Commissioned to write functions with a small animation

Test
....\.DS_Store
__MACOSX
........\Test
........\....\._.DS_Store
Test\Classes
....\.......\A.h
__MACOSX\Test\Classes
........\....\.......\._A.h
Test\Classes\A.m
__MACOSX\Test\Classes\._A.m
Test\Classes\A.xib
....\.......\B.h
__MACOSX\Test\Classes\._B.h
Test\Classes\B.m
__MACOSX\Test\Classes\._B.m
Test\Classes\B.xib
....\.......\TestAppDelegate.h
__MACOSX\Test\Classes\._TestAppDelegate.h
Test\Classes\TestAppDelegate.m
__MACOSX\Test\Classes\._TestAppDelegate.m
Test\Classes\TouchImage.h
__MACOSX\Test\Classes\._TouchImage.h
Test\Classes\TouchImage.m
__MACOSX\Test\Classes\._TouchImage.m
Test\Classes\delegate.h
__MACOSX\Test\Classes\._delegate.h
Test\MainWindow.xib
....\Test-Info.plist
....\Test.xcodeproj
....\..............\liuliu.mode1v3
....\..............\liuliu.pbxuser
....\..............\project.pbxproj
....\Test_Prefix.pch
....\main.m
....\pin.png

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