Hatch オブジェクトの境界に対するループの追加、挿入、または削除を行うことができます。境界に対する変更に合うように、自動調整ハッチングは更新されます。非自動調整ハッチングは更新されません。
ハッチング境界を編集するには、次のメソッドを使用します。
ハッチングにループを追加します。AppendLoop メソッドの最初のパラメータおよび HatchLoopTypes 列挙型によって定義される定数を使用し、追加するループの種類を定義します。
ハッチングの指定インデックスのループを取得します。
ハッチングのインデックスを指定して、ループを挿入します。
ハッチングの指定インデックスのループを削除します。
ハッチング境界をクエリーするには、次のいずれかのメソッドを使用します。
ハッチングの指定インデックスのループの種類を取得します。
ハッチングのループの数を取得します。
次の例は、自動調整ハッチングを作成します。次に円を作成し、その円を内部ループとしてハッチングに追加します。
Imports Autodesk.AutoCAD.Runtime
Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.Geometry
<CommandMethod("EditHatchAppendLoop")> _
Public Sub EditHatchAppendLoop()
'' Get the current document and database
Dim acDoc As Document = Application.DocumentManager.MdiActiveDocument
Dim acCurDb As Database = acDoc.Database
'' Start a transaction
Using acTrans As Transaction = acCurDb.TransactionManager.StartTransaction()
'' Open the Block table for read
Dim acBlkTbl As BlockTable
acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId, _
OpenMode.ForRead)
'' Open the Block table record Model space for write
Dim acBlkTblRec As BlockTableRecord
acBlkTblRec = acTrans.GetObject(acBlkTbl(BlockTableRecord.ModelSpace), _
OpenMode.ForWrite)
'' Create an arc object for the closed boundary to hatch
Using acArc As Arc = New Arc(New Point3d(5, 3, 0), 3, 0, 3.141592)
acBlkTblRec.AppendEntity(acArc)
acTrans.AddNewlyCreatedDBObject(acArc, True)
'' Create an line object for the closed boundary to hatch
Using acLine As Line = New Line(acArc.StartPoint, acArc.EndPoint)
acBlkTblRec.AppendEntity(acLine)
acTrans.AddNewlyCreatedDBObject(acLine, True)
'' Adds the arc and line to an object id collection
Dim acObjIdColl As ObjectIdCollection = New ObjectIdCollection()
acObjIdColl.Add(acArc.ObjectId)
acObjIdColl.Add(acLine.ObjectId)
'' Create the hatch object and append it to the block table record
Using acHatch As Hatch = New Hatch()
acBlkTblRec.AppendEntity(acHatch)
acTrans.AddNewlyCreatedDBObject(acHatch, True)
'' Set the properties of the hatch object
'' Associative must be set after the hatch object is appended to the
'' block table record and before AppendLoop
acHatch.SetHatchPattern(HatchPatternType.PreDefined, "ANSI31")
acHatch.Associative = True
acHatch.AppendLoop(HatchLoopTypes.Outermost, acObjIdColl)
'' Create a circle object for the inner boundary of the hatch
Using acCirc As Circle = New Circle()
acCirc.Center = New Point3d(5, 4.5, 0)
acCirc.Radius = 1
acBlkTblRec.AppendEntity(acCirc)
acTrans.AddNewlyCreatedDBObject(acCirc, True)
'' Adds the circle to an object id collection
acObjIdColl.Clear()
acObjIdColl.Add(acCirc.ObjectId)
'' Append the circle as the inner loop of the hatch and evaluate it
acHatch.AppendLoop(HatchLoopTypes.Default, acObjIdColl)
acHatch.EvaluateHatch(True)
End Using
End Using
End Using
End Using
'' Save the new object to the database
acTrans.Commit()
End Using
End Sub
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
[CommandMethod("EditHatchAppendLoop")]
public static void EditHatchAppendLoop()
{
// Get the current document and database
Document acDoc = Application.DocumentManager.MdiActiveDocument;
Database acCurDb = acDoc.Database;
// Start a transaction
using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
