2D muscle fiber / wood grain patterns

Hi folks, I’m looking to create a 2d line pattern similar to the one below. I tried duplicating the components, but it looks like they may be from an earlier version of grasshopper. I downloaded the Pufferfish plug-in, but am getting lost (I’m relatively new to grasshopper).

My intent is to mimic a wood-grain and/or muscle fiber pattern – can anyone point me towards a good starting point or tutorial? I’d like to be able to control the specific locations of the ‘voids’ and control points.

Thanks!


Check out “Pinch And Spread” from the Pufferfish plugin!
Pufferfish

You can look at that also