Code covered by the BSD License

# geom2d

### David Legland (view profile)

13 Jun 2005 (Updated )

Geometry library for matlab. Performs geometric computations on points, lines, circles, polygons...

drawShape(type, param, varargin)
```function varargout = drawShape(type, param, varargin)
%DRAWSHAPE Draw various types of shapes (circles, polygons...)
%
%   drawShape(TYPE, PARAM)
%   Draw the shape of type TYPE, specified by given parameter PARAM. TYPE
%   can be one of {'circle', 'ellipse', 'rect', 'polygon', 'curve'}
%   PARAM depend on the type. For example, if TYPE is 'circle', PARAM will
%   contain [x0 y0 R].
%
%   Examples :
%   drawShape('circle', [20 10 30]);
%   Draw circle centered on [20 10] with radius 10.
%   drawShape('rect', [20 20 40 10 pi/3]);
%   Draw rectangle centered on [20 20] with length 40 and width 10, and
%   oriented pi/3 wrt axis Ox.
%
%
%   drawShape(..., OPTION)
%   also specifies drawing options. OPTION can be 'draw' (default) or
%   'fill'.
%
%   ---------
%
%   author : David Legland
%   INRA - TPV URPOI - BIA IMASTE
%   created the 07/04/2005.
%

%   HISTORY

if ~iscell(type)
type = {type};
end
if ~iscell(param)
tmp = cell(1, size(param, 1));
for i=1:size(param, 1)
tmp{i} = param(i,:);
end
param = tmp;
end

% compute drawing options
option = 'draw';
if ~isempty(varargin)
var = varargin{1};
if strcmpi(var, 'fill')
option = 'fill';
end
end

% transform each shape into a polygon
shape = cell(1,length(type));
for i = 1:length(type)
if strcmpi(type{i}, 'circle')
shape{i} = circleAsPolygon(param{i}, 128);
elseif strcmpi(type{i}, 'rect')
shape{i} = rectAsPolygon(param{i});
elseif strcmpi(type{i}, 'polygon')
shape{i} = param{i};
end
end

% draw or fill each shape as polygon
hold on;
h = zeros(length(shape), 1);
if strcmp(option, 'draw')
for i = 1:length(shape)
h(i) = drawPolygon(shape{i});
end
else
for i = 1:length(shape)
h(i) = fillPolygon(shape{i});
end
end

% foramt output
if nargout > 0
varargout = {h};
end
```

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