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Degree2 属性（ActiveX）

2024-5-18 18:45| 发布者: admin| 查看: 91| 评论: 0|原作者: admin|来自: AutoCAD

Degree2 属性（ActiveX）

指定样条的多项式表示的度数。

支持的平台：仅限 Windows

签名

VBA：

object.Degree2

对象

类型：样条曲线

此属性应用于的对象。

属性值

只读：不

类型：整数

介于 1 和 25 之间的整数（含 1 和 25）。

言论

样条曲线的阶数等于样条曲线的度数加一（+1）。

例子

VBA：

Sub Example_Degree()
    ' This example creates a spline and returns the degree
    ' of the spline's polynomial representation.
    
    Dim splineObj As AcadSpline
    Dim startTan(0 To 2) As Double
    Dim endTan(0 To 2) As Double
    Dim fitPoints(0 To 8) As Double
    
    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
    Set splineObj = ThisDrawing.ModelSpace.AddSpline(fitPoints, startTan, endTan)
    
    ThisDrawing.Regen True
    MsgBox "The degree of this Spline's polynomial representation is: " & splineObj.Degree, vbInformation
End Sub

可视化 LISP：

(vl-load-com)
(defun c:Example_Degree()
    ;; This example creates a spline and returns the degree
    ;; of the spline's polynomial representation.
    (setq acadObj (vlax-get-acad-object))
    (setq doc (vla-get-ActiveDocument acadObj))
  
    ;; Define the spline
    (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
				    )
    )

    (setq modelSpace (vla-get-ModelSpace doc))
    (setq splineObj (vla-AddSpline modelSpace fitPoints startTan endTan))

    (vla-ZoomExtents acadObj)
    (vla-Regen doc :vlax-true)
    (alert (strcat "The degree of this Spline's polynomial representation is: " (itoa (vla-get-Degree splineObj))))
)