本文介紹了js實現百度地圖同時顯示多個路書效果，主要是以自行車的還車地點作為實例，具體代碼如下：
啟動路書：
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=自己的ak"></script> <script type="text/javascript" src="js/lushu.js"></script><!--路書 -->
var BMapLib = window.BMapLib = BMapLib || {};
(function() {
var b, a = b = a || {
version : "1.5.0"
};
a.guid = "$BAIDU$";
(function() {
window[a.guid] = window[a.guid] || {};
a.dom = a.dom || {};
a.dom.g = function(e) {
if ("string" == typeof e || e instanceof String) {
return document.getElementById(e)
} else {
if (e && e.nodeName && (e.nodeType == 1 || e.nodeType == 9)) {
return e
}
}
return null
};
a.g = a.G = a.dom.g;
a.lang = a.lang || {};
a.lang.isString = function(e) {
return "[object String]" == Object.prototype.toString.call(e)
};
a.isString = a.lang.isString;
a.dom._g = function(e) {
if (a.lang.isString(e)) {
return document.getElementById(e)
}
return e
};
a._g = a.dom._g;
a.dom.getDocument = function(e) {
e = a.dom.g(e);
return e.nodeType == 9 ? e : e.ownerDocument || e.document
};
a.browser = a.browser || {};
a.browser.ie = a.ie = /msie (\d+\.\d+)/i.test(navigator.userAgent) ? (document.documentMode || +RegExp["\x241"])
: undefined;
a.dom.getComputedStyle = function(f, e) {
f = a.dom._g(f);
var h = a.dom.getDocument(f), g;
if (h.defaultView && h.defaultView.getComputedStyle) {
g = h.defaultView.getComputedStyle(f, null);
if (g) {
return g[e] || g.getPropertyValue(e)
}
}
return ""
};
a.dom._styleFixer = a.dom._styleFixer || {};
a.dom._styleFilter = a.dom._styleFilter || [];
a.dom._styleFilter.filter = function(f, j, k) {
for (var e = 0, h = a.dom._styleFilter, g; g = h[e]; e++) {
if (g = g[k]) {
j = g(f, j)
}
}
return j
};
a.string = a.string || {};
a.string.toCamelCase = function(e) {
if (e.indexOf("-") < 0 && e.indexOf("_") < 0) {
return e
}
return e.replace(/[-_][^-_]/g, function(f) {
return f.charAt(1).toUpperCase()
})
};
a.dom.getStyle = function(g, f) {
var i = a.dom;
g = i.g(g);
f = a.string.toCamelCase(f);
var h = g.style[f] || (g.currentStyle ? g.currentStyle[f] : "")
|| i.getComputedStyle(g, f);
if (!h) {
var e = i._styleFixer[f];
if (e) {
h = e.get ? e.get(g) : a.dom.getStyle(g, e)
}
}
if (e = i._styleFilter) {
h = e.filter(f, h, "get")
}
return h
};
a.getStyle = a.dom.getStyle;
a.dom._NAME_ATTRS = (function() {
var e = {
cellpadding : "cellPadding",
cellspacing : "cellSpacing",
colspan : "colSpan",
rowspan : "rowSpan",
valign : "vAlign",
usemap : "useMap",
frameborder : "frameBorder"
};
if (a.browser.ie < 8) {
e["for"] = "htmlFor";
e["class"] = "className"
} else {
e.htmlFor = "for";
e.className = "class"
}
return e
})();
a.dom.setAttr = function(f, e, g) {
f = a.dom.g(f);
if ("style" == e) {
f.style.cssText = g
} else {
e = a.dom._NAME_ATTRS[e] || e;
f.setAttribute(e, g)
}
return f
};
a.setAttr = a.dom.setAttr;
a.dom.setAttrs = function(g, e) {
g = a.dom.g(g);
for ( var f in e) {
a.dom.setAttr(g, f, e[f])
}
return g
};
a.setAttrs = a.dom.setAttrs;
a.dom.create = function(g, e) {
var h = document.createElement(g), f = e || {};
return a.dom.setAttrs(h, f)
};
a.object = a.object || {};
a.extend = a.object.extend = function(g, e) {
for ( var f in e) {
if (e.hasOwnProperty(f)) {
g[f] = e[f]
}
}
