its in the ~gen book https://www.amazon.de/Generating-Sound-Organizing-Time-Thinking/dp/1732590311
couldnt recommend this enough! This is one of the best hands on synthesis books available imo (the miller puckette stuff is also great, but could be more up to date). But you are pretty fast running into limitations using SC.
And i have also made a thread about it: Ramp to trig abstraction
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