This class represents the default context for manipulation tools. When GameObjectToolContext is active, manipulation tools affect the transform property of GameObjects in the SceneView Selection.
| GetAdditionalToolTypes | Get an additional collection of tools to display in the same category as the built-in transform tools. |
| OnActivated | Invoked after this EditorToolContext becomes the active tool context. |
| OnToolGUI | Implements any common functionality for the set of manipulation tools available for this context. |
| OnWillBeDeactivated | Invoked before this EditorToolContext stops being the active tool context. |
| PopulateMenu | Adds menu items to the Scene view context menu. |
| ResolveTool | Returns the matching EditorTool type for the specified Tool given the context. |
| GetInstanceID | Gets the instance ID of the object. |
| ToString | 返回对象的名称。 |
| GetEditorToolType | Defines the EditorTool type for a given Tool. |
| Destroy | 移除 GameObject、组件或资源。 |
| DestroyImmediate | 立即销毁对象 /obj/。强烈建议您改用 Destroy。 |
| DontDestroyOnLoad | 在加载新的 Scene 时，请勿销毁 Object。 |
| FindAnyObjectByType | Retrieves any active loaded object of Type type. |
| FindFirstObjectByType | Retrieves the first active loaded object of Type type. |
| FindObjectsByType | Retrieves a list of all loaded objects of Type type. |
| Instantiate | 克隆 original 对象并返回克隆对象。 |
| CreateInstance | 创建脚本化对象的实例。 |
| bool | 该对象是否存在？ |
| operator != | 比较两个对象是否引用不同的对象。 |
| operator == | 比较两个对象引用，判断它们是否引用同一个对象。 |