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我有一个UIView使用CALayer变换旋转的对象:

// Create uiview object.
UIImageView *block = [[UIImageView alloc] initWithFrame....]

// Apply rotation.
CATransform3D basicTrans = CATransform3DIdentity;
basicTrans.m34 = 1.0/-distance;
blockImage.layer.transform = CATransform3DRotate(basicTrans, rangle, 1.0f, 0.0f, 0.0f);

旋转后,对象的边缘不会抗锯齿.我需要反他们.请帮帮我.怎么做到呢？