Curves workbench

[Petrikas]

In the Surface.Filling UI, in the list of boundary edges, you can double-click an edge to choose its attached face and G1 continuity.

OH MY WORD!! Why is that a double click!? Haha, thank you so much!

[keithsloan52]

Nice YouTube video that in the end uses the Curves Workbench to create a nice ring
https://www.youtube.com/watch?v=93LIxgRXeew

[Vincent B]

Sometimes Gordon lead to a freecad crash. Maybe a test before for compatibility avoid that?

[Vincent B]

With this case, "force contact "make like a "force close". Is it a bug or not?

[Chris_G]

If I open your file and look at the input edges of joinCurves, I see that they are doubled ???

Code: Select all

FreeCAD.getDocument('JoinForceContact').getObject('JoinCurve').Edges
# --> [(<Part::PartFeature>, ('Edge1', 'Edge1', 'Edge2', 'Edge2', 'Edge3', 'Edge3'))]

If I edit this property and accept it without any modification, it fixes the bug.

[Vincent B]

Maybe something wrong when I extract edges from the sketch.

[Vincent B]

Do you think it could be possible to include a point instead an edge to close the gordon here?
Because Filling make an ugly surface when gordon make a perfect one.

[Pauvres_honteux]

Do you think it could be possible to include a point instead an edge to close the gordon here?

Anything to do with the infamous "three-point-surface/face"-problem? Didn't @emills2 try to tackle that problem some years ago? Wonder if he solved it?

Hmm, would making faces/surfaces oversized help in any way?

[Chris_G]

Do you think it could be possible to include a point instead an edge to close the gordon here?
Because Filling make an ugly surface when gordon make a perfect one.

I see 2 solutions :
- the most difficult would be to allow points directly into Gordon algo.
- an easier workaround would be to make a little macro that moves all the poles of 1 of the 4 boundaries of a BSpline Surface to a single point.
The user would have to build his surface with a very small edge, and use the macro to degenerate the edge to a point.

[hammax]

... trying to reduce the front frame of the Gordon surface to a minimum, I apparently get trouble with some tolerances.
Reducing the front frame under 2mm it refuses - no chance found, to improve tolerances. ????
Edit: reducing the dimensions of the frontsketch AND also of side- and bottom sketch it works.
There seems to be no tolerance problem.

G_withoutPoint.PNG (25.43 KiB) Viewed 1603 times