machining/feature_recognizer/feature_recognizer.java

Refer to the CNC Machining Feature Recognizer Example

feature_group.java

// ****************************************************************************
// $Id$
//
// Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
// Copyright (C) 2014-2025, CADEX. All rights reserved.
//
// This file is part of the Manufacturing Toolkit software.
//
// You may use this file under the terms of the BSD license as follows:
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// ****************************************************************************
 
import cadex.*;
 
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Map;
import java.util.TreeMap;
import java.util.function.Consumer;
 
class FeatureComparator implements Comparator<MTKBase_Feature>
{
    @Override
    public int compare(MTKBase_Feature theA, MTKBase_Feature theB)
    {
        MTKBase_FeatureComparator aComparator = new MTKBase_FeatureComparator();
        boolean anALessThanB = aComparator.Apply(theA, theB);
        if (anALessThanB)
        {
            return -1;
        }
        boolean aBLessThanA = aComparator.Apply(theB, theA);
        if (aBLessThanA)
        {
            return 1;
        }
        return 0;
    }
}
 
class Pair
{
    public Pair(double theFirst, double theSecond)
    {
        this.First = theFirst;
        this.Second = theSecond;
    }
 
    public String toString()
    {
        return String.format("%f x %f", First, Second);
    }
 
    public double First;
    public double Second;
}
 
class Dimension
{
    public Dimension(double theL, double theW, double theD)
    {
        this.L = theL;
        this.W = theW;
        this.D = theD;
    }
    public String toString()
    {
        return String.format("%f x %f x %f", L, W, D);
    }
    public double L;
    public double W;
    public double D;
}
 
class Direction
{
    public Direction(double theX, double theY, double theZ)
    {
        this.X = theX;
        this.Y = theY;
        this.Z = theZ;
    }
 
    public String toString()
    {
        return "(" + FormattedString(X) + ", " + FormattedString(Y) + ", " + FormattedString(Z) + ")";
    }
 
    private String FormattedString(double theValue)
    {
        DecimalFormat aDF = new DecimalFormat("0.00");
        return aDF.format(theValue);
    }
 
    public double X;
    public double Y;
    public double Z;
}
 
class FeatureMap extends TreeMap<MTKBase_Feature, Long>
{
    public FeatureMap()
    {
        super (new FeatureComparator());
    }
}
 
class FeatureGroupManager
{
    public FeatureGroupManager()
    {
        myGroups = new ArrayList<FeatureGroup>();
    }
 
    public void AddFeature(String theGroupName, String theSubgroupName, boolean theHasParameters, MTKBase_Feature theFeature)
    {
        //find or create
        int aRes = -1;
        for (int i = 0; i < myGroups.size(); ++i)
        {
            FeatureGroup aGroup = myGroups.get(i);
            if (aGroup.myName == theGroupName)
            {
                aRes = i;
                break;
            }
        }
        if (aRes == -1)
        {
            myGroups.add(new FeatureGroup(theGroupName, theSubgroupName, theHasParameters));
            aRes = myGroups.size() - 1;
        }
 
        //update
        FeatureGroup aGroup = myGroups.get(aRes);
        FeatureMap aSubgroups = aGroup.myFeatureSubgroups;
        if (aSubgroups.containsKey(theFeature))
        {
            aSubgroups.put(theFeature, aSubgroups.get (theFeature) + 1);
        }
        else
        {
            aSubgroups.put(theFeature, 1L);
        }
    }
 
    public void Print(String theFeatureType, Consumer<MTKBase_Feature> thePrintFeatureParameters)
    {
        Collections.sort(myGroups, new FeatureGroupComparator());
 
        long aTotalCount = 0;
        for (FeatureGroup aGroup : myGroups)
        {
            long aFeatureCount = aGroup.FeatureCount();
            aTotalCount += aFeatureCount;
 
            System.out.format("    %s: %d\n", aGroup.myName, aFeatureCount);
 
            if (!aGroup.myHasParameters)
            {
                continue;
            }
 
            String aSubgroupName = aGroup.mySubgroupName;
            for (Map.Entry<MTKBase_Feature, Long> aFeatureSubgroup : aGroup.myFeatureSubgroups.entrySet())
            {
                System.out.format("        %d %s with\n", aFeatureSubgroup.getValue(), aSubgroupName);
                thePrintFeatureParameters.accept(aFeatureSubgroup.getKey());
            }
        }
 
