Question

我想用动画旋转自定义形状。当我运行我的应用程序时，我在我的即时窗口中收到此消息：

BindingExpression路径错误：'object'上找不到'Angle'属性 ''MatrixTransform'（HashCode = 16493105）'。空

我的形状

Dim myPointerPath = New Path()
    Dim myPointerPathGeometry = New PathGeometry()
    Dim myPointerPathFigure = New PathFigure()
    Dim leftLine As New LineSegment
    Dim rightLine As New LineSegment

    myPointerPathFigure.StartPoint = New Point(Me.left + (Me.width / 2), Me.top + (Me.width / 60))

    leftLine.Point = New Point(Me.left * 1.8, Me.top)
    rightLine.Point = New Point(Me.left + (Me.width / 2), Me.top - Me.width / 60)

    myPointerPathFigure.Segments.Add(leftLine)
    myPointerPathFigure.Segments.Add(rightLine)
    myPointerPathGeometry.Figures.Add(myPointerPathFigure)
    myPointerPath.Data = myPointerPathGeometry
    myPointerPath.Stroke = Me.pointerColor
    myPointerPath.Fill = Me.pointerColor

    myCanvas.Children.Add(myPointerPath)

    Me.pointerShape = myPointerPathGeometry

对于单行形状，此代码会为旋转设置动画：

Public Sub drawPointerAtValue(ByVal p_value As Double)

    Dim rotator = New RotateTransform(p_value)
    Dim da = New DoubleAnimation(0, 180, New Duration(TimeSpan.FromSeconds(2)))
    Dim storyboard = New Storyboard()

    rotator.CenterX = pointerLine.X1
    rotator.CenterY = pointerLine.Y1

    storyboard.Children.Add(da)
    storyboard.SetTarget(da, pointerLine)
    storyboard.Duration = da.Duration
    storyboard.SetTargetProperty(da, New PropertyPath("RenderTransform.Angle"))
    storyboard.AccelerationRatio = 0.2
    storyboard.DecelerationRatio = 0.2

    da.to = p_value
    storyboard.Begin()
End Sub

这是我的自定义形状（2线形）的旋转动画的代码

Public Sub rotateShape(ByVal p_value As Double)
        Dim rotator = New RotateTransform(p_value)
        Dim da = New DoubleAnimation(0, 180, New Duration(TimeSpan.FromSeconds(2)))
        Dim storyboard = New Storyboard()

        rotator.CenterX = Me.left + (Me.width / 2)
        rotator.CenterY = Me.top

        storyboard.Children.Add(da)
        storyboard.SetTarget(da, pointerShape)
        storyboard.Duration = da.Duration
        storyboard.SetTargetProperty(da, New PropertyPath("Transform.Angle"))
        storyboard.AccelerationRatio = 0.2
        storyboard.DecelerationRatio = 0.2
            da.To = p_value
        storyboard.Begin()
    End Sub

Answer 1

我通过将形状更改为多边形而不是使用PathGeometry来实现它。

File filename = new File("E:/Test.xlsx");
FileInputStream isr= new FileInputStream(filename);

Workbook book1 = new XSSFWorkbook(isr);
Sheet sheet = book1.getSheetAt(0);  
Iterator<Row> rowItr = sheet.rowIterator();

WPF几何旋转动画

1 个答案: