Support for Step-to-Step Animation

```
More of a support functionality request.

I was wondering if there would be any support to take an .obj model and do
Step-to-Step animation.

Example:
Object: Box with lid, apple inside
Animation:
Button Action 1: Remove lid Animation
Button Action 2: Remove Apple from Box (x,y,z control)

I see in the example there is the ability to run an animation:
http://jsc3d.googlecode.com/svn/trunk/jsc3d/demos/md2viewer.html

Any chance there is a way to run an animation once -
```

Original issue reported on code.google.com by `shanedav...@gmail.com` on 8 Mar 2014 at 7:13

The issue names the md2viewer.html demo as a starting point, but no implementation file or test is identified. Read that demo first to understand the existing animation behavior, then trace the model-loading and animation entry points. Done would require an agreed API and implementation for sequential button-triggered .obj steps, including completion behavior.

Written by the indexing model from the issue text.