vb.net com 插件 读取CAD所有图元的逐点坐标信息并输出到excel
时间: 2023-08-22 18:06:03 浏览: 84
您可以使用AutoCAD的COM API来读取CAD所有图元的逐点坐标信息,并将其输出到Excel中。以下是一个简单的VB.NET代码示例,它演示了如何使用COM API从CAD中读取所有的线和圆的坐标信息,并将它们输出到Excel工作簿中:
```vb.net
Imports System.Runtime.InteropServices
Imports Microsoft.Office.Interop.Excel
Public Class CadToExcel
Private AcadApp As AcadApplication 'AutoCAD Application
Private ExcelApp As Application 'Excel Application
Private ExcelWorkbook As Workbook 'Excel Workbook
Private ExcelWorksheet As Worksheet 'Excel Worksheet
Private ExcelRange As Range 'Excel Range
Public Sub New()
'Initialize AutoCAD Application
AcadApp = New AcadApplication()
AcadApp.Visible = True
'Initialize Excel Application
ExcelApp = New Application()
ExcelApp.Visible = True
'Create a new Excel Workbook
ExcelWorkbook = ExcelApp.Workbooks.Add()
'Create a new Excel Worksheet
ExcelWorksheet = ExcelWorkbook.Worksheets.Add()
'Add headers to the Excel Worksheet
ExcelWorksheet.Range("A1").Value = "Object Type"
ExcelWorksheet.Range("B1").Value = "X"
ExcelWorksheet.Range("C1").Value = "Y"
ExcelWorksheet.Range("D1").Value = "Z"
End Sub
Public Sub ExportCoordinatesToExcel()
'Get the ModelSpace Block from the AutoCAD Database
Dim ModelSpace As AcadBlock = AcadApp.ActiveDocument.Blocks.Item(0)
'Loop through all the Entities in the ModelSpace Block
For Each Entity As AcadEntity In ModelSpace
'Check if the Entity is a Line or a Circle
If TypeOf Entity Is AcadLine OrElse TypeOf Entity Is AcadCircle Then
'Get the Coordinates of the Start Point of the Entity
Dim StartPoint As Double() = Entity.StartPoint
'Get the Coordinates of the End Point of the Entity (if it is a Line)
Dim EndPoint As Double() = If(TypeOf Entity Is AcadLine, DirectCast(Entity, AcadLine).EndPoint, StartPoint)
'Add the Start Point Coordinates to the Excel Worksheet
Dim StartPointRow As Integer = ExcelWorksheet.UsedRange.Rows.Count + 1
ExcelWorksheet.Range("A" & StartPointRow).Value = Entity.EntityName
ExcelWorksheet.Range("B" & StartPointRow).Value = StartPoint(0)
ExcelWorksheet.Range("C" & StartPointRow).Value = StartPoint(1)
ExcelWorksheet.Range("D" & StartPointRow).Value = StartPoint(2)
'Add the End Point Coordinates to the Excel Worksheet (if it is a Line)
If TypeOf Entity Is AcadLine Then
Dim EndPointRow As Integer = ExcelWorksheet.UsedRange.Rows.Count + 1
ExcelWorksheet.Range("A" & EndPointRow).Value = Entity.EntityName
ExcelWorksheet.Range("B" & EndPointRow).Value = EndPoint(0)
ExcelWorksheet.Range("C" & EndPointRow).Value = EndPoint(1)
ExcelWorksheet.Range("D" & EndPointRow).Value = EndPoint(2)
End If
End If
Next
End Sub
Public Sub Close()
'Close the Excel Workbook
ExcelWorkbook.Close()
'Release the Excel Objects
Marshal.ReleaseComObject(ExcelRange)
Marshal.ReleaseComObject(ExcelWorksheet)
Marshal.ReleaseComObject(ExcelWorkbook)
Marshal.ReleaseComObject(ExcelApp)
'Close the AutoCAD Application
AcadApp.Quit()
'Release the AutoCAD Object
Marshal.ReleaseComObject(AcadApp)
End Sub
End Class
```
请注意,此示例仅考虑了线和圆这两种类型的图元。如果您需要处理其他类型的图元,请相应地修改代码。此外,您需要将AutoCAD和Excel的引用添加到您的VB.NET项目中,以便能够使用它们的COM API。
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