expyfun.visual.Circle#

class expyfun.visual.Circle(ec, radius=1, pos=(0, 0), units='norm', n_edges=200, fill_color='white', line_color=None, line_width=1.0)[source]#

A circle or ellipse.

Parameters:

ecinstance of ExperimentController: Parent EC.
radiusfloat | array-like: Radius of the circle. Can be array-like with two elements to make an ellipse.
posarray-like: 2-element array-like with X, Y center positions.
unitsstr: Units to use. These will apply to all spatial aspects of the drawing. shape e.g. size, position. See check_units for options.
n_edgesint: Number of edges to use (must be >= 4) to approximate a circle.
fill_colormatplotlib Color | None: Color to fill with. None is transparent.
line_colormatplotlib Color | None: Color of the border line. None is transparent.
line_widthfloat: Line width in pixels.

Methods

`draw`()	Draw the object to the display buffer.
`set_fill_color`(fill_color)	Set the object color
`set_line_color`(line_color)	Set the object color
`set_line_width`(line_width)	Set the line width in pixels
`set_pos`(pos[, units])	Set the position and radius of the circle
`set_radius`(radius[, units])	Set the position and radius of the circle

Returns:

circleinstance of Circle: The circle object.

draw()[source]#: Draw the object to the display buffer.

set_fill_color(fill_color)[source]#

Set the object color

Parameters:

fill_colormatplotlib Color | None: The fill color. Use None for no fill.

set_line_color(line_color)[source]#

Set the object color

Parameters:

line_colormatplotlib Color | None: The fill color. Use None for no fill.

set_line_width(line_width)[source]#

Set the line width in pixels

Parameters:

line_widthfloat: The line width. Must be given in pixels. Due to OpenGL limitations, it must be 0.0 <= line_width <= 10.0.

set_pos(pos, units='norm')[source]#

Set the position and radius of the circle

Parameters:

posarray-like: X, Y center of the circle.
unitsstr: Units to use. See check_units for options.

set_radius(radius, units='norm')[source]#

Set the position and radius of the circle

Parameters:

radiusarray-like | float: X- and Y-direction extents (radii) of the circle / ellipse. A single value (float) will be replicated for both directions.
unitsstr: Units to use. See check_units for options.

Examples using `expyfun.visual.Circle`#

Experiment drawing methods

Experiment with eye-tracking

Use joystick controls

Mouse click demo

A-V sync test

expyfun.visual.Circle#

Examples using expyfun.visual.Circle#

Examples using `expyfun.visual.Circle`#