iCarousel options

carousel.m

#import "TestViewController.h"

@interface TestViewController ()

@property (nonatomic, strong) IBOutlet iCarousel *carousel;
@property (nonatomic, strong) NSArray *informationArray;

@end
@implementation TestViewController

- (void)viewDidLoad{
  
  self.informationArray = [NSArray arrayWithObjects:@"a", @"b", nil];

  carousel = [[iCarousel alloc]initWithFrame:CGRectMake(0, 0, 100, 100)];
  carousel.type = iCarouselTypeLinear;
  carousel.viewpointOffset = CGSizeMake(0, 5);
  [carousel setContentOffset:CGSizeMake(0, 5)];
  carousel.delegate = self;
  carousel.dataSource = self;
  
}

#pragma mark iCarousel Delegate
- (NSUInteger)numberOfItemsInCarousel:(iCarousel *)carousel1
{
    return [self.informationArray count];
}

- (UIView *)carousel:(iCarousel *)carousel1 viewForItemAtIndex:(NSUInteger)index reusingView:(UIView *)view
{
  UIButton *button = (UIButton *)view;
  
  button = [UIButton buttonWithType:UIButtonTypeCustom];
  button.frame = CGRectMake(0.0, 0.0, xButtonSize, yButtonSize);
  button.alpha = 1.0;
  button.tag = 1;
  
  return button;
}

//- (void)carouselCurrentItemIndexDidChange:(iCarousel *)carouselLocal{
//
//}

- (CATransform3D)carousel:(iCarousel *)_carousel itemTransformForOffset:(CGFloat)offset baseTransform:(CATransform3D)transform
{
    //implement 'flip3D' style carousel
    transform = CATransform3DRotate(transform, M_PI / 8.0f, 0.0f, 1.0f, 0.0f);
    return CATransform3DTranslate(transform, 0.0f, 0.0f, offset * carousel.itemWidth);
}

//Options of iCaroucel
- (CGFloat)carousel:(iCarousel *)_carousel valueForOption:(iCarouselOption)option withDefault:(CGFloat)value{
    //customize carousel display
    switch (option)
    {
        case iCarouselOptionWrap:
        {
            //normally you would hard-code this to YES or NO
            return YES;
        }
        case iCarouselOptionSpacing:
        {
            //add a bit of spacing between the item views
            return value * 1.05f;
        }
        case iCarouselOptionFadeMax:
        {
            if (carousel.type == iCarouselTypeCustom)
            {
                //set opacity based on distance from camera
                return 0.0f;
            }
            return value;
        }
        default:
        {
            return value;
        }
    }
}