WPF ScaleTransform in VB.NET

Scaling is a process of stretching or shrinking an element. The ScaleTransform scales an element by a given factor.
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Scaling is a process of stretching or shrinking an element. The ScaleTransform scales an element by a given factor.

The ScaleTransform object in WPF represents ScaleTransform. The ScaleX and ScaleY properties represent the factor related to x and y coordinates respectively. The CenterX and CenterY properties represent the X and Y coordinates of the center point. By default, a ScaleTransform is centered at the point (0,0), which corresponds to the upper-left corner of the rectangle.

The code listed in Listing creates two rectangles with same position and size accepts the second rectangle is scaled to 1.5 and 2.0 toward the x and y axis respectively. Scaling value 1.5 represents 150% increase and 2.0 represents 200% increase.

<Rectangle Width="200" Height="50" Fill="Yellow" Margin="61,27,117,184" />
        <Rectangle Width="200" Height="50" Fill="Blue" Opacity="0.5" Margin="53,141,125,70">
            <Rectangle.RenderTransform>
                <ScaleTransform ScaleX="1.5" ScaleY="2.0" CenterX="50" CenterY="50" />
            </Rectangle.RenderTransform>
</
Rectangle>

The output of Listing looks like Figure 1.

ScaleImg.jpg
 

Figure 1

The code listed in Listing creates a RotateTransform object dynamically and set it as RenderTransform property of a Rectangle. The output looks like Figure .

    Private Sub ScaleTransformSample()
        Dim originalRectangle As New Rectangle()
        originalRectangle.Width = 200
        originalRectangle.Height = 50
        originalRectangle.Fill = Brushes.Yellow
        LayoutRoot.Children.Add(originalRectangle)

        Dim scaledRectangle As New Rectangle()
        scaledRectangle.Width = 200
        scaledRectangle.Height = 50
        scaledRectangle.Fill = Brushes.Blue
        scaledRectangle.Opacity = 0.5
        Dim scaleTransform1 As New ScaleTransform(1.5, 2.0, 50, 50)
        scaledRectangle.RenderTransform = scaleTransform1

        LayoutRoot.Children.Add(scaledRectangle)
    End Sub

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