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Content """ Gyrofractal =========== Generates and slowly zooms in on a Julia Fractal set """ import display import utime import buttons #======>>CREDIT: Most fractal generation code stolen from https://www.geeksforgeeks.org/julia-fractal-python/ #Device resolution: 160x80 w, h, zoom = 32,16,0.001 xBuffer, yBuffer = 16, 8 pixelSize = 4 cX, cY = -0.7, 0.27015 moveX, moveY = 0.0, 0.0 maxIter = 255 gs = 140 colors = [ ((i>>2)*gs, (i>>1&1)*gs, (i&1)*gs) for i in range(0, maxIter + 1) ] with display.open() as d: d.clear() d.update() d.close() with display.open() as d: while True: print("----------------NEW LOOP START-----------------") for x in range(w): for y in range(h): zx = 1.5*(x - w/2)/(0.5*zoom*w) + moveX zy = 1.0*(y - h/2)/(0.5*zoom*h) + moveY i = maxIter while zx*zx + zy*zy < 4 and i > 1: tmp = zx*zx - zy*zy + cX zy,zx = 2.0*zx*zy + cY, tmp i -= 1 d.rect(xBuffer + x * pixelSize, yBuffer + y * pixelSize, xBuffer + x * pixelSize + pixelSize, yBuffer + y * pixelSize + pixelSize, col=(255-i,255-i,255-i), filled=True) d.update() print("======================ONE LOOP COMPLETED=========================") if(buttons.read(buttons.BOTTOM_RIGHT)): moveX += 0.1 if(buttons.read(buttons.BOTTOM_LEFT)): moveX += 0.1 if zoom < 0: zoom += 0.2 elif zoom < 1: zoom += 0.1 elif zoom < 3: zoom += 0.01 else: zoom += 0.005