Community
hi all
I'm trying to make a region out of Polyline3d
Build
But I get a message like in the picture
It is a possible helper to solve the error
Thank you all
The original code from the page
https://www.theswamp.org/index.php?topic=43572.0
/// BrepSamples.cs (excerpt) Copyright (c) 2008 Tony Tanzillo
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.BoundaryRepresentation; // acdbmgdbrep.dll
using Autodesk.AutoCAD.Geometry;
using AcBr = Autodesk.AutoCAD.BoundaryRepresentation;
using ErrorStatus = Autodesk.AutoCAD.Runtime.ErrorStatus;
namespace BRepSamples
{
public static class Containment
{
/// <summary>
///
/// This variation performs point contianment testing
/// against any closed curve from which a simple region
/// (e.g., no inner-loops) can be genreated, using the
/// Region.CreateFromCurves() API.
///
/// </summary>
[CommandMethod("testCURVECONTAINMENT")]
public static void CurveContainmentCommand()
{
Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
var doc = Application.DocumentManager.MdiActiveDocument;
var db = doc.Database;
ObjectId id = GetCurve(ed, "\nSelect a closed Curve: ");
if (!id.IsNull)
{
using (Transaction tr = ed.Document.TransactionManager.StartTransaction())
{
try
{
Curve curve = (Curve)id.GetObject(OpenMode.ForRead);
if (!curve.Closed)
{
ed.WriteMessage("\nInvalid selection, requires a CLOSED curve");
return;
}
if (id.ObjectClass == RXObject.GetClass(typeof(Polyline3d)))
{
var poly3d = (Polyline3d)tr.GetObject(id, OpenMode.ForWrite);
var space = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
try
{
Polyline poly2dx = new Polyline();
int j = 0;
foreach (ObjectId vid in poly3d)
{
PolylineVertex3d v3d = (PolylineVertex3d)tr.GetObject(vid, OpenMode.ForRead);
var planez = new Plane(Point3d.Origin, Vector3d.ZAxis);
//poly2dx.AddVertexAt(j, new Point3d(v3d.Position.X, v3d.Position.Y, v3d.Position.Z).Convert2d(planez), 0, 0, 0);
poly2dx.AddVertexAt(j, new Point2d(v3d.Position.X, v3d.Position.Y), 0, 0, 0);
j++;
}
poly2dx.Closed = true;
space.AppendEntity(poly2dx);
tr.AddNewlyCreatedDBObject(poly2dx, true);
Curve curve0 = (Curve)poly2dx.Id.GetObject(OpenMode.ForRead);
using (Region region = RegionFromClosedCurve(curve))
{
PromptPointOptions ppo = new PromptPointOptions("\nSelect a point: ");
ppo.AllowNone = true;
while (true) // loop while user continues to pick points
{
/// Get a point from user:
PromptPointResult ppr = ed.GetPoint(ppo);
if (ppr.Status != PromptStatus.OK) // no point was selected, exit
break;
// use the GetPointContainment helper method below to
// get the PointContainment of the selected point:
PointContainment containment = GetPointContainment(region, ppr.Value);
// Display the result:
ed.WriteMessage("\nPointContainment = {0}", containment.ToString());
}
}
}
catch (System.Exception ex)
{
Application.ShowAlertDialog(ex.Message);
}
}
else
using (Region region = RegionFromClosedCurve(curve))
{
PromptPointOptions ppo = new PromptPointOptions("\nSelect a point: ");
ppo.AllowNone = true;
while (true) // loop while user continues to pick points
{
/// Get a point from user:
PromptPointResult ppr = ed.GetPoint(ppo);
if (ppr.Status != PromptStatus.OK) // no point was selected, exit
break;
// use the GetPointContainment helper method below to
// get the PointContainment of the selected point:
PointContainment containment = GetPointContainment(region, ppr.Value);
// Display the result:
ed.WriteMessage("\nPointContainment = {0}", containment.ToString());
}
}
}
finally
{
tr.Commit();
}
}
}
}
// this helper method takes a Region and a Point3d that must be
// in the plane of the region, and returns the PointContainment
// of the given point, adjusted to correctly indicate its actual
// relationship to the region (inside/on boundary edge/outside).
public static PointContainment GetPointContainment(Region region, Point3d point)
{
PointContainment result = PointContainment.Outside;
/// Get a Brep object representing the region:
using (Brep brep = new Brep(region))
{
if (brep != null)
{
// Get the PointContainment and the BrepEntity at the given point:
using (BrepEntity ent = brep.GetPointContainment(point, out result))
{
if (ent is AcBr.Face)
result = PointContainment.Inside;
}
}
}
return result;
}
public static Region RegionFromClosedCurve(Curve curve)
{
if (!curve.Closed)
throw new ArgumentException("Curve must be closed.");
DBObjectCollection curves = new DBObjectCollection();
curves.Add(curve);
using (DBObjectCollection regions = Region.CreateFromCurves(curves))
{
if (regions == null || regions.Count == 0)
throw new InvalidOperationException("Failed to create regions");
if (regions.Count > 1)
throw new InvalidOperationException("Multiple regions created");
return regions.Cast<Region>().First();
}
}
public static PointContainment GetPointContainment(Curve curve, Point3d point)
{
if (!curve.Closed)
throw new ArgumentException("Curve must be closed.");
Region region = RegionFromClosedCurve(curve);
if (region == null)
throw new InvalidOperationException("Failed to create region");
using (region)
{
return GetPointContainment(region, point);
}
}
public static ObjectId GetCurve(Editor editor, string msg)
{
PromptEntityOptions peo = new PromptEntityOptions(msg);
peo.SetRejectMessage("Invalid selection: requires a closed Curve,");
peo.AddAllowedClass(typeof(Curve), false);
PromptEntityResult res = editor.GetEntity(peo);
return res.Status == PromptStatus.OK ? res.ObjectId : ObjectId.Null;
}
}
}
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