One or more circles or ellipses. Options for border and solid or transparent fill also allow circular/elliptical frames (rings).
In the unusual case that you draw multiple shapes in the same circle element and they overlap and have transparency, (properties color, borderColor below), you need to set backColor = <cds>"opaque"<cds> for accurate display.
If an element can end on its own, you don't need to set end conditions for it in property end (unless you want it to maybe end earlier).
No—runs until a condition you set in property end.
You can vary or allow the subject to adjust the following input properties of an object of this type in real time when it's running. If you need to make other properties adjustable, you can edit the element type code—see Element Type Programming Manual.
Default: a circle with diameter 5 deg
A number that is diameter for a circle, or a vector [width height] for an ellipse (deg). Or you can use multiple rows for different sizes for different shapes—see positions below.
A 1×3 RGB vector with numbers between 0–1 setting fill color. You can also use a 1×4 RGBA vector to give the fill transparency, and set A = 0 for no fill. Or an n×3/4 matrix for different colors/transparencies for different shapes—see positions below.
Default: borderWidth = no border
Default: borderColor = white
borderColor is a 1×3 RGB vector with numbers between 0–1 setting border color. You can also use a 1×4 RGBA vector to give the border transparency. Or an n×3/4 matrix for different border colors/transparencies for different shapes.
Default: show one shape centered at element position
If you show multiple shapes then for each of the other properties above you can set one value for all of them, or you can set different values for different shapes using a vector or matrix (see property).
<cd><cd> = show one shape centered at element position.
PsychBench uses record properties to record information during experiments. You can't set record properties but you can see them in experiment results by listing them input property report.