CATransform3D三维变换 struct CATransform3D { CGFloat m11, m12, m13, m14; CGFloat m21, m22, m23, m24; CGFloat m31, m32, m33, m34; CGFloat m41, m42, m43, m44; }; 方法 描述 CATransform3DIdentity 单位矩阵 CATransform3DIsIdentity (CATransform3D t) 是否是单位矩阵 CATransform…