利用AutoCAD环境下的VBA,在屏幕上画三个轴,把各点连接起来,运算后,再把转换后图形显示出来
时间: 2024-02-06 11:03:36 浏览: 21
好的,我会尽力回答。首先,您需要使用AutoCAD环境下的VBA编写以下代码来绘制三个轴:
```
Public Sub DrawAxes()
Dim startPoint(0 To 2) As Double
Dim endPoint(0 To 2) As Double
'X轴
startPoint(0) = -100
startPoint(1) = 0
startPoint(2) = 0
endPoint(0) = 100
endPoint(1) = 0
endPoint(2) = 0
ThisDrawing.ModelSpace.AddLine startPoint, endPoint
'Y轴
startPoint(0) = 0
startPoint(1) = -100
startPoint(2) = 0
endPoint(0) = 0
endPoint(1) = 100
endPoint(2) = 0
ThisDrawing.ModelSpace.AddLine startPoint, endPoint
'Z轴
startPoint(0) = 0
startPoint(1) = 0
startPoint(2) = -100
endPoint(0) = 0
endPoint(1) = 0
endPoint(2) = 100
ThisDrawing.ModelSpace.AddLine startPoint, endPoint
End Sub
```
然后,您需要编写转换函数来对图形进行转换。这里以将三维坐标系上的点转换为二维平面上的点为例:
```
Public Function Transform(point(0 To 2) As Double) As Variant
Dim result(0 To 1) As Double
result(0) = point(0) + point(2)
result(1) = point(1) + point(2)
Transform = result
End Function
```
最后,您需要编写代码来连接各点、进行转换并显示图形:
```
Public Sub DrawShape()
Dim points(0 To 2, 0 To 2) As Double
Dim i As Integer
Dim startPoint As Variant
Dim endPoint As Variant
'定义三个点
points(0, 0) = -50
points(1, 0) = -50
points(2, 0) = 50
points(0, 1) = 50
points(1, 1) = -50
points(2, 1) = 50
points(0, 2) = 0
points(1, 2) = 50
points(2, 2) = -50
'连接各点
For i = 0 To 2
startPoint = Transform(points(:, i))
If i = 2 Then
endPoint = Transform(points(:, 0))
Else
endPoint = Transform(points(:, i + 1))
End If
ThisDrawing.ModelSpace.AddLine startPoint, endPoint
Next i
End Sub
```
这样,您就可以在屏幕上看到转换后的图形了。希望能对您有所帮助!
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