Knots プロパティ(ActiveX)

スプラインのノット ベクトルを取得します。

サポートされているプラットフォーム: Windows のみ

構文と要素

VBA:

object.Knots

object

タイプ: Spline

このプロパティが適用されるオブジェクト。

プロパティの値

読み込み専用: いいえ

タイプ: バリアント型(倍精度実数の 3 要素配列)

スプラインのノット ベクトル。

注意

追加の注意はありません。

例

VBA:

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)))
)