{
// Open the Block table for read
BlockTable acBlkTbl;
acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId,
OpenMode.ForRead) as BlockTable;
// Open the Block table record Model space for write
BlockTableRecord acBlkTblRec;
acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace],
OpenMode.ForWrite) as BlockTableRecord;
// Create an arc object for the closed boundary to hatch
using (Arc acArc = new Arc(new Point3d(5, 3, 0), 3, 0, 3.141592))
{
acBlkTblRec.AppendEntity(acArc);
acTrans.AddNewlyCreatedDBObject(acArc, true);
// Create an line object for the closed boundary to hatch
using (Line acLine = new Line(acArc.StartPoint, acArc.EndPoint))
{
acBlkTblRec.AppendEntity(acLine);
acTrans.AddNewlyCreatedDBObject(acLine, true);
// Adds the arc and line to an object id collection
ObjectIdCollection acObjIdColl = new ObjectIdCollection();
acObjIdColl.Add(acArc.ObjectId);
acObjIdColl.Add(acLine.ObjectId);
// Create the hatch object and append it to the block table record
using (Hatch acHatch = new Hatch())
{
acBlkTblRec.AppendEntity(acHatch);
acTrans.AddNewlyCreatedDBObject(acHatch, true);
// Set the properties of the hatch object
// Associative must be set after the hatch object is appended to the
// block table record and before AppendLoop
acHatch.SetHatchPattern(HatchPatternType.PreDefined, "ANSI31");
acHatch.Associative = true;
acHatch.AppendLoop(HatchLoopTypes.Outermost, acObjIdColl);
// Create a circle object for the inner boundary of the hatch
using (Circle acCirc = new Circle())
{
acCirc.Center = new Point3d(5, 4.5, 0);
acCirc.Radius = 1;
acBlkTblRec.AppendEntity(acCirc);
acTrans.AddNewlyCreatedDBObject(acCirc, true);
// Adds the circle to an object id collection
acObjIdColl.Clear();
acObjIdColl.Add(acCirc.ObjectId);
// Append the circle as the inner loop of the hatch and evaluate it
acHatch.AppendLoop(HatchLoopTypes.Default, acObjIdColl);
acHatch.EvaluateHatch(true);
}
}
}
}
// Save the new object to the database
acTrans.Commit();
}
}
Sub EditHatchAppendLoop()
Dim hatchObj As AcadHatch
Dim patternName As String
Dim PatternType As Long
Dim bAssociativity As Boolean
' Define and create the hatch
patternName = "ANSI31"
PatternType = 0
bAssociativity = True
Set hatchObj = ThisDrawing.ModelSpace. _
AddHatch(PatternType, patternName, bAssociativity)
' Create the outer loop for the hatch.
Dim outerLoop(0 To 1) As AcadEntity
Dim center(0 To 2) As Double
Dim radius As Double
Dim startAngle As Double
Dim endAngle As Double
center(0) = 5: center(1) = 3: center(2) = 0
radius = 3
startAngle = 0
endAngle = 3.141592
Set outerLoop(0) = ThisDrawing.ModelSpace. _
AddArc(center, radius, startAngle, endAngle)
Set outerLoop(1) = ThisDrawing.ModelSpace. _
AddLine(outerLoop(0).startPoint, outerLoop(0).endPoint)
' Append the outer loop to the hatch object
hatchObj.AppendOuterLoop (outerLoop)
' Create a circle as the inner loop for the hatch.
Dim innerLoop(0) As AcadEntity
center(0) = 5: center(1) = 4.5: center(2) = 0
radius = 1
Set innerLoop(0) = ThisDrawing.ModelSpace. _
AddCircle(center, radius)
' Append the circle as an inner loop to the hatch
hatchObj.AppendInnerLoop (innerLoop)
' Evaluate and display the hatch
hatchObj.Evaluate
ThisDrawing.Regen True
End Sub