WXDemo/miniprogram/components/xr-particle-orb/index.js

Component({
    behaviors: [require('../common/share-behavior').default],
    properties: {
        capacity: {
            type: Number,
            value: 20
        },
        emitRate: {
            type: Number,
            value: 5
        },
        lifeTime: {
            type: Number,
            value: 3
        }
    },
    data: {
        loaded: false
    },
    lifetimes: {},
    methods: {
        handleReady({
            detail
        }) {
            const xrScene = this.scene = detail.value;
            console.log('xr-scene', xrScene);
            const xrFrameSystem = wx.getXrFrameSystem()

            //orb vfx
            const orb = xrScene.getElementById("orb");
            var tempSystem = orb.getComponent(xrFrameSystem.Particle);
            tempSystem.addAlphaGradient(0, 0, 0);
            tempSystem.addAlphaGradient(0.5, 1, 1);
            tempSystem.addAlphaGradient(1, 0, 0);
            tempSystem.addSizeGradient(0, 1, 1);
            tempSystem.addSizeGradient(1, 0, 0);

            //orbline vfx
            const orbLine = xrScene.getElementById("orbLine");
            tempSystem = orbLine.getComponent(xrFrameSystem.Particle);
            tempSystem.addColorGradient(0, xrFrameSystem.Vector4.createFromNumber(1, 1, 0, 1));
            tempSystem.addColorGradient(1, xrFrameSystem.Vector4.createFromNumber(1, 0.68, 0, 1));
            tempSystem.addAlphaGradient(0, 0, 0);
            tempSystem.addAlphaGradient(0.5, 1, 1);
            tempSystem.addAlphaGradient(1, 0, 0);
            tempSystem.addSizeGradient(0, 1, 1);
            tempSystem.addSizeGradient(1, 0, 0);
        },

        handleAssetsProgress: function ({
            detail
        }) {
            console.log('assets progress', detail.value);

        },
        handleAssetsLoaded: function ({
            detail
        }) {
            console.log('assets loaded', detail.value);
            this.setData({
                loaded: true
            });
        }
    }
})