PARAMETRIZE Parametrization of a polyline, based on edges lengths.

   PAR = parametrize(POLY);
   Returns a parametrization of the curve defined by the serie of points,
   based on euclidean distance between two consecutive points. 
   POLY is a N-by-2 array, representing coordinates of vertices. The
   result PAR is N-by-1, and contains the cumulative length of edges until
   corresponding vertex.

   PAR = parametrize(PX, PY);
   is the same, but specify points coordinates in separate column vectors.

   PAR = parametrize(..., 'normalize', 1);
   PAR = parametrize(..., 'normalize', true);
   Rescales the result such that the last element of PAR is 1.
 
   Example
     % Parametrize a circle approximation
     poly = circleToPolygon([0 0 1], 200);
     p = parametrize(poly);
     p(end)
     ans = 
         6.2829

   See also:
   polygons2d, polylineLength

   ---------
   author : David Legland 
   INRA - TPV URPOI - BIA IMASTE
   created the 06/04/2003.

Package: matgeom