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Create Imported Surface Body from Sketch Example (C#)

This example shows how to create an imported body surface from a sketch.

 

'--------------------------------------

'

' Preconditions: A circular sketch is selected.

'

' Postconditions: A cylindrical imported surface body is created.

'

'--------------------------------------

using System;

namespace BodyFromSketchProfile

{

/// <summary>

/// Summary description for Class1

/// </summary>

class Application

{

static double ExtrudeDepth = 0.1;

/// <summary>

/// Main entry point for the application

/// </summary>

[STAThread]

static void Main(string[] args)

{

bool bRetval;

SldWorks.ISldWorks swApp;

SldWorks.IModelDoc2 swDoc;

SldWorks.IPartDoc swPart;

SldWorks.IBody2 swBody;

SldWorks.ISketch swSketch;

SldWorks.IFeature swFeature;

 

swApp = new SldWorks.SldWorksClass();

swDoc = swApp.IActiveDoc2;

swPart = (SldWorks.IPartDoc) swDoc;

 

SldWorks.ISelectionMgr swSelMgr;

swSelMgr = swDoc.ISelectionManager;

swFeature = (SldWorks.IFeature) swSelMgr.GetSelectedObject6(1,0);

swSketch = (SldWorks.ISketch) swFeature.GetSpecificFeature2();

if (swSketch != null)

{

SldWorks.IEnumSketchSegments swSegs;

swSegs = swSketch.IEnumSketchSegments();

 

int nFetched = 0;

int segcount = 0;

SldWorks.SketchSegment swSeg;

System.Collections.ArrayList ProfileSegs = new System.Collections.ArrayList();

System.Collections.ArrayList BodySurfaces = new System.Collections.ArrayList();

SldWorks.ISurface swSurface;

 

swSegs.Next(1, out swSeg, ref nFetched);

while (nFetched != 0)

{

if (swSeg.ConstructionGeometry == false)

{

swBody = swPart.ICreateNewBody2();

 

segcount++;

SldWorks.ISketchPoint swStartPt;

SldWorks.ISketchPoint swEndPt;

SldWorks.ICurve swCurve = null;

 

switch (swSeg.GetType())

{

case (int)SwConst.swSketchSegments_e.swSketchARC:

{

SldWorks.ISketchArc swSkArc;

swSkArc = (SldWorks.ISketchArc) swSeg;

 

SldWorks.ISketchPoint swCenterPt;

double [] normal;

double radius;

 

swCenterPt = swSkArc.IGetCenterPoint2();

swStartPt = swSkArc.IGetStartPoint2();

swEndPt = swSkArc.IGetEndPoint2();

normal = (double[])swSkArc.GetNormalVector();

radius = swSkArc.GetRadius();

 

double []center = new double[3];

double []startpt = new double[3];

double []endpt = new double[3];

 

center[0] = swCenterPt.X;

center[1] = swCenterPt.Y;

center[2] = swCenterPt.Z;

startpt[0] = swStartPt.X;

startpt[1] = swStartPt.Y;

startpt[2] = swStartPt.Z;

endpt[0] = swEndPt.X;

endpt[1] = swEndPt.Y;

endpt[2] = swEndPt.Z;

 

swCurve = swBody.IAddProfileArc(center, normal, radius, startpt, endpt);

break;

}

case (int)SwConst.swSketchSegments_e.swSketchLINE:

{

SldWorks.ISketchLine swSkLine;

swSkLine = (SldWorks.ISketchLine) swSeg;

 

swStartPt = swSkLine.IGetStartPoint2();

swEndPt = swSkLine.IGetEndPoint2();

 

double []root = new double[3];

double []dir = new double[3];

 

root[0] = swStartPt.X;

root[1] = swStartPt.Y;

root[2] = swStartPt.Z;

 

dir[0] = swEndPt.X - root[0];

dir[1] = swEndPt.Y - root[1];

dir[2] = swEndPt.Z - root[2];

 

swCurve = swBody.IAddProfileLine(root, dir);

 

break;

}

default:

System.Diagnostics.Debug.Assert(false, "Unhandled sketch segment type");

break;

}

// Have the curve and the start and end points

// Create the side of the extrusion

 

