Partial panorama default cube size fix
Partial panorama default cube size fix

Change computation of cube size - taking haov into account
mpetroff/pannellum,mpetroff/pannellum,psteph801/psteph801.github.io,psteph801/psteph801.github.io,mpetroff/pannellum,psteph801/psteph801.github.io,mpetroff/pannellum,psteph801/psteph801.github.io