CGPoint CGPointMake ( CGFloat x, CGFloat y );

x, y has to be floats, passing only integers might not work.

especially good to know, when and if ints get converted into floats.

= CGPointMake(100.0f + someIntVar, 50.0f + anotherIntVar); ≠ CGPointMake(100 + someIntVar, 50 + anotherIntVar);

this .0f seems to have a meaning after all.