[UnityAPI]Selection类

参考链接：

https://blog.csdn.net/qq_33337811/article/details/72858209

0.介绍

Selection这个类是针对Hierarchy视图和Project视图下的选中

1.常用变量 & 方法

a.非过滤模式

单选：Selection.activeTransform、Selection.activeGameObject、Selection.activeObject

多选：Selection.transforms、Selection.gameObjects、Selection.objects

b.过滤模式

Selection.GetFiltered

测试：

using UnityEditor;
using UnityEngine;

public class TestSelection 
{
    [MenuItem("Test/Selection.activeTransform | activeGameObject | activeObject")]
    private static void Test()
    {
        Debug.Log(Selection.activeTransform);//返回当前选中的Hierarchy视图下的物体
        Debug.Log(Selection.activeGameObject);//返回当前选中的Hierarchy视图下的物体 or Project视图下的预制体
        Debug.Log(Selection.activeObject);//返回当前选中的Hierarchy视图下的物体 or Project视图下的资源
    }

    [MenuItem("Test/Selection.transforms | gameObjects | objects")]
    private static void Test2()
    {
        //Selection.activeTransform的多选版本，注意返回的是top level的
        Debug.Log("Selection.transforms----------------------------");
        Transform[] tras = Selection.transforms;
        for (int i = 0; i < tras.Length; i++)
        {
            Debug.Log(tras[i]);
        }

        //Selection.activeGameObject的多选版本
        Debug.Log("Selection.gameObjects----------------------------");
        GameObject[] goes = Selection.gameObjects;
        for (int i = 0; i < goes.Length; i++)
        {
            Debug.Log(goes[i]);
        }

        //Selection.activeObject的多选版本
        Debug.Log("Selection.objects----------------------------");
        Object[] objs = Selection.objects;
        for (int i = 0; i < objs.Length; i++)
        {
            Debug.Log(objs[i]);
        }
    }

    [MenuItem("Test/Selection.GetFiltered")]
    private static void Test3()
    {
        //Unfiltered：Return the whole selection.
        //TopLevel：Only return the topmost selected transform. A selected child of another selected transform will be filtered out.
        //Deep：Return the selection and all child transforms of the selection.
        //ExcludePrefab：Excludes any Prefabs from the selection.
        //Editable：Excludes any objects which shall not be modified.

        //Assets：Only return objects that are assets in the Asset directory.
        //(Project视图，只返回Asset文件夹的资源。只返回选中的资源，选中文件夹时不会查找该文件夹下的资源)

        //DeepAssets：If the selection contains folders, also include all assets and subfolders within that folder in the file hierarchy.
        //(Project视图，如果选择里包含文件夹，则也包括文件夹里的文件和子文件夹。会递归文件夹)
        Texture[] textures = Selection.GetFiltered<Texture>(SelectionMode.Assets);
        for (int i = 0; i < textures.Length; i++)
        {
            Debug.Log(textures[i]);
        }
    }
}