Hello,

I'm trying to get a global normal vector based upon a model's angles.

I know I have pan, tilt and roll, and I know I need to use these to get what I am after, but I'm not sure how to go about it exactly.

My 3D Maths are rusted, lol.
I understand that I would be using cosine and sine to find the distances I am looking for and then adding those to the model's coordinates. I'm lost after that. Not sure what I would be sining and cosining to get the values I'm after.

I want to find the global coordinates that are 50 units below the model. When I say "below", I don't mean "50 units straight down", I mean in the direction that the bottom of the model is facing.

Geez, I'm so bad at explaining this.

If anyone understands what I'm trying to say here, can you please assist?

Thank you!

wont vec_for_angle do?
Just scale it with 50.

I suppose, but that function assumes that I'm using a direction vector that's pointing forward. I'm using a direction vector that's pointing down, thus I would need to take the roll angle into consideration as well since it would also effect the vector.

Im not sure but somthing like this may be what you're after...
vec_rotate(normal, myentity.pan);
or possibly
vec_rotateaxis(normal, myentity.x, myentity.pan);

Ahhh, I think I found a command to do just what I want:

t_vector = vec_for_ent(vector(0,0,-50),me);


Maybe this will help someone else out in future searches.


I very much appreciate the assistance, guys! I would not have thought of looking for a command, so without coming here I might have persue'd the mathematical approach and wasted lots of time. lol

heya, use
where you is the model being aligned below, and me, is the origin