In section 2.9.1 Quaternions, 4th paragraph reads as if it's missing an equation for the second representation of a quaternion:
A quaternion can be represented as a quadruple [EQ present] or as [EQ missing] , where is an imaginary 3-vector and is the real part. We will use both representations interchangeably in this section.
In general, you can send errata/bugs to authors@pbrt.org, but we got this one. :-)
It looks like an equation that MathJax wasn't happy with. I've got it fixed now and will include that fix in a push to the site in a little bit.
If you want to be listed as something other than "OnACoffeeBreak" in the errata credits, send me an email (matt@pharr.org).
Thanks again!
> where the an accurate modeling
The image viewer works brilliantly and the renders are looking gorgeous. Looking forward to spending some hours with this on my iPad later.
Your road map says:
> We plan to release updated versions of the book roughly once a year, starting a year or so from now.
Out of curiosity, do you guys still plan to release new print editions?
I still buy physical books rather than e-books, but I always thought that hyperlinks were a great part of a reading experience as well.