private CanvasRenderTarget CreateOpacityMask(ICanvasResourceCreator resourceCreator, double width, double height)
{
var device = CanvasDevice.GetSharedDevice();
var target = new CanvasRenderTarget(device, (float)width, (float)height, 96);
using (var session = target.CreateDrawingSession())
{
session.Clear(Colors.Transparent);
_maskGeometry.Add(ResourcesFactory.CreateCloud(session));
_maskGeometry.Add(ResourcesFactory.CreateCircle(session));
foreach (var geometry in _maskGeometry)
{
session.FillGeometry(geometry, Colors.White);
}
}
return(target);
}
private void Canvas_CreateResources(Microsoft.Graphics.Canvas.UI.Xaml.ICanvasAnimatedControl sender, Microsoft.Graphics.Canvas.UI.CanvasCreateResourcesEventArgs args)
{
_maskGeometry.Add(ResourcesFactory.CreateCloud(sender));
_maskGeometry.Add(ResourcesFactory.CreateCircle(sender));
}