发布时间2025-06-14 23:37
在CAD插件中实现图形编辑功能,通常需要以下几个步骤:
了解CAD系统API:
定义图形编辑功能:
设计用户界面:
编写代码:
以下是一些关键步骤和示例代码:
以下是一个使用AutoCAD的VBA编写移动图形的简单示例:
Sub MoveSelection()
Dim AcadDoc As AcadDocument
Dim AcadSelSet As AcadSelectionSet
Dim AcadEntity As AcadEntity
Dim pt1 As Variant, pt2 As Variant
Set AcadDoc = ThisDrawing
Set AcadSelSet = AcadDoc.SelectionSet
If AcadSelSet.Count = 0 Then
MsgBox "No objects selected."
Exit Sub
End If
pt1 = InputBox("Enter start point (X Y):", "Move Objects")
If IsEmpty(pt1) Then
Exit Sub
End If
pt2 = InputBox("Enter end point (X Y):", "Move Objects")
If IsEmpty(pt2) Then
Exit Sub
End If
' Convert points to relative coordinates
pt1 = Array(pt1(0) - AcadSelSet(1).InsertionPoint.X, pt1(1) - AcadSelSet(1).InsertionPoint.Y)
pt2 = Array(pt2(0) - AcadSelSet(1).InsertionPoint.X, pt2(1) - AcadSelSet(1).InsertionPoint.Y)
' Loop through each selected entity
For Each AcadEntity In AcadSelSet
AcadEntity.Location = Array(AcadEntity.Location.X + pt2(0), AcadEntity.Location.Y + pt2(1))
Next AcadEntity
End Sub
以下是一个旋转图形的VBA示例:
Sub RotateSelection()
Dim AcadDoc As AcadDocument
Dim AcadSelSet As AcadSelectionSet
Dim AcadEntity As AcadEntity
Dim Angle As Double
Set AcadDoc = ThisDrawing
Set AcadSelSet = AcadDoc.SelectionSet
If AcadSelSet.Count = 0 Then
MsgBox "No objects selected."
Exit Sub
End If
Angle = InputBox("Enter rotation angle:", "Rotate Objects")
' Loop through each selected entity
For Each AcadEntity In AcadSelSet
AcadEntity.RotateArray Array(AcadEntity.InsertionPoint.X, AcadEntity.InsertionPoint.Y), Angle
Next AcadEntity
End Sub
以上步骤和代码只是一个基本示例,具体的实现可能因CAD软件和插件需求而异。建议查阅相关CAD软件的官方文档,获取更详细和专业的指导。
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