iPhone, how to calculate iPhone device three axis angle via UIAcceleration?
as topic,
I am try to use the code as follows :
xAngle = 90.0 *x;
yAngle = 90.0开发者_如何学Go* y;
zAngle = 90.0* z;
but seem it is not right (x,y,z is the UIAcceleration attributes x, y and z)
am I miss some thing in this algorithm ?
thanks for your help
Best .
cos (angleXaxis) = x / sqrt(x^2 + y^2 + z^2)
cos (angleYaxis) = y / sqrt(x^2 + y^2 + z^2)
cos (angleZaxis) = z / sqrt(x^2 + y^2 + z^2)
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