涉及到的技术点

CATransform3DRotate 转换坐标系

整体视图的层级结构

tvOSCardView cardImageView cardParallaxView

转换坐标系的代码

CGFloat xFactor = MIN(1, MAX(-1, (touchPoint.x - (self.bounds.size.width / 2)) / (self.bounds.size.width / 2))); CGFloat yFactor = MIN(1, MAX(-1, (touchPoint.y - (self.bounds.size.height / 2)) / (self.bounds.size.height / 2))); cardImageView.layer.transform = [self transformWithM34:1.0 / -500 xf:xFactor yf:yFactor]; cardParallaxView.layer.transform = [self transformWithM34:1.0 / -250 xf:xFactor yf:yFactor]; CGFloat zFactor = 180 * atan(yFactor / xFactor) / M_PI + 90;

tvOSCardAnimation动画的运行结果

文／JoyceZhao（简书作者）

原文链接：http://www.jianshu.com/p/42770b5cee0d

著作权归作者所有，转载请联系作者获得授权，并标注“简书作者”。