presentationlayer layer modallayer

进行了个测试

向上移动

CABasicAnimation * animation = [AnimationUtil
translate3d:CATransform3DMakeTranslation(0, -100,
100) dur:1
direction:1
repeatCount:0];
[_mView.layer
addAnimation:animation
forKey:nil];

_mView.layer.transform
=CATransform3DMakeTranslation(0, -100,
0);
向下移动

CABasicAnimation * animation2 = [AnimationUtil
translate3d:CATransform3DMakeTranslation(0,
100, 0)
dur:1 direction:1
repeatCount:0];
[_mView.layer
addAnimation:animation2
forKey:nil];

_mView.layer.transform
=CATransform3DMakeTranslation(0,
100,
0);
presentationlayer只在第一次动画后就origin位置就不变了即使设置了.layer.transform，modallayer一开始就变了（modalayer在那里按钮的监听就在modallayer对应的位置）layer也是随着layer.transform改变而改变 ,如果把layer.transform注释掉就和presentationlayer一起随着动画动而改变值

用CATransform3D实现的动画会非常连续