return g
}
})();
var c = BMapLib.LuShu = function(g, f, e) {
if (!f || f.length < 1) {
return
}
this._map = g;
this._path = f;
this.i = 0;
this._setTimeoutQuene = [];
this._projection = this._map.getMapType().getProjection();
this._opts = {
icon : null,
speed : 4000,
defaultContent : ""
};
this._setOptions(e);
this._rotation = 0;
if (!this._opts.icon instanceof BMap.Icon) {
this._opts.icon = defaultIcon
}
};
c.prototype._setOptions = function(e) {
if (!e) {
return
}
for ( var f in e) {
if (e.hasOwnProperty(f)) {
this._opts[f] = e[f]
}
}
};
c.prototype.start = function() {
var f = this, e = f._path.length;
if (f.i && f.i < e - 1) {
if (!f._fromPause) {
return
} else {
if (!f._fromStop) {
f._moveNext(++f.i)
}
}
} else {
f._addMarker();
f._timeoutFlag = setTimeout(function() {
f._addInfoWin();
if (f._opts.defaultContent == "") {
f.hideInfoWindow()
}
f._moveNext(f.i)
}, 400)
}
this._fromPause = false;
this._fromStop = false
}, c.prototype.stop = function() {
this.i = 0;
this._fromStop = true;
clearInterval(this._intervalFlag);
this._clearTimeout();
for (var g = 0, f = this._opts.landmarkPois, e = f.length; g < e; g++) {
f[g].bShow = false
}
};
c.prototype.pause = function() {
clearInterval(this._intervalFlag);
this._fromPause = true;
this._clearTimeout()
};
c.prototype.hideInfoWindow = function() {
this._overlay._div.style.visibility = "hidden"
};
c.prototype.showInfoWindow = function() {
this._overlay._div.style.visibility = "visible"
};
a.object
.extend(
c.prototype,
{
_addMarker : function(f) {
if (this._marker) {
this.stop();
this._map.removeOverlay(this._marker);
clearTimeout(this._timeoutFlag)
}
this._overlay
&& this._map.removeOverlay(this._overlay);
var e = new BMap.Marker(this._path[0]);
this._opts.icon && e.setIcon(this._opts.icon);
this._map.addOverlay(e);
e.setAnimation(BMAP_ANIMATION_DROP);
this._marker = e
},
_addInfoWin : function() {
var f = this;
var e = new d(f._marker.getPosition(),
f._opts.defaultContent);
e.setRelatedClass(this);
this._overlay = e;
this._map.addOverlay(e)
},
_getMercator : function(e) {
return this._map.getMapType().getProjection()
.lngLatToPoint(e)
},
_getDistance : function(f, e) {
return Math.sqrt(Math.pow(f.x - e.x, 2)
+ Math.pow(f.y - e.y, 2))
},
_move : function(n, j, m) {
var i = this, h = 0, e = 10, f = this._opts.speed
/ (1000 / e), l = this._projection
.lngLatToPoint(n), k = this._projection
.lngLatToPoint(j), g = Math.round(i
._getDistance(l, k)
/ f);
if (g < 1) {
i._moveNext(++i.i);
return
}
i._intervalFlag = setInterval(
function() {
if (h >= g) {
clearInterval(i._intervalFlag);
if (i.i > i._path.length) {
return
}
i._moveNext(++i.i)
} else {
h++;
var o = m(l.x, k.x, h, g), r = m(
l.y, k.y, h, g), q = i._projection
.pointToLngLat(new BMap.Pixel(
o, r));
if (h == 1) {
var p = null;
if (i.i - 1 >= 0) {
p = i._path[i.i - 1]
}
if (i._opts.enableRotation == true) {
i.setRotation(p, n, j)
}
if (i._opts.autoView) {
if (!i._map.getBounds()
.containsPoint(q)) {
i._map.setCenter(q)
}
}
}
i._marker.setPosition(q);
i._setInfoWin(q)
}
}, e)
},
setRotation : function(l, f, m) {
var j = this;
var e = 0;
f = j._map.pointToPixel(f);
m = j._map.pointToPixel(m);
if (m.x != f.x) {
