<!-- 02-Tntity添加立方体 -->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>02-Tntity添加立方体</title>
<script src='./Cesium/Build/Cesium/Cesium.js'></script>
<link rel="stylesheet" href="./Cesium/Build/Cesium/Widgets/widgets.css">
</head>
<body>
<div id="cesiumContainer"></div>
<script>
var viewer=new Cesium.Viewer('cesiumContainer');
var redBox=viewer.entities.add({
name:'Red box with black outline',
position:Cesium.Cartesian3.fromDegrees(-107.0,40.0,30000.0),
box:{
dimensions:new Cesium.Cartesian3(400000.0,300000.0,500000.0),
material:Cesium.Color.RED.withAlpha(0.5), //withAlpha其实就是设置透明度
outline:true,
outlineColor:Cesium.Color.BLACK
}
})
viewer.zoomTo(viewer.entities);
</script>
</body>
</html>
第一次看cesium代码,不理解withAlpha的含义, 后来查看API文档说是 创建具有相同红色,绿色和蓝色成分的新颜色作为此颜色,但具有指定的alpha值
后来自己去设置不同值尝试了一下,发现 withAlpha 其实就是opacity 透明度, 算是刚刚学习的hello world 笔记。