TRANSFORMLINE Transform a line with an affine transform.

   LINE2 = transformLine(LINE1, TRANS);
   returns the line LINE1 transformed with affine transform TRANS. 
   LINE1 has the form [x0 y0 dx dy], and TRANS is a transformation
   matrix.

   Format of TRANS can be one of :
   [a b]   ,   [a b c] , or [a b c]
   [d e]       [d e f]      [d e f]
                            [0 0 1]

   LINE2 = transformLine(LINES, TRANS);
   Also work when LINES is a [N*4] array of double. In this case, LINE2
   has the same size as LINE. 

   See also:
   lines2d, transforms2d, transformPoint

   ---------
   author : David Legland 
   INRA - TPV URPOI - BIA IMASTE
   created the 06/04/2004.

Package: matgeom