I remade one of my oldest products… just wanted to share this.
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How do you make the spiral move?
The movement is based on a central angle plus some offsets for each meh. Each mesh is positioned relative to the center, and the angle is increased or decreased depending on the drag direction. A bit of physics is added with friction, creating a smooth easing effect. There’s more to it than that, but this is the main concept.
I used a single radius for both the X and Y axes, but now that I think about it, I could have used separate values for radius X and radius Y. That could create some crazy variations and make the spiral not perfectly circular but oval. Maybe in the future… 
What I meant to say was what mouse or keyboard control do you use to make the spiral spin?
Ah left click and hold than move left or right.
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