From the course: Grasshopper: Tips, Tricks, and Techniques

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Leveraging NURBS: Extracting planes from surfaces

Leveraging NURBS: Extracting planes from surfaces

From the course: Grasshopper: Tips, Tricks, and Techniques

Leveraging NURBS: Extracting planes from surfaces

- [Instructor] I have my exercise file open already. In this video I'm going to talk about extracting planes from a surface and then using those planes to build up additional geometry. In this scenario I'm imagining that this surface represents the panel of some larger object, and I'm going to build a frame to support it. If I bake this surface into Rhino and I untrim I can see this is a subsurface of a larger surface, and the parametrization is all over the place. The surface is twisted, we have a ton of UV distortion in the area that we're working, and this is really common if you're collaborating and you're getting surface geometries from other designers. So how do we work around this? First off I don't want to use the UV space to create the locations of my framing. I want to use the cornice system, the world cornice system, so let me go to surface, bounding box. I'm going to get the interval that this surface exists in, where it is in space. Plug in my surface, and then I'll go…

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