Wrong Offsets

Hello everyone,

I am trying to offset a bunch of curves, using the offset component but they are offsetting weirdly. I wanted them all to offset inside, so I can make surfaces using ruled surface. I don’t know why the component is doing this. If anyone has a solution please let me know :slight_smile:

Thanking you,

offsetWrong.gh (42.1 KB)

Grasshopper is not a “blender” where you throw geometries inside and it output what you have in your mind.

You used mixed curves with not uniform directions, alignment and parametrization… it’s difficult to hope in more than “wrong” results.
You are using grasshopper in the wrong way.

Outside a flat XY situation, offset command on a 3d curve is totally unpredictable.
You can build a surface out of your curves and use the surface normal (which is uniform) to create your curves, like with “Pull”.

offsetWrong.gh (53.1 KB)


Hi Riccardo,

Thank you so much for the solution. I am sorry I did not follow a proper procedure in making those curves, I will keep that in mind from next time whenever I have a doubt.

Yes, I understand that grasshopper needs to used in a certain way and I am learning that. But thank you for your help :slight_smile: