P3DR0

I thank you very much for your answer which helps me a lot to understand how it works ! this is the result I expected. I would like to know if we can make the circle go directly from 0° to -90° with 1 scroll to align perfectly the image of the top of the circle.

hello everyone, I am a beginner, and I would like to know if it is possible to create "steps" to present each image on the spinning wheel. I would like that: when scroll down once the wheel rotates -90° and the description only related to the image is displayed with a fade effect. after, when the wheel turned 3x (to present the 4 images with their respective descriptions) it continues to go down and vice versa when scroll up. I tried to do something on codepen while searching on the internet but I'm stuck ... thanks for your help.