i need to draw an imaginary line in a 3D world using the slope

method. (terminology is off. been a few years since math class)

if i remember right its the difference of x over the difference of y.

(X1 - X2 ) / (y1 -y2) used to calculate any point on a straight line.

in short im trying to find a way to use this in a 3d world for collision detection(GuNs – path of the bullets/projectiles).

any links would be a big help.

thx