unity在scene下动画预览

using UnityEngine;

public class EditAnimator : MonoBehaviour {
    public float m_CurTime;
    public int selectedAnimationIndex;
}

using UnityEditor;
using UnityEditor.Animations;
using UnityEngine;

[CustomEditor(typeof(EditAnimator))]
public class EditAnimatorInspector : Editor {
    private float m_CurTime;
    private const float kDuration = 1f;

    private Animator m_Animator;

    // 定义动画名称的数组
    private string[] animationOptions = { };

    private EditAnimator editAnimator {
        get { return target as EditAnimator; }
    }

    private Animator animator => m_Animator ?? (m_Animator = editAnimator.GetComponent<Animator>());

    public override void OnInspectorGUI() {
        if (animationOptions.Length == 0) {
            GetAllAnimation();
        }

        editAnimator.selectedAnimationIndex = EditorGUILayout.Popup("选择动画", editAnimator.selectedAnimationIndex, animationOptions);
        editAnimator.m_CurTime = EditorGUILayout.Slider("时间:", editAnimator.m_CurTime, 0f, kDuration);
        string str = animationOptions[editAnimator.selectedAnimationIndex];
        if (!string.IsNullOrEmpty(str)) {
            animator.Play(str, 0, editAnimator.m_CurTime);
        }

        animator.Update(0);
        // 添加按钮
        if (GUILayout.Button("刷新动画")) {
            GetAllAnimation();
        }
    }

    private void GetAllAnimation() {
        // 获取 Animator 中的动画片段
        if (animator.runtimeAnimatorController is AnimatorController controller) {
            var clips = controller.animationClips;
            animationOptions = new string[clips.Length];
            for (int i = 0; i < clips.Length; i++) {
                animationOptions[i] = clips[i].name;
            }
        }
    }
}