UIView 的Transform。（旋转，缩放，3D旋转）

http://blog.sina.com.cn/s/blog_4b657a0601014bld.html

2D旋转：

map.transform = CGAffineTransformMakeRotation(3.14/3);

3D旋转

 

       CALayer *layer = map.layer;

    CATransform3D rotationAndPerspectiveTransform = CATransform3DIdentity;

    rotationAndPerspectiveTransform.m34 = 1.0 / -500;

    rotationAndPerspectiveTransform = CATransform3DRotate(rotationAndPerspectiveTransform,45.0f * M_PI / 180.0f, 0.0f, 1.0f, 0.0f);

    layer.transform = rotationAndPerspectiveTransform;

缩放：

 

    CGAffineTransform transform = map.transform;

    transform = CGAffineTransformScale(transform, 2,2);

    map.transform = transform;