Offset curve on brep decrementally with anemone

Grasshopper
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Dear friends,
I am trying to using anemone to offset curve on brep decrementally , but it doesn’t work. Can anyone help to point it out?

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11400×713 186 KB
offsetCurve_recursive.gh (145.7 KB)

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  1. Disconnect the wire from Loop End ‘Exit’ input
  2. Right-click Loop End and enable ‘Record data’
  3. There is no good reason to enable ‘Output after the last’ as you have done.

Optionally, bypass the Reverse normal vectors?

All that said, your algorithm may just not work as you like…

Anemone_2020Dec13a
Anemone_2020Dec13a556×864 69.3 KB

1 Like
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Here is a different approach to failure. Swapping the ‘0’ and ‘1’ inputs to P’n’C tries to inset instead of offset but also fails. Maybe food for thought?

Anemone_2020Dec13b
Anemone_2020Dec13b1852×713 167 KB

Anemone_2020Dec13b.gh (149.1 KB)

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I tried many different things with Anemone, none were satisfactory. The best I could do was project the Clipper PolyOffset “holes” (the ‘H’ output) back onto the brep. No Anemone.

offsetCrv_2020Dec13a
offsetCrv_2020Dec13a1102×585 74.8 KB

offsetCrv_2020Dec13a.gh (140.5 KB)

1 Like
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Sorry for this late and thanks for your reply. Yeah, indeed, with anemone neither with Reverse normal vectors nor without it, it doesn’t work quite well. With small amont, it still has some faults

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a1
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In both case, the problem seems to come from the bottom there.

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Thanks your idea, this is really a clever way to avoid the messiness of the Anemone situation. could this result in the distance difference of the projected curves on the brep? well, I didn’t ask this in my topic, thanks again anyway :smiley: