How to select Subassembly marker point programmatically?

[varshaauti27]

When trying to add subassembly to assembly using AddSubassembly(ObjectId subassemblyId, Point pointHookTo); method, the “pointHookTo” fiedls, which governs marker point for subassembly. Is it possible to select that marker point(Autodesk.Civil.DatabaseServices.Point) like other objects selections?

OR

Is it possible to convert Autodesk.AutoCAD.Geometry.Point3d to Autodesk.Civil.DatabaseServices.Point vice-versa.

OR

If I have Autodesk.AutoCAD.Geometry.Point3d is there any way to find nearest marker point to that selected Autodesk.AutoCAD.Geometry.Point3d with API

[hosneyalaa]

Hi 

May this help you

 

https://forums.autodesk.com/t5/civil-3d-customization/creating-subassembly-using-net/m-p/4745485

 

[varshaauti27]

This is Autodesk.Civil.DatabaseServices.Point collection, which give us all marker points of subassembly.

Through my addin I want user to select marker point then I can use that point to hook subassembly using AddSubassembly method which requires Autodesk.Civil.DatabaseServices.Point. 

I am using ed.GetPoint method to select point which returns Autodesk.AutoCAD.Geometry.Point3d point so I can not pass this to AddSubassembly method as it needs Autodesk.Civil.DatabaseServices.Point. 

In short, I want user to select Marker point at index: 2, then I will attached Subassembly there using AddSubassembly method

[hosneyalaa]

Using looping

Subassembly.points 

If x1 ==xi  and y1 == yi

Hank.point = Subassembly.points[i]

[gleeuwdrent · Accepted solution]

Use the PickedPoint property of your PromptEntityResult and loop trough all points of the subassembly to determine the nearest point:

int indexHookTo = -1;
Point3d basePoint = subassembly.Origin;
Point3d pickedPoint = promptEntityResult.PickedPoint;

double distance = 10000000;
foreach (var point in subassembly.Points)
{
	Point3d point3d = new Point3d(basePoint.X + point.Offset, basePoint.Y + point.Elevation, 0.0);
	if (point3d.DistanceTo(pickedPoint) < distance)
	{
		distance = point3d.DistanceTo(pickedPoint);
		indexHookTo = point.Index;
	}
}

[varshaauti27]

It works as expected, Thanks a lot!