using System;
 
public class Test
{
    public static void DrawDragonFractal(Pixels pixels, int iterationsCount, int seed)
    {
        var random = new Random(seed);
        double x = 1.0;
        double y = 0.0;
 
        for (int i = 0; i < iterationsCount; i++)
        {
            var xNew = (x * Math.Cos(45) - y * Math.Sin(45)) / Math.Sqrt(2);
            var yNew = (x * Math.Sin(45) + y * Math.Cos(45)) / Math.Sqrt(2);
            x = xNew;
            y = yNew;
 
            pixels.SetPixel(x, y);
        }
    }
}

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