cesium(模型)

var position = Cesium.Cartesian3.fromDegrees(108, 34, 500);
   var heading = Cesium.Math.toRadians(90); 
   var pitch = Cesium.Math.toRadians(-30); 
   var roll = Cesium.Math.toRadians(0); 
   var hpRoll = new Cesium.HeadingPitchRoll(heading, pitch, roll);
   var fixedFrameTransform = Cesium.Transforms.localFrameToFixedFrameGenerator(‘north‘, ‘west‘);
   var model = viewer.scene.primitives.add(Cesium.Model.fromGltf({
       url:‘../SampleData/models/CesiumAir/Cesium_Air.gltf‘,
       scale:100,
       modelMatrix: Cesium.Transforms.headingPitchRollToFixedFrame(position, hpRoll, Cesium.Ellipsoid.WGS84, fixedFrameTransform),
       show:true,
       id:‘feiji‘,
       minimumPixelSize:0,
       maximumScale:100,
       color:Cesium.Color.fromCssColorString(‘rgba(255,250,250,1)‘)
   }))

viewer.scene.primitives.remove(model);

var entity = viewer.entities.add({
        position : Cesium.Cartesian3.fromDegrees(108, 34,0),
        model : {
            uri : ‘../SampleData/models/CesiumAir/Cesium_Air.gltf‘,
            show:true,
            scale:100,
            minimumPixelSize:1,
            maximumScale:100,
            silhouetteColor : Cesium.Color.fromAlpha(Cesium.Color.GREEN, parseFloat(0.5)),
            color : Cesium.Color.fromAlpha(Cesium.Color.RED, parseFloat(0.5))
        }
    })

 viewer.entities.remove(entity);