Ha ha that SIN function on the screen reminded me of how slow operations like SIN and COS were on the old BBC Computers. You had to think before you did stuff l

Ha ha that SIN function on the screen reminded me of how slow operations like SIN and COS were on the old BBC Computers. You had to think before you did stuff like that. I remember figuring out that using pythag x^2+y^2 =1 therefore y=sqrt(1-x^2) was a much faster way to draw a circle than SIN/COS.