/usr/share/psychtoolbox-3/PsychGLImageProcessing/private/DrawRectFrame.m is in psychtoolbox-3-common 3.0.11.20131230.dfsg1-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | function DrawRectFrame(windowPtr, rect, color)
% DrawRectFrame(windowPtr, rect, [color])
%
% Draw a rectangle frame (not filled in) specified by the rect coords.
% windowPtr is the window pointer returned from Screen (PsychToolbox)
%
% rect is a 1x4 vector - [x0 y0 x1 y1]
%
% color is a 1x3 color vector - [r g b] with color range from 0:255
% if color is not specified, rect is drawn in white
%
% The idea for this came from the Screen('FrameRect') function. However,
% Screen would only draw from top-left to bottom-right. This didn't work
% well on the Haploscope when your view is mirrored.
% Draw our own using the Screen('DrawLine') functions.
%
% REQUIRES: PsychToolbox version 3.x
%
% Updated: 2007-05-14 - Updated for Psychtoolbox 3.x, using OpenGL.
% Created: Feb 2006 - cburns - Bankslab, UC Berkeley
if (nargin < 2)
disp('DrawRectFrame requires at least 2 arguments');
disp('Usage: DrawRectFrame(windowPtr, rect, [color])');
return;
end
% Check for color arg
if (nargin == 2)
color = [255 255 255];
end
% Grab coords
x0 = rect(1);
y0 = rect(2);
x1 = rect(3);
y1 = rect(4);
% Draw lines
Screen('DrawLine', windowPtr, color, x0, y0, x0, y1);
Screen('DrawLine', windowPtr, color, x0, y1, x1, y1);
Screen('DrawLine', windowPtr, color, x1, y1, x1, y0);
Screen('DrawLine', windowPtr, color, x1, y0, x0, y0);
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