johnm@spudge.UUCP (John Munsch) (08/02/90)
On page 672 of the book Computer Graphics Principals & Practice it says that exercise 15.25 explains how to use a z-buffer for picking. What exercise 15.25? The exercises stop at 15.24. If one of the authors has it handy it would be nice nice to get a preliminary errata out even if it isn't the final version. John Munsch