根据经纬度判断车辆是否进度电子围栏

public class GPS {


private String strLat; //标准的纬度
private String strLon; //标准的经度

private double dDFLat; //纬度。单位：度分
private double dDFLon; //经度。单位：度分

private double dFLat; //纬度。单位：分
private double dFLon; //经度。单位：分

private double dDLat; //纬度。单位：度
private double dDLon; //经度。单位：度


private int iNetLat; //纬度的网格坐标
private int iNetLon; //经度的网格坐标

private boolean isValid; //GPS是否有效
private boolean isNetValid; //网格坐标是否有效

public boolean isValid() {
return isValid;
}

public boolean isNetValid() {
return isNetValid;
}

public String getGpsCode()
{
return strLat + "," + strLon;
}


public GPS() {
this.strLat = "";
this.strLon = "";

this.dDFLat = 0.0;
this.dDFLon = 0.0;

this.dFLat  = 0.0;
this.dFLon  = 0.0;

this.dDLat  = 0.0;
this.dDLon  = 0.0;


this.iNetLat = 0;
this.iNetLon = 0;

this.isValid = false;