本文整理汇总了C#中CanvasRenderTarget.GetPixelBytes方法的典型用法代码示例。如果您正苦于以下问题：C# CanvasRenderTarget.GetPixelBytes方法的具体用法？C# CanvasRenderTarget.GetPixelBytes怎么用？C# CanvasRenderTarget.GetPixelBytes使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CanvasRenderTarget的用法示例。
在下文中一共展示了CanvasRenderTarget.GetPixelBytes方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: DrawEffect
public async void DrawEffect()
{
if (Target == null)
{
return;
}
if (MainContainer != null)
{
foreach (var child in MainContainer.Children)
{
if (child is SpriteVisual)
{
(child as SpriteVisual).Brush.Dispose();
}
}
RemoveEffect();
}
RenderTargetBitmap bitmap = new RenderTargetBitmap();
await bitmap.RenderAsync(Target);
var pixels = (await bitmap.GetPixelsAsync()).ToArray();
Size srcSize = new Size(bitmap.PixelWidth, bitmap.PixelHeight);
Size decSize = new Size((int)BlurAmount * 10 + bitmap.PixelWidth, (int)BlurAmount * 10 + bitmap.PixelHeight);
Size blurSize = new Size(decSize.Width - srcSize.Width, decSize.Height - srcSize.Height);
Point transform = new Point(blurSize.Width/2, blurSize.Height/2);
transform.X += Math.Cos(Direction / 360 * 2 * Math.PI) * Depth;
transform.Y += Math.Sin(Direction / 360 * 2 * Math.PI) * Depth;
ContainerVisual visual = Target.GetVisual() as ContainerVisual;
Compositor compositor = visual.Compositor;
CanvasDevice device = CanvasDevice.GetSharedDevice();
CanvasRenderTarget offscreen = new CanvasRenderTarget(device, (int)decSize.Width, (int)decSize.Height, 96);
using (CanvasDrawingSession ds = offscreen.CreateDrawingSession())
{
Transform2DEffect finalEffect = new Transform2DEffect()
{
Source = new Microsoft.Graphics.Canvas.Effects.ShadowEffect()
{
Source = CanvasBitmap.CreateFromBytes(ds, pixels, (int)srcSize.Width, (int)srcSize.Height,
DirectXPixelFormat.B8G8R8A8UIntNormalized),
BlurAmount = (float)BlurAmount,
ShadowColor = ShadowColor
},
TransformMatrix = Matrix3x2.CreateTranslation((float)blurSize.Width / 2, (float)blurSize.Height / 2)
};
ds.DrawImage(finalEffect);
}
var effectPixels = offscreen.GetPixelBytes();
var imageFactory =
Microsoft.UI.Composition.Toolkit.CompositionImageFactory.CreateCompositionImageFactory(compositor);
var effectImage = imageFactory.CreateImageFromPixels(effectPixels, (int)decSize.Width, (int)decSize.Height);
var effectbrush = compositor.CreateSurfaceBrush(effectImage.Surface);
var effectVisual = compositor.CreateSpriteVisual();
effectVisual.Brush = effectbrush;
effectVisual.Offset = new Vector3( -(float)transform.X, -(float)transform.Y, 0);
effectVisual.Size = new Vector2((float)decSize.Width, (float)decSize.Height);
var srcImage = imageFactory.CreateImageFromPixels(pixels, (int)srcSize.Width, (int)srcSize.Height);
var srcbrush = compositor.CreateSurfaceBrush(srcImage.Surface);
var srcVisual = compositor.CreateSpriteVisual();
srcVisual.Brush = srcbrush;
srcVisual.Offset = new Vector3(0, 0, 0);
srcVisual.Size = new Vector2((int)srcSize.Width, (int)srcSize.Height);
if (MainContainer == null)
{
MainContainer = compositor.CreateContainerVisual();
ElementCompositionPreview.SetElementChildVisual(Target, MainContainer);
}
MainContainer.Children.InsertAtTop(srcVisual);
MainContainer.Children.InsertAtBottom(effectVisual);
}