update(x = 0.5, y = 0.5) {
    if (!this.vrDisplay || !this.vrDisplay.hitTest) {
      return;
    }

    const hit = this.vrDisplay.hitTest(x, y);
    if (hit && hit.length > 0) {
      this.visible = true;
      placeObjectAtHit(this, hit[0], this.applyOrientation, this.easing);
    }
  }
Attempt to fire a raycast from normalized screen coordinates
x and y and lerp the reticle to the position.

@param {number} x
@param {number} y