File: RectWidth.m

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psychtoolbox-3 3.0.14.20170103%2Bgit6-g605ff5c.dfsg1-1
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function width = RectWidth(rect)
% width = RectWidth(rect)
%
% Returns the rect's width.
% Also see PsychRects.

% 5/12/96 dgp wrote it.
% 7/10/96 dgp PsychRects

if nargin~=1
	error('Usage:  width = RectWidth(rect)');
end
if size(rect,2)~=4
	error('Wrong size rect argument. Usage:  width = RectWidth(rect)');
end
width = rect(RectRight) - rect(RectLeft);