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Re: Curves workbench
Posted: Tue May 24, 2022 2:21 pm
by adrianinsaval
Is there a way of obtaining such flatened faces from BSpline surfaces?
Re: Curves workbench
Posted: Tue May 24, 2022 3:08 pm
by Chris_G
In the specific case of developable BSpline surfaces, I suppose there is a way.
Re: Curves workbench
Posted: Tue May 24, 2022 8:02 pm
by pafurijaz
Great tool this new feature is useful and I hope it can be expanded with more options in the future, it's like the one that exists in Rhinoceros the command
UnrollSrf
I hope in future we can develop also a surfaces with
zero Gaussian curvature.
Re: Curves workbench
Posted: Tue May 24, 2022 8:27 pm
by saso
See my post here
https://forum.freecad.org/viewtopic.php ... ec#p582967 and the link in that post to an older topic where the two methods are shown (Chris_G flatten_face.FCMacro is now implemented as a tool in Curves WB). Note that the method with the mesh will allow you to flatten (unwrap) most faces but its precision will depend on the mesh and the type of the surface, as already noted surfaces that cannot be exactly flattened mathematical will be distorted.
Re: Curves workbench
Posted: Tue May 24, 2022 8:31 pm
by pafurijaz
saso wrote: ↑Tue May 24, 2022 8:27 pm
See my post here
https://forum.freecad.org/viewtopic.php ... ec#p582967 and the link in that post to an older topic where the two methods are shown (Chris_G flatten_face.FCMacro is now implemented as a tool in Curves WB). Note that the method with the mesh will allow you to flatten (unwrap) most faces but its precision will depend on the mesh and the type of the surface, as already noted surfaces that cannot be exactly flattened mathematical will be distorted.
Yeah I know this method with mesh I saw a tutorial by MangoJelly on Youtube, It's like the UV unwrapping with Blender.
Re: Curves workbench
Posted: Sat Jun 25, 2022 7:23 pm
by Vincent B
New feature I haven't try yet. How it supposed to do?
Re: Curves workbench
Posted: Sat Jun 25, 2022 9:15 pm
by Chris_G
Vincent B wrote: ↑Sat Jun 25, 2022 7:23 pm
New feature I haven't try yet. How it supposed to do?
When the points to interpolate are on a surface (FaceSupport property), these options allow to turn around the surface between each point.
This is an experiment. I am not sure it is really useful as it is.
But it allows to make custom spirals.
- spiral.png (177.72 KiB) Viewed 1456 times
Re: Curves workbench
Posted: Sun Jun 26, 2022 5:06 am
by hammax
... bravo, a new kind of heat exchanger
- CurvesSpiral.PNG (75.86 KiB) Viewed 1419 times
Re: Curves workbench
Posted: Sun Jun 26, 2022 8:49 am
by saso
Chris, I think you have to do something for the addon manager to see the latest updates...
Re: Curves workbench
Posted: Sun Jun 26, 2022 10:27 am
by Chris_G
I increased version number to 0.5
Is it good now ?