iOS-CATransform3D动画

声明属性

@property (nonatomic,strong) UIView *cicleView;

构建界面

- (void)transform3dAnimation{
    CGFloat width = self.view.bounds.size.width-100;
    _cicleView = [[UIView alloc]initWithFrame:CGRectMake(50, 80, width, width)];
    [self.view addSubview:_cicleView];
    _cicleView.clipsToBounds = YES;
    _cicleView.layer.cornerRadius = width/2;
    UIColor *color = [UIColor colorWithRed:arc4random()%256/255.0 green:arc4random()%256/255.0 blue:arc4random()%256/255.0 alpha:1.0];
    _cicleView.backgroundColor = [color colorWithAlphaComponent:1.0 ];
    UILabel *lab = [[UILabel alloc]init];
    lab.frame = CGRectMake((width-width/2)/2, (width-30)/2, width/2, 30);
    lab.font = [UIFont systemFontOfSize:30];
    lab.textAlignment = NSTextAlignmentCenter;
    lab.text = @"30000步";
    [_cicleView addSubview:lab];
    
    UISlider *slider = [[UISlider alloc]initWithFrame:CGRectMake(40, CGRectGetMaxY(_cicleView.frame)+30, 300, 30)];
    [self.view addSubview:slider];
    [slider addTarget:self action:@selector(changeValue:) forControlEvents:UIControlEventValueChanged];
}

添加动画

- (void)changeValue:(UISlider *)slider{
    
    CATransform3D t3d = CATransform3DIdentity;
    t3d = CATransform3DRotate(t3d, slider.value*M_PI_2, 1, 0, 0);
    t3d = CATransform3DScale(t3d, slider.value*0.15+1, 1, 1);
    _cicleView.layer.transform = t3d;
    _cicleView.alpha = 1-slider.value;
    
}

Paste_Image.png