The Barnsley fern is a fractal named after the British mathematician Michael Barnsley who first described it in his book Fractals Everywhere. en.wikipedia.org/wiki/barnsley_fern

#Barnsley #fern #fractal

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Canvas.setpenopacity(-0.1); const turtle = new Turtle(); let x = 0; let y = 0; function walk(i) { turtle.jump(x * 15, 75 - y * 15); turtle.circle(0.1); const r = Math.random(); if (r < 0.01) { [x, y] = [ 0.00 * x + 0.00 * y, 0.00 * x + 0.16 * y + 0.00]; } else if (r < 0.86) { [x, y] = [ 0.85 * x + 0.04 * y, -0.04 * x + 0.85 * y + 1.60]; } else if (r < 0.93) { [x, y] = [ 0.20 * x - 0.26 * y, 0.23 * x + 0.22 * y + 1.60]; } else { [x, y] = [-0.15 * x + 0.28 * y, 0.26 * x + 0.24 * y + 0.44]; } return i < 100000; }