# `GSGlyphEditView.viewportAnimationDrivesDrawOrigin`

*Instance Property*

While `YES`, `scrollViewDidScroll:` no longer reconstructs `drawOrigin` from the clip view geometry.

## Declaration

```swift
var viewportAnimationDrivesDrawOrigin: Bool { get set }
```

```objc
@property (nonatomic) BOOL viewportAnimationDrivesDrawOrigin;
```

```python
viewportAnimationDrivesDrawOrigin() -> bool
setViewportAnimationDrivesDrawOrigin_(viewportAnimationDrivesDrawOrigin: bool)
```

## Discussion

The viewport animation drives it directly via `setViewportAnimationDrawOrigin:` instead. Set by `GSFrameView` for the duration of a viewport animation, because the clip view scroll can lag under load.