        System.out.format("\n    Total %s: %d\n", theFeatureType, aTotalCount);
    }
 
    public static <T> void PrintFeatureParameter(String theName, T theValue, String theUnits)
    {
        System.out.format("          %s: %s %s\n", theName, theValue, theUnits);
    }
 
    private class FeatureGroup
    {
        public FeatureGroup(String theName, String theSubgroupName, boolean theHasParameters)
        {
            myName = theName;
            mySubgroupName = theSubgroupName;
            myHasParameters = theHasParameters;
            myFeatureSubgroups = new FeatureMap();
        }
 
        public long FeatureCount()
        {
            long aCount = 0;
            for (Map.Entry<MTKBase_Feature, Long> aFeatureSubgroup : myFeatureSubgroups.entrySet())
            {
                aCount += aFeatureSubgroup.getValue();
            }
            return aCount;
        }
 
        public String myName;
        public String mySubgroupName;
        public boolean myHasParameters;
        public FeatureMap myFeatureSubgroups;
    }
 
    private class FeatureGroupComparator implements Comparator<FeatureGroup>
    {
        @Override
        public int compare(FeatureGroup theA, FeatureGroup theB)
        {
            String anAName = theA.myName;
            String aBName = theB.myName;
            if (anAName == aBName)
            {
                return 0;
            }
 
            FeatureMap anAFeatureSubgroups = theA.myFeatureSubgroups;
            FeatureMap aBFeatureSubgroups = theB.myFeatureSubgroups;
            if (anAFeatureSubgroups.isEmpty() || aBFeatureSubgroups.isEmpty())
            {
                return anAName.compareTo(aBName);
            }
 
            MTKBase_Feature anAFeature = anAFeatureSubgroups.firstKey();
            MTKBase_Feature aBFeature = aBFeatureSubgroups.firstKey();
 
            FeatureComparator aFeatureComparator = new FeatureComparator();
            return aFeatureComparator.compare(anAFeature, aBFeature);
        }
    }
 
    private ArrayList<FeatureGroup> myGroups;
}

shape_processor.java

// ****************************************************************************
// $Id$
//
// Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
// Copyright (C) 2014-2025, CADEX. All rights reserved.
//
// This file is part of the Manufacturing Toolkit software.
//
// You may use this file under the terms of the BSD license as follows:
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// ****************************************************************************
 
import cadex.*;
import cadex.ModelData.*;
import cadex.Collections.*;
 
abstract class ShapeProcessor extends ModelElementVoidVisitor
{
    public void Apply(Part thePart) {
        String aPartName = thePart.Name().IsEmpty() ? "noname" : thePart.Name().Data();
        BodyList aBodyList = thePart.Bodies();
        for (int i = 0; i < aBodyList.size(); ++i) {
            Body aBody = aBodyList.get(i);
 
            ShapeIterator aShapeIt = new ShapeIterator(aBody);
            while (aShapeIt.HasNext()) {
                Shape aShape = aShapeIt.Next();
 
                if (aShape.Type() == ShapeType.Solid) {
                    System.out.format("Part #%d [\"%s\"] - solid #%d has:\n", myPartIndex, aPartName, i);
                    ProcessSolid(Solid.Cast(aShape));
                } else if (aShape.Type() == ShapeType.Shell) {
                    System.out.format("Part #%d [\"%s\"] - shell #%d has:\n", myPartIndex, aPartName, i);
                    ProcessShell(Shell.Cast(aShape));
                }
            }
        }
 
        ++myPartIndex;
    }
 
    public abstract void ProcessSolid(Solid theSolid);
 
    public abstract void ProcessShell(Shell theShell);
 
    private long myPartIndex = 0;
}
 
abstract class SolidProcessor extends ModelElementVoidVisitor
{
    public void Apply(Part thePart) {
        String aPartName = thePart.Name().IsEmpty() ? "noname" : thePart.Name().Data();
        // Looking for a suitable body
        BodyList aBodyList = thePart.Bodies();
        for (int i = 0; i < aBodyList.size(); ++i) {
            Body aBody = aBodyList.get(i);
 
