Offset on surface question

Replies to This Discussion

Permalink Reply by Pieter Segeren on August 4, 2011 at 2:37pm

Hi Puay, if you set the Radius in your definition a bit smaller, the inner offset curve won't self intersect. Btw you can use the offset curve on surface component directly on the 4pointsurface.

Permalink Reply by Puay Khoon YEO on August 4, 2011 at 6:57pm

Hi Pieter,

yes i know that works but because i am putting the definition through the Galapagos solver, i need the offset to work for every possible radius.

thanks for the tip on connecting the 4pointsurface directly!

Permalink Reply by Pieter Segeren on August 5, 2011 at 3:54am

Hi Puay, maybe you can get it to work with this. Hope this helps.

Attachments:

• OffsetCrvOnSurf_PSG.gh, 5 KB

Permalink Reply by Arthur Mamou-Mani on August 5, 2011 at 4:06am

Hi Puay Khoon,

 

Your offset curve on srf component is controlled by a series and when the series component generates a number which is above the maximum offset allowed, you will get a self-intersection as Pieter said.

 

What I would recommend is to either work with a larger geometry or constrain your "radius" slider to a number which is always below the offset limit. In your current geometry this limit is 8.52 (distance between centroid and closest point to centroid).

 

Maybe you could try to identify this limit in GH by finding the closest point to centroid and measuring its length. With this limit you can use a Minimum  component (returns the lesser of two items) which will always make sure the offset value never goes beyond that?

 

Hope that helps