sheet_metal/feature_recognizer/feature_recognizer.java

Refer to the Sheet Metal 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.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 != 1) {
            System.out.println("Usage: " + " <input_file>, where:");
            System.out.println("    <input_file> is a name of the file to be read");
            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");
 
        PartProcessor aPartProcessor = new PartProcessor();
        ModelElementUniqueVisitor aVisitor = new ModelElementUniqueVisitor(aPartProcessor);
        aModel.Accept(aVisitor);
    }
 
    static class PartProcessor extends ShapeProcessor
    {
         public PartProcessor()
         {
             myRecognizer = new SheetMetal_FeatureRecognizer();
         }
         public void ProcessSolid(Solid theSolid)
         {
             MTKBase_FeatureList aFeatureList = myRecognizer.Perform(theSolid);
             Report.PrintFeatures(aFeatureList);
         }
        public void ProcessShell(Shell theShell)
        {
            MTKBase_FeatureList aFeatureList = myRecognizer.Perform(theShell);
            Report.PrintFeatures(aFeatureList);
        }
        private SheetMetal_FeatureRecognizer myRecognizer;
    }
    static class Report {
        public static void PrintFeatures(MTKBase_FeatureList theFeatureList)
        {
            GroupByParameters(theFeatureList);
 
            //print
            Consumer<MTKBase_Feature> PrintFeatureParameters = theFeature ->
            {
                if (SheetMetal_Bead.CompareType(theFeature))
                {
                    SheetMetal_Bead aBead = SheetMetal_Bead.Cast(theFeature);
                    FeatureGroupManager.PrintFeatureParameter("depth", aBead.Depth(), "mm");
                }
                else if (SheetMetal_Cutout.CompareType(theFeature))
                {
                    SheetMetal_Cutout aCutout = SheetMetal_Cutout.Cast(theFeature);
                    FeatureGroupManager.PrintFeatureParameter("perimeter", aCutout.Perimeter(), "mm");
                }
                else if (SheetMetal_Louver.CompareType(theFeature))
                {
                    SheetMetal_Louver aLouver = SheetMetal_Louver.Cast(theFeature);
                    FeatureGroupManager.PrintFeatureParameter("depth", aLouver.Depth(), "mm");
                }
                else if (SheetMetal_Bridge.CompareType(theFeature))
                {
                    SheetMetal_Bridge aBridge = SheetMetal_Bridge.Cast(theFeature);
                    FeatureGroupManager.PrintFeatureParameter("length", aBridge.Length(), "mm");
                    FeatureGroupManager.PrintFeatureParameter("depth", aBridge.Depth(), "mm");
                }
                else if (SheetMetal_Hole.CompareType(theFeature))
                {
                    SheetMetal_Hole aHole = SheetMetal_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 (SheetMetal_Bend.CompareType(theFeature))
                {
                    SheetMetal_Bend aBend = SheetMetal_Bend.Cast(theFeature);
                    FeatureGroupManager.PrintFeatureParameter("radius", aBend.Radius(), "mm");
                    FeatureGroupManager.PrintFeatureParameter("angle", ToDegrees(aBend.Angle()), "deg");
                    FeatureGroupManager.PrintFeatureParameter("length", aBend.Length(), "mm");
                    FeatureGroupManager.PrintFeatureParameter("width", aBend.Width(), "mm");
                }
                else if (SheetMetal_Notch.CompareType(theFeature))
                {
                    SheetMetal_Notch aNotch = SheetMetal_Notch.Cast(theFeature);
                    FeatureGroupManager.PrintFeatureParameter("length", aNotch.Length(), "mm");
                    FeatureGroupManager.PrintFeatureParameter("width", aNotch.Width(), "mm");
                    if (SheetMetal_StraightNotch.CompareType(aNotch))
                    {
                        SheetMetal_StraightNotch aStraightNotch = SheetMetal_StraightNotch.Cast(aNotch);
                        FeatureGroupManager.PrintFeatureParameter ("corner fillet radius", aStraightNotch.CornerFilletRadius(), "mm");
                    }
                    else if (SheetMetal_VNotch.CompareType(aNotch))
                    {
                        SheetMetal_VNotch aVNotch = SheetMetal_VNotch.Cast(aNotch);
                        FeatureGroupManager.PrintFeatureParameter ("angle", ToDegrees(aVNotch.Angle()), "deg");
                    }
                }
                else if (SheetMetal_Tab.CompareType(theFeature))
                {
                    SheetMetal_Tab aTab = SheetMetal_Tab.Cast(theFeature);
                    FeatureGroupManager.PrintFeatureParameter("length", aTab.Length(), "mm");
                    FeatureGroupManager.PrintFeatureParameter("width", aTab.Width(), "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 (SheetMetal_Bead.CompareType(aFeature))
                {
                    myManager.AddFeature("Bead(s)", "Bead(s)", true, aFeature);
                }
                else if (SheetMetal_Cutout.CompareType(aFeature))
                {
                    myManager.AddFeature("Cutout(s)", "Cutout(s)", true, aFeature);
                }
                else if (SheetMetal_Louver.CompareType(aFeature))
                {
                    myManager.AddFeature("Louver(s)", "", true, aFeature);
                }
                else if (SheetMetal_Bridge.CompareType(aFeature))
                {
                    myManager.AddFeature("Bridge(s)", "Bridge(s)", true, aFeature);
                }
                else if (SheetMetal_Hole.CompareType(aFeature))
                {
                    SheetMetal_Hole aHole = SheetMetal_Hole.Cast(aFeature);
                    myManager.AddFeature(HoleName(aHole), "Hole(s)", true, aFeature);
                }
                else if (SheetMetal_Bend.CompareType(aFeature))
                {
                    SheetMetal_Bend aBend = SheetMetal_Bend.Cast(aFeature);
                    myManager.AddFeature(BendName(aBend), "Bend(s)", true, aFeature);
                }
                else if (SheetMetal_Notch.CompareType(aFeature))
                {
                    SheetMetal_Notch aNotch = SheetMetal_Notch.Cast(aFeature);
                    myManager.AddFeature(NotchName (aNotch), "Notch(es)", true, aFeature);
                }
                else if (SheetMetal_Tab.CompareType(aFeature))
                {
                    myManager.AddFeature("Tab(s)", "Tab(s)", true, aFeature);
                }
                else if (SheetMetal_CompoundBend.CompareType(aFeature))
                {
                    SheetMetal_CompoundBend aCompoundBend = SheetMetal_CompoundBend.Cast(aFeature);
                    GroupByParameters(aCompoundBend.FeatureList());
                }
            }
        }
 