            ShapeIterator aShapeIt = new ShapeIterator(aBody);
            while (aShapeIt.HasNext()) {
                Shape aShape = aShapeIt.Next();
 
                if (aShape.Type() == ShapeType.Solid) {
                    System.out.format("Part #%d [\"%s\"] - solid #%d has:\n", myPartIndex, aPartName, i);
                    ProcessSolid(Solid.Cast(aShape));
                }
            }
        }
 
        ++myPartIndex;
    }
 
    public abstract void ProcessSolid(Solid theSolid);
 
    private long myPartIndex = 0;
}
 
abstract class SolidAndMeshProcessor extends ModelElementVoidVisitor
{
    public void Apply(Part thePart)
    {
        String aPartName = thePart.Name().IsEmpty() ? "noname" : thePart.Name().Data();
 
        BodyList aBodyList = thePart.Bodies();
        for (int i = 0; i < aBodyList.size(); ++i)
        {
            Body aBody = aBodyList.get(i);
 
            ShapeIterator aShapeIt = new ShapeIterator(aBody);
            while (aShapeIt.HasNext())
            {
                Shape aShape = aShapeIt.Next();
                if (aShape.Type() == ShapeType.Solid)
                {
                    System.out.format("Part #%d [\"%s\"] - solid #%d has:\n", myPartIndex, aPartName, i);
                    ProcessSolid(Solid.Cast(aShape), aPartName, i);
                }
            }
        }
 
        ++myPartIndex;
    }
 
    public abstract void ProcessSolid(Solid theSolid, String thePartName, long theShapeIndex);
 
    protected long myPartIndex = 0;
}

feature_recognizer.java

// ****************************************************************************
// $Id$
//
// Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
// Copyright (C) 2014-2025, CADEX. All rights reserved.
//
// This file is part of the Manufacturing Toolkit software.
//
// You may use this file under the terms of the BSD license as follows:
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// ****************************************************************************
 
import cadex.*;
import cadex.ModelData.*;
 
import java.util.HashMap;
import java.util.function.Consumer;
 
public class feature_recognizer {
    static {
        try {
            System.loadLibrary("CadExMTK");
        } catch (UnsatisfiedLinkError e) {
            System.err.println("Native code library failed to load.\n" + e);
            System.exit(1);
        }
    }
 
    public static void main(String[] args) {
        String aKey = MTKLicenseKey.Value();
 
        // Activate the license (the key must be defined in MTKLicenseKey.java)
        if (!LicenseManager.Activate(aKey)) {
            System.out.println("Failed to activate Manufacturing Toolkit license.");
            System.exit(1);
        }
 
        if (args.length != 2) {
            System.out.println("Usage: " + " <input_file> <operation>, where:");
            System.out.println("    <input_file> is a name of the file to be read");
            System.out.println("    <operation> is a name of desired machining operation");
            System.out.println("");
            PrintSupportedOperations();
            System.exit(1);
        }
 
        String aSource = args[0];
 
        Model aModel = new Model();
        ModelReader aReader = new ModelReader();
 
        // Reading the file
        if (!aReader.Read(new UTF16String(aSource), aModel)) {
            System.out.println("Failed to read the file " + aSource);
            System.exit(1);
        }
        System.out.println("Model: " + aModel.Name() + "\n");
 
        String anOperationStr = args[1];
        Machining_OperationType anOperation = OperationType(anOperationStr);
 
        if (anOperation == Machining_OperationType.Machining_OT_Undefined) {
            System.out.println("Unsupported operation - " + anOperationStr);
            System.out.println("Please use one of the following.");
            PrintSupportedOperations();
            System.exit(1);
        }
 
        PartProcessor aPartProcessor = new PartProcessor(anOperation);
        ModelElementUniqueVisitor aVisitor = new ModelElementUniqueVisitor(aPartProcessor);
        aModel.Accept(aVisitor);
    }
 
    private static void PrintSupportedOperations()
    {
        System.out.println("Supported operations:");
        System.out.println("    milling:\t CNC Machining Milling feature recognition");
        System.out.println("    turning:\t CNC Machining Lathe+Milling feature recognition");
    }
 
    private static Machining_OperationType OperationType(String theOperationStr)
    {
        HashMap<String, Machining_OperationType> aProcessMap = new HashMap<>();
        aProcessMap.put("milling", Machining_OperationType.Machining_OT_Milling);
        aProcessMap.put("turning", Machining_OperationType.Machining_OT_LatheMilling);
 
