ios旋转动画（ios旋转立体图形游戏）

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

1 2 3 4 5 //*******添加scrollView******* [self createScrollView]; //******创建立方体视图组****** [self createCubicViewArray];

1 2 3 4 5 6 7 //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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 #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; }

这里记得要复原一下3D变换，不然滑快了会出现页面错乱

1 2 3 4 5 6 7 8 9 10 11 -(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{ //改变选中页序号 [self changeIndex]; //3D变幻恢复原状态 for (UIView * view in _viewArray) { view.layer.transform=CATransform3DIdentity; } }

对了，记得添加一个很重要的透视变换函数，核心在于仿射矩阵的m34属性，这样才会产生远小近大的3D效果，让动画更炫酷

1 2 3 4 5 6 7 8 9 //3D透视函数 CATransform3D CATransform3DMakePerspective(CGPoint center, float disZ) { CATransform3D transToCenter = CATransform3DMakeTranslation(-center.x, -center.y, 0); CATransform3D transBack = CATransform3DMakeTranslation(center.x, center.y, 0); CATransform3D scale = CATransform3DIdentity; scale.m34 = -1.0f/disZ; return CATransform3DConcat(CATransform3DConcat(transToCenter, scale), transBack); }