2P writes: You must be familiar with Hacking's The Universe in a Nutshell, a science student made it a romantic idea. He put the beautiful starry sky in a bowl as a gift for his girlfriend. See the picture, pretty cool right? But he is not our point today. A player of WoW inspired by the idea and made a map of Azeroth with crystal pastern. It is luminous and looks like starry sky at night. And here I want to introduce the procedure which could be a general flow.