在Spark AR中不使用平面跟踪器旋转3D对象

const Scene = require('Scene');
const Reactive = require('Reactive');

// 获取对象节点
const object = Scene.root.find('object0');

// 定义旋转角度
const rotationAngle = Reactive.val(0);

// 设置对象的旋转
object.transform.rotationX = rotationAngle;

// 每帧更新旋转角度
const timeDriver = Animation.timeDriver({ durationMilliseconds: 2000, loopCount: Infinity });
const timeSampler = Animation.samplers.linear(0, 360);
const rotationAnimation = Animation.animate(timeDriver, timeSampler);
timeDriver.start();
rotationAngle.monitor().subscribe(function (e) {
  object.transform.rotationX = e.newValue;
});

// 启动动画
timeDriver.start();