text: import {Vec3} from "./Vec3";
  export function Vec3Cross(a, b, out = new Vec3()) {
    const {x: ax, y: ay, z: az} = a;
    const {x: bx, y: by, z: bz} = b;
    return out.set(ay * bz - az * by, az * bx - ax * bz, ax * by - ay * bx);
  }
  