The following VBA example distorts a curve by moving each of its nodes by a random offset.
Sub Test()
Dim x As Double, y As Double, max As Double
Dim n As Node
If ActiveShape Is Nothing Then
MsgBox "Select an object first", vbCritical
Exit Sub
End If
If ActiveShape.Type <> cdrCurveShape Then ActiveShape.ConvertToCurves
If ActiveShape.Type <> cdrCurveShape Then
MsgBox "Unable to convert the object to curve", vbCritical
Exit Sub
End If
ActiveShape.GetSize x, y
If x < y Then max = y / 10 Else max = x / 10
For Each n In ActiveShape.Curve.Nodes
n.Move (Rnd() - 0.5) * max, (Rnd() - 0.5) * max
Next n
End Sub