new module:view/vizEntities/SquareGraphic(parent, w, h, screen)
    Square is a graphic.
It displays itself on a parent object.
Its parent object stores its x and y.
It shows a square at the parent object xy coordinates.
It animates the square when picking up and dropping.
    Parameters:
| Name | Type | Description | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
parent | 
            
            Object | 
                Properties
  | 
        |||||||||
w | 
            
            Number | width of square to draw. | |||||||||
h | 
            
            Number | height of square to draw. | |||||||||
screen | 
            
            Screen | 
- Source: