figure generator

[mwforum@xxxxxxxxxxxxxxxxxx (Daniel Ajoy)]

On 2 Jan 2003 at 13:46, Jeff Knope wrote:

> Hi Daniel-
> 
> I got your message, with attachments.  These appear to be figures composed
> of arc segments.
> 
> As I said, I'm still working on this function.  In my situation, where the
> arc is to be integrated into a polyline, the start point is given (the end
> of last segment drawn).  How I have it working now, the user identifies
> (with a mousclick) the other endpoint of the arc (REPORT tells him/her the x
> and y offset from the beginning point).  This creates an imaginary line (the
> perpendicular bisect) that is the loci of all possible centers for an arc
> passing through those two points.  A turtle ("cross) travels along this line
> in response to mouse movement.  When the user finds the desired center, a
> click completes the input, and an "arc" (10 segments) is drawn.  The data
> representation in the polyline list is a 3-element list.
> 

I understand.

Yes my arcs application was an experiment. You define a sequence of points
and then a sequence of arcs is drawn through them, so that the end of
each arc fits in curvature with the beginning of the next arc. Only the 
curvature of the first arc can is configurable.

I thought you were talking about joining a sequence of points with a curve.
My "experiment" does that with arcs, another way to do it is using splines.
But I have never tried to do that, I bet I would be a nice Logo project...

Daniel