VBA - Multiple Block Along Line

[wannabe]

Please could someone tell me how I should set about producing a VBA macro that will, operated by a form, allow me to select a polyline,line or 3d polyline; then select a block; and finally select the spacing between the blocks to be inserted on the selected line,poly,3dpoly etc.

 

One Issue I may have is that I will need the spacing to be X coordinate only, and I will need to ignore the Z coordinates.

 

The drawing is a plan view which, like I said above, will have some contours that I need to totally ignore, hence the point above.

 

Ideally I just want to be pushed and nudged in the right direction and will try and work out the code as much as possible myself (judging by other threads I will probably need a lot more help from you experts ).

 

Thanks in advance.

[borgunit]

Have you started any part of the macro yet? And could we see it?

[wannabe]

No I havent started now it seems the measure command can do all this anyway as long as I make a copy of a 3d poly and remove its Z coords.

[BIGAL]

This bit of code places a block "holden" along a poly line based on the spacing between the vertice points just simply divided into intervals you could modify to work on a fix spacing distance instead. A good start point. Also search here for batterticks

 

For those interested its used to check if a car bottoms out in a vehicle crossing.

 

Sub draw_vehicle()
Dim CAR As String
Dim arcobj As AcadArc
Dim oPoly As AcadEntity
Dim blkobj As AcadEntity
Dim retVal As Variant
Dim snapPt As Variant
Dim oCoords As Variant
Dim blpnt1() As Variant
ReDim blpnt1(100)
Dim blpnt2() As Variant
ReDim blpnt2(100)
Dim vertPt(0 To 2) As Double
Dim Pt1(0 To 2) As Double
Dim Pt2(0 To 2) As Double
Dim newPt(0 To 2) As Double
Dim iCnt, w, x, y, z As Integer
Dim cRad, interval, blkangle As Double
Dim circObj As AcadCircle
Dim lineObj As AcadLine
On Error GoTo Something_Wrong
For Each Item In ThisDrawing.Blocks
If Item.Name = "holden" Then GoTo continue_on
Next Item
' exits out of program
GoTo Exit_out
continue_on:
w = 1
ThisDrawing.Utility.GetEntity oPoly, snapPt, vbCr & "Select polyline :"
If oPoly.ObjectName = "AcDbPolyline" Then
oCoords = oPoly.Coordinates
Else: MsgBox "This object is not a polyline!"
Exit Sub
End If
interval = CDbl(InputBox("Enter interval:", , 1#))
If interval < 1 Then
interval = 1
End If
For iCnt = 0 To UBound(oCoords) - 2 Step 2
Pt1(0) = oCoords(iCnt): Pt1(1) = oCoords(iCnt + 1): Pt1(2) = 0#
newPt(0) = Pt1(0)
newPt(1) = Pt1(1)
newPt(2) = 0#
iCnt = iCnt + 2
Pt2(0) = oCoords(iCnt): Pt2(1) = oCoords(iCnt + 1): Pt2(2) = 0#
x = (Pt1(0) - Pt2(0)) / interval
y = (Pt1(1) - Pt2(1)) / interval
'reset back 2 values
iCnt = iCnt - 2
cRad = 2.8
startang = 4.712
endang = 1.57
CAR = "HOLDEN"
For z = 1 To interval
vertPt(0) = newPt(0) - x
vertPt(1) = newPt(1) - y
vertPt(2) = 0#
'blpnt1(w) = vertPt
Set arcobj = ThisDrawing.ModelSpace.AddArc(vertPt, cRad, endang, startang)
retval2 = arcobj.IntersectWith(oPoly, acExtendOtherEntity)
arcobj.Delete
Set arcobj = Nothing
blkangle = ThisDrawing.Utility.AngleFromXAxis(retval2, vertPt)
Set blkobj = ThisDrawing.ModelSpace.InsertBlock(vertPt, CAR, 1#, 1#, 1#, blkangle)
Set blkobj = Nothing
w = w + 1
newPt(0) = newPt(0) - x
newPt(1) = newPt(1) - y
Next z
Next iCnt
Something_Wrong:
MsgBox Err.Description
Exit_out:
End Sub