Re: Arc fitting routines was Fred at IMServ rede ths plz

--- In CAD_CAM_EDM_DRO@y..., batwings@i... wrote:

> Fred:
>
> I have some code that solves arc from three points, I use it

to 'teach'

> arcs into job file during MDI.

Hi Hoyt, this is the algorithm that I call stepwise arc fitting. I
am actually looking for a higher order mathmatical evaluation of a
series of points along a cubic spline and the ability to precisely
control smoothing and fit tolerances for the arc approximation of the
spline.

I have some VB code myself that I wrote several years back that
collects mouse cursor points on a screen for video measurement of
tool nose radius. I'm hoping that someone has seen a more
sophisticated method than the brute force and hence long processing
time that is required for evaluation of splines with 40000-50000
nodes.

Thanks for the offer to help.

Best Regards,

Fred Smith
IMService