ugkgeometry.h

linux下一款GIS程序源码

// ugkgeometry.h: interface for the UGKGeometry class.

/************************************************************************/
/*                             UGKGeometry                              */
/************************************************************************/
/**
 * Abstract base class for all geometry classes.
 */

#ifndef  UGKGeometry_H
#define  UGKGeometry_H


#include "ugkglobal.h"

class UGKGeometry  
{
public:
	UGKGeometry();
	virtual ~UGKGeometry();

	virtual int getDimension() const = 0; //物体是几维?
	virtual int getCoordinateDimension() const = 0; //坐标维数
	virtual UGKBool  IsEmpty() const { return 0; } 
	virtual UGKBool  IsSimple() const { return 1; }
	virtual void        empty() = 0;
	virtual UGKGeometry *clone() const= 0;
	virtual void getEnvelope( UGKEnvelope * psEnvelope ) const = 0;

	virtual UGKBool  Intersects( UGKGeometry * )const ; 
	virtual UGKBool  Equals( UGKGeometry * ) const = 0;
	virtual UGKBool  Disjoint( const UGKGeometry * ) const; 
	virtual UGKBool  Touches( const UGKGeometry * ) const; 
	virtual UGKBool  Crosses( const UGKGeometry * ) const; 
	virtual UGKBool  Within( const UGKGeometry * ) const;
	virtual UGKBool  Contains( const UGKGeometry * ) const; 
	virtual UGKBool  Overlaps( const UGKGeometry * ) const;

	virtual int WkbSize() const = 0;
	virtual UGKwkbGeometryType getGeometryType() const = 0;
	virtual const char *getGeometryName() const = 0;
	virtual void   flattenTo2D() = 0;
	virtual void closeRings();


};

#endif