Mouse coordinates doubled(?) when using deg units

Builder
5

Hi,

here are some more detailed information about this issue on MacBooks (running MacOS 10.13.2, High Sierra; PsychoPy Standalone 3.2.4).

  1. Attaching an external monitor solves the issue: The coordinates then are correct (2.5, 3, etc.) and the mouse control works as well.

  2. When using the internal display of the MacBook, it’s getting messy. Setting the screen resolution to what is mentioned in the MacOS monitor settings (i.e. 1440 x 900 pixels; this is what the display is supposed to look like) results in the errors described below. In this case, the display is correct (extensions measured and calculated by hand), but the mouse coordinates are doubled.

  3. When using the actual resolution of the display (as captured by mywin.size; i.e. 2880 x 1800), the display is twice as large as intended (extensions measured and calculated by hand), but the mouse coordinates remain doubled.

So in a nutshell:
a) mouse coordinates are constantly wrong by the factor 2
b) the display is only correct when using the your-display-looks-like-values on the MacOS monitor settings.

Any hint for a solution would be highly welcome.

Best,
Hauke

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