Surface to surface tangency via a common curve

[FreeCAD-Bug-Importer]

Issue imported from https://tracker.freecad.org/view.php?id=4615

• Reporter: Pauvres_honteux
• Date submitted: 4/5/2021
• FreeCAD version: 0.2
• Category: Feature
• Status: new
• Tags: toponaming

Original report text

Forum discussion: Surface to surface tangency
Request for development of the possibility to create a tangent surface with respect to another surface sharing a common curve.
The curve shall be the parent of both surfaces.
No approximation of curves or surfaces is allowed.

Make file "Arbitrary four-sided surface" to work according to what is stated above:
Arbitrary four-sided surface

Other bug information

• Priority: normal
• Severity: feature
• Category: Feature
• Updated: 4/11/2021

Discussion from Mantis ticket

Comment by Kunda1 2021-04-05 11:09

Looks like there has been some effort already by wmayer in

• 3a8a6aa(forum post)
• a4176fa (forum post)
• a4176fa (forum post)

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Comment by Pauvres_honteux 2021-04-05 11:52

Kunda1, you do realize you've linked to the same thread as I did? Hence I already know all that and have tested it and it does not work for the requested "Surface to surface tangency via a common curve".
The way it works as of now is via an surface edge and that makes the model extreamly affected by topo naming, no matter how good Realthunders algo works. Please reread the topic and try to understand how one create rock solid, linked, geometry. That is, via a common curve as a parent for both surfaces.

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Comment by Kunda1 2021-04-05 13:35

Pauvres_honteux Yes, I do realize that. My intention was to summarize by linking to the code that has already been contributed. This way, devs have a summary of what's been done on the source code side of things.