public static void DrawLine(this IPixelCanvas pc, int x1, int y1, int x2, int y2, System.Windows.Media.Color color, double width)
{
var l = new Shapes.Line();
l.X1 = x1;
l.Y1 = y1;
l.X2 = x2;
l.Y2 = y2;
l.Stroke = new SolidColorBrush(color);
l.StrokeThickness = width;
l.Arrange(pc.Bounds.ToRect());
var sw = Stopwatch.StartNew();
var bitmap_source = l.RenderToBitmap(pc.Bounds.ToSize(), new Point(x1, y1));
var pixels = new int[pc.Length];
bitmap_source.CopyPixels(pixels, pc.Stride, 0);
var pc2 = new PixelArrayCanvas(pc.Width, pc.Height);
pc2.ReplaceFromPixels(pixels, pc.Width, pc.Height);
pc.Blit(pc2, BlendMode.Alpha);
}