First attempt:
using System;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.EditorInput;
[assembly: CommandClass(typeof(Rivilis.HatchUtils))]
namespace Rivilis
{
public class HatchUtils
{
[CommandMethod("RHB", CommandFlags.Modal)]
public void RHB()
{
Document doc = Application.DocumentManager.MdiActiveDocument;
Editor ed = doc.Editor;
PromptEntityOptions prOps = new PromptEntityOptions("\nSelect Hatch: ");
prOps.SetRejectMessage("\nNot a Hatch");
prOps.AddAllowedClass(typeof(Hatch),false);
PromptEntityResult prRes = ed.GetEntity(prOps);
if (prRes.Status != PromptStatus.OK) return;
using (Transaction tr = doc.TransactionManager.StartTransaction()) {
Hatch hatch = tr.GetObject(prRes.ObjectId, OpenMode.ForRead) as Hatch;
if (hatch != null) {
BlockTableRecord btr = tr.GetObject(hatch.OwnerId, OpenMode.ForWrite) as BlockTableRecord;
if (btr == null) return;
int nLoops = hatch.NumberOfLoops;
for (int i = 0; i < nLoops; i++) {
HatchLoop loop = hatch.GetLoopAt(i);
if (loop.IsPolyline) {
Polyline poly = new Polyline();
int iVertex = 0;
foreach (BulgeVertex bv in loop.Polyline) {
poly.AddVertexAt(iVertex++, bv.Vertex, bv.Bulge, 0.0, 0.0);
}
btr.AppendEntity(poly);
tr.AddNewlyCreatedDBObject(poly, true);
} else {
int iCurve = 0;
Plane plane = hatch.GetPlane();
foreach (Curve2d cv in loop.Curves) {
LineSegment2d l2d = cv as LineSegment2d;
CircularArc2d c2d = cv as CircularArc2d;
EllipticalArc2d e2d = cv as EllipticalArc2d;
NurbCurve2d n2d = cv as NurbCurve2d;
if (l2d != null) {
Line ent = new Line();
ent.StartPoint = new Point3d(plane, l2d.StartPoint);
ent.EndPoint = new Point3d(plane, l2d.EndPoint);
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, true);
} else if (c2d != null) {
if (Math.Abs(c2d.StartAngle - c2d.EndAngle) < 1e-5) {
Circle ent = new Circle(new Point3d(plane, c2d.Center), plane.Normal, c2d.Radius);
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, true);
} else {
Arc ent = new Arc(new Point3d(plane, c2d.Center),c2d.Radius,c2d.StartAngle,c2d.EndAngle);
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, true);
}
} else if (e2d != null) {
Ellipse ent = new Ellipse(new Point3d(plane, e2d.Center), plane.Normal,
new Vector3d(plane,e2d.MajorAxis) * e2d.MajorRadius,
e2d.MinorRadius / e2d.MajorRadius, e2d.StartAngle, e2d.EndAngle);
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, true);
} else if (n2d != null) {
if (n2d.HasFitData) {
NurbCurve2dFitData n2fd = n2d.FitData;
Point3dCollection p3ds = new Point3dCollection();
foreach (Point2d p in n2fd.FitPoints) p3ds.Add(new Point3d(plane,p));
Spline ent = new Spline(p3ds, new Vector3d(plane,n2fd.StartTangent), new Vector3d(plane,n2fd.EndTangent),
n2fd.KnotParam, n2fd.Degree, n2fd.FitTolerance.EqualPoint);
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, true);
} else {
NurbCurve2dData n2fd = n2d.DefinitionData;
Point3dCollection p3ds = new Point3dCollection();
DoubleCollection knots = new DoubleCollection(n2fd.Knots.Count);
foreach (Point2d p in n2fd.ControlPoints) p3ds.Add(new Point3d(plane,p));
foreach (double k in n2fd.Knots) knots.Add(k);
double period = 0;
Spline ent = new Spline(n2fd.Degree, n2fd.Rational,
n2d.IsClosed(), n2d.IsPeriodic(out period),
p3ds, knots, n2fd.Weights, n2fd.Knots.Tolerance, n2fd.Knots.Tolerance);
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, true);
}
}
}
}
}
}
tr.Commit();
}
}
}
}
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Alexander Rivilis / Александр Ривилис / Олександр Рівіліс
Programmer & Teacher & Helper / Программист - Учитель - Помощник / Програміст - вчитель - помічник
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