Update on the simplistic 3D renderer for Canvas 2D: TinyDim
You control the demo mainly by left/right dragging the mouse, but some basic, unoptimized support for keyboard navigation is in there as well (Arrow Key/PgUp/PgDn). If you click on a face it will light up briefly and you can now enter a new color in the fields below the canvas.
A guy named Luke recently posted a comment on a three year old post that I honestly had mostly forgotten about: “Canvas 3D Renderer updated“. It was about one of the first Javascript programs capable of rendering a file exported from a 3D program without a plugin.
There are by now several such engines using Canvas 2D, a good deal of them more advanced, faster and better supported. However: TinyDim, which was the name I used when I compiled that sample into a sort of generic Javascript library has its advantages in being small, simple, easy to understand and therefore easy to hack and extend.
So this is a sort of update what has happened since then: I’ve actually used TinyDim sometimes and it has received some level of basic optimization at the code level (it’s still missing any structural optimizations like caching or viz-areas), but I never got around to post about it. It now has support for one global light and has its own mouse navigation class for when you just want to view a static 3D model. Support for colored faces is still only hacked in with a proprietary format (although that would be easy to change, you just have to write a MAT file parser) and It can return the face you’ve clicked on.
So, if you want to hack in texture support using this technique or anything else, be my guest 
Hey Mate can you tell me what other canvas engines are using Canvas 2d?
I am interested to learn about the techniques being used to render 3d images he best way possible but I am having a hard time getting the basics. Are there any video tutrials you could point me to?