Video and audio: playing media in the browser - HTML5 in Action - page 369

Listing 8.20. index.html—Capturing the mouse movement
Note
To keep the draw() function simple, in this section we've removed the code and buttons
for Grayed and Framed . Leaving them in your code won't harm anything, but bear this
in mind as you follow the instructions to replace and include code in this section.
Step 2: Display the captured path over the video
The next step is to display the path within the draw() function. The following listing has
yet another new draw() function.