Question

我们如何将图像从起点移动到终点360度？移动图像360度？

Answer 1

您可以按一定数量的弧度旋转视图，无论它是小于完整旋转还是完整旋转的多倍，而不必将旋转分割成碎片。作为示例，以下代码将每秒一次旋转视图达指定的秒数。您可以轻松地修改它以按一定数量的旋转或某些弧度旋转视图。

- (void) runSpinAnimationWithDuration:(CGFloat) duration;
{
    CABasicAnimation* rotationAnimation;
    rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
    rotationAnimation.toValue = [NSNumber numberWithFloat: M_PI * 2.0 /* full rotation*/ * rotations * duration ];
    rotationAnimation.duration = duration;
    rotationAnimation.cumulative = YES;
    rotationAnimation.repeatCount = 1.0; 
    rotationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];

    [myView.layer addAnimation:rotationAnimation forKey:@"rotationAnimation"];
}

Answer 2

任何轴上的360度旋转都会使视图保持不变。所以不要触摸图像，你很高兴！

Answer 3

您也可以使用动画功能（CAValueFunction）：

CABasicAnimation *rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform"];
rotationAnimation.duration = duration;
rotationAnimation.fromValue = [NSNumber numberWithFloat:0.0];
rotationAnimation.toValue = [NSNumber numberWithFloat:M_PI * 2.0];
rotationAnimation.valueFunction = [CAValueFunction functionWithName:kCAValueFunctionRotateZ];
rotationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];

[myView.layer addAnimation:rotationAnimation forKey:nil];

移动图像360度

3 个答案: