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Create Variable-pitch Helix (C#)

This example shows how to create a variable-pitch helix.

// Preconditions: Specified part document template exists.
// Postconditons: A variable-pitch helix is created.

using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System;

namespace AddVariablePitchHelixCSharp.csproj

partial class SolidWorksMacro

public void Main()
            ModelDoc2 swModel =
            SketchManager swSketchManager =
            SketchSegment swSketchSegment =
            FeatureManager swFeatureManager =
            Feature swFeature =
int errors = 0;
bool status = false;

// Create part document
            swModel = (ModelDoc2)swApp.NewDocument("C:\\Documents and Settings\\All Users\\Application Data\\SOLIDWORKS\\SOLIDWORKS 2011\\templates\\Part.prtdot", 0, 0, 0);
"Part1", false, ref errors);
            swModel = (ModelDoc2)swApp.ActiveDoc;
            swSketchManager = (SketchManager)swModel.SketchManager;
            swFeatureManager = (FeatureManager)swModel.FeatureManager;

// Sketch a circle
            swSketchSegment = (SketchSegment)swSketchManager.CreateCircle(0.0, 0.0, 0.0, 0.045549, 0.013926, 0.0);

// Create a variable-pitch helix using the sketched circle
            status = swFeatureManager.InsertVariablePitchHelix(false, true, 1, 4.712388980385);
            status = swFeatureManager.AddVariablePitchHelixFirstPitchAndDiameter(0.053, 0.05382625271268);
            status = swFeatureManager.AddVariablePitchHelixSegment(0.0265, 0.05382625271268, 0.5);
            status = swFeatureManager.AddVariablePitchHelixSegment(0.03975, 0.05382625271268, 0.75);
            status = swFeatureManager.AddVariablePitchHelixSegment(0.046375, 0.05382625271268, 0.875);
            status = swFeatureManager.AddVariablePitchHelixSegment(0.053, 0.05382625271268, 1);
            swFeature = (Feature)swFeatureManager.EndVariablePitchHelix();


/// <summary>
        /// The SldWorks swApp variable is pre-assigned for you.
        /// </summary>

SldWorks swApp;


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