android multi-touch rotation scaling function

Sample12_4\.classpath
..........\.project
..........\.settings\org.eclipse.jdt.core.prefs
..........\AndroidManifest.xml
..........\bin\AndroidManifest.xml
..........\...\classes\com\bn\ex12d\BNPoint.class
..........\...\.......\...\..\.....\BuildConfig.class
..........\...\.......\...\..\.....\MySurfaceView.class
..........\...\.......\...\..\.....\R$attr.class
..........\...\.......\...\..\.....\R$drawable.class
..........\...\.......\...\..\.....\R$layout.class
..........\...\.......\...\..\.....\R$string.class
..........\...\.......\...\..\.....\R.class
..........\...\.......\...\..\.....\Sample12_4_Activity.class
..........\...\classes.dex
..........\...\dexedLibs\annotations-a3f85c4eddec21fd1f1868b9d5ac734b.jar
..........\...\res\drawable-hdpi\icon.png
..........\...\...\.........ldpi\icon.png
..........\...\...\.........mdpi\icon.png
..........\...\resources.ap_
..........\...\Sample12_4_Activity.apk
..........\gen\com\bn\ex12d\BuildConfig.java
..........\...\...\..\.....\R.java
..........\project.properties
..........\res\drawable-hdpi\icon.png
..........\...\.........ldpi\icon.png
..........\...\.........mdpi\icon.png
..........\...\.............\person.jpg
..........\...\layout\main.xml
..........\...\values\strings.xml
..........\src\com\bn\ex12d\BNPoint.java
..........\...\...\..\.....\MySurfaceView.java
..........\...\...\..\.....\Sample12_4_Activity.java
..........\bin\classes\com\bn\ex12d
..........\...\.......\...\bn
..........\gen\com\bn\ex12d
..........\src\com\bn\ex12d
..........\bin\classes\com
..........\...\res\drawable-hdpi
..........\...\...\drawable-ldpi
..........\...\...\drawable-mdpi
..........\gen\com\bn
..........\src\com\bn
..........\bin\classes
..........\...\dexedLibs
..........\...\res
..........\gen\com
..........\res\drawable-hdpi
..........\...\drawable-ldpi
..........\...\drawable-mdpi
..........\...\drawable-xhdpi
..........\...\layout
..........\...\values
..........\src\com
..........\.settings
..........\assets
..........\bin
..........\gen
..........\res
..........\src
Sample12_4

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