3 ms·

Apple used straight segments and circular arcs on its icons upto iOS 6, and switched to 2nd-order continuous shapes on version 7. Here is a side-by-side compar

Apple used straight segments and circular arcs on its icons upto iOS 6, and switched to 2nd-order continuous shapes on version 7. Here is a side-by-side comparison : https://blog.mikeswanson.com/photoshop-script-for-ios-7-rounded-rectangles/ https://blog.mikeswanson.com/photoshop-script-for-ios-7-roun... Your visual system can actually see those discontinuities.

ReleaseCandidat 2y ago
> Your visual system can actually see those discontinuities. Because it's also the biggest difference of curvature (actually the radius of curvature, the inverse of the curvature value, which is what is geometrically significant, "what we see") possible, the one between infinity (a line is a circle with an infinite radius) and a "normal" (finite) value.
Etherlord87 2y ago
It's actually much more prominent in 3D reflections, because this 2nd derivative ("acceleration") affects the "flow" of the reflection: https://i.stack.imgur.com/pctnj.png https://i.stack.imgur.com/pctnj.png I wrote a post about this on Blender Stack Exchange: https://blender.stackexchange.com/a/306616/60486 https://blender.stackexchange.com/a/306616/60486