Pretty new to Rhino but thought I was getting the hang of it but a bit stumped with my loft.
I have a curve I’ve created and I want to loft it to an edge of a poly surface. But I cannot get the full edge. I can only get a portion of it to be lofted.
The surface was made from lofting two curves I created in Adobe Illustrator and imported into Rhino. The independent curve on the left side of the screen I created in rhino.
I thought I could explode the surface and them merge them together which made one surface but that didn’t help with the loft. See image for reference.
Hi Drew - can you post the surfaces? The edge you are lofting to looks like one of three edges - you can DupEdge and join all these edges into a single curve but it may be a messy loft - post the inputs, I’ll take a look.
Yeah more or less… Mainly I want to know why I can’t use the full edge of the surface? Why does Rhino only grab like 90% of the poly surface edge and not the entire thing. It’s kind of a workflow question. I just want to super quick loft that curve to the edge of the surface but it seems like I have dup a surface curve and join them… seems like lofting from a curve to the full span of the of the poly surface edge is something I should be able to do. So I feel like I’m missing something important.
Hi Drew - assuming you lofted the curves in your file - you’ll see that the curves have very different structures
The far curve is a polycurve composed of two degree 3 curves joined, the middle one is two degree 3 curves and two linear (tangent but not curvature continuous) curves all joined, and the near one is a single (un-explodeable) degree 3 curve. Loft is happiest when all the inputs match one another,otherwise the result gets more complex, as a rule. You can work around this using the Rebuild setting in Loft - with that, the curves used internally to create the loft are made compatible, at the expense of possibly not corresponding exactly to the actual input curves.
