因为CATIA V5的测量工具接口未暴露给VBA,所以宏记录器无法记录测量代码。但是我们可以通过其他方式使用VBA来实现测距功能。
方法1:参数、关系法
首先,创建类型为Length的参数,并将其值保持为默认值0mm,或者自定义参数名称。然后,添加公式,选择distance (Body, Body)来找到您想要测量的2个图形元素。以下是相应的代码示例:
```vba
Sub CATMain()
Dim partDocument1 As Document
Set partDocument1 = CATIA.ActiveDocument
Dim part1 As Part
Set part1 = partDocument1.Part
Dim parameters1 As Parameters
Set parameters1 = part1.Parameters
Dim length1 As Dimension
Set length1 = parameters1.CreateDimension("", "LENGTH", 0.000000)
length1.Rename "MeasureDistance"
Dim relations1 As Relations
Set relations1 = part1.Relations
Dim formula1 As Formula
Set formula1 = relations1.CreateFormula("Formula.2", "", length1, "distance(`Geometrical Set.1\MyEndPt1`, `Geometrical Set.1\MyEndPt2`)")
formula1.Rename "Distance"
MsgBox "The endpoints are " & length1.ValueAsString & " apart."
End Sub
```
此外,以上的代码也可以用来测量点面间距,只需要稍作修改。
方法2:SPAWorkbench
另一个方法是使用SPAWorkbench属性及方法。以下为参考代码示例:
```vba
Sub CATMain()
Dim TheSPAWorkbench As Workbench
Set TheSPAWorkbench = CATIA.ActiveDocument.GetWorkbench("SPAWorkbench")
Dim TheMeasurable As Measurable
Set TheMeasurable = TheSPAWorkbench.GetMeasurable(reference1)
Dim MinimumDistance As Double
MinimumDistance = TheMeasurable.GetMinimumDistance(reference2)
MsgBox MinimumDistance
End Sub
```
P.S. GetWorkbench命令输入一个string,返回一个Workbench对象。在CATIA里,每个Workbench都有一个对应的ID。
测量一个Product下不同Part元素的距离时, 也可以依靠CreateReferenceFromName方法。以下是相应的代码示例:
```vba
Dim refCLP As Reference
Set refCLP = main_prod.CreateReferenceFromName(main_prod.PartNumber & "/" & prod1.Name & "/" & prods.Item(1).Name & "/!Point1")
Dim TheSPAWorkbench As Workbench
Set TheSPAWorkbench = CATIA.ActiveDocument.GetWorkbench("SPAWorkbench")
Dim TheMeasurable
Dim Coordinates(8)
Dim min_dist As Double
'...(代码略)...
```
以上是关于CATIA V5测量工具接口未暴露给VBA的解决方案,希望能对您有所帮助。
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