void Render(int points, int size)
{
var sw = Stopwatch.StartNew();
var r = new Random();
var pen = new Pen(Brushes.DeepPink, 2);
pen.Freeze();
Trace.WriteLine("after freeze: " + sw.GetElapsedAndRestart().TotalMilliseconds);
var d = new DrawingGroup();
using (var cx = d.Open())
{
for (int i = 0; i < points; i++)
{
cx.DrawLine(pen, new Point(r.Next(0, 50), r.Next(0, 50)), new Point(r.Next(0, 50), r.Next(0, 50)));
}
}
d.Freeze();
var dv = new DrawingVisual();
using (var cx = dv.RenderOpen())
{
cx.DrawDrawing(d);
//for (int i = 0; i < points; i++)
//{
// cx.DrawLine(pen, new Point(r.Next(0, 50), r.Next(0, 50)), new Point(r.Next(0, 50), r.Next(0, 50)));
//}
}
Trace.WriteLine("after draw: " + sw.GetElapsedAndRestart().TotalMilliseconds);
var trb = new RenderTargetBitmap(size, size, 96, 96, PixelFormats.Pbgra32);
trb.Render(dv);
Trace.WriteLine("after render: " + sw.GetElapsedAndRestart().TotalMilliseconds);
var x = trb.GetPixels();
Trace.WriteLine("after get pixels: " + sw.GetElapsedAndRestart().TotalMilliseconds);
//trb.Save($@"C:\temp\shit\{size}.png");
}