Hi Mike, you can actually get the text pattern that you're showing there already by doing a flow between a plane and an extrusion like this:
As far as restricting the surface normal instead - like you already mention that's a kind of special case type thing since anything with a 90 degree bend in it won't work.
It would also need some additional options in the UI to control which particular direction would be used.
I guess it would help me to see a particular kind of model that you were trying to create where the restricted surface normal option would be useful. For the most part if you want things going in a straight direction you can instead just have regular extrusions that get cut at the top and bottom with a boolean, you typically don't need to use flow for something like this:
- Michael
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