widgets

The widgets demo draws all widget types, and for the three adjustable widgets -- the dial, slider and toggle -- uses tracking controls to manage their touches.

You can switch between the 2D and the 3D widget look using the bottoms on the top-right:

The widgets that are purely for display are dark blue. The touch-sensitive elements are light blue. All the widgets are connected together: they are all controlling and displaying a single variable in the code.