File list (Check if you may need any files):
HandWriting
...........\AWT
...........\...\ChoiceLabelPanel.java
...........\...\ColorChoice.java
...........\...\ScrollbarLabelPanel.java
...........\...\ScrollbarTextFieldPanel.java
...........\Bitmap
...........\......\BitmapClass.java
...........\......\Template.java
...........\CRoutines
...........\.........\jni.h
...........\.........\linearAlgebra.c
...........\.........\LinearAlgebra_VektorDD.h
...........\.........\MakefilePrincipalCurves
...........\.........\utilities.c
...........\.........\Utilities_MyMath.h
...........\Debug
...........\.....\Debug.java
...........\.....\DebugEvent.java
...........\Internet
...........\........\DownLoadDialog.java
...........\........\DownLoadFile.java
...........\........\EmailFile.java
...........\........\UpLoadFile.java
...........\........\UpLoadFileOffline.java
...........\LinearAlgebra
...........\.............\CovarianceMatrix.java
...........\.............\CovarianceMatrix2D.java
...........\.............\CovarianceMatrixDD.java
...........\.............\Curve.java
...........\.............\Graph.java
...........\.............\GraphAbstract.java
...........\.............\Line.java
...........\.............\LineAbstract.java
...........\.............\LineObject.java
...........\.............\LineSegment.java
...........\.............\LineSegmentAbstract.java
...........\.............\LineSegmentObject.java
...........\.............\Loadable.java
...........\.............\OnlineSampleStatistics.java
...........\.............\OnlineSampleStatisticsDegreeOne.java
...........\.............\OnlineSampleStatisticsDegreeTwo.java
...........\.............\OnlineSampleStatisticsWeight.java
...........\.............\Sample.java
...........\.............\Sample2D.java
...........\.............\Sample2DWeighted.java
...........\.............\SampleDD.java
...........\.............\SampleDDWeighted.java
...........\.............\SampleLoadable.java
...........\.............\SampleWithOnlineStatistics.java
...........\.............\SampleWithOnlineStatisticsDegreeTwo.java
...........\.............\Vektor.java
...........\.............\Vektor2D.java
...........\.............\Vektor2DWeighted.java
...........\.............\VektorDD.java
...........\.............\VektorDDLabeled.java
...........\.............\VektorDDWeighted.java
...........\.............\VektorObject.java
...........\.............\Weighted.java
...........\Optimize
...........\........\Optimizable.java
...........\........\Optimizer.java
...........\Paintable
...........\.........\DataCanvas.java
...........\.........\DataPostScriptDocument.java
...........\.........\DataPostScriptSetupPanel.java
...........\.........\PaintableInterface.java
...........\.........\PaintableObject.java
...........\.........\PaintableWithChangingIntensity.java
...........\.........\ProjectionPlane.java
...........\.........\ProjectionPlaneSettingDialog.java
...........\.........\Recallable.java
...........\PostScript
...........\..........\PostScriptDocument.java
...........\..........\PostScriptSetupDialog.java
...........\PrincipalCurve
...........\..............\Globals.java
...........\..............\GlobalsSkeletonization.java
...........\..............\PrincipalCurveAlgorithm.java
...........\..............\PrincipalCurveAlgorithmForSkeletonization.java
...........\..............\PrincipalCurveAlgorithmThread.java
...........\..............\PrincipalCurveAlgorithmThreadForSkeletonization.java
...........\..............\PrincipalCurveClass.java
...........\..............\PrincipalCurveOfTemplate.java
...........\..............\PrincipalCurveSampleVektor.java
...........\..............\SetOfCurves.java
...........\..............\SkeletonizationCanvas.java
...........\..............\SkeletonizationGUI.java
...........\..............\Vertex
...........\..............\......\CornerVertex.java
...........\..............\......\DummyVertex.java
...........\..............\......\Elements
...........\..............\......\........\Edge.java
...........\..............\......\........\EdgeDirection.java
...........\..............\......