#556 repeated scaling can lead to scale factors of 0.0

[pafurijaz]

Hi, I am trying to learn your nurbs program, but when I change a curve by moving the points, they are deleted and cannot be changed anymore.
Operating system lubuntu 16.04 64bit

[Randolf Schultz]

Greetings,

all your curves have a Scale_X attribute of zero, which confuses the point
editing.
Were you trying to ensure planarity this way?
I am asking, because in the current version, zero is a forbidden value for
any scale attribute (even if not detected/enforced properly). However,
if there is a clear use case...

regards,
Randolf

[pafurijaz]

Were you trying to ensure planarity this way? Yes :P
It is true, in fact I scaled the vertices, restricted to an axis, to align the points, but how do I align the vertices?

[Randolf Schultz]

You can use direct point edit on all points with just X set to zero (leave all other
entries empty).
Then simply edit in a Side view.
See also
http://ayam.sourceforge.net/docs/ayam-3.html#ss3.21