Grasshopper

algorithmic modeling for Rhino

Solid difference / Solid intersection problem

Hi guys. I need to trim a surface with another. Geometries are do with the same definition as U can see, but I don't know why several surfaces can be trimmed with Solid Diff [IMG 1] and several with Solid Int [IMG 2]? Is there anyone that could tell me why this?! Any suggestions for trim these? Thanks in advance. 

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Replies to This Discussion

Permalink Reply by Landscape on May 2, 2013 at 9:45am

Anyone could help me? I hate this problem ... 

Permalink Reply by Danny Boyes on May 2, 2013 at 9:59am

The problem you face is that not all objects are solid. Which means the Surface Normals are open to interpretation by rhino about which way is in and which way is out. If you flipped one of your cutting surfaces then you would probably get consistent behaviour the alternative is to cap them 

Permalink Reply by Landscape on May 4, 2013 at 4:22am

Yes, it's a Surface Normals problem. Solve it with flipping. Thanks a lot Danny.

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