Spline suddenly changed behavior

[JornWildt]

What happened to my splines? I'm in the process of building a P-47 model and spent quite some time drawing it in CAD. Now, all of sudden, the splines on the wing's trailing edge are all messed up

I have attached a screendump from QCAD and the CAD-file I'm working on. You can see how the trailing edge is all wonkers where it should have followed a nice even curve of the original P-47 wing form.

The only thing, I can think of being changed since I saw it as it should be last time, is that I have upgraded to a newer version of QCAD ... are there any known problems here?

(Using QCAD Professional 3.24.3.0 (3.24.3) on Windows)

[CVH]

Hi,
Maybe this will do the tick:
Misc .. Modify .. Reset Spline Tangents

Regards,
CVH

[JornWildt]

Okay, that worked, thanks ... but what could have been the cause of this?

[CVH]

On the question 'What happened' :
Some of the splines had 0.70710678 for X & Y for Start & End Tangent.

I see some trimming at splines is off after Tangent Reset.
At 1084.6;84.7 that can't be related to the tangent value.
There is a discontinuity in the shape too at that place.

Also keep in mind that once you trim a fitpoint spline ...
... you end up with a controlpoint spline.
CVH