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Cannot combine CAKeyframeAnimations to scale and translate

I would like to scale and translate the layer transform at the same time, but only the translation animation is performed. Here is the wrong code ...

Here I am creating a scale animation using the key path for scale.y:

    self.mainImage.layer.anchorPoint = CGPointMake(0.5, 1);
    CAKeyframeAnimation *mainAnimationScale = [CAKeyframeAnimation animationWithKeyPath:@"transform.scale.y"];
    mainAnimationScale.duration             = 0.75;
    mainAnimationScale.repeatCount          = 0;
    mainAnimationScale.removedOnCompletion  = YES;
    mainAnimationScale.autoreverses         = NO;
    mainAnimationScale.fillMode             = kCAFillModeForwards;
    mainAnimationScale.values               = [NSArray arrayWithObjects:
                                          [NSNumber numberWithFloat:1.0],
                                          [NSNumber numberWithFloat:1.0],
                                          [NSNumber numberWithFloat:0.7],
                                          [NSNumber numberWithFloat:1.0],
                                          [NSNumber numberWithFloat:0.85],
                                          [NSNumber numberWithFloat:1.0],
                                           nil];
    mainAnimationScale.keyTimes             = [NSArray arrayWithObjects:
                                          [NSNumber numberWithFloat:0],
                                          [NSNumber numberWithFloat:0.65],
                                          [NSNumber numberWithFloat:0.72],
                                          [NSNumber numberWithFloat:0.84],
                                          [NSNumber numberWithFloat:0.91],
                                          [NSNumber numberWithFloat:1],
                                           nil];

Here I am creating a translation animation with the key for translating .y:

    CAKeyframeAnimation *mainAnimationTrans = [CAKeyframeAnimation animationWithKeyPath:@"transform.translation.y"];
    mainAnimationTrans.duration             = 0.75;
    mainAnimationTrans.repeatCount          = 0;
    mainAnimationTrans.removedOnCompletion  = YES;
    mainAnimationTrans.autoreverses         = NO;
    mainAnimationTrans.fillMode             = kCAFillModeForwards;
    mainAnimationTrans.values               = [NSArray arrayWithObjects:
                                         [NSNumber numberWithFloat:-250.0],
                                         [NSNumber numberWithFloat:-250.0],
                                         [NSNumber numberWithFloat:0],
                                           nil];
    mainAnimationTrans.keyTimes             = [NSArray arrayWithObjects:
                                          [NSNumber numberWithFloat:0],
                                          [NSNumber numberWithFloat:0.65],
                                          [NSNumber numberWithFloat:1],
                                           nil];

Here I group them and apply them to the UIView layer:

    CAAnimationGroup *theGroup = [CAAnimationGroup animation];
    theGroup.duration = 0.75;
    theGroup.repeatCount = 0;
    theGroup.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
    theGroup.animations = [NSArray arrayWithObjects:mainAnimationTrans, mainAnimationScale, nil];
    [self.mainImage.layer addAnimation:theGroup forKey:@"layerAnimation"];

At first I tried to add the animation directly to this layer, but that didn't work either:

    [self.mainImage.layer addAnimation:mainAnimationTrans forKey:@"transform.scale.y"];
    [self.mainImage.layer addAnimation:mainAnimationTrans forKey:@"transform.translation.y"];

I tried every line that I can think of for keyPath values, and I assume this has something to do with the fact that I am animating two aspects of the conversion, but I thought that using the group would fix that. Alas...

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2

. , , Matrix... , . Ack.

, , , , , . :

    self.mainImage.layer.anchorPoint = CGPointMake(0.3, 1.0);
    CAKeyframeAnimation *mainImageAnimation = [CAKeyframeAnimation animationWithKeyPath:@"transform"];
    mainImageAnimation.duration             = 0.75;
    mainImageAnimation.repeatCount          = 0;
    mainImageAnimation.removedOnCompletion  = NO;
    mainImageAnimation.autoreverses         = NO;
    mainImageAnimation.fillMode             = kCAFillModeForwards;
    mainImageAnimation.values               = [NSArray arrayWithObjects:
                                         [NSValue valueWithCATransform3D:CATransform3DScale(CATransform3DMakeTranslation(-8, -250, 0), 1, 1, 1)],
                                         [NSValue valueWithCATransform3D:CATransform3DScale(CATransform3DMakeTranslation(-8, 17, 0), 1, 1, 1)],
                                         [NSValue valueWithCATransform3D:CATransform3DScale(CATransform3DMakeTranslation(-8, 17, 0), 1.2, .8, 1)],
                                         [NSValue valueWithCATransform3D:CATransform3DScale(CATransform3DMakeTranslation(-8, 17, 0), .85, 1.15, 1)],
                                         [NSValue valueWithCATransform3D:CATransform3DScale(CATransform3DMakeTranslation(-8, 17, 0), 1.1, .9, 1)],
                                         [NSValue valueWithCATransform3D:CATransform3DScale(CATransform3DMakeTranslation(-8, 17, 0), 1, 1, 1)],
                                           nil];
    mainImageAnimation.keyTimes             = [NSArray arrayWithObjects:
                                          [NSNumber numberWithFloat:0],
                                          [NSNumber numberWithFloat:0.6],
                                          [NSNumber numberWithFloat:0.65],
                                          [NSNumber numberWithFloat:0.78],
                                          [NSNumber numberWithFloat:0.88],
                                          [NSNumber numberWithFloat:1],
                                           nil];
    mainImageAnimation.timingFunctions      = [NSArray arrayWithObjects:
                                         [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear],
                                         [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear],
                                         [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear],
                                         [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear],
                                         [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear],
                                         [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear],
                                           nil];
    [self.mainImage.layer addAnimation:mainImageAnimation forKey:@"transform"];

:

  • , CATransform3DMakeXXX CATransform3DXXX.
  • Matrix math : , , . , , .
  • anchorPoint . , ancor , , : 0,0, -8,17.

, !

+2

, , CAKeyFrameAnimations, .

CAKeyframeAnimation *wiggle = [CAKeyframeAnimation animationWithKeyPath:@"transform.rotation"];
wiggle.values   = @[ @0.0, @-0.15, @0.0, @0.15, @-0.15, @0.0];
wiggle.keyTimes = @[ @0.0, @0.2,  @0.4, @0.6, @0.8,  @1.0];
wiggle.duration = 0.5;

CAKeyframeAnimation *resize = [CAKeyframeAnimation animationWithKeyPath:@"transform.scale"];
resize.duration = 0.5;
resize.values = @[@1.0, @1.5, @1.0];
resize.keyTimes = @[@0.0, @0.5, @1.0];

, .

[self.layer addAnimation:wiggle forKey:kAnimationKey];
[self.layer addAnimation:resize forKey:kAnimationKey];

, , CAKeyFrameAnimations.

CAAnimationGroup *animGroup = [[CAAnimationGroup alloc] init];
animGroup.animations = @[wiggle, resize];
animGroup.duration = 0.5;

[self.layer addAnimation:animGroup forKey:kAnimationKey];
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