使用 Rails（指南）在垂直轴上启用对导航手势的支持。
这表示用户按住手指并在世界中移动手或者规范化立方体（坐标为从 -1.0 到 1.0）中的控制器。这些是标准化值，不代表任何物理单位（例如米）。该手势可用于构建基于速度的滚动或缩放，并且锁定到一个轴（如果用户主要在该方向上发起手势）。
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