Solidworks宏，计算边界框

下面是一个示例的SolidWorks宏，用于计算边界框：

Option Explicit

Sub CalculateBoundingBox()

    Dim swApp As SldWorks.SldWorks
    Dim swModel As SldWorks.ModelDoc2
    Dim swSelMgr As SldWorks.SelectionMgr
    Dim swSelObj As SldWorks.Entity
    Dim swPart As SldWorks.PartDoc
    Dim swFeatureMgr As SldWorks.FeatureManager
    Dim swBody As SldWorks.Body2
    Dim swBox As SldWorks.MathUtility
    Dim swMinPt As SldWorks.MathPoint
    Dim swMaxPt As SldWorks.MathPoint

    ' 获取当前的SolidWorks应用程序
    Set swApp = Application.SldWorks
    
    ' 获取当前的文档
    Set swModel = swApp.ActiveDoc
    
    ' 确保文档是零件文档
    If Not swModel.GetType = swDocumentTypes_e.swDocPART Then
        MsgBox "请打开一个零件文档"
        Exit Sub
    End If
    
    ' 获取选择管理器
    Set swSelMgr = swModel.SelectionManager
    
    ' 选中零件的所有实体
    swSelMgr.EnableContourSelection = False
    swSelMgr.EnablePreSelectArea = False
    swSelMgr.EnablePreSelectSingle = False
    swSelMgr.EnableSelBox = False
    swSelMgr.EnableTouch = False
    swSelMgr.EnableVertexSelection = False
    
    ' 获取选择的实体
    Set swSelObj = swSelMgr.GetSelectedObject6(1, -1)
    
    ' 确保选择的实体是一个实体
    If Not swSelObj Is Nothing Then
        If Not swSelObj.GetType = swSelectType_e.swSelSOLIDBODY Then
            MsgBox "请选择一个实体"
            Exit Sub
        End If
    Else
        MsgBox "请选择一个实体"
        Exit Sub
    End If
    
    ' 获取实体的包围盒
    Set swPart = swModel
    Set swFeatureMgr = swPart.FeatureManager
    
    swFeatureMgr.SelectByID2 "", "BODY", 0, 0, 0, False, 0, Nothing, 0
    Set swBody = swSelMgr.GetSelectedObject6(1, -1)
    
    Set swBox = swApp.GetMathUtility
    Set swMinPt = swBox.CreatePoint(swBody.GetBodyBox(0))
    Set swMaxPt = swBox.CreatePoint(swBody.GetBodyBox(1))
    
    ' 显示包围盒的坐标
    MsgBox "最小点坐标：" & swMinPt.ArrayData & vbNewLine & "最大点坐标：" & swMaxPt.ArrayData
    
End Sub

这个宏的作用是计算所选实体的边界框的最小和最大坐标。首先，宏会检查当前打开的文档是否是一个零件文档。然后，它会获取选择的实体并计算其边界框的最小和最大点。最后，宏会弹出一个对话框显示最小和最大点的坐标。

要使用这个宏，请打开SolidWorks，创建或打开一个零件文档，然后按下Alt + F11打开VBA编辑器。在VBA编辑器中，将代码粘贴到模块中，并运行宏。选择一个实体，然后点击运行宏按钮。将会弹出一个对话框显示边界框的最小和最大点的坐标。