Question

i am trying to provide the Zooming functionality in camera app, for this purpose I am using MediaCapture class, all the other capabilities of MediaCapture are working properly except of Zoom, I am using the following code to achieve the zoom:

private void zoomSlider_ValueChanged(object sender, Windows.UI.Xaml.Controls.Primitives.RangeBaseValueChangedEventArgs e)
{
    m_mediaCaptureMgr.VideoDeviceController.Zoom.TrySetValue(zoomSlider.Value);
}

But its not working
plz tell me how to do it??

EDIT: Code formatting correction

Answer 1

U can also Zoom camera view with like this in XAML

<CaptureElement x:Name="previewElement1" Width="1366" Height="672">
                <CaptureElement.RenderTransform>
                    <ScaleTransform  x:Name="zoom"/>
                </CaptureElement.RenderTransform>
                </CaptureElement>

<Slider  Width="30" Height="300" Name="zoomSlider" ValueChanged="zoomSlider_ValueChanged_1" />

and in C#

private void zoomSlider_ValueChanged_1(object sender, Windows.UI.Xaml.Controls.Primitives.RangeBaseValueChangedEventArgs e)
{
    try
    {
        zoom.ScaleX = zoomSlider.Value;
        zoom.ScaleY = zoomSlider.Value;
        zoom.CenterX = 683;
        zoom.CenterY = 384;
    }
    catch (Exception)
    {
    }
}