frame&bounds.jpg
point A
frame:(0, 0, 550, 400)
bounds:(0, 0, 550, 400)
point B
frame:(200, 100, 200, 200)
bounds:(0, 0, 200, 200)
- Frame is in terms of superview's coordinate system,
- Bounds is in terms of local coordinate system,
- Center is in terms of local coordinate system.
