"""""""""""This would be particularly useful for drawing airfoil sections, which are (historically) defined by two lines intersecting given coordinates and a leading edge radius.""""""""""""""

Do you know that Michael added a "Conic curve" command? he also added an RHO value input to it.... FYI.

Hi Hamish, yup like Burr says try the Conic command for a traditional airfoil curve.

It's available under Draw curve > More > Conic, and it lets you draw 3 points to make a shoulder bracket of 2 intersecting lines, and then either pick a point for the curve to go through or enter a "rho" value.

Some more information here:
http://moi3d.com/2.0/docs/moi_command_reference2.htm#conic

- Michael

Hi adam,

> I wish we could license his library...

Yup, I wish so too, it's pretty cool!

I've tried to contact the author about commercial licensing, and unfortunately it appears that he does not have enough time and/or interest right now to do that.

In the future I want to experiment with some ideas on interpolation with a minimization in curvature changes that may give a kind of similar effect.

- Michael