nshen

  computeVertexNormals() {
        const positionAttribute = this.attributes['position'];
        if (positionAttribute !== undefined) {
            this.addAttribute('normal', { size: 3, data: new Float32Array(positionAttribute.count * 3) });
            let normalAttribute = this.attributes['normal'];
     
            const pA = new Vec3(), pB = new Vec3(), pC = new Vec3();
            const nA = new Vec3(), nB = new Vec3(), nC = new Vec3();
            const cb = new Vec3(), ab = new Vec3();

nshen

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console