/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/iViewXDrawCalibrationPoint.m is in psychtoolbox-3-common 3.0.11.20140816.dfsg1-1.
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 | function iviewXDrawCalibrationPoint(ivx, point)
% draw calibration point
if ~isempty(ivx.window)
rect=CenterRectOnPoint(ivx.calRect, point(1), point(2));
Screen('FillOval',ivx.window, ivx.calPointColour, rect);
rect=CenterRectOnPoint(ivx.calRectCenter, point(1), point(2));
Screen('FillOval',ivx.window, ivx.calPointColourCenter, rect);
Screen('Flip',ivx.window);
else
fprintf([mfilename ': cannot draw point, no window defined\n']);
end
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