$|$lask $3-$Develop an application tor target selection with the Bubble Cursor

Task $3$ continues with Task $2.$ In Task $3,$ you need to implement anapplication with Python

in which the bubble cursor can work.The blue object is the start button. The red object is

the target. The green objects are distractors. Note that the dotted lines, the letters and the

arrow lines are not shown on the interface.

Fig. $4$: illustration of the interface of the bubble cursor.

The requirements are as follows:

$1.$ The size of the start button, target and distractor$($W$)$ is set as $40$ pixels in diameter $($radius $=20).$ They are circular objects with the same size $($Fig$.4).$

$2.$ Target distance $($D$)$ is the distance between thecentre of the start button to the target.Target Distance $($D$)$ is set as $512$ pixels.

$3.$ The start button is always placed at the bottom$-$left corner of the window. There is no requirement of target position but make sure that D is $512$ pixels.

$4.$ There are $20$ distractors, $1$ target and $1$ start button on the interface. Distractors are presented randomly in the window. Distractors, the target and the start buttonshould not overlap.

$5.$ Just implement the interface with the required objects $($i$.$e$.,$ a start button, a target, and distractors$).$ All objectsare selectable by the bubble cursor, but no furtherinteractionsare needed when they are selected.As the area cursor in Lab $2,$ a selectable object turns yellow when it is within the activation area of the bubble cursor $($Fig$.4).$

Hints: you need to generate the start button, target and distractors in objects$\_$management.py

The start button can be a blue object. The target can be a red object. All distractors are green objects. When generating these objects, make sure their size is $40$ pixels in diameter $($radius $=20)$and the distance between the target and the start button is $512$ pixels.