HTML and CSS Reference
In-Depth Information
Step 5: Add Vlad Vukićević's WebGL helpers for rotation.
The code in
listing 9.17
comes from Mozilla's site at
http://mng.bz/BU9f
. Mozilla tells us
that “these routines were borrowed from a sample previously written by Vlad Vukićević,”
whose blog you can find at
http://blog.vlad1.com
. Vlad has created a couple of tools to help
with rotation and with pushing and popping data. Append his rotation logic to
gd.core
with the following code.
