gluLookAt accelerometer

Question

Hi everyone,

I am currently coding a little AR-Game for myself using the iPhone 3GS ;-)

I want to use the accelerometer & compass data for rotating my camera in opengl. The camera has a fixed position and can only rotate due to the accelerometer. The iPhone is initially rotated 90° to have a bigger widescreen ;-) So the axes are switched...

When I hold the iPhone straigt in front of me I get this values:

• accel.x = 1
• axxel.y = 0
• accel.z = 0

When move the iPhone straight to the top of me (over my head) I get these values:

• accel.x = 0
• accel.y = 0
• accel.z = 1

So the values are between :

• x: 1 straight ahead and 0 over my head
• y: 0 straight ahed and 0 over my head
• z: 0 straight ahead and 1 over my head

So I want to use x, y, z for my camera world coordinates. E.g. accel.x = 0.5 and accel.z = 0.5

The camera should change the centerX, centerY and centerZ values due to the values I get from the accelerometer.

How can I manage this?

Thanks ;-)