[android-developers] how to draw a simple shape according to compass data

Hello to everyone;

I am trying to develop an application based on compass and camera
surface. In the application there will be a camera preview and I want
to draw a rectangle and text on this preview. When user turns the
device aroun him, there will be rectangles showing the main
directions. In other words; there must be 4 rectangles on North, West,
South and East. When user turns the camera, he can see the rectangles
in their directions (according to azimuth value).

Now I am able to get the azimuth value and I am able to draw a
rectangle. But how can I make this rectangle moving according to
azimuth value?

Can anyone help me?

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