Question

超图FAQ: 如何实现喷泉粒子效果

Answer 1

超图FAQ: updateCallback: applyGravity,并且增加回调参数var gravityScratch = new Cesium.Cartesian3()
let _this = this
function applyGravity (p, dt) {
var position = p.position
Cesium.Cartesian3.normalize(position, gravityScratch)
Cesium.Cartesian3.multiplyByScalar(gravityScratch, _this.viewModel.gravity * dt, gravityScratch)
p.velocity = Cesium.Cartesian3.add(p.velocity, gravityScratch, p.velocity)
}