<%@ page contentType="text/html;charset=UTF-8" language="java" %>
|
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
|
<!DOCTYPE html>
|
<head>
|
<meta charset="utf-8"/>
|
<title></title>
|
<script type="text/javascript"
|
src="http://api.map.baidu.com/api?v=2.0&ak=rER1sgBIcQxkfNSlm2wmBGZGgEERrooM"></script>
|
<script type="text/javascript" src="/js/jquery.min.js"></script>
|
</head>
|
<style type="text/css">
|
body,
|
html,
|
#mapCanvas {
|
width: 100%;
|
height: 100%;
|
overflow: hidden;
|
margin: 0;
|
z-index: 0;
|
font-size: 14px;
|
font-family: "微软雅黑";
|
}
|
|
.main_body {
|
border: 0;
|
margin: 0;
|
width: 100%;
|
height: 100%;
|
position: relative;
|
}
|
|
* {
|
margin: 0;
|
padding: 0;
|
list-style: none;
|
}
|
</style>
|
|
<body>
|
<div class="main_body">
|
<div id="mapCanvas"></div> <!-- 百度地图 -->
|
<!-- 传sensorInfo,regionCode,regionName,monitorPoint,device-->
|
<div id="pollutionSourceParams" style="display: none;">
|
${requestScope.pollutionSourceParams}
|
</div>
|
</div>
|
</body>
|
</html>
|
|
<script type="text/javascript">
|
var moralMap = {};
|
var mapStyle = {
|
features: ["road", "building", "water", "land"], // 隐藏地图上的poi
|
style: "normal" // 设置地图风格为高端黑
|
};
|
var params = $.parseJSON($("#pollutionSourceParams").html());
|
var weatherInfoToday = params["weatherInfoToday"];
|
var weatherInfoForecast = params["weatherInfoForecast"];
|
var isToday = params["isToday"];
|
console.log(weatherInfoToday);
|
console.log(weatherInfoForecast);
|
console.log(isToday);
|
var device = params["device"];
|
var cityName = params["weatherInfoToday"]["cityName"];
|
var map = new BMap.Map("mapCanvas", {enableMapClick: false});
|
map.setCurrentCity("昆山");
|
map.setMapStyle(mapStyle);
|
map.enableScrollWheelZoom(true); // 开启鼠标滚轮缩放
|
var navigation = new BMap.NavigationControl({
|
anchor: BMAP_ANCHOR_BOTTOM_RIGHT,
|
type: BMAP_NAVIGATION_CONTROL_LARGE
|
});
|
map.addControl(navigation);
|
map.addControl(new BMap.ScaleControl());
|
var longitude = params["device"]["longitude"];
|
var latitude = params["device"]["latitude"];
|
var point = new BMap.Point(longitude, latitude);
|
var icon = new BMap.Icon("/img/ico00.png", new BMap.Size(50, 50));
|
var marker = new BMap.Marker(point, {icon: icon, offset: new BMap.Size(0, -20)});
|
map.addOverlay(marker);
|
map.setCurrentCity(cityName);
|
map.centerAndZoom(point, 19);
|
var bounds = map.getBounds(); //获取地图可视区域
|
var sw = bounds.getSouthWest(); //获取西南角的经纬度(左下端点)
|
var ne = bounds.getNorthEast(); //获取东北角的经纬度(右上端点)
|
var wn = new BMap.Point(sw.lng, ne.lat); //获取西北角的经纬度(左上端点)
|
var es = new BMap.Point(ne.lng, sw.lat); //获取东南角的经纬度(右下端点)
|
var n = new BMap.Point(longitude, ne.lat);
|
var s = new BMap.Point(longitude, sw.lat);
|
var w = new BMap.Point(sw.lng, latitude);
|
var e = new BMap.Point(ne.lng, latitude);
|
var dirPoint;
|
if (Object.keys(weatherInfoForecast).length === 0) {
|
var windDir = weatherInfoToday["windDir"];
|
dirPoint = getWindDir(windDir, dirPoint);
|
} else {
|
if (isToday) {
|
var windDir = weatherInfoToday["windDir"];
|
dirPoint = getWindDir(windDir, dirPoint);
|
} else {
|
var windDir = weatherInfoForecast["windDirDay"];
|
