I have here 108 surfaces. The surfaces are made by splitting a loft with split brep. The loft has curvature. The surface is a trimmed surface. The evaluating surface outputs a point and plane that is on a constant height, as if its being projected (both reparamatrised and not). Any ideas why this happens? I can work around it, but im just curious if there is a learning opportunity here.
What is your goal? What do you evaluate the trimmed surface for?
I think it evaluates the untrimmed surface. Trims are only âillusionsâ in a sense.
What I mean by this is, surfaces are usually defined in a rectangular domain in u and v (like x and y for points, vectors and such). Reparameterising the surface normalizes this uv-domain to be from u: 0.0 to 1.0 and v: 0.0 to 1.0. This is similar how you would normalize or unitize a vector.
Trims are usually curves defined in the same surfaceâs parameter domain (i.e.; uv space) that define which portion or region gets used or rendered, but the underlying surface is where much of the action happens.
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If all your trimmed surfaces are still ârectangularâ or 4-sided, you can reinterpret them as untrimmed by regenerating them as Edge Surfaces (using their four edges), 4 point surfaces (using their four corners), network surfaces, new lofts or ruled surfaces, etc., depending on each case. Otherwise, you could also make subsurfaces from your parent surfaces via divide domain squared.
Thanks. I just deconstructred the surfaces and rebuilt them as ruled surface, that works for the geometry Iâm building.
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Thanks, a work around was simple enough, I just wanted a better understanding of whats happening under the hood.