wpf - 使用 WPF WriteableBitmap.BackBuffer 绘制线条

Question

您是否知道任何提供使用 WPF WriteableBitmap 和理想的 BackBuffer 绘制简单形状（线条和可选的其他形状）的方法的库？我知道 Silverlight 有一个 WriteableBitmapEx 项目，但是有 WPF 等价物吗？

Answer 1

我想这是我问题的答案:)

_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();

Answer 2

您似乎正在使用 Bitmap，但要求使用 WriteableBitmap 的解决方案。WPF 有一个 WriteableBitmapEx。