WPF 3D Camera Animations

Question

Hey guys,

I have a double property called cameraAngle which is tied to a rotationtransformation, which is applied to the camera. I have series of 3d tiles with pictures on them (think cooliris), when i click the left key down i want my camera angle to go from 0 - 45 degrees. I know I want to use something like a doubleAnimation, but my cameraAngle is just a member variable, I want the camera to look at the scene from a 45 degree angle, but i want it to steadily go from 0-45 and not do it in a heartbeat. here is my member var

        public double CameraAngle
    {
        get 
        {
            AxisAngleRotation3D rotTemp = cameraRotation.Rotation as AxisAngleRotation3D;
            return rotTemp.Angle;

        }

        set
        {
            if (value >= 45)
                return;
            else if (value <= -45)
                return;
            else
            {
                AxisAngleRotation3D rotTemp = cameraRotation.Rotation as AxisAngleRotation3D;
                rotTemp.Angle = value;

            }
        }
    }