Export true curves?

function

If skp recognizes circles, arcs, and such in entity info....and data to edit curves is also retained when using fredo's bezier.. could it be possible for a ruby to scrape this data and export true 2d data, preserving control points? Closest I have is 3d dwg export of arc and circle....
if this is impossible can someone rec a 2d cad that is close skp's level of intuitive drafting? I enjoy 2d drafting in skp a great deal , but lack of splines is making production difficult

dukejazz

Ten steps to get your data points of a true spline curve

Download Bezierspline
by Fredo6
Complete set of polylines and splines curves commands: create, modify, convert. Cubic Bezier spline curve2, Uniform B-Spline, Polylines, modification of precision, add/delete control points, support of loop closing, conversion of any curve to spline curves, language translation support (French, German, English, Hungarian, Portugese). Doc included.
Download Silhouette to Plan.
by TIG
Flattens (projects) the selected geometry onto the selected workplane. edges are inspected and only those that are needed to form a fully faced 'silhouette' WITHOUT cut-outs are retained.
Use tip 1 runing more than one sketchup.
http://forums.sketchucation.com/viewtopic.php?f=79&t=40254
Run 2 copy of sketchup - two click of the shortcut.
Make your shapes or objects with Bezierspline and Silhouette (per #1 sketchup).
Select curve (per #1 sketchup).
Paste in place to empty page GUI (per #2 sketchup).
Sketchup
a) Export file.dae (per #2 sketchup).
b) Meshlab.exe convert dae to wrl.
or
SketchupPro
Export file.wrl (per #2 sketchup).
Open file.wrl - Notepad.
Read your data points.