using System;
using System.Reflection;
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;
Plane plane = hatch.GetPlane();
int nLoops = hatch.NumberOfLoops;
for (int i = 0; i < nLoops; i++)
{
HatchLoop loop = hatch.GetLoopAt(i);
if (loop.IsPolyline)
{
using (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
{
foreach (Curve2d cv in loop.Curves)
{
LineSegment2d line2d = cv as LineSegment2d;
CircularArc2d arc2d = cv as CircularArc2d;
EllipticalArc2d ellipse2d = cv as EllipticalArc2d;
NurbCurve2d spline2d = cv as NurbCurve2d;
if (line2d != null)
{
using (Line ent = new Line())
{
ent.StartPoint = new Point3d(plane, line2d.StartPoint);
ent.EndPoint = new Point3d(plane, line2d.EndPoint);
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, true);
}
}
else if (arc2d != null)
{
if (arc2d.IsClosed() || Math.Abs(arc2d.EndAngle - arc2d.StartAngle) < 1e-5)
{
using (Circle ent = new Circle(new Point3d(plane, arc2d.Center), plane.Normal, arc2d.Radius))
{
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, true);
}
}
else
{
if (arc2d.IsClockWise) {
arc2d = arc2d.GetReverseParameterCurve() as CircularArc2d;
}
double angle = new Vector3d(plane, arc2d.ReferenceVector).AngleOnPlane(plane);
double startAngle = arc2d.StartAngle + angle;
double endAngle = arc2d.EndAngle + angle;
using (Arc ent = new Arc(new Point3d(plane, arc2d.Center), plane.Normal, arc2d.Radius, startAngle, endAngle))
{
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, true);
}
}
}
else if (ellipse2d != null)
{
//-------------------------------------------------------------------------------------------
// Bug: Can not assign StartParam and EndParam of Ellipse:
// 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);
// ent.StartParam = e2d.StartAngle;
// ent.EndParam = e2d.EndAngle;
// error CS0200: Property or indexer 'Autodesk.AutoCAD.DatabaseServices.Curve.StartParam' cannot be assigned to -- it is read only
// error CS0200: Property or indexer 'Autodesk.AutoCAD.DatabaseServices.Curve.EndParam' cannot be assigned to -- it is read only
//---------------------------------------------------------------------------------------------
// Workaround is using Reflection
//
using (Ellipse ent = new Ellipse(new Point3d(plane, ellipse2d.Center), plane.Normal,
new Vector3d(plane, ellipse2d.MajorAxis) * ellipse2d.MajorRadius,
ellipse2d.MinorRadius / ellipse2d.MajorRadius, ellipse2d.StartAngle, ellipse2d.EndAngle))
{
ent.GetType().InvokeMember("StartParam", BindingFlags.SetProperty, null,
ent, new object[] { ellipse2d.StartAngle });
ent.GetType().InvokeMember("EndParam", BindingFlags.SetProperty, null,
ent, new object[] { ellipse2d.EndAngle });
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, true);
}
}
else if (spline2d != null)
{
if (spline2d.HasFitData)
{
NurbCurve2dFitData n2fd = spline2d.FitData;
using (Point3dCollection p3ds = new Point3dCollection())
{
foreach (Point2d p in n2fd.FitPoints) p3ds.Add(new Point3d(plane, p));
using (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 = spline2d.DefinitionData;
using (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;
using (Spline ent = new Spline(n2fd.Degree, n2fd.Rational,
spline2d.IsClosed(), spline2d.IsPeriodic(out period),
p3ds, knots, n2fd.Weights, n2fd.Knots.Tolerance, n2fd.Knots.Tolerance))
{
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, true);
}
}
}
}
}
}
}
}
tr.Commit();
}
}
}
}
