How to make a conical gradient in iOS using Core Graphics / Quartz 2D?

Question

How can I draw such a conical gradient in iOS using Core Graphics / Quartz 2D API?

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Answer 1

I wanted pure Swift solution for this, and it was also kind of a challenging task for me.

At the end, I wrote AEConicalGradient which does that with interesting approach (by using a circle and drawing lines of different colors to the center).