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/*
* 离线地图城市坐标
* 文本文件必须以UTF-8编码存储，
* 格式:城市名称 经度 纬度
*/
var offlinemap _cities = [
[ '北京' , 116.427265 , 39.918698 ]
, [ '上海' , 121.472724 , 31.239761 ]
, [ '武汉' , 114.28398 , 30.601327 ]
, [ '成都' , 104.070606 , 30.59138 ]
, [ '广州' , 113.270404 , 23.159763 ]
, [ '重庆' , 106.595635 , 29.619598 ]
] ;
/* 城市数据映射
*
*/
var offlinemap _cityobj = new Object ( ) ;
for ( var i = 0 ; i < offlinemap _cities . length ; i ++ ) {
offlinemap _cityobj [ offlinemap _cities [ i ] [ 0 ] ] = [ offlinemap _cities [ i ] [ 1 ] , offlinemap _cities [ i ] [ 2 ] ] ;
}
/*
* 获得城市坐标
* 城市的坐标必须先存储在map_city.js
*/
var i _getCityPoint = function ( a ) {
if ( a in offlinemap _cityobj ) {
var pt = new BMap . Point ( offlinemap _cityobj [ a ] [ 0 ] , offlinemap _cityobj [ a ] [ 1 ] ) ;
return pt ;
}
alert ( 'map_city.js中未定义城市坐标:' + a ) ;
return false ;
} ;
/*
* 设置地图中心为某个城市
* 城市的坐标必须先存储在map_city.js
*/
var i _setCurrentCity = function ( map , a ) {
var pt = i _getCityPoint ( a ) ;
if ( pt ) {
map . setCenter ( pt ) ;
return pt ;
}
return false ;
} ;