CAD开发者社区 › 首页 ›AutoCAD开发文档› AutoCAD 2020 开发者帮助 › 查看内容

AutoCAD 2020 开发者帮助

Origin 属性（ActiveX）

2024-5-18 18:22| 发布者: admin| 查看: 65| 评论: 0|原作者: admin|来自: AutoCAD

Origin 属性（ActiveX）

指定 WCS 坐标中 UCS、块、剖面线或栅格影像的原点。

支持的平台：仅限 Windows

签名

VBA：

object.Origin

对象

类型：块、GeomapImage、填充、模型空间、PaperSpace、RasterImage、UCS、擦除

此属性应用于的对象。

属性值

只读：不

类型：变体（双元素或三元素的双精度数组）

2D 点：表示相对于媒体左下角的原点的 X 和 Y 值。

3D 点：指定对象原点的 3D WCS 坐标。

言论

填充：此属性是填充图元模式的原点坐标。

例子

VBA：

Sub Example_Origin()
    ' This example creates a UCS and returns its origin.

    Dim viewportObj As AcadViewport
    
    ' Set the viewportObj variable to the activeviewport
    Set viewportObj = ThisDrawing.ActiveViewport
    
    ' Create a new UCS with origin 2, 2, 0
    Dim ucsObj As AcadUCS
    Dim origin(0 To 2) As Double
    Dim xAxisPoint(0 To 2) As Double
    Dim yAxisPoint(0 To 2) As Double
    
    origin(0) = 2: origin(1) = 2: origin(2) = 0
    xAxisPoint(0) = 3: xAxisPoint(1) = 2: xAxisPoint(2) = 0
    yAxisPoint(0) = 2: yAxisPoint(1) = 3: yAxisPoint(2) = 0
    
    Set ucsObj = ThisDrawing.UserCoordinateSystems.Add(origin, xAxisPoint, yAxisPoint, "UCS1")
    ThisDrawing.ActiveUCS = ucsObj
    viewportObj.UCSIconOn = True
    viewportObj.UCSIconAtOrigin = True
    ThisDrawing.ActiveViewport = viewportObj
    
    ' Display the current origin for the new UCS
    MsgBox "The origin of the UCS is: " & ucsObj.origin(0) & ", " & ucsObj.origin(1) & ", " & ucsObj.origin(2), , "Origin Example"

    ' Change the origin of the UCS
    origin(0) = 4: origin(1) = 4: origin(2) = 0
    ucsObj.origin = origin
    
    ' Reset the active UCS and viewport to see the change
    ThisDrawing.ActiveUCS = ucsObj
    ThisDrawing.ActiveViewport = viewportObj
    
    MsgBox "The origin of the UCS is now: " & ucsObj.origin(0) & ", " & ucsObj.origin(1) & ", " & ucsObj.origin(2), , "Origin Example"
    
End Sub

可视化 LISP：

(vl-load-com)
(defun c:Example_Origin()
    ;; This example creates a UCS and returns its origin.
    (setq acadObj (vlax-get-acad-object))
    (setq doc (vla-get-ActiveDocument acadObj))
  
    ;; Set the viewportObj variable to the activeviewport
    (setq viewportObj (vla-get-ActiveViewport doc))
    
    ;; Create a new UCS with origin 2, 2, 0
    (setq origin (vlax-3d-point 2 2 0)
          xAxisPoint (vlax-3d-point 3 2 0)
          yAxisPoint (vlax-3d-point 2 3 0))
    
    (setq ucsObj (vla-Add (vla-get-UserCoordinateSystems doc) origin xAxisPoint yAxisPoint "UCS1"))
    (vla-put-ActiveUCS doc ucsObj)
    (vla-put-UCSIconOn viewportObj :vlax-true)
    (vla-put-UCSIconAtOrigin viewportObj :vlax-true)
    (vla-put-ActiveViewport doc viewportObj)
    
    ;; Display the current origin for the new UCS
    (alert (strcat "The origin of the UCS is: " (rtos (vlax-safearray-get-element (vlax-variant-value (vla-get-Origin ucsObj)) 0) 2) ", "
                                                (rtos (vlax-safearray-get-element (vlax-variant-value (vla-get-Origin ucsObj)) 1) 2) ", "
                                                (rtos (vlax-safearray-get-element (vlax-variant-value (vla-get-Origin ucsObj)) 2) 2)))

    ;; Change the origin of the UCS
    (setq origin (vlax-3d-point 4 4 0))
    (vla-put-Origin ucsObj origin)
    
    ;; Reset the active UCS and viewport to see the change
    (vla-put-ActiveUCS doc ucsObj)
    (vla-put-ActiveViewport doc viewportObj)
    
    (alert (strcat "The origin of the UCS is now: " (rtos (vlax-safearray-get-element (vlax-variant-value (vla-get-Origin ucsObj)) 0) 2) ", "
                                                    (rtos (vlax-safearray-get-element (vlax-variant-value (vla-get-Origin ucsObj)) 1) 2) ", "
                                                    (rtos (vlax-safearray-get-element (vlax-variant-value (vla-get-Origin ucsObj)) 2) 2)))
)