circles2d

CIRCLES2D Description of functions operating on circles.

   Circles are represented by their center and their radius:
   C = [xc yc r];
   One sometimes considers orientation of circle, by adding an extra
   boolean value in 4-th position, with value TRUE for direct (i.e.
   turning Counter-clockwise) circles.

   Circle arcs are represented by their center, their radius, the starting
   angle and the angle extent, both in degrees:
   CA = [xc yc r theta0 dtheta];
   
   Ellipses are represented by their center, their 2 semi-axis length, and
   their angle (in degrees) with Ox direction.
   E = [xc yc A B theta];

   See also
   ellipses2d, createCircle, createDirectedCircle,
   isPointInCircle, isPointOnCircle, enclosingCircle, circumCircle
   intersectLineCircle, intersectCircles, radicalAxis
   circleToPolygon, circleArcToPolyline
   drawCircle, drawCircleArc

0001 function circles2d(varargin)
0002 %CIRCLES2D Description of functions operating on circles.
0003 %
0004 %   Circles are represented by their center and their radius:
0005 %   C = [xc yc r];
0006 %   One sometimes considers orientation of circle, by adding an extra
0007 %   boolean value in 4-th position, with value TRUE for direct (i.e.
0008 %   turning Counter-clockwise) circles.
0009 %
0010 %   Circle arcs are represented by their center, their radius, the starting
0011 %   angle and the angle extent, both in degrees:
0012 %   CA = [xc yc r theta0 dtheta];
0013 %
0014 %   Ellipses are represented by their center, their 2 semi-axis length, and
0015 %   their angle (in degrees) with Ox direction.
0016 %   E = [xc yc A B theta];
0017 %
0018 %   See also
0019 %   ellipses2d, createCircle, createDirectedCircle,
0020 %   isPointInCircle, isPointOnCircle, enclosingCircle, circumCircle
0021 %   intersectLineCircle, intersectCircles, radicalAxis
0022 %   circleToPolygon, circleArcToPolyline
0023 %   drawCircle, drawCircleArc
0024 %
0025 
0026 % ------
0027 % Author: David Legland
0028 % E-mail: david.legland@inrae.fr
0029 % Created: 2008-10-13, using Matlab 7.4.0.287 (R2007a)
0030 % Copyright 2008-2024 INRA - Cepia Software Platform
0031 
0032 help('circles2d');