How do I create an adze wood texture like this?

Grasshopper
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1

I have a curved surface that I would like to apply this kind of adze wood texture to.

adze-birch-lge
adze-birch-lge800×600 66.4 KB

I know I could just take this exact image and turn it into a heightmap or whatever it’s called, but I would rather have the pattern itself be generated with grasshopper so I can have more fine grain control over the pattern.

My guess is a voronoi would replicate the pattern closely enough, though I would need the voronoi cells to be more elongated which I’m not sure how to do. What I’m really not sure of is how to get the “scallop” effect that you see in the image, Nor do I know how to apply this kind of pattern to my curved surface

2

Special Surface - Grasshopper - McNeel Forum

Hammered metal effect onto the curved surface of solid or mesh models - Grasshopper - McNeel Forum

How can I make this pattern? - Grasshopper - McNeel Forum

If you need more inspiration, search for ‘scallop’ and/or ‘voronoi’