CesiumJS 案例 P19：添加矩形、监听鼠标左击、监听鼠标右击、监听鼠标移动
CesiumJS
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CesiumJS API：https://cesium.com/learn/cesiumjs/ref-doc/index.html
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CesiumJS 是一个开源的 JavaScript 库，它用于在网页中创建和控制 3D 地球仪（地图）
一、添加矩形
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>RectangleGraphics - 添加矩形</title>
<link rel="stylesheet" href="../js/Cesium-1.112/Build/Cesium/Widgets/widgets.css" />
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html,
body {
width: 100%;
height: 100%;
}
.container {
width: 100%;
height: 100%;
}
</style>
</head>
<body>
<div id="container"></div>
</body>
<script src="../js/Cesium-1.112/Build/Cesium/Cesium.js"></script>
<script>
const viewer = new Cesium.Viewer("container");
const west = 0; // 西经（西经为负）
const south = 0; // 南纬（南纬为负）
const east = 10; // 东经（东经为正）
const north = 10; // 北纬（北纬为正）
// 添加矩形
const rectangle = viewer.entities.add({
rectangle: {
coordinates: Cesium.Rectangle.fromDegrees(west, south, east, north),
material: Cesium.Color.BLUE.withAlpha(0.5), // 半透明的蓝色
},
});
</script>
</html>
二、监听鼠标左击
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>ScreenSpaceEventHandler - 监听鼠标左击</title>
<link rel="stylesheet" href="../js/Cesium-1.112/Build/Cesium/Widgets/widgets.css" />
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html,
body {
width: 100%;
height: 100%;
}
.container {
width: 100%;
height: 100%;
}
</style>
</head>
<body>
<div id="container"></div>
</body>
<script src="../js/Cesium-1.112/Build/Cesium/Cesium.js"></script>
<script>
const viewer = new Cesium.Viewer("container");
const handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
handler.setInputAction((click) => {
console.log("点击位置为：", click.position.x, click.position.y);
}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
</script>
</html>
三、监听鼠标右击
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>ScreenSpaceEventHandler - 监听鼠标右击</title>
<link rel="stylesheet" href="../js/Cesium-1.112/Build/Cesium/Widgets/widgets.css" />
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html,
body {
width: 100%;
height: 100%;
}
.container {
width: 100%;
height: 100%;
}
</style>
</head>
<body>
<div id="container"></div>
</body>
<script src="../js/Cesium-1.112/Build/Cesium/Cesium.js"></script>
<script>
const viewer = new Cesium.Viewer("container");
const handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
handler.setInputAction((click) => {
console.log("点击位置为：", click.position.x, click.position.y);
}, Cesium.ScreenSpaceEventType.RIGHT_CLICK);
</script>
</html>
四、监听鼠标移动
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>ScreenSpaceEventHandler - 监听鼠标移动</title>
<link rel="stylesheet" href="../js/Cesium-1.112/Build/Cesium/Widgets/widgets.css" />
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html,
body {
width: 100%;
height: 100%;
}
.container {
width: 100%;
height: 100%;
}
</style>
</head>
<body>
<div id="container"></div>
</body>
<script src="../js/Cesium-1.112/Build/Cesium/Cesium.js"></script>
<script>
const viewer = new Cesium.Viewer("container");
const handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
// 原点为左上角
// 原点往右为 X 轴正方向
// 原点往下为 Y 轴正方向
handler.setInputAction((movement) => {
console.log("移动位置为：", movement.endPosition.x, movement.endPosition.y);
}, Cesium.ScreenSpaceEventType.MOUSE_MOVE);
</script>
</html>
原文地址：https://blog.csdn.net/weixin_52173250/article/details/143450210
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