material 材质

• 颜色 通过给 material 赋值 color 对象值既可以

  //内置颜色
  polygon.material: Cesium.Color.RED.withAlpha(0.5),
  //css颜色
  //cssColor:值可以是 #ffccdd, rgb(255，255，255)，rgb(255，0，255，0.5)
  polygon.material: Cesium.Color.fromCssColorString(cssColor, result)
  
  

• 通过 ColorMaterialProperty设置动态的颜色
  

  // 创建 colorProperty
  var colorProperty = new Cesium.SampledProperty(Cesium.Color);
  

  polygon.material: new Cesium.ColorMaterialProperty(colorProperty),

• 贴图：直接设置贴图图片路径即可

  polygon.material:'../img/cesium/c1_3.jpg'
  

填充和边框

fill:false,//默认true
outline:true,//默认false，如果需要设置边框颜色需要开启设置为true
outlineColor: Cesium.Color.fromCssColorString("rgba(0,0,255,.5)"),
outlineWidth:100

高度和实体垂直拉伸

  height: 200000.0,//离地高度
  extrudedHeight: 400000.0, //实体高度 = extrudedHeight - height

完整代码

var entity = viewer.entities.add({
	position: Cesium.Cartesian3.fromDegrees(...lnglat),
	polygon: {
		hierarchy: {
			positions: Cesium.Cartesian3.fromDegreesArray([
				103.842575,
				30.795808,
				104.394638,
				30.728545,
				104.394638,
				30.728545,
				103.626969,
				30.584419,
			]),
		},
		material: Cesium.Color.RED.withAlpha(0.5),
		// material: new Cesium.ColorMaterialProperty(colorProperty),
		// material:'..//images/cesium/cesium/c1_3.jpg',
		height: 2000.0, //离地高度
		extrudedHeight: 4000.0, //实体高度 = extrudedHeight - height
		// fill:false,
		// outline:true,
		// outlineColor: Cesium.Color.fromCssColorString("rgba(0,0,255,.5)"),
		// outlineWidth:100
	},
});

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初始化补充

设置初始化范围

//Rectangle(west, south, east, north)
//设置初始化中国范围
Cesium.Camera.DEFAULT_VIEW_RECTANGLE = Cesium.Rectangle.fromDegrees(...[100, 10, 120, 70]);