创建几何公差 （.NET）

通过创建对象的实例来创建几何公差。创建对象的实例时，其构造函数可以接受一组可选的参数。创建新对象时，可以提供以下参数：FeatureControlFrameFeatureControlFrameFeatureControlFrame

• 包含公差符号（属性）的文本字符串Text
• 插入点（属性）Location
• 法线向量（属性）Normal
• 方向矢量（属性）Direction

创建几何公差

本示例在模型空间中创建一个简单的几何公差。

Imports Autodesk.AutoCAD.Runtime
Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.Geometry
 
<CommandMethod("CreateGeometricTolerance")> _
Public Sub CreateGeometricTolerance()
    '' Get the current 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 the Geometric Tolerance (Feature Control Frame)
        Using acFcf As FeatureControlFrame = New FeatureControlFrame()
            acFcf.Text = "{\Fgdt;j}%%v{\Fgdt;n}0.001%%v%%v%%v%%v"
            acFcf.Location = New Point3d(5, 5, 0)

            '' Add the new object to Model space and the transaction
            acBlkTblRec.AppendEntity(acFcf)
            acTrans.AddNewlyCreatedDBObject(acFcf, True)
        End Using

        '' Commit the changes and dispose of the transaction
        acTrans.Commit()
    End Using
End Sub

using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
 
[CommandMethod("CreateGeometricTolerance")]
public static void CreateGeometricTolerance()
{
    // Get the current 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 the Geometric Tolerance (Feature Control Frame)
        using (FeatureControlFrame acFcf = new FeatureControlFrame())
        {
            acFcf.Text = "{\\Fgdt;j}%%v{\\Fgdt;n}0.001%%v%%v%%v%%v";
            acFcf.Location = new Point3d(5, 5, 0);

            // Add the new object to Model space and the transaction
            acBlkTblRec.AppendEntity(acFcf);
            acTrans.AddNewlyCreatedDBObject(acFcf, true);
        }

        // Commit the changes and dispose of the transaction
        acTrans.Commit();
    }
}

Sub CreateGeometricTolerance()
    Dim toleranceObj As AcadTolerance
    Dim textString As String
    Dim insertionPoint(0 To 2) As Double
    Dim direction(0 To 2) As Double
 
    ' Define the tolerance object
    textString = "{\Fgdt;j}%%v{\Fgdt;n}0.001%%v%%v%%v%%v"
    insertionPoint(0) = 5
    insertionPoint(1) = 5
    insertionPoint(2) = 0
    direction(0) = 1
    direction(1) = 0
    direction(2) = 0
 
    ' Create the tolerance object in model space
    Set toleranceObj = ThisDrawing.ModelSpace. _
                           AddTolerance(textString, insertionPoint, direction)
 
    ZoomAll
End Sub