使用 WPF WriteableBitmap.BackBuffer 绘制线条

您是否知道任何库提供使用 WPF WriteableBitmap 和理想情况下 BackBuffer 绘制简单形状（线条和可选的其他形状）的方法？ 我知道有一个针对 silverlight 的 WriteableBitmapEx 项目，但是有 WPF 等效项吗？

我想这就是我问题的答案:)

_plotBitmap.Lock();

var b = new Bitmap(_plotBitmap.PixelWidth,
                   _plotBitmap.PixelHeight,
                   _plotBitmap.BackBufferStride,
                   System.Drawing.Imaging.PixelFormat.Format24bppRgb, 
                   _plotBitmap.BackBuffer);

using(var bitmapGraphics = System.Drawing.Graphics.FromImage(b))
{
    bitmapGraphics.SmoothingMode = SmoothingMode.HighSpeed;
    bitmapGraphics.InterpolationMode = InterpolationMode.NearestNeighbor;
    bitmapGraphics.CompositingMode = CompositingMode.SourceCopy;
    bitmapGraphics.CompositingQuality = CompositingQuality.HighSpeed;
    bitmapGraphics.DrawLine(Pens.Gold,2,2,222,222);
}

_plotBitmap.AddDirtyRect(new Int32Rect(0,0,_plotBitmap.PixelWidth,_plotBitmap.PixelHeight));
_plotBitmap.Unlock();