rectangle

 elements

One or more rectangles or squares. Options for border and solid or transparent fill also allow rectangular frames.

See also element type backColor.

(Transparency artifacts)

In the unusual case that you draw multiple rectangles in the same element and they overlap and have transparency, (properties color, borderColor below), you need to set backColor = <cds>"opaque"<cds> for accurate display.

▸ Object ends on its own?

"Ends on its own" means ends automatically at that point. 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 any condition you set in property end.

Input properties

Adjustable properties

You can vary or allow the subject to adjust the following properties of an object of this type when it's running. If you need to make other properties adjustable, you can edit the element type code—see Element Type Programming Manual.

Adjustable properties

Adjustable properties

position
nn_eyes
rotation
colorMask
alpha
intensity
contrastMult
drawCodeVars

(None)

(None)

size

Default: a square with sides 5 deg

A number that is side length for a square, or a vector [width height] for a rectangle (deg). Or you can use multiple rows for different sizes for different rectangles—see positions below.

color

Default: white

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 rectangles—see positions below.

borderWidth
borderColor

Default: borderWidth = no border
Default: borderColor = white

borderWidth is a number (deg). Or a vector for different border widths for different rectangles—see positions below. 0 = no border.

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 rectangles.

positions

Default: show one rectangle centered at element position

If you want to show multiple rectangles at the same time, you can set that here. This is more efficient than using multiple rectangle elements. positions is a 2-column matrix setting centers for the rectangles, with rows corresponding to rectangles and columns to [x y] coordinates (deg). Positions are relative to element position, which you can set in position (default relative to screen center). Rectangles are also layered front to back in the order you list them.

If you show multiple rectangles 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 rectangles using a vector or matrix (see property).

<cd>[]<cd> = show one rectangle centered at element position.

Input properties all visual elements have

position

Input properties all adjuster elements have

adjust

Input properties all objects have

report
info

Record properties

PsychBench uses record properties to record information during experiments. You can't set record properties but you can see them in experiment results using input property report.