ExtLine1StartPoint Property （ActiveX）

签名

工 务 局：

object.ExtLine1StartPoint

对象

类型：暗角

此属性适用的对象。

属性值

只读：不

类型：变体（双精度的三元素数组）

表示第一条延伸线起点的 3D 坐标。

言论

与属性等于方法中的与参数。延伸线最初是从与位置到尺寸线的交点绘制的。AutoCAD 将尺寸线绘制为延伸线之间的弧。ExtLine1StartPointExtLine2StartPointFirstEndPointSecondEndPointAddDimAngularFirstEndPointSecondEndPoint

例子

工 务 局：

Sub Example_ExtLine1StartPoint()
    ' This example creates an angular dimension. It then changes
    ' the location of the ExtLine1StartPoint.
    
    Dim dimObj As AcadDimAngular
    Dim angVert(0 To 2) As Double
    Dim FirstPoint(0 To 2) As Double
    Dim SecondPoint(0 To 2) As Double
    Dim TextPoint(0 To 2) As Double
    
    ' Define the dimension
    angVert(0) = 0#: angVert(1) = 5#: angVert(2) = 0#
    FirstPoint(0) = 1#: FirstPoint(1) = 7#: FirstPoint(2) = 0#
    SecondPoint(0) = 1#: SecondPoint(1) = 3#: SecondPoint(2) = 0#
    TextPoint(0) = 3#: TextPoint(1) = 5#: TextPoint(2) = 0#
    
    ' Create the angular dimension in model space
    Set dimObj = ThisDrawing.ModelSpace.AddDimAngular(angVert, FirstPoint, SecondPoint, TextPoint)
    ZoomAll
    MsgBox "The current value of ExtLine1StartPoint is " & dimObj.ExtLine1StartPoint(0) & ", " & dimObj.ExtLine1StartPoint(1) & ", " & dimObj.ExtLine1StartPoint(2), vbInformation, "ExtLine1StartPoint Example"
    
    ' Change the start point of the first extension line
    FirstPoint(0) = 0: FirstPoint(1) = 3: FirstPoint(2) = 0
    dimObj.ExtLine1StartPoint = FirstPoint
    dimObj.Update
    
    ' Return the start point of the first extension line
    ' Note that the return value is a Variant
    Dim retPnt As Variant
    retPnt = dimObj.ExtLine1StartPoint
    MsgBox "The new value of ExtLine1StartPoint is " & dimObj.ExtLine1StartPoint(0) & ", " & dimObj.ExtLine1StartPoint(1) & ", " & dimObj.ExtLine1StartPoint(2), vbInformation, "ExtLine1StartPoint Example"
End Sub

Visual LISP：

(vl-load-com)
(defun c:Example_ExtLine1StartPoint()
    ;; This example creates an angular dimension. It then changes
    ;; the location of the ExtLine1StartPoint.
    (setq acadObj (vlax-get-acad-object))
    (setq doc (vla-get-ActiveDocument acadObj))
    
    ;; Define the dimension
    (setq AngleVertex (vlax-3d-point 0 5 0)
          FirstPoint (vlax-3d-point 1 7 0)
          SecondPoint (vlax-3d-point 1 3 0)
          TextPoint (vlax-3d-point 3 5 0))

    ;; Create the angular dimension in model space
    (setq modelSpace (vla-get-ModelSpace doc))  
    (setq dimObj (vla-AddDimAngular modelSpace AngleVertex FirstPoint SecondPoint TextPoint))
    (vla-ZoomAll acadObj)

    (setq extLineStartPoint (vlax-safearray->list (vlax-variant-value (vla-get-ExtLine1StartPoint dimObj))))
    (alert (strcat "The current value of ExtLine1StartPoint is " (rtos (nth 0 extLineStartPoint) 2) ", "
		                                                 (rtos (nth 1 extLineStartPoint) 2) ", "
		                                                 (rtos (nth 2 extLineStartPoint) 2)))
    
    ;; Change the start point of the first extension line
    (setq FirstPoint (vlax-3d-point 0 3 0))
    (vla-put-ExtLine1StartPoint dimObj FirstPoint)
    (vla-Update dimObj)
    
    ;; Return the start point of the first extension line
    ;; Note that the return value is a Variant
    (setq retPnt (vlax-safearray->list (vlax-variant-value (vla-get-ExtLine1StartPoint dimObj))))
    (alert (strcat "The new value of ExtLine1StartPoint is " (rtos (nth 0 retPnt) 2) ", "
		                                             (rtos (nth 1 retPnt) 2) ", "
		                                             (rtos (nth 2 retPnt) 2)))
)