Created attachment 306445 [details]
I created ebuilds for Panotour and Panotour Pro, which I have been casually been using over the past couple of months. It is commercial software but also functions as a feature-limited trial.
I did try unbundling Qt and it almost worked but they linked to libpng 1.4 and opening files crashes the program if yours is linked to libpng 1.5.
Created attachment 306447 [details]