luoxianglin0970的专栏

var DEF_PI =Math.PI;// 3.14159265359var DEF_2PI =2 *Math.PI;// 6.28318530712var DEF_PI180 =Math.PI/ 180.0;// 0.01745329252var DEF_R =6370996.81;// radius of earth// 利

var DEF_PI = Math.PI; // 3.14159265359var DEF_2PI = 2 * Math.PI; // 6.28318530712var DEF_PI180 = Math.PI / 180.0; // 0.01745329252var DEF_R = 6370996.81; // radius of earthfunction initMap(map