DraworderTable from a Xref in c#

hsiegenthaler — Thu, 09 Nov 2023 12:46:45 GMT

What I want:

I have a drawing, in this drawing it has 1-n Xref.

In the xref it has 3dPoly, 2dPoly, lines and arcs.

Also in the drawing it has 3dpoly, 2dpoly, lines and arcs.

I have a function that returns all ObjectIds of entities that are on top of each other.

These can also be entities that are in Xref.

What I need is a function that tells me which entity is on top.

e.g.

Current drawing has 2 polylines on top of each other.

The drawing has 2 xrefs, each of which also has 2 polylines on top of each other.

So I have 6 entities that are on top of each other.

The function has to return the entity that is on top.

Is that even possible?

Re: DraworderTable from a Xref in c#

cuongtk2 — Thu, 09 Nov 2023 13:43:40 GMT

If on top entity is xref, you can open entity.BlockId as BlockTableRecord and get top entity in this. But that might not be a pline.

Re: DraworderTable from a Xref in c#

hsiegenthaler — Thu, 09 Nov 2023 13:58:06 GMT

First - Thank you for you repley

Ok and how I'm doing that?

any definitions/method for doing that

PS: I but my code

At row 197 start the function where I need, to evaluete the top entity

Re: DraworderTable from a Xref in c#

cuongtk2 — Fri, 10 Nov 2023 09:58:02 GMT

internal class CadClass1 { [CommandMethod("NCv")] public static void ncv() { Document doc = AcadApp.DocumentManager.MdiActiveDocument; Database db = doc.Database; var ed = doc.Editor; var ptr = ed.GetPoint("\nPick point"); if (ptr.Status == PromptStatus.OK) { var pt = ptr.Value; ObjectNear objnear = new ObjectNear() { Id = ObjectId.Null, Z = -100 }; using (DocumentLock lk = doc.LockDocument()) { using (var tr = db.TransactionManager.StartTransaction()) { var cspace = tr.GetObject(db.CurrentSpaceId, OpenMode.ForRead) as BlockTableRecord; objnear = FindNearPoint(cspace, pt, objnear, tr); } } ed.WriteMessage("Top curve Id: " + objnear.Id.ToString() + ", and Z:" + objnear.Z.ToString()); } } /// <summary> /// class to save ObjectId and MaxZ /// </summary> internal class ObjectNear { public ObjectId Id { get; set; } public double Z { get; set; } } /// <summary> /// Check distance from point3d to curve on XY plane < 0.01 /// </summary> /// <param name="cv"></param> /// <param name="pt"></param> /// <returns></returns> private static bool IsPointNearCurve(Curve cv, Point3d pt) { var pc = cv.GetClosestPointTo(pt, false); return pt.Convert2d(new Plane()).GetDistanceTo(pc.Convert2d(new Plane())) < 0.01; } /// <summary> /// Get Elevation of pickpoint on curve /// </summary> /// <param name="cv"></param> /// <param name="pickpoint"></param> /// <returns></returns> private static double GetZpoint(Curve cv, Point3d pickpoint) => cv.GetClosestPointTo(pickpoint, false).Z; /// <summary> /// Find curve near a point from BTR currentspace /// </summary> /// <param name="btr"></param> /// <param name="pickpoint"></param> /// <param name="objnear"></param> /// <param name="tr"></param> /// <returns></returns> private static ObjectNear FindNearPoint(BlockTableRecord btr, Point3d pickpoint, ObjectNear objnear, Transaction tr) { foreach (ObjectId item in btr) { var ent = tr.GetObject(item, OpenMode.ForRead) as Entity; if (ent is Curve cv) { if (IsPointNearCurve(cv, pickpoint) && objnear.Z <= GetZpoint(cv, pickpoint)) { objnear.Id = cv.Id; objnear.Z = GetZpoint(cv, pickpoint); } } else if (ent is BlockReference br ) { var matrix = br.BlockTransform; var newpt = pickpoint.TransformBy(matrix); var btrblock = tr.GetObject(br.BlockTableRecord, OpenMode.ForRead) as BlockTableRecord; objnear = FindNearPoint(btrblock, newpt, objnear, tr); } } return objnear; } }

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DraworderTable from a Xref in c#

Re: DraworderTable from a Xref in c#

Re: DraworderTable from a Xref in c#

Re: DraworderTable from a Xref in c#