private PointSet method_3(Autodesk.AutoCAD.DatabaseServices.Circle circle_0, double double_1)
{
PointSet result;
try
{
PointSet pointSet = new PointSet();
ngeometry.VectorGeometry.Circle circle = Conversions.ToCeometricCircle(circle_0);
if (double_1 > 0.0 && double_1 < circle.Circumference)
{
int num = Math.Max((int)Math.Ceiling(circle.Circumference / double_1), 4);
double num2 = 6.2831853071795862 / (double)num;
Point point = Conversions.ToCeometricPoint(circle_0.StartPoint);
for (int i = 0; i < num; i++)
{
ngeometry.VectorGeometry.Matrix3d rotationMatrix = ngeometry.VectorGeometry.Matrix3d.RotationArbitraryAxis(circle.NormalVector, (double)i * num2);
pointSet.Add(point.Rotate(circle.Center, rotationMatrix));
}
}
else
{
pointSet.Add(circle.Center);
}
result = pointSet;
}
catch (System.Exception ex)
{
Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor.WriteMessage("Can not subdivide circle (handle: " + circle_0.Handle.ToString() + ")\n");
result = null;
}
return(result);
}
public bool IsTangentTo(Circle circle)
{
return(circle.IsTangentTo(this));
}
public bool IsParallelTo(Circle circle)
{
return(this.vector3d_0.IsOrthogonalTo(circle.NormalVector));
}
public bool IsCoplanarTo(Circle circle)
{
return(Plane.smethod_0(circle.Center, circle.NormalVector, this.point_0) && circle.NormalVector.IsOrthogonalTo(this.vector3d_0));
}
public bool Intersects3d(Circle circle)
{
return(this.method_7(circle) != null);
}
public bool Intersects2d(Circle circle)
{
PointSet pointSet = this.method_1(circle);
return(pointSet != null && pointSet.Count != 0);
}
public static void ComputeMinEnclosingCircle(ObjectId[] idArray, CoordinateSystem actualCS)
{
Editor editor = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
Database workingDatabase = HostApplicationServices.WorkingDatabase;
ProgressMeter progressMeter = new ProgressMeter();
MessageFilter value = new MessageFilter();
System.Windows.Forms.Application.AddMessageFilter(value);
try
{
using (Transaction transaction = workingDatabase.TransactionManager.StartTransaction())
{
progressMeter.SetLimit(idArray.Length);
if ((double)idArray.Length > 10000.0)
{
progressMeter.Start("Computing min. enclosing circle...");
}
CoordinateTransformator coordinateTransformator = new CoordinateTransformator(CoordinateSystem.Global(), actualCS);
CoordinateTransformator inverseTransformation = coordinateTransformator.GetInverseTransformation();
BlockTable blockTable = (BlockTable)transaction.GetObject(workingDatabase.BlockTableId, (OpenMode)1);
BlockTableRecord blockTableRecord = (BlockTableRecord)transaction.GetObject(blockTable[BlockTableRecord.ModelSpace], (OpenMode)1);
ObjectId layerId = DBManager.CurrentLayerId();
DBManager.CurrentLayerName();
PointSet pointSet = new PointSet();
for (int i = 0; i < idArray.Length; i++)
{
progressMeter.MeterProgress();
DBPoint dBPoint = (DBPoint)transaction.GetObject(idArray[i], (OpenMode)0, true);
Point point = new Point(dBPoint.Position.X, dBPoint.Position.Y, dBPoint.Position.Z);
coordinateTransformator.Transform(point);
pointSet.Add(point);
}
ConvexHull2d convexHull2d = new ConvexHull2d();
convexHull2d.InitialPoints = pointSet;
convexHull2d.ComputeHull();
PointSet vertices = convexHull2d.Vertices;
double z = vertices[0].Z;
for (int j = 0; j < vertices.Count; j++)
{
vertices[j].Z = z;
}
SmallestEnclosingCircle smallestEnclosingCircle = new SmallestEnclosingCircle(vertices);
ngeometry.VectorGeometry.Circle circle = smallestEnclosingCircle.ComputeCircle();
Point center = circle.Center;
Point point2 = circle.NormalVector.ToPoint();
inverseTransformation.Transform(center);
inverseTransformation.Transform(point2);
Autodesk.AutoCAD.DatabaseServices.Circle circle2 = new Autodesk.AutoCAD.DatabaseServices.Circle(new Autodesk.AutoCAD.Geometry.Point3d(center.X, center.Y, center.Z), new Autodesk.AutoCAD.Geometry.Vector3d(point2.X, point2.Y, point2.Z), circle.Radius);
circle2.LayerId = (layerId);
blockTableRecord.AppendEntity(circle2);
transaction.AddNewlyCreatedDBObject(circle2, true);
editor.WriteMessage("\nMinimum enclosing circle properties:");
editor.WriteMessage("\n------------------------------------");
editor.WriteMessage("\nRadius : " + circle.Radius.ToString(DBManager.GetFormatFromLUPREC()));
editor.WriteMessage("\nArea : " + circle.Area.ToString(DBManager.GetFormatFromLUPREC()));
editor.WriteMessage("\nPerimeter length: " + circle.Circumference.ToString(DBManager.GetFormatFromLUPREC()));
transaction.Commit();
}
progressMeter.Stop();
}
catch (System.Exception ex)
{
progressMeter.Stop();
throw;
}
}