Expose more fields, like RayHandler.blurNum, shadows and culling

[XOCODE-OP]

Currently many variables can only be set not be read.
Would be great to have rayHandler.getBlurNum(), rayHandler.isBlur(), rayHandler.isCulling() and rayHandler.isShadows(). There may be more but these are the ones I happen to see.

[adam-law]

I, for one, would like the intersect() method to be exposed.