velocity torus

[sunnyshi2005]

how can I create a velocity torus which accelerates the object collide with the torus inside exactly the same as the original velocity and rotate the angle to the angle of the tangent line to the contact point?

[Xray]

What is a velocity torus?

[FRA32]

v = math.vec.len(vel);
ang = math.atan2(y,x)+-math.pi/2; (pick either + or - to determine the rotation direction)
vel = v*[math.cos(ang),math.sin(ang)]

[Xray]

FRA32 - Could you please explain what that does in words so that math dummies like me could understand it?

[FRA32]

Oof so many necro answers, but this forums dead anyways.

My script would take the velocity and the position, determine the angle the position had to a point, and set the velocity perpendiicular to that, causing the object to orbit around a point. I didn't really understand their question so I just gave them that answer hoping it would fit xP