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NVertexCount 属性（ActiveX）

2024-5-18 19:09| 发布者: admin| 查看: 94| 评论: 0|原作者: admin|来自: AutoCAD

获取 PolygonMesh 在 N 方向上的顶点计数。

支持的平台：仅限 Windows

签名

VBA：

object.NVertexCount

对象

类型：PolygonMesh

此属性应用于的对象。

属性值

只读：是的

类型：整数

介于 2 和 256 之间的正整数。

言论

这是将用于组成如果属性为的 N 列的顶点数。对于任何其他类型，该值将用作列大小。PolygonMeshTypeacSimpleMeshPolygonMeshNDensity

对于简单网格，顶点数无法更改。

例子

VBA：

Sub Example_NVertexCount()
    ' This example creates a 4 X 4 polygonmesh in model space.
    ' It then finds the number of points in the 'N' direction.
    Dim meshObj As AcadPolygonMesh
    Dim mSize, nSize, count As Integer
    Dim points(0 To 47) As Double
    
    ' Create the matrix of points
    points(0) = 0: points(1) = 0: points(2) = 0
    points(3) = 2: points(4) = 0: points(5) = 1
    points(6) = 4: points(7) = 0: points(8) = 0
    points(9) = 6: points(10) = 0: points(11) = 1
    points(12) = 0: points(13) = 2: points(14) = 0
    points(15) = 2: points(16) = 2: points(17) = 1
    points(18) = 4: points(19) = 2: points(20) = 0
    points(21) = 6: points(22) = 2: points(23) = 1
    points(24) = 0: points(25) = 4: points(26) = 0
    points(27) = 2: points(28) = 4: points(29) = 1
    points(30) = 4: points(31) = 4: points(32) = 0
    points(33) = 6: points(34) = 4: points(35) = 0
    points(36) = 0: points(37) = 6: points(38) = 0
    points(39) = 2: points(40) = 6: points(41) = 1
    points(42) = 4: points(43) = 6: points(44) = 0
    points(45) = 6: points(46) = 6: points(47) = 0
      
    mSize = 4: nSize = 4
    
    ' Create a 3Dmesh in model space
    Set meshObj = ThisDrawing.ModelSpace.Add3DMesh(mSize, nSize, points)
    
    ' Change the viewing direction of the viewport to better see the polymesh
    Dim NewDirection(0 To 2) As Double
    NewDirection(0) = -1: NewDirection(1) = -1: NewDirection(2) = 1
    ThisDrawing.ActiveViewport.direction = NewDirection
    ThisDrawing.ActiveViewport = ThisDrawing.ActiveViewport
    ZoomAll
    
    ' Find the NVertexCount for the mesh
    Dim currVertexCount As Integer
    currVertexCount = meshObj.NVertexCount
    MsgBox "The NVertexCount for the mesh is " & meshObj.NVertexCount, , "NVertexCount Example"
    
End Sub

可视化 LISP：

(vl-load-com)
(defun c:Example_NVertexCount()
    ;; This example creates a 4 X 4 polygonmesh in model space.
    ;; It then finds the number of points in the 'N' direction.
    (setq acadObj (vlax-get-acad-object))
    (setq doc (vla-get-ActiveDocument acadObj))
    
    ;; Create the matrix of points
    (setq points (vlax-make-safearray vlax-vbDouble '(0 . 47)))
    (vlax-safearray-fill points '(0 0 0
				  2 0 1
				  4 0 0
				  6 0 1
				  0 2 0
				  2 2 1
				  4 2 0
				  6 2 1
				  0 4 0
				  2 4 1
				  4 4 0
				  6 4 0
				  0 6 0
				  2 6 1
				  4 6 0
				  6 6 0
				 )
    )
      
    (setq mSize 4
          nSize 4)
    
    ;; Create a 3Dmesh in model space
    (setq modelSpace (vla-get-ModelSpace doc))
    (setq meshObj (vla-Add3DMesh modelSpace mSize nSize points))
    
    ;; Change the viewing direction of the viewport to better see the polymesh
    (setq NewDirection (vlax-3d-point -1 -1 1))
    (setq activeViewport (vla-get-ActiveViewport doc))
    (vla-put-Direction activeViewport NewDirection)
    (vla-put-ActiveViewport doc activeViewport)
    (vla-ZoomAll acadObj)
    
    ;; Find the NVertexCount for the mesh
    (setq currVertexCount (vla-get-NVertexCount meshObj))
    (alert (strcat "The NVertexCount for the mesh is " (itoa currVertexCount)))
)