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CoreGraphicsとCoreAnimationの役割

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CoreGraphics

Quartz技術(Apple提供の描画エンジン)を使った描画のためのフレームワーク

CoreAnimation

Core Animation自体は、描画テクノロジーではない。
作成したコンテンツを操作したり、表示したりするためのテクノロジー。

参考

https://ja.wikipedia.org/wiki/Quartz

https://developer.apple.com/documentation/coregraphics

https://developer.apple.com/jp/documentation/DrawingPrintingiOS.pdf

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