<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<script src="http://bigemap.com/offline_data/newjunbiao/vue.js"></script>
<link
href="http://ua.bigemap.com:30081/bmsdk/bigemap-gl.js/v1.1.0/Widgets/widgets.css"
rel="stylesheet"
/>
<script src="http://ua.bigemap.com:30081/bmsdk/bigemap-gl.js/v1.1.0/bigemap-gl.js"></script>
<!-- elementui -->
<script src="http://bigemap.com/offline_data/newjunbiao/elementui.js"></script>
<link rel="stylesheet" href="http://bigemap.com/offline_data/newjunbiao/elementui.css" />
<title>鼠标滚轮事件</title>
<style>
* {
margin: 0;
padding: 0;
}
html,
body {
width: 100%;
height: 100%;
}
#app {
width: 100%;
height: 100%;
}
#baseMap {
width: 100%;
height: 100%;
}
.tools {
position: absolute;
z-index: 9;
top: 40px;
right: 60px;
width: 200px;
height: 40px;
display: flex;
align-items: center;
}
</style>
</head>
<body>
<div id="app">
<div id="baseMap">
<div
id="mouse_state"
style="
position: absolute;
z-index: 9999;
top: 10px;
left: 10px;
background-color: white;
padding: 6px;
"
>{{showText}}</div>
</div>
</div>
<script>
let viewer = null;
window.onload = () => {
new Vue({
el: "#app",
data() {
return {
showText:"暂无相机镜头高度信息"
};
},
mounted() {
this.initMap();
},
methods: {
//初始化地图
initMap() {
bmgl.Config.HTTP_URL = "http://ua.bigemap.com:30081/bmsdk/";
viewer = new bmgl.Viewer("baseMap", {
mapId: "bigemap.dc-satellite",
infoBox: false,
selectionIndicator: false,
requestRenderMode: false,
});
this.initWheelEvent();
},
//初始化鼠标滚轮缩放事件
initWheelEvent() {
var _this = this;
let handler = new bmgl.ScreenSpaceEventHandler(
viewer.scene.canvas
);
handler.setInputAction(function (e) {
// console.log("鼠标滚轮事件",e);
let height = Math.ceil(
viewer.camera.positionCartographic.height
);
_this.showText = `相机镜头高度: ${height} 米`;
}, bmgl.ScreenSpaceEventType.WHEEL);
},
},
beforeDestroy() {
viewer.destroy();
viewer = null;
},
});
};
</script>
</body>
</html>