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有時(shí)候，做元件封裝的時(shí)候，做得不是按中心設(shè)置為原點(diǎn)（不提倡這種做法），所以制成之后導(dǎo)出來的坐標(biāo)圖和直接提供給貼片廠的要求相差比較大。比如，以元件的某一個(gè)pin 腳作為元件的原點(diǎn)，明顯就有問題，直接修改封裝的話，PCB又的重新調(diào)整。
所以想到一個(gè)方法：把每個(gè)元件所有的管腳的X坐標(biāo)和Y坐標(biāo)分別求平均值，
就為元件的中心。
對于大部分元件應(yīng)該都是完全正確的。
但也有小部分可能稍微有點(diǎn)偏差，比如三極管、管腳間距不完全相等的繼電器，當(dāng)然這部分是很少很少的部分，而且也偏差不大。
貼片廠貼片都會(huì)檢查一下，特別是不規(guī)則的封裝，
也無法認(rèn)定中心應(yīng)該設(shè)置在哪。
不要偏差太大，即可以稍微調(diào)整。
把以下代碼另存為*.bas文件，然后在PADS Layout中導(dǎo)入。
導(dǎo)入方法：tools——）Basic Script——）Basic Script——）Load file，把保存的.bas文件導(dǎo)入即可。
然后點(diǎn)擊run，方法和運(yùn)行原來就有的我文件一樣。
如果 不會(huì)操作的 下載 ！
Sub Main
' Open temporarly text file
Randomize
filename = DefaultFilePath & "\tmp" & CInt(Rnd()*10000) & ".xls"
Open filename For Output As #1
' Output Headers
Print #1, "PartType"; Space(32);
Print #1, "RefDes"; Space(24);
Print #1, "PartDecal"; Space(32);
Print #1, "Pins"; Space(6);
Print #1, "Layer"; Space(26);
Print #1, "Orient."; Space(24);
Print #1, "X"; Space(30);
Print #1, "Y"; Space(29);
Print #1, "SMD"; Space(7);
Print #1, "Glued"; Space(0)
' Lock server to speed up process
LockServer
' Go through each component in the design and output values
For Each nextComp In ActiveDocument.Components
Dim centerX As Single
Dim centerY As Single
Dim cout As Integer
centerX = 0.0
centerY = 0.0
cout = 0
Print #1, nextComp.PartType; Space$(40-Len(nextComp.PartType));
Print #1, nextComp.Name; Space$(30-Len(nextComp.Name));
Print #1, nextComp.Decal; Space$(40-Len(nextComp.Decal));
Print #1, nextComp.Pins.Count; Space$(10-Len(nextComp.Pins.Count));
Print #1, ActiveDocument.LayerName(nextComp.layer); Space$(30-Len(ActiveDocument.LayerName(nextComp.layer)));
Print #1, nextComp.Orientation; Space$(30-Len(nextComp.Orientation));
For Each nextCompPin In nextComp.Pins
centerX = centerX+nextCompPin.PositionX
centerY = centerY+nextCompPin.PositionY
Next nextCompPin
centerPositionX = Format$(centerX/(nextComp.Pins.Count), "#.00")
centerPositionY = Format$(centerY/(nextComp.Pins.Count), "#.00")
Print #1, centerPositionX; Space$(30-Len(nextComp.PositionX));
Print #1, centerPositionY; Space$(30-Len(nextComp.PositionY));
Print #1, nextComp.IsSMD; Space$(10-Len(nextComp.IsSMD));
Print #1, nextComp.Glued; Space$(10-Len(nextComp.Glued))
Next nextComp
' Unlock the server
UnlockServer
' Close the text file
Close #1
' Start Excel and loads the text file
On Error GoTo noExcel
Dim excelApp As Object
Set excelApp = CreateObject("Excel.Application")
On Error GoTo 0
excelApp.Visible = True
excelApp.Workbooks.OpenText FileName:= filename
excelApp.Rows("1:1").Select
With excelApp.Selection
.Font.Bold = True
.Font.Italic = True
End With
excelApp.Range("A1").Select
Set excelApp = Nothing
End
noExcel:
' Display the text file
Shell "Notepad " & filename, 3
End Sub
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