iOS动画角度旋转

我正在尝试360度旋转视角,但倾斜度为45度.

像这样

我无法想办法做到这一点.

到目前为止,我已经成功了

CABasicAnimation* animation = [CABasicAnimation
                               animationWithKeyPath:@"transform.rotation.y"];
animation.fromValue = @(0);
animation.tovalue = @(2 * M_PI);
animation.duration = 1;

[self.layer addAnimation:animation forKey:@"rotation"];

它在y轴上旋转,但我想要的是这个Y轴在旋转之前倾斜45度.

解决方法

首先,您应该看到下面的链接,它解释了“框架”和“边界”之间的差异.
UIView frame,bounds and center

现在,这是我的答案.

/* add the 4 lines below */
self.transform = CGAffineTransformMakeRotation(M_PI_4);
self.layer.bounds = CGRectMake(0.0f,0.0f,60.0f,200.0f);
self.layer.position = CGPointMake(150.0f,300.0f);

CABasicAnimation* animation = [CABasicAnimation
                               animationWithKeyPath:@"transform.rotation.y"];
animation.fromValue = @(0);
animation.tovalue = @(2 * M_PI);
animation.duration = 1;

[self.layer addAnimation:animation forKey:@"rotation"];