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