offsetTable

Let's assume our navigation bar has a height of 80, so it's driven by diffClamp(0, 80)
The position of the navigation bar is dictated by the inverse of that operation.

navBarTranslateY = multiply(diffClamp(0, 80), -1);

# Scenario 1

scrollY | navBarY | snapAmount
0       | 0       |
20      | -20     |
30      | -30     |
Release | *       | 30
*       | 0       | 
30      | -30     | <- We scroll again. NavBar position changes abruptly from 0 to -30
50      | -50     |

# Scenario 2

scrollY | navBarY | snapAmount
0       | 0       |
80      | -80     |
60      | -60     |
Release | *       | -20
*       | -80     | 
60      | -60     | <- We scroll again. NavBar position changes abruptly from -80 to -60
0       | 0       |