Unroll Surface error


I am having problems unrolling a few periodic surfaces using opennest. I even tried using the standard unroller, but it was having similar problems.

Could anyway tell me what I am doing wrong here? I tried replicating the error using different geometry, but I couldn’t.

The surfaces are frustums. I tried converting it to a mesh and getting results, but those are returning broken results.

test_unroll.gh (37.2 KB)

The error it gives is:

  1. Solution exception:Object reference not set to an instance of an object.

Any help is appreciated, thanks!

I am not sure how you create these surfaces but rebuilding the works in a correct unroll

test_unroll (1).gh (43.2 KB)

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Thank you for your answer. Will look into it. Even for creating those original surfaces, I had used a loft with flipped and aligned curves. But still unsure as to what caused the error.