Centre Buttons In Swift - Objective C Conversion Issue - objective-c

Question

In Objective C, I am using a function to centre some buttons, which works fine.
The buttons centre perfectly on the screen.
However, converting the code to swift it isn't working as expected. There is extra space on the left hand side:
func centerImageViews()
// Measure the total width taken by the buttons
var width:CGFloat = 0.0
for (index, item) in enumerate(self.soundBoxes) {
if(item.tag>=numberOfBoxes){
item.alpha=0
}else{
item.alpha=1
width += item.bounds.size.width + 10
}
if (width > 10){
width -= 10;
}
// If the buttons width is shorter than the visible bounds, adjust origin
var origin:CGFloat = 0;
if (width < self.view.frame.size.width){
origin = (self.view.frame.size.width - width) / 2.0;
}
// Place buttons
var x:CGFloat = origin;
var y:CGFloat = 200;
for (index, item) in enumerate(self.soundBoxes) {
item.center = CGPointMake(x + item.bounds.size.width/2.0, y + item.bounds.size.height/2.0);
x += item.bounds.size.width + 10;
}
}
}
In Objective C:
- (void)centerImageViews:(NSArray*)imageViews withCount:(int)number
{
int kButtonSeperator=10;
// Measure The Total Width Of Our Buttons
CGFloat width = 0;
for (UIImageView* hit in soundBoxes)
if (hit.tag>=numberOfBoxes) {
hit.alpha=0;
} else {
width += hit.bounds.size.width + kButtonSeperator;
hit.alpha=1;
}
if (width > kButtonSeperator)
width -= kButtonSeperator;
CGFloat origin = 0;
if (width < self.view.frame.size.width)
origin = (self.view.frame.size.width - width) / 2.f;
CGFloat x = origin;
CGFloat y = 85;
UIImageView* hit;
for (hit in imageViews) {
hit.center = CGPointMake(x + hit.bounds.size.width/2.f, y + hit.bounds.size.height/2.f);
//NSLog(#"X Is %f",hit.center.x);
x += hit.bounds.size.width + kButtonSeperator;
}
}
}