Soft scroll animation NSScrollView scrollToPoint:

Question

I want to create soft animation between transitions in simply UI:

Answer 1

Here is a Swift 4 extension version of Andrew's answer

extension NSScrollView {
    func scroll(to point: NSPoint, animationDuration: Double) {
        NSAnimationContext.beginGrouping()
        NSAnimationContext.current.duration = animationDuration
        contentView.animator().setBoundsOrigin(point)
        reflectScrolledClipView(contentView)
        NSAnimationContext.endGrouping()
    }
}