Fix vertical zoom factor in Animation Bezier Editor

editor/animation_bezier_editor.cpp

@@ -1548,7 +1548,8 @@ void AnimationBezierTrackEdit::_zoom_callback(float p_zoom_factor, Vector2 p_ori
 		// Alternate zoom (doesn't affect timeline).
 		timeline_v_zoom = CLAMP(timeline_v_zoom * p_zoom_factor, 0.000001, 100000);
 	} else {
-		timeline->_zoom_callback(p_zoom_factor, p_origin, p_event);
+		float zoom_factor = p_zoom_factor > 1.0 ? AnimationTimelineEdit::SCROLL_ZOOM_FACTOR_IN : AnimationTimelineEdit::SCROLL_ZOOM_FACTOR_OUT;
+		timeline->_zoom_callback(zoom_factor, p_origin, p_event);
 	}
 	timeline_v_scroll = timeline_v_scroll + (p_origin.y - get_size().y / 2.0) * (timeline_v_zoom - v_zoom_orig);
 	queue_redraw();
@@ -1823,7 +1824,6 @@ void AnimationBezierTrackEdit::_bind_methods() {
 AnimationBezierTrackEdit::AnimationBezierTrackEdit() {
 	panner.instantiate();
 	panner->set_callbacks(callable_mp(this, &AnimationBezierTrackEdit::_pan_callback), callable_mp(this, &AnimationBezierTrackEdit::_zoom_callback));
-	panner->set_scroll_zoom_factor(AnimationTimelineEdit::SCROLL_ZOOM_FACTOR);
 
 	play_position = memnew(Control);
 	play_position->set_mouse_filter(MOUSE_FILTER_PASS);

editor/animation_track_editor.cpp

@@ -1868,7 +1868,7 @@ AnimationTimelineEdit::AnimationTimelineEdit() {
 	len_hb->hide();
 
 	panner.instantiate();
-	panner->set_scroll_zoom_factor(SCROLL_ZOOM_FACTOR);
+	panner->set_scroll_zoom_factor(SCROLL_ZOOM_FACTOR_IN);
 	panner->set_callbacks(callable_mp(this, &AnimationTimelineEdit::_pan_callback), callable_mp(this, &AnimationTimelineEdit::_zoom_callback));
 	panner->set_pan_axis(ViewPanner::PAN_AXIS_HORIZONTAL);
 
@@ -6837,7 +6837,7 @@ AnimationTrackEditor::AnimationTrackEditor() {
 	timeline->connect("length_changed", callable_mp(this, &AnimationTrackEditor::_update_length));
 
 	panner.instantiate();
-	panner->set_scroll_zoom_factor(AnimationTimelineEdit::SCROLL_ZOOM_FACTOR);
+	panner->set_scroll_zoom_factor(AnimationTimelineEdit::SCROLL_ZOOM_FACTOR_IN);
 	panner->set_callbacks(callable_mp(this, &AnimationTrackEditor::_pan_callback), callable_mp(this, &AnimationTrackEditor::_zoom_callback));
 
 	scroll = memnew(ScrollContainer);

editor/animation_track_editor.h

@@ -134,7 +134,8 @@ class AnimationTimelineEdit : public Range {
 	friend class AnimationBezierTrackEdit;
 	friend class AnimationTrackEditor;
 
-	static constexpr float SCROLL_ZOOM_FACTOR = 1.02f; // Zoom factor per mouse scroll in the animation editor. The closer to 1.0, the finer the control.
+	static constexpr float SCROLL_ZOOM_FACTOR_IN = 1.02f; // Zoom factor per mouse scroll in the animation editor when zooming in. The closer to 1.0, the finer the control.
+	static constexpr float SCROLL_ZOOM_FACTOR_OUT = 0.98f; // Zoom factor when zooming out. Similar to SCROLL_ZOOM_FACTOR_IN but less than 1.0.
 
 	Ref<Animation> animation;
 	bool read_only = false;