Manual positioning from a float value in iOS

Question

I've currently got an item positioned using the following

CGRect torpfr = torp.frame;
torpfr.origin.x =  [[NSUserDefaults standardUserDefaults] floatForKey:@"torpx"];
torpfr.origin.y =  [[NSUserDefaults standardUserDefaults] floatForKey:@"torpy"];
torp.frame = torpfr;

Basically this creates and positions the button based upon floats stored under torpx and torpy.

Essentially I have one object (torpfr) at torpx, torpy, and I needg to draw a second object (let's assume label1) offset to the Torpfr.

Any help is much appreciated.

Answer 1

have a look here : https://developer.apple.com/library/mac/#documentation/graphicsimaging/reference/CGGeometry/Reference/reference.html

you'ld find : CGRectOffset

A rectangle that is the same size as the source, but with its origin offset by dx units along the x-axis and dy units along the y-axis with respect to the source.

about animation, have a look here : iOS - Moving a UITextField to a Different Position when a UIView Moves