#pragma once
#include <stdio.h>
//读写及操作dfg曲面

class  GSurface
{
public:
	GSurface();
	~GSurface();
	bool ReadDfg(FILE* fr);
	bool ReadDfg(const char* filename);
	bool WriteDfg(FILE* fw);
	bool WriteDfg(const char* filename);

	void Clear(void); //清空
	 int Create(int numx, int numy, double x0, double y0, double dx, double dy);
	 int Create(int numx, int numy, double x0, double y0, double dx, double dy, double* values, double zMin=-1E300, double zMax=1E300);
	 int XNum(void);
	 int YNum(void);
	 double X(int i);
	 double Y(int j);
	 double Z(int i, int j);
	 double Z(double x0, double y0);
     void setZ(int i, int j, double z);
//	 //只取断层外部的结点插值
//	 double Value(double x0, double y0, GPline* png);
	 bool IsInRange(double z0);
	 void CalcRange(double zMin = -1E300, double zMax = 1E300);
	 double DeltX();
	 double DeltY();
     double* GetRange();

protected:
	int 	m_num[2];		
	double	m_P0[2];		
	double	m_delt[2];		
	double	m_range[2];	
	double* m_u;


};