In this video i will show you how the 3D circle graph demo which uses ellipse styles to create a pie Chart.

In this project the sectors of the Pie chart are related to the time each of the 4 colour coordinated buttons are pressed and held for.

On release of the button the total time is calculated and the percentages are adjusted and the graph is redrawn.

The project ensures there is always a graph drawn.

This project as well as many others can be found at the itrontft website under projects