?? mercator.java
字號:
package uk.ac.leeds.ccg.geotools.projections;
public abstract class Mercator implements Projection
{
public double[] project(double lon,double lat){
//do magic stuff
double p[] = new double[2];
double rx = (Math.PI/180d)*lon;
double ry = (Math.PI/180d)*lat;
p[0] = rx;
p[1] = Math.log(Math.tan(ry)+(1/Math.cos(ry)));
p[0] = p[0] * 180d/Math.PI;
p[1] = p[1] * 180d/Math.PI;
//System.out.println(lon+","+lat+" "+p[0]+","+p[1]);
return p;
}
public double[] unproject(double x,double y){
double p[] = new double[2];
double rx = (Math.PI/180d)*x;
double ry = (Math.PI/180d)*y;
p[0] = rx;
p[1] = 2*Math.atan(Math.pow(Math.E,ry))-(Math.PI/2d);
p[0] = p[0] * 180d/Math.PI;
p[1] = p[1] * 180d/Math.PI;
//System.out.println(lon+","+lat+" "+p[0]+","+p[1]);
return p;
}
}
?? 快捷鍵說明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -