1 %% Copyright (c) 2011, INRA
2 %% 2006-2011, David Legland <david.legland@grignon.inra.fr>
3 %% 2011 Adapted to Octave by Juan Pablo Carbajal <carbajal@ifi.uzh.ch>
5 %% All rights reserved.
6 %% (simplified BSD License)
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35 %% @deftypefn {Function File} {@var{p} = } circleArcAsCurve (@var{arc}, @var{N})
36 %% Convert a circle arc into a series of points
38 %% P = circleArcAsCurve(ARC, N);
39 %% convert the circle ARC into a series of N points.
40 %% ARC is given in the format: [XC YC R THETA1 DTHETA]
41 %% where XC and YC define the center of the circle, R its radius, THETA1
42 %% is the start of the arc and DTHETA is the angle extent of the arc. Both
43 %% angles are given in degrees.
44 %% N is the number of vertices of the resulting polyline, default is 65.
46 %% The result is a N-by-2 array containing coordinates of the N points.
48 %% [X Y] = circleArcAsCurve(ARC, N);
49 %% Return the result in two separate arrays with N lines and 1 column.
52 %% @seealso{circles2d, circleAsPolygon, drawCircle, drawPolygon}
55 function varargout = circleArcAsCurve(arc, N)
64 t1 = t0 + deg2rad(arc(5));
65 t = linspace(t0, t1, N)';
67 % compute coordinates of vertices
68 x = arc(1) + arc(3) * cos(t);
69 y = arc(2) + arc(3) * sin(t);