Code covered by the BSD License

Highlights fromgeom2d

from geom2d by David Legland
Geometry library for matlab. Performs geometric computations on points, lines, circles, polygons...

circleToPolygon(circle, varargin)
```function varargout = circleToPolygon(circle, varargin)
%CIRCLETOPOLYGON Convert a circle into a series of points
%
%   P = circleToPolygon(CIRCLE, N);
%   convert circle given as [x0 y0 r], where x0 and y0 are coordinate of
%   center, and r is the radius, into an array of  [(N+1)x2] double,
%   containing x and y values of points.
%   The polygon is closed
%
%   P = circleToPolygon(CIRCLE);
%   uses a default value of N=64 points
%
%   Example
%   circle = circleToPolygon([10 0 5], 16);
%   figure;
%   drawPolygon(circle);
%
%   circles2d, polygons2d, circleArcToPolyline, ellipseToPolygon
%
%
% ---------
% author : David Legland
% created the 06/04/2005.
% Copyright 2010 INRA - Cepia Software Platform.
%

% HISTORY
% 2007-04-20 return a closed polygon with N+1 vertices, use default N=64
% 2011-12-09 rename to 'circleToPolygon'

% determines number of points
N = 64;
if ~isempty(varargin)
N = varargin{1};
end

% create circle
t = linspace(0, 2*pi, N+1)';
x = circle(1) + circle(3) * cos(t);
y = circle(2) + circle(3) * sin(t);

if nargout == 1
varargout{1} = [x y];
elseif nargout == 2
varargout{1} = x;
varargout{2} = y;
end
```