Scroll to section or one page down, not by links or buttons, but by hitting SCROLLWHEEL once

Please help me find a way to setup a nice scrolling behavior for my website.
I’am looking for a solution where i the oppotunity to set a ancher to a specific section, so that when i hit the scrollwheel once, it will jump down to the first section, and scroll once more it jumps down to the next section. NOT BY HITTING A LINK OR BUTTON, only using scrollwheel.

1 eksample of this feature:
2 eksample of this feature:

Is this really that hard to make?