Q1 用鼠標工具繪製覆蓋物，如何獲取覆蓋物的路徑？（官方記錄問題）
參考鏈接：https://lbs.amap.com/faq/js-api/map-js-api/cover/43364
代碼示例
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
<style>
html,
body,
#container {
width: 100%;
height: 100%;
}
</style>
<title>橢圓的繪製和編輯</title>
<link rel="stylesheet" href="https://a.amap.com/jsapi_demos/static/demo-center/css/demo-center.css"/>
<script src="https://webapi.amap.com/maps?v=1.4.15&key=您申請的key值&plugin=AMap.MouseTool"></script>
<script src="https://a.amap.com/jsapi_demos/static/demo-center/js/demoutils.js"></script>
</head>
<body>
<div id="container"></div>
<div class="input-card" style="width: 200px">
<h4 style="margin-bottom: 10px; font-weight: 600">利用mouseTool繪製覆蓋物</h4>
<button class="btn" onclick="drawPolyline()" style="margin-bottom: 5px">繪製線段</button>
<button class="btn" onclick="drawPolygon()" style="margin-bottom: 5px">繪製多邊形</button>
<button class="btn" onclick="drawRectangle()" style="margin-bottom: 5px">繪製矩形</button>
<button class="btn" onclick="drawCircle()" style="margin-bottom: 5px">繪製圓形</button>
</div>
<script type="text/javascript">
var map = new AMap.Map("container", {
center: [107.943579, 30.131735],
zoom: 14
});
var mouseTool = new AMap.MouseTool(map)
function drawPolyline() {
mouseTool.polyline({
strokeColor: "#3366FF",
strokeOpacity: 1,
strokeWeight: 6,
// 線樣式還支持 'dashed'
strokeStyle: "solid",
// strokeStyle是dashed時有效
// strokeDasharray: [10, 5],
})
}
function drawPolygon() {
mouseTool.polygon({
strokeColor: "#FF33FF",
strokeOpacity: 1,
strokeWeight: 6,
strokeOpacity: 0.2,
fillColor: '#1791fc',
fillOpacity: 0.4,
// 線樣式還支持 'dashed'
strokeStyle: "solid",
// strokeStyle是dashed時有效
// strokeDasharray: [30,10],
})
}
function drawRectangle() {
mouseTool.rectangle({
strokeColor: 'red',
strokeOpacity: 0.5,
strokeWeight: 6,
fillColor: 'blue',
fillOpacity: 0.5,
// strokeStyle還支持 solid
strokeStyle: 'solid',
// strokeDasharray: [30,10],
})
}
function drawCircle() {
mouseTool.circle({
strokeColor: "#FF33FF",
strokeOpacity: 1,
strokeWeight: 6,
strokeOpacity: 0.2,
fillColor: '#1791fc',
fillOpacity: 0.4,
strokeStyle: 'solid',
// 線樣式還支持 'dashed'
// strokeDasharray: [30,10],
})
}
mouseTool.on('draw', function (event) {
// event.obj 爲繪製出來的覆蓋物對象
log.info('覆蓋物對象繪製完成')
alert('是否提交')
})
AMap.event.addListener( mouseTool,'draw',function(e){
console.log(e.obj.getPath());//獲取路徑/範圍
console.log(e.obj.getArea());
});
</script>
</body>
</html>
Q2 編輯多邊形後如何獲取多邊形的路徑？（官方記錄問題）
參考鏈接：https://lbs.amap.com/faq/js-api/map-js-api/cover/43418
代碼示例：
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
<title>編輯多邊形</title>
<link rel="stylesheet" href="http://cache.amap.com/lbs/static/main1119.css"/>
<script src="http://webapi.amap.com/maps?v=1.3&key=您申請的key值&plugin=AMap.PolyEditor,AMap.CircleEditor"></script>
<script type="text/javascript" src="http://cache.amap.com/lbs/static/addToolbar.js"></script>
</head>
<body>
<div id="container"></div>
<div class="button-group">
<input type="button" class="button" value="開始編輯多邊形" onClick="editor.startEditPolygon()"/>
<input type="button" class="button" value="結束編輯多邊形" onClick="editor.closeEditPolygon()"/>
</div>
<script>
var editorTool, map = new AMap.Map("container", {
resizeEnable: true,
center: [116.403322, 39.900255],//地圖中心點
zoom: 13 //地圖顯示的縮放級別
});
//在地圖上繪製折線
var editor={};
editor._polygon=(function(){
var arr = [ //構建多邊形經緯度座標數組
[116.403322,39.920255],
[116.410703,39.897555],
[116.402292,39.892353],
[116.389846,39.891365]
]
return new AMap.Polygon({
map: map,
path: arr,
strokeColor: "#0000ff",
strokeOpacity: 1,
strokeWeight: 3,
fillColor: "#f5deb3",
fillOpacity: 0.35
});
})();
map.setFitView();
editor._polygonEditor= new AMap.PolyEditor(map, editor._polygon);
editor.startEditPolygon=function(){
editor._polygonEditor.open();
}
editor.closeEditPolygon=function(){
editor._polygonEditor.close();
var a = editor._polygon.getPath();
console.log(a);
}
</script>
</body>
</html>
Q3 清除當前所繪製的圖形？
參考鏈接：https://lbs.amap.com/api/javascript-api/example/mouse-operate-map/mouse-draw-overlayers