How to rotate image and arrow line from a fixed center point - iphone

Question

In my app i have a fix size of button/center points, and i wants to rotate arrow line and this attached image also rotate when i touch/scroll up/down.
And i have made a demo in this i scroll only images using icarousel classes.
but i can't scroll both arrow and image scroll both at a time.
Please help me how to implement this.
and my code for only image scroll using icarousel is here..
- (UIView *)carousel:(__unused iCarousel *)carousel viewForItemAtIndex: (NSInteger)index reusingView:(UIView *)view
{
UIView *viewFor;
UIImageView *itemView;
if (view==nil) {
viewFor=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 200, 200)];
itemView=[[UIImageView alloc]initWithFrame:CGRectMake(0, 45, 120, 120)];
[itemView.layer setCornerRadius:itemView.frame.size.width/2];
[itemView setClipsToBounds:YES];
[viewFor addSubview:itemView];
StikImage=[[UIImageView alloc]initWithFrame:CGRectMake(-140, 95, 140, 20)];
StikImage.backgroundColor=[UIColor whiteColor];
[viewFor addSubview:StikImage];
}
else
{
viewFor=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 200, 200)];
itemView=[[UIImageView alloc]initWithFrame:CGRectMake(0, 45, 120, 120)];
[itemView.layer setCornerRadius:itemView.frame.size.width/2];
[itemView setClipsToBounds:YES];
[viewFor addSubview:itemView];
StikImage=[[UIImageView alloc]initWithFrame:CGRectMake(-140, 95, 140, 20)];
StikImage.backgroundColor=[UIColor whiteColor];
[viewFor addSubview:StikImage];
}
itemView.image=[images objectAtIndex:index];
return viewFor;
}
And here is my Custom type icrousel method for transform images
- (CATransform3D)carousel:(iCarousel *)carousel itemTransformForOffset:(CGFloat)offset baseTransform:(CATransform3D)transform {
const CGFloat centerItemZoom = 1.6;
const CGFloat centerItemSpacing = 1.2;
const CGFloat centerItemYOffset = 100;
CGFloat spacing = [self carousel:carousel valueForOption:iCarouselOptionSpacing withDefault:1.3f];
CGFloat absClampedOffset = MIN(2.5, fabs(offset));
CGFloat clampedOffset = MIN(1.0, MAX(-1.0, offset));
CGFloat scaleFactor = 1.0 + absClampedOffset * (1.2/centerItemZoom - 1.0);
CGFloat yoffset = (1.0f - absClampedOffset) * centerItemYOffset;
offset = (scaleFactor * offset + scaleFactor * (centerItemSpacing - 1.0) * clampedOffset) * carousel.itemWidth * spacing;
if (carousel.vertical)
{
transform = CATransform3DTranslate(transform, yoffset, offset, -absClampedOffset);
}
else
{
transform = CATransform3DTranslate(transform, offset, yoffset, -absClampedOffset);
}
transform = CATransform3DScale(transform, scaleFactor, scaleFactor, 5.0f);
return transform;
}

Answer 1

Use below code for rotate the image view
imageview.transform = CGAffineTransformMakeRotation(degrees * M_PI/180);
you can use what you want degree sizes are like 180, 90, 240, 270..., depends on your requirements "touch/scroll up/down"