IPixelCanvas RandomSquares__DrawVisual2(int count, int square_size, int canvas_size)
{
var rd = new Random();
var pc = new PixelArrayCanvas(canvas_size, canvas_size);
var dv = new DrawingVisual();
var geom = new RectangleGeometry(new System.Windows.Rect(0, 0, square_size, square_size));
geom.Freeze();
using (var cx = dv.RenderOpen())
{
var canvas = new RectangleGeometry(new Rect(0, 0, canvas_size, canvas_size));
canvas.Freeze();
cx.DrawGeometry(Brushes.Transparent, null, canvas);
var lols = new ConcurrentBag<DrawingWithExtras>();
Parallel.For(0, count, i =>
{
var drawing = new GeometryDrawing(Brushes.Red, new Pen(Brushes.Red, 1), geom);
drawing.Freeze();
var trans = new TranslateTransform(rd.Next(0, canvas_size - square_size), rd.Next(0, canvas_size - square_size));
trans.Freeze();
lols.Add(new DrawingWithExtras { drawing = drawing, transform = trans });
});
foreach(var lol in lols)
{
cx.PushTransform(lol.transform);
cx.DrawDrawing(lol.drawing);
cx.Pop();
}
}
pc.DrawVisual(0, 0, dv, BlendMode.Copy);
return pc;
}
IPixelCanvas RandomSquares__DrawVisual(int count, int square_size, int canvas_size)
{
var rd = new Random();
var pc = new PixelArrayCanvas(canvas_size, canvas_size);
var dv = new DrawingVisual();
var geom = new RectangleGeometry(new System.Windows.Rect(0, 0, square_size, square_size));
geom.Freeze();
using (var cx = dv.RenderOpen())
{
var canvas = new RectangleGeometry(new Rect(0, 0, canvas_size, canvas_size));
canvas.Freeze();
cx.DrawGeometry(Brushes.Transparent, null, canvas);
for(int i = 0; i < count; i++)
{
cx.PushTransform(new TranslateTransform(rd.Next(0, canvas_size - square_size), rd.Next(0, canvas_size - square_size)));
cx.DrawGeometry(Brushes.Red, new Pen(Brushes.Red, 1), geom);
cx.Pop();
}
}
pc.DrawVisual(0, 0, dv, BlendMode.Copy);
return pc;
}