        private static String HemTypeToString (SheetMetal_HemBendType theType)
        {
            switch (theType) {
            case SheetMetal_HBT_Flattened: return "Flattened Hem Bend(s)";
            case SheetMetal_HBT_Open:      return "Open Hem Bend(s)";
            case SheetMetal_HBT_Teardrop:  return "Teardrop Hem Bend(s)";
            case SheetMetal_HBT_Rope:      return "Rope Hem Bend(s)";
            case SheetMetal_HBT_Rolled:    return "Rolled Hem Bend(s)";
            default:
                break;
            }
            return "Hem Bend(s)";
        } 
 
        private static String BendName(SheetMetal_Bend theBend)
        {
            if (SheetMetal_HemBend.CompareType(theBend))
            {
                SheetMetal_HemBend aHemBend = SheetMetal_HemBend.Cast(theBend);
                return HemTypeToString(aHemBend.Type());
            }
            else if (SheetMetal_CurvedBend.CompareType(theBend))
            {
                return "Curved Bend(s)";
            }
            return "Bend(s)";
        }
 
        private static String HoleName(SheetMetal_Hole theHole)
        {
            if (SheetMetal_ComplexHole.CompareType(theHole))
            {
                return "Complex Hole(s)";
            }
            return "Hole(s)";
        }
 
        private static String NotchName(SheetMetal_Notch theNotch)
        {
            if (SheetMetal_StraightNotch.CompareType(theNotch))
            {
                return "Straight Notch(es)";
            }
            else if (SheetMetal_VNotch.CompareType(theNotch))
            {
                return "V Notch(es)";
            }
            return "Notch(es)";
        }
 
        private static double ToDegrees(double theAngleRad)
        {
            return theAngleRad * 180 / Math.PI;
        }
 
        private static FeatureGroupManager myManager = new FeatureGroupManager();
    }
}