[Openal] Setting listener orientation

[Peter Soxberger]

Hi!

I guess this is an often asked question but I didn't found any useful information for this problem:

I have the position (.x, .y, .z,) and the angles/orientation (.pan, .tilt, .roll) of the camera of a grafic engine. Setting the OpenAL listener position is easy. But how do I set the orientation?

alListenerfv(AL_ORIENTATION, ListenerOri);

This is the function but I don't know how I have to convert the angles into an "at" and "up" vector.

Could anybody tell me how this works? Btw. I have no clue what is ment by an at and up vector. Why doesn't OpenAL use angles for the orientation?

Thanks for your help!


Best regards,
Peter Soxberger
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