ProfileSegment curSeg = new ProfileSegment(swSeg, swCurve);

double []surfeval;

double []extruAxis = new double[3];

 

extruAxis[0] = 0.0;

extruAxis[1] = 0.0;

extruAxis[2] = 1.0;

 

ProfileSegs.Add(curSeg);

 

swSurface = swBody.ICreateExtrusionSurface((SldWorks.Curve)swCurve, extruAxis);

 

//Create a trimming loop for the surface

int nCurves = 4;

int []Order = {2, 2, 2, 2};

int []Dim = {2, 2, 2, 2};

int []Periodic = {0, 0, 0, 0};

int []nKnots = {4, 4, 4, 4};

int []nCtrlPts = {2, 2, 2, 2};

double []Knots = {0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1};

double []CtrlPts = new double[16];

 

double x = curSeg.iStartPt.X;

double y = curSeg.iStartPt.Y;

double z = curSeg.iStartPt.Z;

surfeval = (double[])swSurface.GetClosestPointOn(x, y, z);

CtrlPts[0] = surfeval[3];

CtrlPts[1] = surfeval[4];

CtrlPts[14] = surfeval[3];

CtrlPts[15] = surfeval[4];

 

x = curSeg.iEndPt.X;

y = curSeg.iEndPt.Y;

z = curSeg.iEndPt.Z;

surfeval = (double[])swSurface.GetClosestPointOn(x, y, z);

CtrlPts[2] = surfeval[3];

CtrlPts[3] = surfeval[4];

CtrlPts[4] = surfeval[3];

CtrlPts[5] = surfeval[4];

 

x = curSeg.iEndPt.X;

y = curSeg.iEndPt.Y;

z = curSeg.iEndPt.Z;

surfeval = (double[])swSurface.GetClosestPointOn(x, y, z + ExtrudeDepth);

CtrlPts[6] = surfeval[3];

CtrlPts[7] = surfeval[4];

CtrlPts[8] = surfeval[3];

CtrlPts[9] = surfeval[4];

 

x = curSeg.iStartPt.X;

y = curSeg.iStartPt.Y;

z = curSeg.iStartPt.Z;

surfeval = (double[])swSurface.GetClosestPointOn(x, y, z + ExtrudeDepth);

CtrlPts[10] = surfeval[3];

CtrlPts[11] = surfeval[4];

CtrlPts[12] = surfeval[3];

CtrlPts[13] = surfeval[4];

 

swSurface.AddTrimmingLoop(nCurves, Order, Dim, Periodic, nKnots, nCtrlPts, Knots, CtrlPts);

 

bRetval = swBody.CreateTrimmedSurface();

bRetval = swBody.CreateBodyFromSurfaces();

}

swSegs.Next(1, out swSeg, ref nFetched);

}

}

}// Main

}// Application

class ProfileSegment

{

public SldWorks.ISketchSegment iSkSeg;

public SldWorks.ICurve iCurve;

public SldWorks.ISketchPoint iStartPt;

public SldWorks.ISketchPoint iEndPt;

public ProfileSegment(SldWorks.ISketchSegment swSkSeg, SldWorks.ICurve swCurve)

{

iSkSeg = swSkSeg;

iCurve = swCurve;

 

switch (iSkSeg.GetType())

{

case (int)SwConst.swSketchSegments_e.swSketchARC:

{

SldWorks.ISketchArc swSkArc;

swSkArc = (SldWorks.ISketchArc) iSkSeg;

 

iStartPt = swSkArc.IGetStartPoint2();

iEndPt = swSkArc.IGetEndPoint2();

break;

}

 

case (int)SwConst.swSketchSegments_e.swSketchLINE:

{

SldWorks.ISketchLine swSkLine;

swSkLine = (SldWorks.ISketchLine) iSkSeg;

 

iStartPt = swSkLine.IGetStartPoint2();

iEndPt = swSkLine.IGetEndPoint2();

 

break;

}

default:

System.Diagnostics.Debug.Assert(false, "Unhandled sketch segment type");

break;

}

}

 }

class Vector

{

private

double []coords = new double[3];

 

public Vector(double x, double y, double z)

{

coords[0] = x; coords[1] = y; coords[2] = z;

}

}

}// BodyFromSketchProfile



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