Would like to have PTViewer installable from Gentoo Linux. There are a host of other pano photo tools already in portage (hugin, autopano-sift, libpano) and this is an interactive version of the same sort. Project can be found here: http://sourceforge.net/projects/ptviewer/
Actually, that sourceforge site has no files for download at this time. However, another project has the same software (different fork). That URL is: http://www.fsoft.it/panorama/ptviewer.htm
No progress here for 1 year; closing WONTFIX. Feel free to reopen with an ebuild.