Dear Hans,

On Fri, 5 Jun 2009, Hans Hagen wrote:

>> a draft for an analog of LaTeX movie15 package for including Adobe Reader
>> compatible 3d models into PDF files is at
>
> i'll have a look at it next week; the interface needs some more thinking from 
> my side; in principle we should not use externalfigure here but the rendering 
> mechanism

BTW, the mechanism ConTeXt uses to include movies (it served me as a 
starting point) is described in part "13.4 Movies" of PDF 32000-1:2008 
ISO/Adobe spec, but preceded there with the following note:
  The features described in this sub-clause are obsolescent and their use
  is no longer recommended.
  They are superseded by the general multimedia framework described in
  13.2, “Multimedia.”

Thus even more thinking may be desirable...

           Sincerely, Michail