在CAD用VB语言获取图块坐标并打印代码

在AutoCAD中，使用Visual Basic (VB) 语言获取图块坐标通常需要使用AutoLISP或AutoCAD的COM API。这里是一个简单的示例，展示了如何使用VB.NET来获取图块的位置：

Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.Geometry

Sub GetBlockCoordinates()
    Dim acadApp As AcadApplication = Application.AcadApplication
    Dim doc As Document = acadApp.ActiveDocument
    Dim modelSpace As Space = doc.ModelSpace

    ' 获取当前选择的块
    Dim blocks As SelectionSet = modelSpace.GetSelectionSet()
    If blocks.Count > 0 Then
        Dim blockRef As BlockReference = blocks.Item(1)
        
        ' 使用块参照获取几何信息
        Dim blockData As BlockData = blockRef.BlockData
        Dim basePoint As Point3d = blockData.BoundingBox.Min
        Dim size As Size3d = blockData.BoundingBox.Size

        ' 打印坐标
        Console.WriteLine("Base point coordinates: " & basePoint.ToString())
        Console.WriteLine("Size: " & size.Width & ", " & size.Height & ", " & size.Z)

        ' 打印详细坐标，假设块在世界坐标系
        Dim rotationAngle As Double = blockRef.RotationAngle
        Dim originOffset As Vector3d = blockRef.OriginOffset
        Console.WriteLine("Rotation angle: " & rotationAngle & " degrees")
        Console.WriteLine("Origin offset: " & originOffset.X & ", " & originOffset.Y & ", " & originOffset.Z)
    Else
        Console.WriteLine("No block selected.")
    End If
End Sub

这个代码首先打开当前文档，然后获取模型空间的选择集。如果选择了图块，它将提取图块的位置、大小和旋转角度信息。请注意，这只是一个基本的示例，实际应用可能需要处理更复杂的场景，比如处理多个选中的图块或在图纸空间中定位图块。