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This should make it work with cameras having parents other than scene root.

Added a silly check on Object3D.add(). It's a quick check and it avoids enless recursivity making the browser silently hang.

Not sure about this hardcoded epsilon thing for "isZero", also related strict equality check. Maybe these should be configurable somehow.

Now we can just do console.log(THREE.VERSION). Thanks for the suggestiong @chandlerprall!

This is for seeing how camera actually looks (frustum, line-of-sight, up), it's not a camera. Not sure about the name.

Plus added "onUpdate" callback handling also for cube textures.

Updated Closure compiler. Added more verbose compile warnings. Fixed all compile warnings. Started to fix runtime warnings in examples.

For verbose compile warnings to be practical I had to add externs and disable some warnings manually (there were tons of complains about "global this" and "cannot instantiate non-constructor"). Other solution would be to annotate explicitly constructors all over the code base.

(prompted by John Carmack's praise of static code analysis http://altdevblogaday.com/2011/12/24/static-code-analysis/)

As per Giles recommendation here http://learningwebgl.com/blog/?p=4379

Doing normalization of normals / binormals / tangents in fragment shader instead of vertex shader. This seems to help with artefacts appearing in certain models with OpenGL rendering backend.

Also added modulating environment reflection by specular map.

Implemented again @ekitson's improvement to GeometyUrils.center. Increased light intensity in loader_json_blender example.

Turns out it may be useful after all, seems some GPUs may have troubles dealing with texture coordinates outside of <0,1> (need to be tested if normalization helps there).