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First you need to know what is an ellipsoid and why we use them. The earth is spherical and to be exact it can be approximated using an ellipsoid. Location Service and all GPS system that work world wide, must use an ellipsoid that fits the best way the earth, Why we need an ellipsoid? because we need a mathematical model to do the computations. for ...


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You have two solutions: 1 - Set scale of your gamepad: self.gamepad.scale = 0.5f This will make all the gamepad look smaller (the main circle and the direction sprites, as they are child of the main circle). 2 - Create a init method with a size, and calculate there the size of your childs: -(id)initWithJoystickWithSize:(CGSize) size andImage:(NSString ...



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