Area, Node Count and Perimeter Length of a Closed Curve

Does anyone know of a way to calculate the area, number of nodes and perimeter length of a closed curve using VBA in Corel Draw 12?

I know there are CAD add-in tools that do this...but I need to perform these calculations on approximately 4000 shapes and the CAD tools require that you manually click a button to get the data in each drawing file.  I would like to automate the process by simply passing the data directly into a database or excel worksheet.

Any ideas?

Graham H.

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  • Here's what I have so far for node count and perimeter length.  The area part doesnt work..I'm still working on it and came across my post as I starting again in Google..."Area, Node Count and Perimeter Length of a Closed Curve" -- I thought it was the answer! but no..

        Dim doc1 As Document
        Set doc1 = OpenDocument("W:\Shapes\Drawings\Cornice\SC-001.cdr")

        Dim perimeter, surface As Double
        Dim nodes As Integer
       
        Dim i As Integer

        Dim segment As New SegmentRange
        Dim seg As segment
       
        doc1.Pages(3).Layers("Layer 1").Shapes(1).CreateSelection

        i = 0

        'perimeter

        For Each seg In ActiveShape.curve.Segments
       
            i = i + 1
       
            If seg.Type = cdrCurveSegment Then
               
                segment.Add seg
               
            End If
       
        Next seg
       
        perimeter = segment.length
       
        MsgBox "All segment segments have total length of " & segment.length & """"
       
        'area
       
        surface = ActiveShape.curve.area 'doesn't work

        'nodes

        nodes = i

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