Paint Stroke Direction Analysis

Keeping up with the theme, I wanted to try alternate ways of finding the paint stroke directions. Here I radially sample around the current point, finding the direction to which there is most change. The paint stroke direction should be perpendicular to the found vector. Kinda sorta works but clearly would need further development, but, hey, daily hip 🙂

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Advecting points through the vector field gives some funky squiggles: