Detect If Surface Is 90 Degrees to Ground

[Gaming_Unlim]

I feel as if I should know how to do this, but I was wondering how I could detect if a wall the player is looking at is 90 degrees to the ground.
For example:

[IMG]http://imgur.com/1dl6oMG.png[/IMG]

[dingusnin]

Trace towards the wall, Get the normal, Do Vector -> Angle.

[Gaming_Unlim]

I'm doing this.

[lua]
local normEndpoint = endpoint:GetNormal()
print(normEndpoint:Angle())
[/lua]

endpoint is the HitPos of the trace, I used GetNormal() instead of Normalize() because I need to use that vector later in the function.

I traced to a wall that is perpendicular to the ground and this is the result I get. And its all over the place when I click on different spots of the wall.

[lua]
0.881 34.584 0.000
2.552 34.659 0.000
[/lua]

[OzymandiasJ]

Use HitNormal not HitPos

[Gaming_Unlim]

[QUOTE=OzymandiasJ;42957638]Use HitNormal not HitPos[/QUOTE]

Thank you so much, it works perfectly!