

#ifndef _TGOBJECT_H_
#include "TGObject.h"
#endif

class GEOAPI TPGeFace3D : public TGObject3D
{
	DECLARE_RUN_TIME_CLASS(TPGeFace3D)
		
public:
	
	virtual ~TPGeFace3D();

	virtual bool IsClosed() const;

	virtual bool IsSelfCross() const;

	virtual double Area() const;
	
	virtual double Volume() const;

	virtual void Cut(const TGObject& obj,TGObjectList& left,TGObjectList& right,TGObjectList& mid) const;
	
	//不能是自交曲面!!
	//封闭曲面切割结果为左为内，右为外，不考虑曲面方向!不封闭曲面切割结果，左为下，右为上。
	//不封闭的有限曲线段切割时,要求其可以正确进行结果分发时的上下测试!!
	//子类需要加速才需要重载
	//重载 TGObject
	virtual bool IsInclude(const TGObject& obj) const;
};

#endif