Hello Martoof, I’m curious to know if you find a way to get it, I actually search a tools or something to do this (fade polygon of my sphere like a landscape). If you have an answer please contact me with skype (consomer.yourself2) or by email (qwertye656@hotmail.com). If you read this and send a mail, please tell me here because I don’t specially look my mail. Thanks a lot and have a good day!