**comp.graphics.algorithms**

## Subject: **Newbie 3D airplane help**

Good morning!

I have an idea for a basic 3D game. I'm trying to come up with a

generic algorithm that will give me a relative x,y,z orientation of a

plane in reference to the observers on the ground. Let's say I already

have given the plane a yaw, pitch, roll, and heading values. How can I

determine the plane's relative orientation to different observers in

the ground?

What I have in mind is that the relative orientation of the plane can

be assigned a unique id. If an observer takes a "picture" of this

unique id / orientation, then a point is scored. Consecutive pictures

of the orientation will not be counted.

In other words, I have a plane flying around and different observers on

the ground are looking at it and their object is to "shoot" as much of

the plane as possible.

Where should I start? Right now, I'm mostly curious about how to

determine the relative orientation of the plane to an observer given

the yaw, pitch, roll, and heading data. I've already figured out how to

calculate the plane's distance to the observers.

Thanks!

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