Curves workbench

[Chris_G]

Haha, in fact, the zig-zag curvature bug is my fault
The "Detect aligned" property should be on False by default.

[freecad-heini-1]

Ping

Hi Chris, please check the reflect-lines tool, in Freecad daily build for Ubuntu it doesn't work properly anymore.
Best regards
Wilfried

[Chris_G]

It's working fine for me (but I have a couple of modified files that are not on Github).
Do you get some error message ?
Or an example file, maybe ?

[freecad-heini-1]

A video:

Reflect_lines-2019-09-04_14.37.38.webm

(440.66 KiB) Downloaded 33 times

The file:

Scheibe_zwei_Winkel.FCStd

(16.36 KiB) Downloaded 14 times

My Freecad info:

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: 3.6.8
Qt version: 5.9.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: German/Germany (de_DE)

I tried the Appimage, it work correct:

Code: Select all

OS: Ubuntu 18.04.3 LTS (XFCE/xubuntu)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.17499 (Git) AppImage
Build type: Release
Branch: master
Hash: 6b1be38f35686faf21e1015bf562520929890870
Python version: 3.7.3
Qt version: 5.9.7
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: German/Germany (de_DE)

[Chris_G]

I don't get any error.

Code: Select all

OS: Ubuntu 18.04.3 LTS (KDE/plasma)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.
Build type: Release
Python version: 3.6.8
Qt version: 5.9.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: French/France (fr_FR)

[GlouGlou]

This sketch give a BOPAlgo GeomAbs_C0 error through a JoinCurve.
That carry out this error with any surface.
Any suggestion?

[GlouGlou]

We don't have these options for SplitCurves?

[LLuoss]

...sweeping with 2 rails:

Hi,
The Sweep On 2 Rails requires 3 steps.
Please update the Workbench, since I added a tool yesterday.

Step 1 -> create a Birail object out of 2 edges


sw2r-1.jpg


Step 2 -> select the Birail and the profiles and create the Sweep on 2 rails


sw2r-2.jpg


Step 3 -> Approximate the point cloud with a surface


sw2r-3.jpg
sw2r-4.jpg


I don't think it will work on closed profiles.
It also requires at least one profile at each end.
This is highly experimental Work In Progress.

Hi,glad to see u again!I'm confused how to do these three steps with python code?Do you have any simple code examples for these three steps?Looking forward to your reply!Thanks!

[Chris_G]

This sketch give a BOPAlgo GeomAbs_C0 error through a JoinCurve.
That carry out this error with any surface.
Any suggestion?

I don't know the reason for the C0 continuity. I can get C1, but only with very high tolerance setting.
In this case, I would suggest to discretize (set Target to "Wire" ) and approximate the sketch.

We don't have these options for SplitCurves?

I modified the tool recently.
It is now possible to set multiple split points.
The Values property is a string list :

split-3.jpg (38.32 KiB) Viewed 522 times

Positive values are computed from edge start.
Negative values are computed from edge end.

[Chris_G]

Hi,glad to see u again!I'm confused how to do these three steps with python code?Do you have any simple code examples for these three steps?Looking forward to your reply!Thanks!

Don't use this, it is outdated.
Use the Gordon surface.
I already answered about the Gordon surface scripting :

Code: Select all

import gordon
gordon = gordon.InterpolateCurveNetwork([bs0,bs1,bs2], [bs3,bs4,bs5], tol=0.1) # the bs* are BSpline curves
my_surface = gordon.surface()