用户指定的点可用于获取封闭区域的面积。 您可以测量由用户指定的 2D 或 3D 点定义的任意封闭区域。这些点必须是共面的。 从用户处获取点指定的区域
计算由用户输入的点定义的面积本示例提示用户输入五个点。然后从输入的点创建一条折线。折线闭合,折线区域显示在消息框中。 Sub Ch3_CalculateDefinedArea() Dim p1 As Variant Dim p2 As Variant Dim p3 As Variant Dim p4 As Variant Dim p5 As Variant ' Get the points from the user p1 = ThisDrawing.Utility.GetPoint(, vbCrLf & "First point: ") p2 = ThisDrawing.Utility.GetPoint(p1, vbCrLf & "Second point: ") p3 = ThisDrawing.Utility.GetPoint(p2, vbCrLf & "Third point: ") p4 = ThisDrawing.Utility.GetPoint(p3, vbCrLf & "Fourth point: ") p5 = ThisDrawing.Utility.GetPoint(p4, vbCrLf & "Fifth point: ") ' Create the 2D polyline from the points Dim polyObj As AcadLWPolyline Dim vertices(0 To 9) As Double vertices(0) = p1(0): vertices(1) = p1(1) vertices(2) = p2(0): vertices(3) = p2(1) vertices(4) = p3(0): vertices(5) = p3(1) vertices(6) = p4(0): vertices(7) = p4(1) vertices(8) = p5(0): vertices(9) = p5(1) Set polyObj = ThisDrawing.ModelSpace.AddLightWeightPolyline(vertices) polyObj.Closed = True ThisDrawing.Application.ZoomAll ' Display the area for the polyline MsgBox "The area defined by the points is " & _ polyObj.Area, , "Calculate Defined Area" End Sub |
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