Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
383 views
in Technique[技术] by (71.8m points)

iphone - Applying multiple transforms to a UIView / CALayer

Is there any problem applying multiple transforms to a UIView and it's corresponding CALayer?

Specifically, can you "mix and match" CATransform3Ds with CGAffineTransforms without running into issues?

Also are there any problems with setting some transforms directly while animating another transform change simultaneously?

Are there any "rules" for how this should be done, or any design patterns for this?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

I realize this doesn't answer the question entirely (or come close), but if you're only working with CGAffineTransforms you can use CGAffineTransformConcat() to combine multiple transforms.

This will work just fine when some transforms are animated and others are not, as long as you concat the transformations properly. I don't know how this works when you're also doing layer transforms.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...