//经纬度转Web墨卡托

dvec3 CMathEngine::lonLat2WebMercator(dvec3  lonLat)

{

    dvec3  mercator;

    double x = lonLat.x *20037508.34/;

    double y = log(tan((+lonLat.y)*PI/))/(PI/);

    y = y *20037508.34/;

    mercator.x = x;

    mercator.y = y;

    return mercator;

}

//Web墨卡托转经纬度

dvec3 CMathEngine::WebMercator2lonLat( dvec3   mercator )

{

    dvec3 lonLat;

    double x = mercator.x/20037508.34*;

    double y = mercator.y/20037508.34*;

    y= /PI*(*atan(exp(y*PI/))-PI/);

    lonLat.x = x;

    lonLat.y = y;

    return lonLat;

}

//经度转墨卡托

function handle_x(x) {

 return (x / 180.0) * 20037508.34;

}

//纬度度转墨卡托

function handle_y(y) {

 if (y > 85.05112) {

  y = 85.05112;

 }

 if (y < -85.05112) {

  y = -85.05112;

 }

 y = (Math.PI / 180.0) * y;

 var tmp = Math.PI / 4.0 + y / 2.0;

 return 20037508.34 * Math.log(Math.tan(tmp)) / Math.PI;

}

//墨卡托转经度

function handle_me_x(x)

{

 return x/20037508.34*;

}

//墨卡托转纬度

function handle_me_y(my)

{

  var mmy = my/20037508.34*;

  y= /Math.PI*(*Math.atan(Math.exp(mmy*Math.PI/))-Math.PI/);

  return y;

}