dirPoint = getWindDir(windDir, dirPoint);
|
}
|
}
|
var polyline = new BMap.Polyline([
|
dirPoint,
|
point
|
],
|
{strokeColor: "#5298FF", strokeWeight: 4, strokeOpacity: 1}
|
);
|
map.addOverlay(polyline);// 画两点间线
|
addArrow(polyline, 50, Math.PI / 7);
|
|
var winfowText =
|
'<div style="min-height:20px;overflow:auto;max-height:330px;" >';
|
var opts = {
|
width: 220,
|
height: 220,
|
enableMessage: false //设置允许信息窗发送短息
|
}
|
winfowText += ("<p style='height: 22px;line-height: 22px'></p>");
|
|
winfowText += "</div>";
|
marker.addEventListener("click", function () {
|
var infoWindow = new BMap.InfoWindow(winfowText, opts);
|
this.openInfoWindow(infoWindow);
|
});
|
|
|
function addArrow(polyline, length, angleValue) {
|
var linePoint = polyline.getPath();// 线的坐标串
|
var arrowCount = linePoint.length;
|
for (var i = 1; i < arrowCount; i++) { // 在拐点处绘制箭头
|
var pixelStart = map.pointToPixel(linePoint[i - 1]);
|
var pixelEnd = map.pointToPixel(linePoint[i]);
|
var angle = angleValue;// 箭头和主线的夹角
|
var r = length; // r/Math.sin(angle)代表箭头长度
|
var delta = 0; // 主线斜率，垂直时无斜率
|
var param = 0; // 代码简洁考虑
|
var pixelTemX, pixelTemY, poMiddleX, poMiddleY;// 临时点坐标
|
var pixelX, pixelY, pixelX1, pixelY1;// 箭头两个点
|
poMiddleX = (pixelEnd.x + pixelStart.x) / 2;
|
poMiddleY = (pixelEnd.y + pixelStart.y) / 2;
|
if (poMiddleX - pixelStart.x == 0) { // 斜率不存在时
|
pixelTemX = poMiddleX;
|
if (poMiddleY > pixelStart.y) {
|
pixelTemY = poMiddleY - r;
|
} else {
|
pixelTemY = poMiddleY + r;
|
}
|
// 已知直角三角形两个点坐标及其中一个角，求另外一个点坐标算法
|
pixelX = pixelTemX - r * Math.tan(angle);
|
pixelX1 = pixelTemX + r * Math.tan(angle);
|
pixelY = pixelY1 = pixelTemY;
|
} else { // 斜率存在时
|
delta = (poMiddleY - pixelStart.y) / (poMiddleX - pixelStart.x);
|
param = Math.sqrt(delta * delta + 1);
|
if ((poMiddleX - pixelStart.x) < 0) { // 第二、三象限
|
pixelTemX = poMiddleX + r / param;
|
pixelTemY = poMiddleY + delta * r / param;
|
} else { // 第一、四象限
|
pixelTemX = poMiddleX - r / param;
|
pixelTemY = poMiddleY - delta * r / param;
|
}
|
// 已知直角三角形两个点坐标及其中一个角，求另外一个点坐标算法
|
pixelX = pixelTemX + Math.tan(angle) * r * delta / param;
|
pixelY = pixelTemY - Math.tan(angle) * r / param;
|
pixelX1 = pixelTemX - Math.tan(angle) * r * delta / param;
|
pixelY1 = pixelTemY + Math.tan(angle) * r / param;
|
}
|
var pointArrow = map.pixelToPoint(new BMap.Pixel(pixelX, pixelY));
|
var pointArrow1 = map.pixelToPoint(new BMap.Pixel(pixelX1, pixelY1));
|
var pointMiddle = map.pixelToPoint(new BMap.Pixel(poMiddleX, poMiddleY));
|
var Arrow = new BMap.Polyline([pointArrow, pointMiddle, pointArrow1],
|
{strokeColor: "#5298FF", strokeWeight: 4, strokeOpacity: 1});
|
map.addOverlay(Arrow);
|
}
|
};
|
|
function getWindDir(windDir, dirPoint) {
|
if (windDir == "北风") {
|
dirPoint = n;
|
} else if (windDir == "南风") {
|
dirPoint = s;
|
} else if (windDir == "西风") {
|
dirPoint = w;
|
} else if (windDir == "东风") {
|
dirPoint = e;
|
} else if (windDir == "西北风") {
|
dirPoint = wn;
|
} else if (windDir == "东北风") {
|
dirPoint = ne;
|
} else if (windDir == "西南风") {
|
dirPoint = sw;
|
} else if (windDir == "东南风") {
|
dirPoint = es;
|
} else {
|
dirPoint = n;
|
}
|
return dirPoint;
|
};
|
</script>
|
