先来看看效果：
下面进入正题，是时候展现真正的技术了：
首先在控制器里添加一个scrollView，再在scrollView上的对应位置上添加要展示的imageView(立方体视图组)，当然也可以放上其它子控制器的view实现更多功能这个随意不是重点
//*******添加scrollView*******
[self createScrollView];
//******创建立方体视图组******
[self createCubicViewArray];
//添加视图到scrollView上
for (int i=0; i<_viewArray.count; i++) {
UIImageView *transView=_viewArray[i];
//视图在scrollView上对应的位置
transView.x=self.view.bounds.size.width * i;
监听scrollView的滑动事件，在这里要先获取到显示的当前页、上一页、下一页，然后让这三个页面同时做3DTransform变换
#pragma mark - scrollView滑动事件
-(void)scrollViewDidScroll:(UIScrollView *)scrollView{
//当前页数
NSInteger currentPage=_currentPage;
//当前视图
UIView *currentView=_viewArray[currentPage];
//上一个视图
UIView *lastView=nil;
if (currentPage-1>=0) {
lastView=_viewArray[currentPage-1];
}
//下一个视图控制器视图
UIView *nextView;
if (currentPage+1<=3) {
nextView=_viewArray[currentPage+1];
}
//本次偏移距离
CGFloat currentOffset=scrollView.contentOffset.x-currentPage*self.view.bounds.size.width;
//本次偏移角度
CGFloat deltaAngle=currentOffset/self.view.bounds.size.width * M_PI_2;
//****************当前视图移动变幻***************
//设置锚点
currentView.layer.anchorPoint=CGPointMake(0.5, 0.5);
//向屏幕前方移动
CATransform3D move = CATransform3DMakeTranslation(0, 0, self.view.bounds.size.width/2);
//旋转
CATransform3D rotate = CATransform3DMakeRotation(-deltaAngle, 0, 1, 0);
//平移
CATransform3D plaintMove=CATransform3DMakeTranslation( currentOffset, 0, 0);
//向屏幕后方移动
CATransform3D back = CATransform3DMakeTranslation(0, 0, -self.view.bounds.size.width/2);
//连接
CATransform3D concat=CATransform3DConcat( CATransform3DConcat(move, CATransform3DConcat(rotate, plaintMove)),back);
CATransform3D transform=CATransform3DPerspect(concat, CGPointMake(currentOffset/2, self.view.bounds.size.height), 5000.0f);
//添加变幻特效
currentView.layer.transform=transform;
//****************下一个视图移动变幻***************
//设置锚点
nextView.layer.anchorPoint=CGPointMake(0.5, 0.5);
//向屏幕前方移动
CATransform3D move2 = CATransform3DMakeTranslation(0, 0, self.view.bounds.size.width/2);
//旋转
CATransform3D rotate2 = CATransform3DMakeRotation(-deltaAngle+M_PI_2, 0, 1, 0);
//平移
CATransform3D plaintMove2=CATransform3DMakeTranslation( currentOffset-self.view.bounds.size.width, 0, 0);
//向屏幕后方移动
CATransform3D back2 = CATransform3DMakeTranslation(0, 0, -self.view.bounds.size.width/2);
//拼接
CATransform3D concat2=CATransform3DConcat( CATransform3DConcat(move2, CATransform3DConcat(rotate2, plaintMove2)),back2);
CATransform3D transform2=CATransform3DPerspect(concat2, CGPointMake(self.view.bounds.size.width/2+currentOffset/2, self.view.bounds.size.height), 5000.0f);
//添加变幻特效
nextView.layer.transform=transform2;
//****************上一个视图移动变幻***************
//设置锚点
lastView.layer.anchorPoint=CGPointMake(0.5, 0.5);
//向屏幕前方移动
CATransform3D move3 = CATransform3DMakeTranslation(0, 0, self.view.bounds.size.width/2);
//旋转
CATransform3D rotate3 = CATransform3DMakeRotation(-deltaAngle-M_PI_2, 0, 1, 0);
//平移
CATransform3D plaintMove3=CATransform3DMakeTranslation( currentOffset+self.view.bounds.size.width, 0, 0);
//向屏幕后方移动
CATransform3D back3 = CATransform3DMakeTranslation(0, 0, -self.view.bounds.size.width/2);
//拼接
CATransform3D concat3=CATransform3DConcat(CATransform3DConcat(move3, CATransform3DConcat(rotate3, plaintMove3)),back3);
CATransform3D transform3=CATransform3DPerspect(concat3, CGPointMake(-self.view.bounds.size.width/2+currentOffset/2, self.view.bounds.size.height), 5000.0f);
//添加变幻特效
lastView.layer.transform=transform3;
}
