Ken,
It is all in the name, isn't it?
A fitpoint spline is a third degree spline that goes trough all the indicated fitpoints.
Fitting the spline to an ordered set of points.
When created as open ended both spline types end 'normal' (relaxed, tangent) in the endpoints.
May I already remark that:
- If you trim or divide a fitpoint spline in a later stage then the spline(s) is (are) replaced by (a) control point spline(s).
-> This is to keep tangency at the trim or cut point other than normal.
-> You can not revert back to fitpoints.
- At high zoom it may only look like that a spline does not match with intersection points or for example endpoints of lines trimmed to the spline.
-> Due to how curved line-art is rendered, mathematically the intersection point or the trimmed end is correct.
Although control point splines are not really Bézier curves here you can see how they relate to their control points:
https://en.wikipedia.org/wiki/B%C3%A9zi ... tic_curves
A control point spline goes thus rarely trough a control point except the endpoints if open.
Regerds,
CVH
