More reading on surfacing at Apple: https://hackernoon.com/apples-icons-have-that-shape-for-a-very-good-reason-720d4e7c8a14 https://hackernoon.com/apples-icons-

More reading on surfacing at Apple: https://hackernoon.com/apples-icons-have-that-shape-for-a-very-good-reason-720d4e7c8a14 https://hackernoon.com/apples-icons-have-that-shape-for-a-ve... Apparently they use Autodesk Alias. Same techniques are used for surfacing in the auto industry.