Hello everyone! I am trying to make my own class with custom effects wrapped

Hello everyone!

I am trying to make my own class with custom effects wrapped around FastLED.
I have problem starting :-), I cannot understand how to write a constructor for my class, how to create FastLED object inside of my constructor. Are there any simple samples of classes wrapped around FastLED?

I am not a guru in embedded C++, only some basic experience, but have some knowledge of object-oriented programming (Delphi, Java, .Net).