Coincident constraint on a part of an assembly using API with C#

[nagihan.bostan]

Hi,
I did research on Geometric Constraints.AddCoincident in the form, but I couldn't find a solution to my problem.
- I select a part in assembly.
- I choose two planes ( A and B Plane )that are perpendicular to each other from selected part.
- I create a point using AddByProjectingEntity on A plane and I create a line on B plane.

I want to carry the line to the point where I created it. For this I use GeometricConstraints.AddCoincident. But the line didn't join with the point, as I did in Inventor.
Thanks in advance.

My Code:

private void AddCoincident()
{

Inventor.Application application = (Inventor.Application)System.Runtime.InteropServices.Marshal.GetActiveObject("Inventor.Application");

AssemblyDocument oAsmDoc = (AssemblyDocument)application.ActiveDocument;
TransientGeometry oTG = application.TransientGeometry;

ComponentOccurrence componentOccurrence = application.CommandManager.Pick(SelectionFilterEnum.kAssemblyLeafOccurrenceFilter, "Select a Part");
PartComponentDefinition oCompDef = (PartComponentDefinition)componentOccurrence.Definition;

WorkPlane Face1 = (WorkPlane)application.CommandManager.Pick(SelectionFilterEnum.kWorkPlaneFilter, "Select Face1");

PlanarSketch sktch = oCompDef.Sketches.Add(Face1, true);

SketchPoint oSketchCenterPoint = (SketchPoint)sktch.AddByProjectingEntity(oCompDef.WorkPoints["Center Point"]);

//double Cons = oSketchCenterPoint.Geometry3d.X;

WorkPlane Face2 = (WorkPlane)application.CommandManager.Pick(SelectionFilterEnum.kWorkPlaneFilter, "Select Face2");

PlanarSketch sktch1 = oCompDef.Sketches.Add(Face2, true);

Point2d P1 = oTG.CreatePoint2d(0, 0);

Point2d P2 = oTG.CreatePoint2d(5, 0);

SketchLine line = sktch1.SketchLines.AddByTwoPoints(P1, P2);

//pipe.EndSketchPoint.Merge(oSketchCenterPoint1);
sktch1.Edit();

sktch1.GeometricConstraints.AddCoincident(line.StartSketchPoint as SketchEntity, oSketchCenterPoint as SketchEntity);

}

[Michael.Navara · Accepted solution]

You can NOT create constraint between geometries in two different sketches. You need to project oSketchCenterPoint to sktch1 and this projected (newly created) point you can Merge with line.StartSketchPoint

[nagihan.bostan]

Thanks for the idea. I edited my code as below and the code works correctly now.

Code:

Inventor.Application application = (Inventor.Application)System.Runtime.InteropServices.Marshal.GetActiveObject("Inventor.Application");

AssemblyDocument oAsmDoc = (AssemblyDocument)application.ActiveDocument;
TransientGeometry oTG = application.TransientGeometry;

ComponentOccurrence componentOccurrence = application.CommandManager.Pick(SelectionFilterEnum.kAssemblyLeafOccurrenceFilter, "Select a Part");
PartComponentDefinition oCompDef = (PartComponentDefinition)componentOccurrence.Definition;

WorkPlane Face1 = (WorkPlane)application.CommandManager.Pick(SelectionFilterEnum.kWorkPlaneFilter, "Select Face1");

PlanarSketch sktch = oCompDef.Sketches.Add(Face1, true);

SketchPoint oSketchCenterPoint = (SketchPoint)sktch.AddByProjectingEntity(oCompDef.WorkPoints["Center Point"]);

WorkPlane Face2 = (WorkPlane)application.CommandManager.Pick(SelectionFilterEnum.kWorkPlaneFilter, "Select Face2");

PlanarSketch sktch1 = oCompDef.Sketches.Add(Face2, true);

SketchPoint oSketchCenterPointNew = (SketchPoint)sktch1.AddByProjectingEntity(oSketchCenterPoint);

Point2d P1 = oTG.CreatePoint2d(0, 0);

Point2d P2 = oTG.CreatePoint2d(5, 0);

SketchLine line = sktch1.SketchLines.AddByTwoPoints(P1, P2);

sktch1.GeometricConstraints.AddCoincident(line.StartSketchPoint as SketchEntity, oSketchCenterPointNew as SketchEntity);