Objective: Create an app that helps students understand the relationship between the RGB, HSV, and CMYK color models. Provide sliders that update automatically when the user changes any of them.
Problem: How do we convert between these different number sets?
Solution: The equations are available on the internet. Apple provides versatile sliders in the Interface Builder toolkit. These sliders update continuously when the user changes them. iOS is fast enough to deal with the many mathematical calculations in real time.