How can I calculate cube size that I will get after equirectangular->cube6 tansformation with krpano Tools?
That formula I've found on http://panospace.wordpress.com/2008/07/04/vr-…-on-the-iphone/ :
cubeface side = sqrt(3)/6 * equirect longside
Edit: removed hotlink
But with krpano I get other results.
Example: equirectangular source 4366x2183px.
Cube size from ktransform 1390px.
Cube size from formula 1260px.