reverseEdge

REVERSEEDGE Intervert the source and target vertices of edge.

   REV = reverseEdge(EDGE);
   Returns the opposite edge of EDGE.
   EDGE has the format [X1 Y1 X2 Y2]. The resulting edge REV has value
   [X2 Y2 X1 Y1];

   See also:
   edges2d, createEdge, reverseLine

 ------
 Author: David Legland
 e-mail: david.legland@grignon.inra.fr
 Created: 2010-05-13,    using Matlab 7.9.0.529 (R2009b)
 Copyright 2010 INRA - Cepia Software Platform.

0001 function res = reverseEdge(edge)
0002 %REVERSEEDGE Intervert the source and target vertices of edge.
0003 %
0004 %   REV = reverseEdge(EDGE);
0005 %   Returns the opposite edge of EDGE.
0006 %   EDGE has the format [X1 Y1 X2 Y2]. The resulting edge REV has value
0007 %   [X2 Y2 X1 Y1];
0008 %
0009 %   See also:
0010 %   edges2d, createEdge, reverseLine
0011 %
0012 % ------
0013 % Author: David Legland
0014 % e-mail: david.legland@grignon.inra.fr
0015 % Created: 2010-05-13,    using Matlab 7.9.0.529 (R2009b)
0016 % Copyright 2010 INRA - Cepia Software Platform.
0017 
0018 res = [edge(:,3:4) edge(:,1:2)];