Scene 视图导航
The Scene view has a set of navigation controls to help you move around efficiently:
场景视图辅助图标
The Scene Gizmo appears in the Scene view. This displays the Scene view Camera’s current orientation, and allows you to modify the viewing angle and projection mode.
The Scene Gizmo has a conical arm on each side of the cube. The arms at the forefront are labelled X, Y, and Z. Click on any of the conical axis arms to snap the Scene view Camera to the axis it represents (for example: top view, left view and front view). You can also right-click the cube to bring up a menu with a list of viewing angles. To return to the default viewing angle, right-click the Scene Gizmo and click Free.
You can also toggle Perspective on and off. This changes the projection mode of the Scene view between Perspective and Orthographic (sometimes called “isometric”). To do this, click the cube in the center of the Scene Gizmo, or the text below it. The Orthographic view has no perspective, and is useful in combination with clicking one of the conical axis arms to get a front, top or side elevation.
If your Scene view is in an awkward viewpoint (upside-down, or just an angle you find confusing), Shift-click the cube at the center of the Scene Gizmo to get back to a Perspective view with an angle that’s looking at the Scene from the side and slightly from above.
Click on the padlock on the top right of the Scene Gizmo to enable or disable rotation of the Scene. Once Scene rotation is disabled, right-clicking the mouse pans the view instead of rotating it. This is the same as the View tool.
Note that in 2D Mode the Scene Gizmo doesn’t appear, because the only option is to have the view looking perpendicularly at the XY plane.
Mac 触控板手势
在带触控板的 Mac 上，可用两根手指拖动来缩放视图。
还可以使用三根手指来模拟单击__场景视图辅助图标__锥形臂的效果：向上、向左、向右或向下拖动可将 Scene 视图摄像机对齐到相应的方向。
Move, orbit and zoom in the Scene view
Moving, orbiting, and zooming are key operations in Scene view navigation. Unity provides several ways to perform them for maximum accessibility:
箭头移动
You can use the Arrow Keys to move around the Scene as though “walking” through it. The up and down arrows move the Camera forward and backward in the direction it’s facing. The left and right arrows pan the view sideways. Hold down the Shift key with an arrow to move faster.
The View tool
When the View tool is selected (shortcut: Q), the following mouse controls are available:
| 控制： | 描述： |
|---|---|
| 移动 |
 Click and drag to move the Camera around. |
| 旋转 |
 Hold Alt (Windows) or Option (macOS), and left-click and drag to orbit the Camera around the current pivot point. This option isn’t available in 2D mode, because the view is orthographic. |
| 缩放 |
 按住 Alt (Windows) 或 Option (macOS)，然后单击鼠标右键并拖动可缩放 Scene 视图。 在 macOS 上也可以按住 Control，然后左键单击并拖动。 |
按住 Shift 可提高移动和缩放的速度。
飞越模式
使用__飞越模式 (Flythrough mode)__ 可以通过第一人称飞行来导航 Scene 视图，类似于在许多游戏中导航的方式：
- 单击并按住鼠标右键。
- 使用鼠标移动视图，使用 WASD 键向左/向右/向前/向后移动，使用 Q 和 E 键向上和向下移动。
- 按住 Shift 键可以加快移动速度。
飞越模式是专为__透视模式__设计的。在__正交模式__中，按住鼠标右键并移动鼠标会使摄像机旋转。
Note that Flythrough mode isn’t available in 2D mode. Instead, holding the right mouse button down while moving the mouse pans around the Scene view.
摄像机速度
要在 Scene 视图中更改摄像机的当前速度，请单击工具栏中的摄像机图标。在__飞越模式__中，可以在场景中移动时更改摄像机速度。为此，请使用鼠标滚轮或在触控板上拖动两根手指。
有关更多信息，请参阅摄像机设置文档。
移动快捷键
For extra efficiency, these controls can also be used regardless of which transform tool is selected. The most convenient controls depend on which mouse or track-pad you are using:
| 操作 | 3 键鼠标 | 2 键鼠标或触控板 | 只有一个鼠标键或触控板的 Mac |
|---|---|---|---|
| 移动 | 按住 Alt+鼠标中键，然后拖动 | 按住 Alt+Control+左键单击，然后拖动 | 按住 Alt+Command+左键单击，然后拖动 |
| 旋转__（在 2D 模式中不可用） |按住 Alt+左键单击，然后拖动 |按住 Alt+左键单击，然后拖动 |按住 Alt+左键单击，然后拖动 | |缩放__ | 使用鼠标滚轮，或按住 Alt+右键单击，然后拖动 | 按住 Alt+右键单击，然后拖动 | 使用双指轻扫方法可放大或缩小，或按住 Alt+Control+左键单击，然后拖动 |
| __更改速度__（仅在飞越模式中可用） | 在移动时使用滚轮。 | 在移动时用两根手指拖动。 | 在移动时用两根手指拖动。 |
Center the view on a GameObject
要将 Scene 视图居中于游戏对象上，请在层级视图中选择该游戏对象，然后将鼠标移到 Scene 视图上并按 F。如果已经选择了游戏对象，按 F 会放大到轴心点。此功能也可在菜单栏中的 Edit > Frame Selected 下找到。
要将视图锁定到游戏对象（即使游戏对象正在移动），请按 Shift+F。此功能也可在菜单栏中的 Edit > Lock View to Selected 下找到。