public List <Polyline> Create_Boundaries()
{
var Return = new List <Polyline>();
using (DocumentLock DL = AC.Doc.LockDocument())
{
#region 택
var acSSet = Utils.Select.MultiObjs();
var acEnts = Utils.Get.Entity(acSSet, typeof(Polyline));
#endregion
#region 폴리라인 연장시켜 하나의 덩어리로 만들기
var acLines = new List <LineSegment3d>(); // 선택된 Polyline의 모든 선분을 담음(최대, 최소 좌표를 얻기위해)
var acTempLines = new List <Line>(); // 작업 완료 후 지울 보조선
acEnts.Where(x => x is Polyline).ToList().ForEach(acEnt =>
{
var acEntsCopy = acEnts.Where(x => x != acEnt);
var acPoly = acEnt as Polyline;
for (int i = 0; i < acPoly.NumberOfVertices; i++)
{
try
{
var acLine = acPoly.GetLineSegmentAt(i);
if (!acLines.Contains(acLine))
{
acLines.Add(acLine);
}
var Di = acLine.Direction;
var sp = acLine.StartPoint;
var ep = acLine.EndPoint;
var moved_sp = Utils.PointUtil.Move(acLine.StartPoint, -Di);
var moved_ep = Utils.PointUtil.Move(acLine.StartPoint, Di);
var LS1 = new LineSegment3d(sp, moved_sp); // Line에서 연장된 선분
var LS2 = new LineSegment3d(ep, moved_ep); // Line에서 연장된 선분
var IP1 = CADUtil.IntersectedLine(acEntsCopy.ToList(), LS1, sp, 500);
var IP2 = CADUtil.IntersectedLine(acEntsCopy.ToList(), LS2, ep, 500);
double d = 0;
if (IP1 != new Point3d())
{
var SP = Utils.PointUtil.Move(sp, Di * d);
var EP = Utils.PointUtil.Move(IP1, -Di * d);
var L1 = CADUtil.CreateLine(SP, EP, ColorIndex.DarkGray);
acTempLines.Add(L1);
}
if (IP2 != new Point3d())
{
var SP = Utils.PointUtil.Move(ep, -Di * d);
var EP = Utils.PointUtil.Move(IP2, Di * d);
var L2 = CADUtil.CreateLine(SP, EP, ColorIndex.DarkGray);
acTempLines.Add(L2);
}
}
catch { }
}
});
#endregion
#region 폴리라인을 감싸는 Box객체를 생성
var P_X = (from a in acLines
let p = a.StartPoint
orderby p.X
select p.X);
var P_Y = (from a in acLines
let p = a.StartPoint
orderby p.Y
select p.Y);
var Min_P = new Point3d(P_X.First() - 1000, P_Y.First() - 1000, 0);
var Max_P = new Point3d(P_X.Last() + 1000, P_Y.Last() + 1000, 0);
var Box = CADUtil.CreateRectangle(Min_P, Max_P);
#endregion
#region 밀폐된 공간에서 Boundary 추적
var P1 = Utils.PointUtil.Move(Min_P, 500, 500);
var objColl = AC.Editor.TraceBoundary(P1, true);
var acObjs = from a in objColl.Cast <Entity>().ToList() select a;
#endregion
#region Boundary 생성
if (acObjs.Any())
{
using (Transaction T = AC.DB.TransactionManager.StartTransaction())
{
var BT = T.GetObject(AC.DB.BlockTableId, OpenMode.ForRead) as BlockTable;
var BTR = T.GetObject(BT[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord;
acObjs.ToList().ForEach(a =>
{
var acPoly = a as Polyline;
if (Math.Abs(acPoly.Area - Box.Area) > 1)
{
BTR.AppendEntity(acPoly);
T.AddNewlyCreatedDBObject(acPoly, true);
Return.Add(acPoly);
}
});
T.Commit();
}
}
#endregion
#region 제거
CADUtil.Erase(Box.Id);
acTempLines.ForEach(a => CADUtil.Erase(a.Id));
#endregion
}
return(Return);
}