Replicate Apple Maps overlay

We find overlays in many Apple native apps like Shortcuts, Maps andStocks. How to replicate it ?

The overlays presented in the different Apple applications do not look exactly the same. In Stocks, the overlay looks a bit viscous for instance. I focuses my research on the overlay displayed in the Shortcuts app. It helped me to reproduce some edge cases.

Let’s analyse it :

• There is a smooth transition between the scroll and the translation. This is the most important point. The user can continuously scroll or drag the overlay in a single gesture.