const line2= new Cesium.Primitive({
geometryInstances: new Cesium.GeometryInstance({
geometry: new Cesium.PolylineGeometry({
// positions: Cesium.Cartesian3.fromDegreesArrayHeights(positionArray),
positions: Cesium.Cartesian3.fromDegreesArrayHeights([positions[positions.length-2].lon,positions[positions.length-2].lat,positions[positions.length-2].height,
positions[positions.length-1].lon,positions[positions.length-1].lat,positions[positions.length-1].height]),
width: 5.0,
vertexFormat: Cesium.PolylineColorAppearance.VERTEX_FORMAT,
arcType: Cesium.ArcType.NONE,
}),
attributes: {
// color: Cesium.ColorGeometryInstanceAttribute.fromColor(
// Cesium.Color.BLUE
// ),
//rgb/255,转换
// color: Cesium.ColorGeometryInstanceAttribute.fromColor(
// new Cesium.Color(0, 1, 0.0, 0.2)
// ),
// color: Cesium.ColorGeometryInstanceAttribute.fromColor(
// Cesium.Color.fromCssColorString('#ffff00')
// ),
//rgba,a也是0到255
// color: Cesium.ColorGeometryInstanceAttribute.fromColor(
// Cesium.Color.fromBytes(255, 0, 0, 200)
// ),
color: Cesium.ColorGeometryInstanceAttribute.fromColor(
Cesium.Color.fromCssColorString( "rgba(255, 255, 255, 0.75)")
),
},
}),
appearance: new Cesium.PolylineColorAppearance(),
})
标签：颜色,color,positions,Cesium,length,cesium,new,赋值,255 From： https://www.cnblogs.com/zwjun/p/17148836.html