I was doing a level 2 training manual exercise which involves sweeping 1 rail (see attached) spans.3dm (132.0 KB)
The input curves for the rail are is minimal/clean as possible to describe the shape, but the generated surface has many spans. Why does Rhino build such dense surfaces when the input curves are clean? Is it because the rail curve is joined? If I were to explode the rail curve and sweep 1 rail, one at a time, for the individual curve segment, it would generate single span surfaces which could then be joined together for a cleaner surface, but this takes much longer…
It would be cool if the rail curve could be exploded and then chain edges could factor the start and end point of input curves into building clean single span surfaces, so it is not a manual one-at-time surface build.
Hmmmmmm, that is strange. Does it have something to do with the underlying curve direction (ShowDir). Could it be something to do with whether curves are selected in a clockwise or counter-clockwise chain?