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我想拖动图像的特定部分进行拉伸,如下所示。
我已经检查了苹果参考,因为这在 iOS 6 中可用。但我想在 iOS 5 中实现它CIBumpDistortionLinear。。
CIBumpDistortionLinear
请提供任何解决方案。
提前致谢