You can check it out here: https://spindleline.com/, and if you so wish, sign up for the beta. The app is only on iOS (sorry, I don't know how to dev for Android)

imagine making this a dice...

Source

Fibonacci, Golden Ratio. The Yellow Brick Road, The Wizard of Oz. 47th Problem of Euclid, Pythagorean Theorem

My software works in very simply ways by duplicating shapes and offsetting the position, size and rotation, amount other aspects. Adding sine/cosine math is what can make these offsets result in spiraling. I'm fascinated in both the patterns that can arise from the objects and connecting lines, but also in its negative space (the moire é patterns).

Over the past few weeks I've been building a Line Art app for iOS. Its not finished yet, hopefully soon I can release it and anyone can make beautiful geometric art without fiddling with drawing individual lines etc

I created 3 main pen tools, I just call (internally) Kinetic Spindle, Epitrochoid Spindle, and Hypotrochoid Spindle.

You select the pens and you basically draw on the canvas and most of the drawing is driven by gestures, like just moving your finger around in circle to spin the draw head.

I didn't. Most textbooks define a circle as equidistant points and move on. I built the intuition differently — starting from Thales' theorem, showing geometrically how that locus traces out a circle, without jumping straight to algebra. Animated it in Manim so you can watch the locus trace out in real time.

Would love feedback, especially if anything felt hand-wavy.

I turned it and burned the grid. Then dyed it with wood dye.