Published under the MIT Licence

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// TurtleToy Spirograph Script // Initial spirograph from Chat GPT // You can find the Turtle API reference here: https://turtletoy.net/syntax // Released under the MIT licence // https://mit-license.org/ // you can use this for commercial gain if you like eg you can sell artworks with this code. turtle = new Turtle var step = 0 // Adjust these values to change the appearance of the spirograph const R = 85; // min=1 max=100 step=1 // Radius of fixed circle const rMoving = 67.8; // min=1 max=100 step=0.1 // Radius of moving circle const Scale = 1; // min=0.2 max=5 step=0.1 const Steps = 238; // min=1 max=1000 step=1 const s = 38 // min=-100 max=100 step=1 function spirograph(R, r, Scale) { for (let t = 0; t < Steps; t += 0.1) { // Parametric equations for spirograph x = Scale * ((R - rMoving) * Math.cos(t) + s * Math.cos((R - rMoving) * t / r)); y = Scale * ((R - rMoving) * Math.sin(t) - s * Math.sin((R - rMoving) * t / r)); // Move the turtle to the calculated point turtle.goto(x, y); turtle.pendown(); } } turtle.penup(); spirograph(R, rMoving, Scale);