Пересечение объектов

Свойство IntersectWith
Пример кода
Sub Example_IntersectWith()
    ' This example creates a line and circle and finds the points at
    ' which they intersect.
    ' Create the line
    Dim lineObj As AcadLine
    Dim startPt(0 To 2) As Double
    Dim endPt(0 To 2) As Double
    startPt(0) = 1: startPt(1) = 1: startPt(2) = 0
    endPt(0) = 5: endPt(1) = 5: endPt(2) = 0
    Set lineObj = ThisDrawing.ModelSpace.AddLine(startPt, endPt)
    ' Create the circle
    Dim circleObj As AcadCircle
    Dim centerPt(0 To 2) As Double
    Dim radius As Double
    centerPt(0) = 3: centerPt(1) = 3: centerPt(2) = 0
    radius = 1
    Set circleObj = ThisDrawing.ModelSpace.AddCircle(centerPt, radius)
    ZoomAll
    ' Find the intersection points between the line and the circle
    Dim intPoints As Variant
    intPoints = lineObj.IntersectWith(circleObj, acExtendNone)
    ' Print all the intersection points
    Dim I As Integer, j As Integer, k As Integer
    Dim str As String
    If VarType(intPoints) <> vbEmpty Then
        For I = LBound(intPoints) To UBound(intPoints)
            str = "Intersection Point[" & k & "] is: " & intPoints(j) & "," & intPoints(j + 1) & "," & intPoints(j + 2)
            MsgBox str, , "IntersectWith Example"
            str = ""
            I = I + 2
            j = j + 3
            k = k + 1
        Next
    End If
End Sub