创建二次曲线或三次 NURBS(非均匀有理 B 样条)曲线。 支持的平台:仅窗口 签名工 务 局: RetVal = object.AddSpline(PointsArray, StartTangent, EndTangent) 返回值(RetVal)类型:样条 新创建的对象。Spline 言论“起始切线”和“端切线”参数指定样条曲线两端的切线。默认情况下,样条曲线创建为打开状态。只读属性指示样条是打开还是关闭。Closed 例子工 务 局: Sub Example_AddSpline() ' This example creates a spline object in model space. ' Create the spline 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) = 1: fitPoints(1) = 1: 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) ZoomAll End Sub Visual LISP: (vl-load-com) (defun c:Example_AddSpline() ;; This example creates a spline object in model space. (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)) (setq fitPoints (vlax-make-safearray vlax-vbDouble '(0 . 8))) (vlax-safearray-fill fitPoints '(1 1 0 5 5 0 10 0 0 ) ) ;; Create the spline (setq modelSpace (vla-get-ModelSpace doc)) (setq splineObj (vla-AddSpline modelSpace fitPoints startTan endTan)) (vla-ZoomAll acadObj) ) |
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