grafx - Extensible Java Graphics Package Code

Got something working in Donut. Still debugging.

I realized that we probably need to do normal computations post transformation.
Saving work in case I need to roll something back.

Populating m_vNormals and m_fNormals in Donut.

Adding class VectorUtils for demo purposes.

Making some major progress on Donut. I still need to add lighting. Would like
to add perspective view as well.

Making some progress on Donut.

Fixing the issue with thread lock. I noticed that mouseDrag() and update() are
always called from the same thread.

Adding beginnings of 'Donut' for demo purposes.

Making use of MatrixUtils in PolyhedronDemo. This demo is still freezing
occasionally:
Exception in thread "main" java.lang.RuntimeException: trying to update() in vain
at com.nerius.game.util.CanvasAWTAdapter.requestUpdate(CanvasAWTAdapter.java:187)
at com.nerius.grafx.d3.demo.PolyhedronDemo.run(PolyhedronDemo.java:253)
at com.nerius.grafx.d3.demo.PolyhedronDemo.main(PolyhedronDemo.java:72)

Adding helper class 'MatrixUtils' to package 'com.nerius.grafx.d3.demo'. At
lease two classes in same package (demo code) will likely be making use of
this.