gistfile1.txt

- (void)squareToCircleToRoundedRectangle {
//    self.circleView.layer.masksToBounds = YES;
//    self.circleView.layer.position = self.circleView.frame.origin;
//    self.circleView.layer.anchorPoint = CGPointMake(0.0f, 0.0f);
//    self.circleView.layer.cornerRadius = MIN(self.circleView.frame.size.width, self.circleView.frame.size.height) / 2.0f;
    
    CABasicAnimation *anim = [CABasicAnimation animationWithKeyPath:@"cornerRadius"];
    anim.removedOnCompletion = NO;
    anim.fromValue = @(self.circleView.layer.cornerRadius);
    anim.toValue = @(kKruMainMaxWidthCircleView / 2);
    anim.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
    anim.duration = kKruMainAnimationDuration;
    anim.beginTime = 0.0f;
    anim.autoreverses = NO;
    
    CGRect oldBounds = self.circleView.layer.bounds;
    CGRect newBounds = oldBounds;
    newBounds.size = CGSizeMake(kKruMainMaxWidthCircleView, kKruMainMaxWidthCircleView);
    
    
    CABasicAnimation *anim2 = [CABasicAnimation animationWithKeyPath:@"bounds"];
    anim2.removedOnCompletion = NO;
    anim2.fromValue = [NSValue valueWithCGRect:oldBounds];
    anim2.toValue = [NSValue valueWithCGRect:newBounds];
    anim2.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
    anim2.duration = kKruMainAnimationDuration;
    anim2.beginTime = 0.0f;
    
//    CABasicAnimation *anim3 = [CABasicAnimation animationWithKeyPath:@"bounds.size.height"];
//    anim3.removedOnCompletion = NO;
//    anim3.fromValue = @(20);
//    anim3.toValue = @(kKruMainMaxWidthCircleView);
//    anim3.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
//    anim3.duration = kKruMainAnimationDuration;
//    anim3.beginTime = 0.0f;
//
    
    CAAnimationGroup *group = [CAAnimationGroup animation];
    group.animations = @[anim, anim2];
    group.duration = kKruMainAnimationDuration;
    group.beginTime = 0.0f;
    group.removedOnCompletion = NO;
    group.repeatCount = INFINITY;
    
//    [self.circleView.layer addAnimation:anim forKey:@"cornerRadius"];
    [self.circleView.layer addAnimation:anim forKey:@"animation"];
}