Hi, and welcome to the second part of ‘Building an engine’. In the first part we learned something about the languages we’re going to use and got to download the 3d engine as it stands now. Also, the engine was built and maybe even deployed to your iPhone. In this part we’re going to look at the scene graph that makes up the 3d world and explain how the square in the example is rendered.

Announcement: I have started building an OpenGL ES based 3d engine for the iPhone. Since this is the first time I’m building something like this, I decided to blog on the site about its progress and the challenges I face.