POINTONLINE Create a point on a line at a given position on the line.

   P = pointOnLine(LINE, POS);
   Creates the point belonging to the line LINE, and located at the
   distance D from the line origin.
   LINE has the form [x0 y0 dx dy].
   LINE and D should have the same number N of rows. The result will have
   N rows ans 2 column (x and y positions).

   See also:
   lines2d, points2d, onLine, onLine, linePosition

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   author : David Legland 
   INRA - TPV URPOI - BIA IMASTE
   created the 07/04/2004.

Package: matgeom