Hi,
This week for my project is about user-usability. Thinking about how to make user uses the library easily... It is hard to think API for creating render object because there are many things that need to be covered (color, transformation, what shape n soon).
The creating object API is kind a bit hacky n hand waving (only createBox with a lot of assumption), it needs to be expanded for more flexibility. I also want to show small demonstration for what I have been doing so far, demonstrating with showing API is the best way to do, unfortunately, no API documentation at the moment... So what I can show to you at the moment is test page with sort of covering 60% API that I want to bring to user... Please go to the test page to see the demonstration. Note that, it is necessary to have Firefox 3.0 Beta 1 installed with proper Canvas3D extension (see the link in the page). Please give comment or suggestion... Thanks n have fun!

API design is tricky
It's worth reading up a bit on API design so you have some strategies for how to get it right (eg. building different "clients" of your API with different goals). Here are a few articles that might get you started:
Usability is one of the
Usability is one of the leading factors when making a website. Strictly speaking usability is a necessary condition for survival. If a web site is difficult to use, people leave. So I think it is very important to "buy" a website in that way that people who are not familiar with the internet can also use it and find the things they search.