ハッチング境界を編集する(.NET)

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。

AppendLoop

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。

GetLoopAt

ハッチングの指定インデックスのループを取得します。

InsertLoopAt

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。

RemoveLoopAt

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。

LoopTypeAt

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。

NumberOfLoops

ハッチングのループの数を取得します。

ハッチングに内部ループを追加する

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。

VB.NET

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

C#

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();
    }
}

VBA/ActiveX コード リファレンス

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