For many years I’ve tried to learn how to use Adobe Illustrator, with not much luck. This semester I took a 1-credit class at my college to learn, once and for all, how those damned layers work. It turned out to be really interesting – and the curve-drawing (Bezier curves) is all based on concavity, changes in concavity, tangent lines, and slopes. So, it turns out that there’s a lot of mathematics in the back-end of Adobe Illustrator.
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