When would a UIView's bounds.origin not be (0, 0)?

Question

When would an UIView\'s bounds.origin not be (0, 0)?

This paragraph was helpful to me:

IMPORTANT!! Bounds X and Y, the

Answer 1

The bounds.origin will be negative if you initialize a view with negative width/height. For example, if you did

UIView* v = [[UIView alloc] initWithFrame:CGRectMake(5, 5, -10, -20)];

the frame would be:

origin = {
  x = -5, 
  y = -15
}, 
size = {
  width = 10, 
  height = 20
}

bounds:

origin = {
  x = -10, 
  y = -20
}, 
size = {
  width = 10, 
  height = 20
}

center:

x = 0, 
y = -5

try it for yourself!