reversePolygon

REVERSEPOLYGON Reverse a polygon, by iterating vertices from the end.

   POLY2 = reversePolygon(POLY)
   POLY2 has same vertices as POLY, but in different order. The first
   vertex of the polygon is still the same.

   Example
   reversePolygon

   See also
   polygons2d, reversePolyline

 ------
 Author: David Legland
 e-mail: david.legland@grignon.inra.fr
 Created: 2009-06-30,    using Matlab 7.7.0.471 (R2008b)
 Copyright 2009 INRA - Cepia Software Platform.

0001 function rev = reversePolygon(poly)
0002 %REVERSEPOLYGON Reverse a polygon, by iterating vertices from the end.
0003 %
0004 %   POLY2 = reversePolygon(POLY)
0005 %   POLY2 has same vertices as POLY, but in different order. The first
0006 %   vertex of the polygon is still the same.
0007 %
0008 %   Example
0009 %   reversePolygon
0010 %
0011 %   See also
0012 %   polygons2d, reversePolyline
0013 %
0014 % ------
0015 % Author: David Legland
0016 % e-mail: david.legland@grignon.inra.fr
0017 % Created: 2009-06-30,    using Matlab 7.7.0.471 (R2008b)
0018 % Copyright 2009 INRA - Cepia Software Platform.
0019 
0020 rev = poly([1 end:-1:2], :);