Extrude through the sketch

[supriya_chaugule]

Hii....I have one step file which include cube with hole and I want to modify my hole  like the water drop shape.I have tried it through two methods.

Method 1 :

PartDocument part = (PartDocument)mApplication.ActiveDocument;
PartComponentDefinition partDef = part.ComponentDefinition;
SelectSet oSS = part.SelectSet;
oSS.Clear();
HighlightSet oHSet = part.CreateHighlightSet();

Face face = partDef.SurfaceBodies[1].Faces[7];

PlanarSketch sketch = partDef.Sketches.Add(partDef.WorkPlanes[3]);
Inventor.TransientGeometry tg = mApplication.TransientGeometry;

Edge test = face.Edges[1];
Vertex v1 = test.StartVertex;

Cylinder cylinder = face.Geometry as Cylinder;
double radius = cylinder.Radius;

double angle = Math.PI * 50 / 180; //49.52

Point2d p1 = tg.CreatePoint2d(v1.Point.X -radius, v1.Point.Y);

double x1 = p1.X+ radius * Math.Cos((Math.PI / 2) - angle);
double y1 = p1.Y+ radius * Math.Sin((Math.PI / 2) - angle);

double x2 = p1.X+radius * Math.Cos((Math.PI /2)+angle);
double y2 = p1.Y +radius * Math.Sin((Math.PI / 2) + angle);

double distance = radius / (Math.Cos(angle));
double x3 = p1.X;
double y3 = p1.Y + distance ;

Inventor.SketchLines lines = sketch.SketchLines;

Inventor.SketchLine line1 = lines.AddByTwoPoints(tg.CreatePoint2d(x1, y1), tg.CreatePoint2d(x3, y3));
Inventor.SketchLine line2 = lines.AddByTwoPoints(tg.CreatePoint2d(x3, y3), tg.CreatePoint2d(x2, y2));
Inventor.SketchLine line3 = lines.AddByTwoPoints(tg.CreatePoint2d(x2, y2), tg.CreatePoint2d(x1, y1));

Profile profile = sketch.Profiles.AddForSolid();
ExtrudeDefinition extrudeDef = partDef.Features.ExtrudeFeatures.CreateExtrudeDefinition(profile, PartFeatureOperationEnum.kCutOperation);
extrudeDef.SetDistanceExtent(1, PartFeatureExtentDirectionEnum.kPositiveExtentDirection);
ExtrudeFeature extrude = (ExtrudeFeature)partDef.Features.ExtrudeFeatures.Add(extrudeDef);

Here I got error like this

Method 2:

PartDocument part = (PartDocument)mApplication.ActiveDocument;
PartComponentDefinition partDef = part.ComponentDefinition;
SelectSet oSS = part.SelectSet;
oSS.Clear();
HighlightSet oHSet = part.CreateHighlightSet();

Face face = partDef.SurfaceBodies[1].Faces[7];

PlanarSketch sketch = partDef.Sketches.Add(partDef.WorkPlanes[3]);
Inventor.TransientGeometry tg = mApplication.TransientGeometry;

Edge test = face.Edges[1];
Vertex v1 = test.StartVertex;

Cylinder cylinder = face.Geometry as Cylinder;
double radius = cylinder.Radius;

double angle = Math.PI * 50 / 180; //49.52

Point2d p1 = tg.CreatePoint2d(v1.Point.X -radius, v1.Point.Y);
double x1 = p1.X+ radius * Math.Cos((Math.PI / 2) - angle);
double y1 = p1.Y+ radius * Math.Sin((Math.PI / 2) - angle);

double x2 = p1.X+radius * Math.Cos((Math.PI /2)+angle);
double y2 = p1.Y +radius * Math.Sin((Math.PI / 2) + angle);

double distance = radius / (Math.Cos(angle));
double x3 = p1.X;
double y3 = p1.Y + distance;

Inventor.SketchLines lines = sketch.SketchLines;

Inventor.SketchLine line1 = lines.AddByTwoPoints(tg.CreatePoint2d(x1, y1), tg.CreatePoint2d(x3, y3));
Inventor.SketchLine line2 = lines.AddByTwoPoints(tg.CreatePoint2d(x3, y3), tg.CreatePoint2d(x2, y2));
Inventor.SketchLine line3 = lines.AddByTwoPoints(tg.CreatePoint2d(x2, y2), tg.CreatePoint2d(x1, y1));

ObjectCollection oc = mApplication.TransientObjects.CreateObjectCollection(lines);

Inventor.Path ob = partDef.Features.CreateSpecifiedPath(oc);
SurfaceBody SrfBod = partDef.SurfaceBodies[1];
SplitFeature oSplitFeature = partDef.Features.SplitFeatures.TrimSolid(ob, SrfBod);

Here I got exception like this

And I want the output like this

Can anyone suggest the sample code to do this.

[talha.tufan523TD]

I think Inventor is not considering the lines for extrusion as closed. Even though it may seem mathematically correct, I believe it leads to an error. I'm not completely sure, but I think adding this line to your code by merging the points might solve the issue. After the sketching process is complete, you can call this function for the lines.

private void MergeSketchPoints(Inventor.SketchPoint sketchPoint1, Inventor.SketchPoint sketchPoint2)
{
    if (!sketchPoint1.Geometry.IsEqualTo(sketchPoint2.Geometry))
    {
        sketchPoint1.Merge(sketchPoint2);
    }
}

[NemKumar]

@talha.tufan523TD  unfortunately it is not working, but is there any way where we check if our sketch is closed loop ? 

[talha.tufan523TD]

Yeah, at start forget  to extrude  just draw  sketch with this codes first part then you can try manualy extrude, if the issue is this situatiion. You must use to parametric shape and then push the  parameters  with api. İ just wonderig, what is your main goal? Why are u using api with this part ?  Maybe its easüer with parametric design