var k = (m.y - f.y) / (m.x - f.x), g = Math
.atan(k);
e = g * 360 / (2 * Math.PI);
if (m.x < f.x) {
e = -e + 90 + 90
} else {
e = -e
}
j._marker.setRotation(-e)
} else {
var h = m.y - f.y;
var i = 0;
if (h > 0) {
i = -1
} else {
i = 1
}
j._marker.setRotation(-i * 90)
}
return
},
linePixellength : function(f, e) {
return Math.sqrt(Math.abs(f.x - e.x)
* Math.abs(f.x - e.x) + Math.abs(f.y - e.y)
* Math.abs(f.y - e.y))
},
pointToPoint : function(f, e) {
return Math.abs(f.x - e.x) * Math.abs(f.x - e.x)
+ Math.abs(f.y - e.y) * Math.abs(f.y - e.y)
},
_moveNext : function(e) {
var f = this;
if (e < this._path.length - 1) {
f._move(f._path[e], f._path[e + 1],
f._tween.linear)
}
},
_setInfoWin : function(g) {
var f = this;
if (!f._overlay) {
return
}
f._overlay.setPosition(g, f._marker.getIcon().size);
var e = f._troughPointIndex(g);
if (e != -1) {
clearInterval(f._intervalFlag);
f._overlay
.setHtml(f._opts.landmarkPois[e].html);
f._overlay.setPosition(g,
f._marker.getIcon().size);
f._pauseForView(e)
} else {
f._overlay.setHtml(f._opts.defaultContent)
}
},
_pauseForView : function(e) {
var g = this;
var f = setTimeout(function() {
g._moveNext(++g.i)
}, g._opts.landmarkPois[e].pauseTime * 1000);
g._setTimeoutQuene.push(f)
},
_clearTimeout : function() {
for ( var e in this._setTimeoutQuene) {
clearTimeout(this._setTimeoutQuene[e])
}
this._setTimeoutQuene.length = 0
},
_tween : {
linear : function(f, j, h, i) {
var e = f, l = j - f, g = h, k = i;
return l * g / k + e
}
},
_troughPointIndex : function(f) {
var h = this._opts.landmarkPois, j;
for (var g = 0, e = h.length; g < e; g++) {
if (!h[g].bShow) {
j = this._map.getDistance(new BMap.Point(
h[g].lng, h[g].lat), f);
if (j < 10) {
h[g].bShow = true;
return g
}
}
}
return -1
}
});
function d(e, f) {
this._point = e;
this._html = f
}
d.prototype = new BMap.Overlay();
d.prototype.initialize = function(e) {
var f = this._div = a.dom
.create(
"div",
{
style : "border:solid 1px #ccc;width:auto;min-width:50px;text-align:center;position:absolute;background:#fff;color:#000;font-size:12px;border-radius: 10px;padding:5px;white-space: nowrap;"
});
f.innerHTML = this._html;
e.getPanes().floatPane.appendChild(f);
this._map = e;
return f
};
d.prototype.draw = function() {
this.setPosition(this.lushuMain._marker.getPosition(),
this.lushuMain._marker.getIcon().size)
};
a.object.extend(d.prototype, {
setPosition : function(h, i) {
var f = this._map.pointToOverlayPixel(h), e = a.dom.getStyle(
this._div, "width"), g = a.dom
.getStyle(this._div, "height");
overlayW = parseInt(this._div.clientWidth || e, 10),
overlayH = parseInt(this._div.clientHeight || g, 10);
this._div.style.left = f.x - overlayW / 2 + "px";
this._div.style.bottom = -(f.y - i.height) + "px"
},
setHtml : function(e) {
this._div.innerHTML = e
},
setRelatedClass : function(e) {
this.lushuMain = e
}
})
})();
function showallrecord(starttime,endtime){//顯示多條開始結束時間之間的自行車路書
var bikeId=null;
$.getJSON("./GetBickIdServlet",function(json){
bikeId = json;//所有自行車編號
});
var json={
"StartTime":starttime,//開始時間
"EndTime":endtime//結束時間
};
//創建二維數組，例如pointArray[i]中i自行車編號，pointArray[i][j]為編號為i的自行車的所有借還站點信息
