Classic scene effects 1: The pulpo

Not everyday I'll post in english but... today is not an usual day! Today we have somethig useful in this blog!! (or I hope so!).

I've written my first tutorial explaining one way to code a classic scene effect: the pulpo!!
It's quite simple to do, but some days ago I was looking for something similar around the web, and I didn't found anything so I decided to do it by myself.

You can find it here. Enjoy it!!

NOTE: pulpo is the spanish word of octopus. :)