reverseLine

REVERSELINE Return same line but with opposite orientation.

   INVLINE = reverseLine(LINE);
   Returns the opposite line of LINE.
   LINE has the format [x0 y0 dx dy], then INVLINE will have following
   parameters: [x0 y0 -dx -dy].

   See also:
   lines2d, createLine

   ---------
   author : David Legland
   INRA - TPV URPOI - BIA IMASTE
   created the 20/01/2004.

0001 function line = reverseLine(line)
0002 %REVERSELINE Return same line but with opposite orientation.
0003 %
0004 %   INVLINE = reverseLine(LINE);
0005 %   Returns the opposite line of LINE.
0006 %   LINE has the format [x0 y0 dx dy], then INVLINE will have following
0007 %   parameters: [x0 y0 -dx -dy].
0008 %
0009 %   See also:
0010 %   lines2d, createLine
0011 %
0012 %   ---------
0013 %   author : David Legland
0014 %   INRA - TPV URPOI - BIA IMASTE
0015 %   created the 20/01/2004.
0016 %
0017 
0018 %   HISTORY
0019 %   30/06/2009 rename as reverseLine
0020 %   15/03/2011 simplify code
0021 
0022 line(:, 3:4) = -line(:, 3:4);
0023 
0024