SuperMap iClient3D for WebGL entity贴视频材质

作者：gsh

前言

1. HTML中添加视频

2. 创建entity并赋予视频材质

3. 效果

4. 完整代码

前言

有些客户在做视频投放时，视频投放的位置不理想，或者是贴模型贴地形效果不理想，想使用entity的方式实现贴视频材质，今天小编带大家使用简单的entity来做视频投放。

1. HTML中添加视频

<div id="videoPlayer" style="display:none;">
 	<video id="Player" style="position:absolute;display: none" src="./media/漓江.mp4" autoplay="false">
    </video>
</div>

将 autoplay 属性设置为 false，禁用视频的自动播放。控制视频的播放行为，可以使用 HTMLMediaElement中的 play() 和 pause() 方法。例如：

videoElement.play(); //播放视频
videoElement.pause(); //停止播放视频

2. 创建entity并赋予视频材质

本文以矩形为例，设置贴地形。也可根据需求设置多边形等，设置贴模型等。

var video = viewer.entities.add({
rectangle: {
    coordinates:SuperMap3D.Rectangle.fromDegrees(110.52536753202706, 24.915908943255427, 110.52806246797293, 24.917445056744572),
    lassificationType: SuperMap3D.ClassificationType.TERRAIN//设置贴地形
},
});
var videoElement = document.getElementById('Player'); //创建 <video> 元素
video.rectangle.material = videoElement;//将视频设置为矩形的材质

3. 效果

4. 完整代码

<!DOCTYPE html>
<html lang="en">
 
	<head>
		<meta charset="utf-8">
		<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
		<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
		<title>entity视频投放</title>
		<link href="../../Build/SuperMap3D/Widgets/widgets.css" rel="stylesheet">
		<link href="./css/pretty.css" rel="stylesheet">
		<script src="./js/jquery.min.js"></script>
		<script src="./js/slider.js"></script>
		<script type="text/javascript" src="../../Build/SuperMap3D/SuperMap3D.js"></script>
		<script src="./js/config.js"></script>
	</head>
 
	<body>
		<div id="Container"></div>
		<div id="toolbar" class="param-container tool-bar">
			<button type="button" id="active" class="button black">播放</button>
			<button type="button" id="stop" class="button black">停止</button>
			<button type="button" id="clear" class="button black">清除</button>
			<div id="videoPlayer" style="display:none;">
				<video id="Player" style="position:absolute;display: none" src="./media/漓江.mp4" autoplay="false"></video>
			</div>
		</div>
 
		<script type="text/javascript">
			function onload(SuperMap3D) {
				var viewer = new SuperMap3D.Viewer('Container', {
					//创建地形服务提供者的实例，url为SuperMap iServer发布的TIN地形服务
					terrainProvider: new SuperMap3D.SuperMapTerrainProvider({
						url: 'http://localhost:8090/iserver/services/3D-QuanQiuDiXing/rest/realspace/datas/worldDEM%40globaldemNew',
						isSct: true, //地形服务源自SuperMap iServer发布时需设置isSct为true
						invisibility: true
					}),
				});
				let wmts = new SuperMap3D.WebMapTileServiceImageryProvider({
					url: 'https://guangxi.tianditu.gov.cn/ime-server/rest/tdtgx_img2022/wmts?tk=a55278eb7ef41fc91421fe7b2be86aa0',
					format: "image/jpgpng",
					layer: '某某省2022年影像',
					style: 'default',
					tileMatrixSetID: 'guobiao028mm',
					tileMatrixLabels: ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",
						"13", "14", "15", "16", "17", "18", "19", "20"
					],
					tilingScheme: new SuperMap3D.GeographicTilingScheme()
				})
				let imagelayer = viewer.imageryLayers.addImageryProvider(wmts);
				viewer.scene.camera.moveEnd.addEventListener(function() {
					console.log(viewer.camera._positionWC, "position")
					console.log(viewer.camera.pitch, "pitch", viewer.camera.roll, 'roll', viewer.camera.heading, 'head');
				});
				var scene = viewer.scene;
				var videoElement = document.getElementById('Player'); //创建 <video> 元素
				var video;
				//点击播放按钮
				$('#active').click(function(evt) {
					video = viewer.entities.add({
						rectangle: {
							coordinates: SuperMap3D.Rectangle.fromDegrees(110.52536753202706, 24.915908943255427, 110.52806246797293,
								24.917445056744572),
							classificationType: SuperMap3D.ClassificationType.BOTH
						},
					});
					scene.camera.setView({
						destination: new SuperMap3D.Cartesian3(-2029687.4622839561, 5420952.979072448, 2670970.9068745463),
						orientation: {
							heading: 6.283184826096006,
							pitch: -1.5589460064169636,
							roll: 0
						}
					})
					// viewer.zoomTo(video);
					videoElement.currentTime = 0;
					video.rectangle.material = videoElement;
					videoElement.play(); //播放视频
				});
				//点击停止播放按钮
				$('#stop').click(function(evt) {
					videoElement.pause(); //停止播放视频
				})
				//点击清除视频按钮
				$('#clear').click(function(evt) {
					viewer.entities.remove(video);
					videoElement.pause();
				});
			}
			if (typeof SuperMap3D !== 'undefined') {
				window.startupCalled = true;
				onload(SuperMap3D);
			}
		</script>
	</body>
</html>

SuperMap iClient3D for WebGL entity贴视频材质

前言

1. HTML中添加视频

2. 创建entity并赋予视频材质

3. 效果

4. 完整代码

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