Not sure I understand, if it's simple enough to paint by hand each set of huts with the same orientation, cant you make a greyscale map with one value of grey for one orientation (all parallel roads) and another grey for another orientation (perpendicular to the first set of roads) and so on.
Then you  can use a different rotation (0, 90,45 etc) for each layer(or in a mixed material?)  using only one hut, or having your differently oriented huts in each layer and a rotation of 0.
From your other thread I thought you wanted something which will automatically detect the direction of the near roads.

"I paint that which comes from the imagination or from dreams, or from an unconscious drive. I photograph the things that I do not wish to paint, the things which already have an existence."
Man Ray, modernist painter
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