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初次学习HTML,请坛友帮忙改几行代码.就是一个GPS在网页中显示,这里是自动生成GPS点,我想改成固定的`12个点,这12个点为:
points=[(31.949515,118.697229),
(31.930135,118.696985),
(31.940556,118.696913),
(31.911091,118.697034),
(31.901475,118.697531),
(31.951647,118.698275),
(31.961669,118.698371),
(31.970135,118.696985),
(31.980556,118.696913),
(31.991091,118.697034),
(31.924091,118.697034),
(31.902475,118.697531)]
代码如下:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}
</style>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=9fb983ecd9b505f8fedcc9ab07c65e3e">
</script>
<title>轨迹动态展示</title>
</head>
<body>
<div id="allmap"></div>
</body>
</html>
<script type="text/javascript">
//数据准备,
var points = [];//原始点信息数组
var bPoints = [];//百度化坐标数组。用于更新显示范围。
//创建标注点并添加到地图中
function addMarker(points) {
//循环建立标注点
for(var i=0, pointsLen = points.length; i<pointsLen; i++) {
var point = new BMap.Point(points[i].lng, points[i].lat); //将标注点转化成地图上的点
var marker = new BMap.Marker(point); //将点转化成标注点
map.addOverlay(marker); //将标注点添加到地图上
//添加监听事件
(function() {
var thePoint = points[i];
marker.addEventListener("click",
function() {
showInfo(this,thePoint);
});
})();
}
}
//添加线
function addLine(points){
var linePoints = [],pointsLen = points.length,i,polyline;
if(pointsLen == 0){
return;
}
// 创建标注对象并添加到地图
for(i = 0;i <pointsLen;i++){
linePoints.push(new BMap.Point(points[i].lng,points[i].lat));
}
polyline = new BMap.Polyline(linePoints, {strokeColor:"green", strokeWeight:5, strokeOpacity:1}); //创建折线
map.addOverlay(polyline); //增加折线
}
//随机生成新的点，加入到轨迹中。
function dynamicLine(){
var lng = 112+getRandom(100)*0.01;
var lat = 26+getRandom(100)*0.01;
var id = getRandom(1000);
var point = {"lng":lng,"lat":lat,"status":1,"id":id}
var makerPoints = [];
var newLinePoints = [];
var len;
makerPoints.push(point);
addMarker(makerPoints);//增加对应该的轨迹点
points.push(point);
bPoints.push(new BMap.Point(lng,lat));
len = points.length;
newLinePoints = points.slice(len-2, len);//最后两个点用来画线。
addLine(newLinePoints);//增加轨迹线
setZoom(bPoints);
setTimeout(dynamicLine, 1000);
}
// 获取随机数
function getRandom(n){
return Math.floor(Math.random()*n+1)
}
//根据点信息实时更新地图显示范围，让轨迹完整显示。设置新的中心点和显示级别
function setZoom(bPoints){
var view = map.getViewport(eval(bPoints));
var mapZoom = view.zoom;
var centerPoint = view.center;
map.centerAndZoom(centerPoint,mapZoom);
}
//创建地图
var map = new BMap.Map("allmap");
map.centerAndZoom(new BMap.Point(116.404, 39.915), 11); // 设置中心点
map.centerAndZoom( "衡阳");
map.setCurrentCity("衡阳"); //设置为衡阳
map.addControl(new BMap.MapTypeControl()); //可拖拽
map.enableScrollWheelZoom(true); //滚轮实现方法缩小
dynamicLine();
</script>
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阿莫论坛20周年了！感谢大家的支持与爱护！！
月入3000的是反美的。收入3万是亲美的。收入30万是移民美国的。收入300万是取得绿卡后回国，教唆那些3000来反美的！
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发表于 2021-7-9 15:47:16
楼主