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I'd like to write a shader that works like the UV Along Stroke node from Blender.

Basically, I need UV coordinates that follow the edge of an object and wrap.

For clarity, I know how to do edge detection. But I need flowing UVs along the edges.

I'm OK with any shading language, but I honestly can't wrap my head around the math involved.

Ideally I'd like to do this without baking data into the mesh itself, but as a last resort I'm willing to consider it.

Any idea how to get started?

Blender UV Along Stroke

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