Hi,

Am quite new to openGL and have tried my best to steer clear of any "complicated" maths. But i think i am going to have to dive in, so to speak.

My first question is basically what is a vector and a normal??

My program generates a tree and uses 3d lines. I would like to do some collision detection between the branches. But cant work out how to do it. I think i should do some vector maths but unsure.

Can some one please shed some light on this.

So just to round up my questions are:

Whats a vector and normal

How do i work out vector of a 3d line

What can i do with this (in ref collision)

Cheers, very much appreciated if someone could help