Curves workbench

[hammax]

… abused your frame sketch picture,
built a new frame by a 7-control-point Sketcher BSpline
Scaled 2 clones and made a Loft.
If the frames are "smooth" the hull also will be.

G_Loft.PNG (33.04 KiB) Viewed 2128 times

[hammax]

… and here a possible workflow.
Different frame sketches.
Also with a final Gordon surface.

BSpline_constr_2.PNG (102.55 KiB) Viewed 2085 times

[Will_C]

… and here a possible workflow.
Also with a final Gordon surface.


BSpline_constr_2.PNG

Thank you Hammax.

I will try this approach then

[Vincent B]

A idea:
Why not use isocurve to make points instead a mesh. (should be an option)
With theses points, we will able to rebuild a new surface (smoothed?) and mix several cloud points to create a new mixed surface with the approximate feature.
...
and thank you for the new feature Line.

[soaring]

@Will_C, dont hesitate to share your progress about fuselage to the thread of best practice, i guess it can help other too "Best practice: fuselage + wing" : https://forum.freecadweb.org/viewtopic. ... 14#p363614

@hammax thank you for your file "Gord_Loft_2" very helpful ! Dummie question, but in this file, do you know a possibility to get a solid from the Gordon or Gordon_mirr objects ?

@Chris_G : fantastic job, lot of gratitude !

[freecad-heini-1]

Ping

Hi Chris,
Please look at Blend Curve. The end of the curve is not at the edge, but offset on the surface. This looks like a mistake.

blend_curve_wrong_position.png (26.44 KiB) Viewed 1864 times

sweep_zwei_bleche_90-grad.FCStd

(15.65 KiB) Downloaded 57 times

Maybe you can look for this feature request at this time:

Hi Wilfried,
I looked at the video.
I see what you ask for.
This should be possible pretty easily.
I lack free time, but I'll give a try when possible.

Best regards
Wilfried

Code: Select all

OS: Ubuntu 18.04.3 LTS (XFCE/xubuntu)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.
Build type: Release
Python version: 3.6.9
Qt version: 5.9.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: German/Germany (de_DE)
27.01.2020

[Chris_G]

Please look at Blend Curve. The end of the curve is not at the edge, but offset on the surface. This looks like a mistake.

This should be fixed now.

[Chris_G]

I added a new tool : Multi-Loft
The goal is to loft "multi-face" objects like shapestrings.

multiloft.png (206.19 KiB) Viewed 1806 times

[freecad-heini-1]

Thank you very much Chris, and whow, a new Feature to play with.

What about my feature request / wish for to improve the blend curve?:
https://peertube.mastodon.host/videos/w ... 9f8a5510d0

[chrisb]

I have more and more the feeling that this workbench should be part of core FreeCAD!