Region Union ignores inner closed crv

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Permalink Reply by Armin Seltz on July 19, 2016 at 3:15am

I think this is partly, because boolean operations in Grasshopper are a) a bit of a pain in the neck and b) usually not exactly what we expect.

In this case I think though it is actually doing the correct thing. If you are selecting all curves and then using union the inner curve will be "lost", because it is completely contained in the curve around it. Therefore a Union of those 2 will add those 2 areas together to create one. In the case of the other shapes, lets call them petals, the inner curve is not completely contained in the outer one, because it is just one continous curve. You will have to use Union on all but the innermost curve and then use Region Difference to create the "hole".