🚀 go-pugleaf

On Sat, 22 Aug 1998 10:01:26 +0200, Remco de Korte
<remcodek@xs4all.nl> wrote:


>My problem is this: 
>
>I have two points which can move more or less free on a plane. I want a
>line (curve) connecting these points to have a constant length (that
>should restrict the movement). How can I find this line? I'd like to
>find some way to describe the curve, with some sine/cosine-functions so
>that I can use it in a programme I'm writing.

It would appear that you are looking for the following?:

Let one point be in any arbitrary position, (h,k) coordinates.  Then
the other point can be arbitrarily anywhere on the circle about (h,k)
which is described by (x-h)^2 + (y-k)^2 = r^2, where "r" is the length
of the rod.  The "line" you seem to refer to is the radius of this
circle? ...or am I missing something?

Since this is arbitrary, there is no real "curve" describing the
position.  Any motion would depend upon the initial conditions.