1 let i = 0;
2 PinBill.prototype.createBill = function () {
3 let that = this;
4 that.entity = viewer.entities.add({
5 id: '实体' + i++,
6 position: that.myPos,
7 billboard: {
8 image: that.myCanvas,
9 scale: 0.4,
10 verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
11 disableDepthTestDistance: new Cesium.CallbackProperty((time, result) => {
12 let cp = viewer.camera.positionWC.clone();
13 let d = Cesium.Cartesian3.distance(cp, that.myPos);
14 if (d < 60) {
15 that.entity.billboard.eyeOffset=new Cesium.Cartesian3(0, 0, -d+1);
16 return Number.POSITIVE_INFINITY;
17 } else {
18 return undefined;
19 }
20 }, false),
21 eyeOffset: new Cesium.Cartesian3(0, 0, -50)
22 }
23 });
24 }