$.getJSON("./GetAllRecordServlet",{json:JSON.stringify(json)},function(json){
var j = 0;
var stationlonlist=new Array();
var stationlatlist=new Array();
var pointArray=new Array();
var bikeIdlist = new Array();
for(var i = 0; i < bikeId.length; i++){
stationlonlist[i] = new Array();
stationlatlist[i] = new Array();
pointArray[i] = new Array();
bikeIdlist[i] = bikeId[i].BikeId;
}
var tt = json.length < 200?json.length:200;//如果查詢出來的自行車借還站點記錄多於200條，則顯示200條。（待完善）
for (var row = 0; row < pointArray.length; row++) {
while (j < tt) {
var k = j;
var p = 0;
var stationlon = parseFloat(json[j].Stationlon);// String類型轉換成float類型
stationlonlist[row][p]=stationlon;// 將stationlon放到stationlonlist裡
var stationlat = parseFloat(json[j].Stationlat);
stationlatlist[row][p]=stationlat;// 將stationlat放到stationlatlist裡
pointArray[row][p] = new BMap.Point(stationlon,stationlat);
while (bikeIdlist[row] == json[k + 1].BikeId) {
k++;
p++;
stationlon= parseFloat(json[k].Stationlon);// String類型轉換成float類型
stationlonlist[row][p]=stationlon;// 將stationlon放到stationlonlist裡
stationlat= parseFloat(json[k].Stationlat);
stationlatlist[row][p] =stationlat;// 將stationlat放到stationlatlist裡
pointArray[row][p] = new BMap.Point(stationlon, stationlat);
}
addMarkertest(pointArray,row);//添加標記點
j = k + 1;
break;
}
var bikespeedtest = speedtest(pointArray,row);//每輛自行車路書的速度
polylinetest(pointArray,row,stationlonlist,stationlatlist);//每輛自行車借還站點間畫折線
lushutest(pointArray,bikespeedtest,row,stationlonlist,stationlatlist);//每輛自行車借還站點的路書路徑
}
map.setViewport(pointArray);
});
}
function speedtest(pointArray,row){//根據自行車的借還時間差來顯示不同的路書速度（待完善）
var distance = 0;//直行車走過的路徑長度
for(var i = 0; i < pointArray[row].length-1; i++){
distance += (map.getDistance(pointArray[row][i],pointArray[row][i+1]));//自行車借還站點的路徑長度
}
return distance/20;//速度=路徑長度/時間（此處時間固定，可改為根據數據庫讀取的時間）
}
//
function polylinetest(pointArray,row,stationlonlist,stationlatlist){
var points = new Array();
for(var i = 0; i < pointArray[row].length; i++){
points[i] = new BMap.Point(parseFloat(stationlonlist[row][i]), parseFloat(stationlatlist[row][i]));
}
//增加點與點之間的連線
var polyline = new BMap.Polyline(points, {
strokeColor : getColor(),
strokeWeight : 2,
strokeOpacity : 0.5
}); // 創建折線
map.addOverlay(polyline); // 繪制折線
}
//
function lushutest(pointArray,bikespeedtest,row,stationlonlist,stationlatlist){
var points = new Array();
for(var i = 0; i < pointArray[row].length; i++){
points[i] = new BMap.Point(parseFloat(stationlonlist[row][i]), parseFloat(stationlatlist[row][i]));
}
var lushu = new BMapLib.LuShu(map, points, {
defaultContent : "",
autoView : true, // 是否開啟自動視野調整，如果開啟那麼路書在運動過程中會根據視野自動調整
icon : new BMap.Icon('photo/bike.png', new BMap.Size(22, 22), {
anchor : new BMap.Size(10, 25)
}),
// enableRotation: true, //是否設置marker隨著道路的走向進行旋轉
speed : bikespeedtest,
});
lushu.start();
}
//生成折線的隨機顏色
function sj16(){
var sjshu=Math.round(Math.random()*10*2);
do
{
sjshu=Math.round(Math.random()*10*2);
}while (sjshu>=14);
return sjshu;
}
function getColor(){
var hex = ['1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'];
var yanse="";
for(i=0; i<6; i++){
yanse+=hex[sj16()];
}
return "#"+yanse
}
效果圖：
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持幫客之家。
