A couple of employees from Google created a library called dat.GUI (you can find the documentation online at http://code.google.com/p/dat-gui/), which allows you to very easily create a simple user interface component that can change variables in your code. In the last part of this chapter, we'll use dat.GUI to add a user interface to our example that allows us to do the following:
- Control the speed of the bouncing ball
- Control the rotation of the cube
Just like we had to do for the statistics, we first add this library to the <head> element of our HTML page, as follows:
<script type="text/javascript" src="../../libs/util/dat.gui.js"></script>
The next thing we need to configure is a JavaScript ...
