（iOS, Swift）iOS控件平面旋转和 3D旋转

#（iOS, Swift）iOS控件平面旋转和 3D旋转| 来源: 网络整理| 查看: 265

文章目录：

平面旋转顺时针旋转90度顺时针旋转180度逆时针旋转90度持续旋转 3D旋转向量为(1, 0, 0)时向量为(0, 1, 0)时向量为(0, 1, 0)时持续旋转平面旋转：顺时针旋转90度： UIView.animate(withDuration: 1) { self.captainLabel.transform = CGAffineTransform(rotationAngle: CGFloat.pi / 2) } 顺时针旋转180度： UIView.animate(withDuration: 1) { self.captainLabel.transform = CGAffineTransform(rotationAngle: CGFloat.pi) } 逆时针旋转90度：

需要用到

/* Invert `t' and return the result. If `t' has zero determinant, then `t' is returned unchanged. */ /* 对调用该方法的 CGAffineTransform实例进行取反并返回 */ @available(iOS 2.0, *) public func inverted() -> CGAffineTransform

事例代码

UIView.animate(withDuration: 1) { self.captainLabel.transform = CGAffineTransform(rotationAngle: CGFloat.pi / 2).inverted() } 持续旋转：

需要用到

/* 用来让 CGAffineTransform实例关联我们指定的 CGAffineTransform 实例 */ /* Concatenate `t2' to `t1' and return the result: t' = t1 * t2 */ @available(iOS 2.0, *) public func concatenating(_ t2: CGAffineTransform) -> CGAffineTransform

事例代码

Timer.scheduledTimer(withTimeInterval: 1, repeats: true) { (_) in UIView.animate(withDuration: 1) { self.captainLabel.transform = CGAffineTransform(rotationAngle: CGFloat.pi / 2).inverted().concatenating(self.captainLabel.transform) } } 3D旋转：

需要用到

/* 对CATransform3D的实例进行变换（向向量(x, y, z)的方向同时以向量为轴旋转 angle 角度）并返回新的CATransform3D实例。*/ /* Rotate 't' by 'angle' radians about the vector '(x, y, z)' and return * the result. If the vector has zero length the behavior is undefined: * t' = rotation(angle, x, y, z) * t. */ @available(iOS 2.0, *) public func CATransform3DRotate(_ t: CATransform3D, _ angle: CGFloat, _ x: CGFloat, _ y: CGFloat, _ z: CGFloat) -> CATransform3D

向量为(1, 0, 0)时：

UIView.animate(withDuration: 1) { self.captainLabel.layer.transform = CATransform3DMakeRotation(CGFloat.pi, 1, 0, 0) }

向量为(0, 1, 0)时：

UIView.animate(withDuration: 1) { self.captainLabel.layer.transform = CATransform3DMakeRotation(CGFloat.pi, 0, 1, 0) }

向量为(0, 0, 1)时：

UIView.animate(withDuration: 1) { self.captainLabel.layer.transform = CATransform3DMakeRotation(CGFloat.pi, 0, 0, 1) } 持续旋转： Timer.scheduledTimer(withTimeInterval: 1, repeats: true) { (_) in UIView.animate(withDuration: 1) { self.captainLabel.layer.transform = CATransform3DRotate(self.captainLabel.layer.transform, CGFloat.pi / 2, 1, 0, 0) } }

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（iOS, Swift）iOS控件 平面旋转 和 3D旋转

（iOS, Swift）iOS控件平面旋转和 3D旋转