        Machining_OperationType aProcess = aProcessMap.getOrDefault(theOperationStr,
                                                                    Machining_OperationType.Machining_OT_Undefined);
 
        return aProcess;
    }
 
    static class PartProcessor extends SolidProcessor {
         public PartProcessor(Machining_OperationType theOperation) {
             myOperation = theOperation;
         }
 
         public void ProcessSolid(Solid theSolid) {
             Machining_FeatureRecognizerParameters aParam = new Machining_FeatureRecognizerParameters();
             aParam.SetOperation(myOperation);
             Machining_FeatureRecognizer aRecognizer = new Machining_FeatureRecognizer(aParam);
             MTKBase_FeatureList aFeatureList = aRecognizer.Perform(theSolid);
             Report.PrintFeatures(aFeatureList);
         }
 
         private  Machining_OperationType myOperation = Machining_OperationType.Machining_OT_Undefined;
    }
    static class Report {
        public static void PrintFeatures(MTKBase_FeatureList theFeatureList) {
            GroupByParameters(theFeatureList);
 
            Consumer<MTKBase_Feature> PrintFeatureParameters = (theFeature) -> {
                if (Machining_TurningFace.CompareType(theFeature)) {
                    Machining_TurningFace aTurningFace = Machining_TurningFace.Cast(theFeature);
                    FeatureGroupManager.PrintFeatureParameter("radius", aTurningFace.Radius(), "mm");
                }
                else if (Machining_Face.CompareType(theFeature)) {
                    //no parameters
                }
                else if (Machining_Countersink.CompareType(theFeature)) {
                    Machining_Countersink aCountersink = Machining_Countersink.Cast(theFeature);
                    cadex.Geom.Direction anAxis = aCountersink.Axis().Axis();
                    Direction aDir = new Direction(anAxis.X(), anAxis.Y(), anAxis.Z());
                    FeatureGroupManager.PrintFeatureParameter("radius", aCountersink.Radius(), "mm");
                    FeatureGroupManager.PrintFeatureParameter("depth", aCountersink.Depth(), "mm");
                    FeatureGroupManager.PrintFeatureParameter("axis", aDir, "");
                }
                else if (Machining_Hole.CompareType(theFeature)) {
                    Machining_Hole aHole = Machining_Hole.Cast(theFeature);
                    cadex.Geom.Direction anAxis = aHole.Axis().Axis();
                    Direction aDir = new Direction(anAxis.X(), anAxis.Y(), anAxis.Z());
                    FeatureGroupManager.PrintFeatureParameter("radius", aHole.Radius(), "mm");
                    FeatureGroupManager.PrintFeatureParameter("depth", aHole.Depth(), "mm");
                    FeatureGroupManager.PrintFeatureParameter("axis", aDir, "");
                }
                else if (Machining_SteppedHole.CompareType(theFeature)) {
                    Machining_SteppedHole aSteppedHole = Machining_SteppedHole.Cast(theFeature);
                    GroupByParameters(aSteppedHole.FeatureList());
                }
                else if (Machining_Pocket.CompareType(theFeature)) {
                    Machining_Pocket aPocket = Machining_Pocket.Cast(theFeature);
                    cadex.Geom.Direction anAxis = aPocket.Axis().Direction();
                    Direction aDir = new Direction(anAxis.X(), anAxis.Y(), anAxis.Z());
                    FeatureGroupManager.PrintFeatureParameter("length", aPocket.Length(), "mm");
                    FeatureGroupManager.PrintFeatureParameter("width", aPocket.Width(), "mm");
                    FeatureGroupManager.PrintFeatureParameter("depth", aPocket.Depth(), "mm");
                    FeatureGroupManager.PrintFeatureParameter("axis", aDir, "");
                }
                else if (MTKBase_Boss.CompareType(theFeature)) {
                    MTKBase_Boss aBoss = MTKBase_Boss.Cast(theFeature);
                    FeatureGroupManager.PrintFeatureParameter("length", aBoss.Length(), "mm");
                    FeatureGroupManager.PrintFeatureParameter("width",  aBoss.Width(),  "mm");
                    FeatureGroupManager.PrintFeatureParameter("height", aBoss.Height(), "mm");
                }
            };
            myManager.Print("features", PrintFeatureParameters);
        }
 
