结属性 （ActiveX）

签名

工 务 局：

object.Knots

对象

类型：样条

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）

样条的节点向量。

言论

没有额外的评论。

例子

工 务 局：

Sub Example_Knots()
    ' This example creates a Spline object in model space and
    ' returns the knot vector for the new Spline

    Dim splineObj As AcadSpline
    Dim startTan(0 To 2) As Double, endTan(0 To 2) As Double
    Dim fitPoints(0 To 8) As Double
    Dim knotVector As Variant

    ' Define the Spline object
    startTan(0) = 0.5: startTan(1) = 0.5: startTan(2) = 0
    endTan(0) = 0.5: endTan(1) = 0.5: endTan(2) = 0
    fitPoints(0) = 0: fitPoints(1) = 0: fitPoints(2) = 0: fitPoints(3) = 5
    fitPoints(4) = 5: fitPoints(5) = 0: fitPoints(6) = 10: fitPoints(7) = 0: fitPoints(8) = 0
    
    ' Create new Spline object
    Set splineObj = ThisDrawing.ModelSpace.AddSpline(fitPoints, startTan, endTan)
    ThisDrawing.Application.ZoomAll
    
    ' Display the knot vector of the new Spline
    knotVector = splineObj.Knots
    MsgBox "The knot vector of the new Spline is: " & vbCrLf & _
           knotVector(0) & vbCrLf & _
           knotVector(1) & vbCrLf & _
           knotVector(2)
End Sub

Visual LISP：

(vl-load-com)
(defun c:Example_Knots()
    ;; This example creates a Spline object in model space and
    ;; returns the knot vector for the new Spline
    (setq acadObj (vlax-get-acad-object))
    (setq doc (vla-get-ActiveDocument acadObj))
    
    ;; Define the Spline object
    (setq startTan (vlax-3d-point 0.5 0.5 0)
          endTan (vlax-3d-point 0.5 0.5 0)
          fitPoints (vlax-make-safearray vlax-vbDouble '(0 . 8)))
    (vlax-safearray-fill fitPoints '(0 0 0
				     5 5 0
				     10 0 0
				    )
    )
    
    ;; Create new Spline object
    (setq modelSpace (vla-get-ModelSpace doc))
    (setq splineObj (vla-AddSpline modelSpace fitPoints startTan endTan))
    (vla-ZoomAll acadObj)

    ;; Display the knot vector of the new Spline
    (setq knotVector (vlax-safearray->list (vlax-variant-value (vla-get-Knots splineObj))))
    (alert (strcat "The knot vector of the new Spline is: "
                   "\n" (rtos (nth 0 knotVector) 2)
                   "\n" (rtos (nth 1 knotVector) 2)
                   "\n" (rtos (nth 2 knotVector) 2)))
)