The standard calibration and drift correction target is a filled circle (for peripheral detectability) with a central "hole" target (for accurate fixation). The sizes of these features may be set with set_target_size(diameter, holesize). If holesize is 0, no central feature will be drawn. The disk is drawn in the calibration foreground color, and the hole is drawn in the calibration background color.
I at least want the center hole to be smaller, but may make the main circle smaller too.
The standard calibration and drift correction target is a filled circle (for peripheral detectability) with a central "hole" target (for accurate fixation). The sizes of these features may be set with
set_target_size(diameter, holesize)
. Ifholesize
is 0, no central feature will be drawn. The disk is drawn in the calibration foreground color, and the hole is drawn in the calibration background color.I at least want the center hole to be smaller, but may make the main circle smaller too.
holesize
.diameter
as needed