.TH FFMATCH
 6 "IRIT Version 6.0" 
.SH NAME
FFMATCH



 FFMATCH( CurveType Crv1, CurveType Crv2, NumericType Reduce,
          NumericType Samples, NumericType ReparamOrder,
          NumericType Rotate, NumericType NormType )

Computes a reparametrization to Crv2 so it fits Crv1, the best
under some prescribed norm, NormType. Currently the following norms
are valid for NormType

    Value      Description
    1          Suitable for ruled and blended curves, for modeling.
               See RULEDSRF.
    2          Suitable for metamorphosis of curves. See CMORPH.
    3          Distance norm in "walking the dog" notion.
    4          Bisector (skeleton) matching norm for two curves.

Whenever negative norms can result (for example, in cases were self
intersection cannot be prevented in ruled surface constructions), one can
allow negativity with no extra penalty by applaying neative NormType.
Use of positive only norms would yield no output at all if no matching
with positive weights can be established whereas allowing negative
norm values would result in the globally optimal result, but with possibly
self intersectiions.

The reparametrization is computed by sampling a fix set of size Samples
off both curves, and fitting a Bspline curve of length Reduce as the
reparametrization curve. Hence, Reduce must be less than or equal to
Samples. The reparametrization curve will have order of
ReparamOrder. If Rotate is TRUE or ON, then attempt is made
to rotate the reparametrization of the curves. Rotation can be used on
closed curves only.

See RULEDSRF and CMORPH for examples.