ugklinearring.h

linux下一款GIS程序源码

// ugklinearring.h: interface for the UGKLinearRing class.
//
/************************************************************************/
/*                            UGKLinearRing                             */
/*                                                                      */
/*      This is an alias for UGKLineString for now.                     */
/************************************************************************/
/*                  继承UGKLineString类                                 */


#ifndef  UGKLinearRing_H
#define  UGKLinearRing_H

#include "ugklinestring.h"

class UGKLinearRing : public UGKLineString  
{
private:
	friend class UGKPolygon; //友元

	virtual int _WkbSize( int b3D ) const;

public:
	UGKLinearRing();
	UGKLinearRing( UGKLinearRing * );
	virtual ~UGKLinearRing();

	virtual const char *getGeometryName() const;
	virtual UGKGeometry *clone() const;
	virtual int isClockwise() const;
	virtual void closeRings();
	virtual double get_Area() const;

	virtual int WkbSize() const;


};

#endif