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GradientColor1 属性（ActiveX）

2024-5-18 19:21| 发布者: admin| 查看: 21| 评论: 0|原作者: admin|来自: AutoCAD

指定渐变的起始颜色。

支持的平台：仅限 Windows

签名

VBA：

object.GradientColor1

对象

类型：舱口

此属性应用于的对象。

属性值

只读：不

类型：AcCmColor

该对象必须包含以下常量之一，否则将返回错误：AcCmColor

acColorMethodByACI
acColorMethodByBlock

言论

没有其他评论。

例子

VBA：

Sub Example_GradientColor1()
    ' This example changes the value of the GradientColor1 property.
    
    Dim hatchObj As AcadHatch
    Dim patternName As String
    Dim PatternType As Long
    Dim bAssociativity As Boolean
    
    ' Define the hatch
    patternName = "CYLINDER"
    PatternType = acPreDefinedGradient '0
    bAssociativity = True
    
    ' Create the associative Hatch object in model space
    Set hatchObj = ThisDrawing.ModelSpace.AddHatch(PatternType, patternName, bAssociativity, acGradientObject)
    Dim col1 As AcadAcCmColor, col2 As AcadAcCmColor, newColor As AcadAcCmColor
    Set col1 = hatchObj.TrueColor
    Set col2 = hatchObj.TrueColor
    Set newColor = hatchObj.TrueColor
    col1.SetRGB 255, 0, 0
    col2.SetRGB 0, 255, 0
    newColor.SetRGB 0, 100, 0
    hatchObj.GradientColor1 = col1
    hatchObj.GradientColor2 = col2
    
    ' Create the outer boundary for the hatch (a circle)
    Dim outerLoop(0 To 0) As AcadEntity
    Dim center(0 To 2) As Double
    Dim radius As Double
    center(0) = 3: center(1) = 3: center(2) = 0
    radius = 1
    Set outerLoop(0) = ThisDrawing.ModelSpace.AddCircle(center, radius)
    
    ' Append the outerboundary to the hatch object, and display the hatch
    hatchObj.AppendOuterLoop (outerLoop)
    hatchObj.Evaluate
    ThisDrawing.Regen True
    MsgBox "Initial value of GradientColor1 is :" & vbCrLf & _
           "red = " & hatchObj.GradientColor1.Red & vbCrLf & _
           "green = " & hatchObj.GradientColor1.Green & vbCrLf & _
           "blue = " & hatchObj.GradientColor1.Blue

    hatchObj.GradientColor1 = newColor
    MsgBox "New value of GradientColor1 is :" & vbCrLf & _
           "red = " & hatchObj.GradientColor1.Red & vbCrLf & _
           "green = " & hatchObj.GradientColor1.Green & vbCrLf & _
           "blue = " & hatchObj.GradientColor1.Blue
End Sub

可视化 LISP：

(vl-load-com)
(defun c:Example_GradientColor1()
    ;; This example changes the value of the GradientColor1 property.
    (setq acadObj (vlax-get-acad-object)
          doc (vla-get-ActiveDocument acadObj))    
    
    ;; Define the hatch
    (setq patternName "CYLINDER"
          patternType acPreDefinedGradient
          bAssociativity :vlax-true)
    
    ;; Create the associative Hatch object in model space
    (setq modelSpace (vla-get-ModelSpace doc)
          hatchObj (vla-AddHatch modelSpace patternType patternName bAssociativity acGradientObject))

    (setq col1 (vla-get-GradientColor1 hatchObj)
          col2 (vla-get-GradientColor2 hatchObj)
          newColor (vla-get-GradientColor2 hatchObj))

    (vla-SetRGB col1 255 0 0)
    (vla-SetRGB col2 0 255 0)
    (vla-SetRGB newColor 0 100 0)

    (vla-put-GradientColor1 hatchObj col1)
    (vla-put-GradientColor2 hatchObj col2)
    
    ;; Create the outer boundary for the hatch (a circle)
    (setq center (vlax-3d-point 3 3 0)
          radius 1)
    (setq circle (vla-AddCircle modelSpace center radius))

    (setq outerLoop (vlax-make-safearray vlax-vbObject '(0 . 0)))
    (vlax-safearray-put-element outerLoop 0 circle)
    
    ;; Append the outerboundary to the hatch object, and display the hatch
    (vla-AppendOuterLoop hatchObj outerLoop)
    (vla-Evaluate hatchObj)
    (vla-Regen doc :vlax-true)
    (alert (strcat "Initial value of GradientColor1 is :"
                   "\nred = " (itoa (vla-get-Red (vla-get-GradientColor1 hatchObj)))
                   "\ngreen = " (itoa (vla-get-Green (vla-get-GradientColor1 hatchObj)))
                   "\nblue = " (itoa (vla-get-Blue (vla-get-GradientColor1 hatchObj)))))

    (vla-put-GradientColor1 hatchObj newColor)
    (alert (strcat "New value of GradientColor1 is :"
                   "\nred = " (itoa (vla-get-Red (vla-get-GradientColor1 hatchObj)))
                   "\ngreen = " (itoa (vla-get-Green (vla-get-GradientColor1 hatchObj)))
                   "\nblue = " (itoa (vla-get-Blue (vla-get-GradientColor1 hatchObj)))))
)