So, I’ve used to having the complexity of a surface increase after aligning it curvature to other surfaces, but I must have managed to push from my brain that Rhino doesn’t just do that, but can add entirely new surfaces due to this operation. [image] [image] I don’t see at all why this is neces…

The surfaces have fully multiple knots. Running the RemoveMultiknot command and checking the option remove fully multiple solves it.

Oof… ok, found out where that came from (Rhino surfaces round tripped through another CAD package). I wish the MatchSrf command would warn me and present me with that option though, instead of having to go to the forum and asking experts all the time (would probably free you up to do better things)…

[image] Gijs de Zwart: The surfaces have fully multiple knots. Running the RemoveMultiknot command and checking the option remove fully multiple solves it. Users should be aware that removing multiple knots usually changes the shape of the curve or surface. Frequently the changes are small en…

I’ll ask what can be done. [image] David Cockey: Users should be aware that removing multiple knots usually changes the shape of the curve or surface. Frequently the changes are small enough to be insignificant but not always. yes, that’s true. Alternatively you could use RemoveKnot once to…

[image] Gijs de Zwart: Alternatively you could use RemoveKnot once to prevent it from becoming a polysurface, How does RemoveKnot prevent it from becoming a polysurface? Also RemoveKnot in general changes the shape. (InsertKnot does not change the shape.)

[image] David Cockey: How does RemoveKnot prevent it from becoming a polysurface? If I remove one knot, closest to the matched side, the fully multiple becomes a multiple, and no longer results in a split at that point. [image] David Cockey: Also RemoveKnot in general changes the shape. …

The desirable and appropriate way to add the option of no multiple knots / polysurface would be to change the portion of the matching algorithm which creates the multiple knots so that it provides a match within tolerances without using multiple knots.

Match turns surface into polysurface

Rhino

eobet (eobet) November 4, 2024, 2:16pm 3

Uploaded via the uploader, as this is a live client project.

(Also, already have the workaround by using RebuildUV first, but that has its own issues.)

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Match turns surface into polysurface

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