GeoTrailingMaterialProperty

new Cesium.GeoTrailingMaterialProperty(options)

拖尾材质
Name Type Description
options Object optional 参数选项
Name Type Default Description
color Color "ragb(255,0,0,0.1)" optional 应用到拖尾轨迹的颜色
image String optional 拖尾图片的路径
speed Number 5 optional 决定拖尾运动速度的值，值越大，速度越快，反正则越慢，不能为0
trailLength Number 100 optional 决定拖尾的大小，值越大，拖尾越长，值越小，拖尾越小
Example:
var blueTrailing = viewer.entities.add({
		polyline: {
		    positions: Cesium.Cartesian3.fromDegreesArray([
		      -100,40,-70,35]),
		    width: 5,
			material : new Cesium.GeoTrailingMaterialProperty({
			    image:"light12.png",
			    speed:2,
			    color:"blue",
				trailLength:100,
		    }),
	    }
});