mirror of
https://github.com/jiawanlong/Cesium-Examples.git
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87 lines
3.8 KiB
HTML
87 lines
3.8 KiB
HTML
<!--********************************************************************
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* by jiawanlong
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*********************************************************************-->
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8" />
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<link rel="stylesheet" href="./../../libs/cesium/Cesium1.98/Widgets/widgets.css">
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<script type="text/javascript" src="./../../libs/cesium/Cesium1.98/Cesium.js"></script>
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<script src="./latlng.js"></script>
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</head>
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<body style="margin: 0; overflow: hidden; background: #fff; width: 100%; height: 100%; position: absolute; top: 0">
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<div id="map" style="margin: 0 auto; width: 100%; height: 100%"></div>
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<script type="text/javascript">
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Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiIyMjBhMzcxMC0wNjBiLTRmYjItYjY1MC0wMzAwMzMyMGUyMmEiLCJpZCI6MzAzNzc3LCJpYXQiOjE3NDc2Mzk0NTV9.E_90aKtVdzRGlU2z48VwJ4mWvl-uuDkfQBCOO6zbzn4'
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const viewer = new Cesium.Viewer('map', {});
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// 开启帧率
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viewer.scene.debugShowFramesPerSecond = true;
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// 0、常用的坐标系
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// 笛卡尔坐标：new Cesium.Cartesian3(x, y, z) 443621.9353276883
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// 弧度坐标：new Cesium.Cartographic(longitude, latitude, height) -1.657287975770561
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// 经纬度： Cesium.Cartesian3.fromDegrees(longitude, latitude, height) 120
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// 1、heading、pitch、roll
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// 偏航（heading），即机头朝左右摇摆
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// 俯仰(pitch)，机头上下摇摆
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// 滚转(roll)，机身绕中轴线旋转
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// 2、角度转弧度互相转换
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// 【1】角度转弧度：var radius = Cesium.Math.toRadians(90);
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// 【2】弧度转角度：var angle = Cesium.Math.toDegrees(1.5707963267948966);
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// 获取当前相机的参数（笛卡尔坐标系）
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console.log(
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"x:" + viewer.scene.camera.positionWC.x + "," +
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"y:" + viewer.scene.camera.positionWC.y + "," +
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"z:" + viewer.scene.camera.positionWC.z + "," +
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"heading:" + viewer.scene.camera.heading + "," +
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"pitch:" + viewer.scene.camera.pitch + "," +
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"roll:" + viewer.scene.camera.roll + ","
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)
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//3、 笛卡尔 - 》 弧度 -》 经纬度
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var ellipsoid = viewer.scene.globe.ellipsoid;
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var cartesian3 = new Cesium.Cartesian3(viewer.scene.camera.positionWC.x, viewer.scene.camera.positionWC.y, viewer.scene.camera.positionWC.z)
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var cartographic = ellipsoid.cartesianToCartographic(cartesian3);
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var lat = Cesium.Math.toDegrees(cartographic.latitude);
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var lng = Cesium.Math.toDegrees(cartographic.longitude);
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var height = cartographic.height;
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var heading = Cesium.Math.toDegrees(viewer.scene.camera.heading);
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var pitch = Cesium.Math.toDegrees(viewer.scene.camera.pitch);
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var roll = Cesium.Math.toDegrees(viewer.scene.camera.roll);
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console.log(lng, lat, height, heading, pitch, roll)
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//4、 经纬度 - 》 弧度 -》 笛卡尔
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var ellipsoid = viewer.scene.globe.ellipsoid;
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var cartographic = Cesium.Cartographic.fromDegrees(lng, lat, height);
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var cartesian3 = ellipsoid.cartographicToCartesian(cartographic);
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var heading = Cesium.Math.toRadians(heading);
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var pitch = Cesium.Math.toRadians(pitch);
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var roll = Cesium.Math.toRadians(roll);
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console.log(cartesian3.x, cartesian3.y, cartesian3.z, heading, pitch, roll)
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//5、 常用函数库
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//提取地球中心点坐标
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console.log(latlng.getCenter(viewer))
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// 提取地球视域边界
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console.log(latlng.getExtent(viewer))
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// 提取视域边界
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console.log(latlng.getViewBounds(viewer))
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// 提取相机视角范围参数
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console.log(latlng.getCameraView(viewer))
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</script>
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</body>
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</html> |