        private static void GroupByParameters(MTKBase_FeatureList theFeatures) {
            //group by parameters to provide more compact information about features
            for (long i = 0; i < theFeatures.Size(); ++i) {
                MTKBase_Feature aFeature = theFeatures.Feature(i);
                if (Machining_TurningFace.CompareType(aFeature)) {
                    Machining_TurningFace aTurningFace = Machining_TurningFace.Cast(aFeature);
                    myManager.AddFeature(FaceTypeToString(aTurningFace.Type()), "Turning Face(s)", true, aFeature);
                }
                else if (Machining_Face.CompareType(aFeature)) {
                    Machining_Face aFace = Machining_Face.Cast(aFeature);
                    myManager.AddFeature(FaceTypeToString(aFace.Type()), "", false, aFeature);
                }
                else if (Machining_Countersink.CompareType(aFeature)) {
                    myManager.AddFeature("Countersink(s)", "Countersink(s)", true, aFeature);
                }
                else if (Machining_Hole.CompareType(aFeature)) {
                    Machining_Hole aHole = Machining_Hole.Cast(aFeature);
                    myManager.AddFeature(HoleTypeToString(aHole.Type()), "Hole(s)", true, aFeature);
                }
                else if (Machining_SteppedHole.CompareType(aFeature)) {
                    Machining_SteppedHole aSteppedHole = Machining_SteppedHole.Cast(aFeature);
                    GroupByParameters(aSteppedHole.FeatureList());
                }
                else if (Machining_Pocket.CompareType(aFeature)) {
                    Machining_Pocket aPocket = Machining_Pocket.Cast(aFeature);
                    myManager.AddFeature(PocketTypeToString(aPocket.Type()), "", true, aFeature);
                }
                else if (MTKBase_Boss.CompareType(aFeature)) {
                    myManager.AddFeature("Boss(es)", "Boss(es)", true, aFeature);
                }
            }
        }
 
        private static String FaceTypeToString (Machining_FaceType theType) {
            switch (theType) {
                case Machining_FT_FlatFaceMilled:           return "Flat Face Milled Face(s)";
                case Machining_FT_FlatSideMilled:           return "Flat Side Milled Face(s)";
                case Machining_FT_CurvedMilled:             return "Curved Milled Face(s)";
                case Machining_FT_CircularMilled:           return "Circular Milled Face(s)";
                case Machining_FT_Deburr:                   return "Deburr Face(s)";
                case Machining_FT_ConvexProfileEdgeMilling: return "Convex Profile Edge Milling Face(s)";
                case Machining_FT_ConcaveFilletEdgeMilling: return "Concave Fillet Edge Milling Face(s)";
                case Machining_FT_FlatMilled:               return "Flat Milled Face(s)";
                case Machining_FT_TurnDiameter:             return "Turn Diameter Face(s)";
                case Machining_FT_TurnForm:                 return "Turn Form Face(s)";
                case Machining_FT_TurnFace:                 return "Turn Face Face(s)";
                case Machining_FT_Bore:                     return "Bore Face(s)";
                default:
                    break;
            }
            return "Face(s)";
        }
 
        private static String PocketTypeToString (Machining_PocketType theType) {
            switch (theType) {
                case Machining_PT_Closed:   return "Closed Pocket(s)";
                case Machining_PT_Open:    return "Open Pocket(s)";
                case Machining_PT_Through: return "Through Pocket(s)";
                default:
                    break;
            }
            return "Pocket(s)";
        }
 
        private static String HoleTypeToString (Machining_HoleType theType) {
            switch (theType) {
                case Machining_HT_Through:    return "Through Hole(s)";
                case Machining_HT_FlatBottom: return "Flat Bottom Hole(s)";
                case Machining_HT_Blind:      return "Blind Hole(s)";
                case Machining_HT_Partial:    return "Partial Hole(s)";
                default:
                    break;
            }
            return "Hole(s)";
        }
 
        private static FeatureGroupManager myManager = new FeatureGroupManager();
    }
}