Unity Custom Editor Window with Animation Clip Preview

Unity Engine
1

When I display a animation clip in a custom editor window, similar to the following:

clipEditor = UnityEditor.Editor.CreateEditor(animationClip);
clipEditor.OnPreviewSettings();
clipEditor.OnInteractivePreviewGUI(GUILayoutUtility.GetRect(256, 256), EditorStyles.whiteLabel);

The preview clip has a timeline bar - but the timeline only allows scrolling through the first 30 frames (one second) of the clip. Any ideas how I can scroll through the entire clip in the preview?

Thanks!

2

I also had this problem and found the only hacky way to fix it.

Just call the FixPreviewEditorForAnimation(clipEditor) and it should do the work

    private static FieldInfo _cachedAvatarPreviewFieldInfo;
    private static FieldInfo _cachedTimeControlFieldInfo;
    private static FieldInfo _cachedStopTimeFieldInfo;

    private static void FixPreviewEditorForAnimation(Editor editor)
    {
        if (!(editor.target is AnimationClip clip)) return;
        if (_cachedAvatarPreviewFieldInfo != null && _cachedTimeControlFieldInfo != null && _cachedStopTimeFieldInfo != null)
        {
            var value = _cachedAvatarPreviewFieldInfo.GetValue(editor);
            var subValue = _cachedTimeControlFieldInfo.GetValue(value);
            _cachedStopTimeFieldInfo.SetValue(subValue, clip.length);
        }
        else
        {
            _cachedAvatarPreviewFieldInfo ??= editor.GetType().GetField( "m_AvatarPreview", BindingFlags.NonPublic | BindingFlags.Instance);
            if (_cachedAvatarPreviewFieldInfo == null) return;
            var value = _cachedAvatarPreviewFieldInfo.GetValue(editor);
            if (value == null) return;
            _cachedTimeControlFieldInfo ??= value.GetType().GetField("timeControl", BindingFlags.Public | BindingFlags.Instance);
            if (_cachedTimeControlFieldInfo == null) return;
            var subValue = _cachedTimeControlFieldInfo.GetValue(value);
            if (subValue == null) return;
            _cachedStopTimeFieldInfo ??= subValue.GetType().GetField("stopTime", BindingFlags.Public | BindingFlags.Instance);
            if (_cachedStopTimeFieldInfo == null) return;
            _cachedStopTimeFieldInfo.SetValue(subValue, clip.length);
        }
    }
7 Likes
3

Really glad I’ve found this tread, spent the whole evening struggling with Odin Inspector & Animation Clip preview. Can someone submit a bug report? This doesn’t seem like intended behaviour for preview windows.

4

Also coming here to say thank you so much for this, Sologamer. Was having the exact same problem and you provided the turn-key solution! :v:

5

CombatMove.cs (3.5 KB)
CombatMoveEditor.cs (13.7 KB)

Hello, thanks to your effort I was able to finalize this curated CombatMove tooling for fighting games or those that require advanced logic to apply to clips, a scriptable object with an editor preview of the clip with definitions for hitbox/combo windows. Again, thanks!