CODEWITHSUNDEEP
objective-ciosipadcalayer
kartal
kartal

Reputation: 18096

can CALayer in IOS transform in z position

I have CAlayers in different z-depth and i want to transform them in z depth to see all layers i tried using this method:

CATransform3D transform = CATransform3DMakeTranslation(0, 0,-50 );
rootLayer.sublayerTransform = transform;

but no change and i tried using this method 

CATransform3D transform = CATransform3DRotate(trackball->baseTransform, 30, 30 , 0 , 0 );
rootLayer.sublayerTransform = transform;
for (CALayer* layer in rootLayer.sublayers)
{
    CABasicAnimation *theAnimation;
    theAnimation=[CABasicAnimation animationWithKeyPath:@"zPosition"];
    theAnimation.fromValue=[NSNumber numberWithFloat:-40]; // [NSNumber numberWithFloat:frandom(800, 400)];
    theAnimation.toValue=[NSNumber numberWithFloat:200]; // [NSNumber numberWithFloat:frandom(-300, -100)];
    theAnimation.duration=8;
    theAnimation.repeatCount = 1e100;
    [layer addAnimation:theAnimation forKey:@"zPosition"];
}

It moved in y direction

Note :Ipad orientation is landscape.

Upvotes: 2

Views: 1514

Answers (1)

voromax
voromax

Reputation: 3389

I'm afraid the code you supplied doesn't discover the problem

Suppose we have the following structure

-> rootLayer
    -> sublayer1
    -> sublayer2
    -> sublayer3
    ...
    -> sublayerN

Then to get visible the sublayer2 you will need to change zPosition to the sublayer1 but not to the rootLayer

Upvotes: 1

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