use of mixed curves

[berunous]

I drew two Bsplines after having selected them I click on mixed curves. I get the following error message
"18:06:10 Traceback (most recent call last):
File "C:\Users\Acer\AppData\Roaming\FreeCAD\Mod\Curves\.\freecad\Curves\mixed_curve.py", line 86, in execute
mixed = obj.ExtensionProxy.approximate(obj, cc.shape())
File "C:\Users\Acer\AppData\Roaming\FreeCAD\Mod\Curves\.\freecad\Curves\mixed_curve.py", line 44, in shape
curves += f1.Surface.intersectSS(f2.Surface)
<class 'RuntimeError'>: Intersection of surfaces failed
18:06:10 Recompute failed! Please check report view."

have you ever encountered this difficulty?

[thomas-neemann]

...

is that helpul?

https://www.youtube.com/watch?v=aVbcNiGIpd8

phpBB [video]

[Chris_G]

The two properties Direction1 and Direction2 are set to (0, 0, 0)
They are needed to indicate the extrusion direction of each input curve.
This can be done by setting the desired camera direction when you select the input curves.
With the attach file, this would be :
- set the view to Top View (NumPad 2)
- select the Freehand_BSpline
- set the view to Front View (NumPad 1)
- CTRL + select the Freehand_BSpline001
- click MixedCurve icon.

[berunous]

Ok,is good Christ, but could you explain the sentence below. To allow us to find the different operating modes that must be chosen according to the context of the drawing. example in the tutorial of the previous message it is not the same operating mode.

"Both properties Direction1 and Direction2 are set to (0, 0, 0)
They are needed to indicate the direction of extrusion for each input curve."