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C3D-LW-TAP · Linework: tap done

7 surveyed points chained nearest-neighbour, breaking the run at a 120ft gap -> 1 polyline(s). Layer SEWER_TAP.

C# payload

// TAP linework -> SEWER_TAP
// 7 surveyed points chained nearest-neighbour, breaking the run at a 120ft gap -> 1 polyline(s).
// Regular Polyline only (never Polyline3d - cookbook 11); elevation = mean of each run.
// Host owns Tx; host regens after commit.
const string LAYER = "SEWER_TAP";
var ms = (BlockTableRecord)Tx.GetObject(SymbolUtilityServices.GetBlockModelSpaceId(Db), OpenMode.ForWrite);
EnsureLayer(LAYER, 3);

    {
        var pl = new Polyline();
        pl.AddVertexAt(0, new Point2d(2296688.73, 1280080.25), 0, 0, 0);
        pl.AddVertexAt(1, new Point2d(2296628.18, 1280057.93), 0, 0, 0);
        pl.AddVertexAt(2, new Point2d(2296622.0, 1280055.89), 0, 0, 0);
        pl.AddVertexAt(3, new Point2d(2296607.71, 1280064.06), 0, 0, 0);
        pl.AddVertexAt(4, new Point2d(2296598.96, 1280075.58), 0, 0, 0);
        pl.AddVertexAt(5, new Point2d(2296598.58, 1280075.62), 0, 0, 0);
        pl.AddVertexAt(6, new Point2d(2296550.11, 1280052.8), 0, 0, 0);
        pl.Closed = false;
        pl.Elevation = 728.54;
        pl.Layer = LAYER;
        ms.AppendEntity(pl);
        Tx.AddNewlyCreatedDBObject(pl, true);
        Log("  run 1: " + pl.NumberOfVertices + " verts, " + pl.Length.ToString("F1") + " ft");
    }

int n = 0;
foreach (ObjectId id in ms) {
    var e = Tx.GetObject(id, OpenMode.ForRead) as Autodesk.AutoCAD.DatabaseServices.Entity;
    if (e != null && e.Layer == LAYER && e is Polyline) n++;
}
Log("SEWER_TAP now holds " + n + " polyline(s) (verified)");

Result

  run 1: 7 verts, 155.9 ft
SEWER_TAP now holds 1 polyline(s) (verified)