Creating cylinder (Solid3d object) using .NET API.

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By Virupaksha Aithal

To insert a cylindrical solid object into the AutoCAD database, you can use a Solid3d database object. To define a cylinder, you use the Solid3d.CreateFrustum() method. Remember to call RecordHistory to record solid history.

<CommandMethod("CreateCylinder")> _
       Public Shared Sub CreateCylinder()
            Dim radius As Double = 1.2345
            Dim height As Double = 2.3456
 
            Dim doc As Document = _
                        Application.DocumentManager.MdiActiveDocument
            Dim db As Database = _
                        doc.Database
            Dim tm As Transaction = _
                            db.TransactionManager.StartTransaction()
            Using tm
                Dim solid As New Solid3d()
                solid.RecordHistory = True
                solid.CreateFrustum(height, radius, radius, radius)
 
                Dim bt As BlockTable = _
                    tm.GetObject(db.BlockTableId, OpenMode.ForRead)
                Dim btr As BlockTableRecord = _
                    tm.GetObject(bt(BlockTableRecord.ModelSpace), _
                                        OpenMode.ForWrite)
                btr.AppendEntity(solid)
                tm.AddNewlyCreatedDBObject(solid, True)
                tm.Commit()
            End Using
        End Sub

Comments

2 responses to “Creating cylinder (Solid3d object) using .NET API.”

Tilo

May 4, 2012

One remark: If you like to insert cylinders with a certain start point and direction you would need to
a) define an appropriate UCS before creating the cylinder or
b) transform the entity to reflect these parameters after creating the cylinder

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Virupaksha aithal

May 4, 2012

Thanks for the comments. I will update the post with your remarks

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