static void Main(string[] args)
{
Console.WriteLine($"Runs {RUNS} with {MAX_DEPTH} color layers");
int colorObjectCount = (int)Math.Pow(2, MAX_DEPTH);
// This is the code that a thread haz to run:
// The arrays are being created here to reduce the number of useless object allocations
Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
byte[] resultingColors = new byte[colorObjectCount];
ColorObject[] colorObjects = new ColorObject[colorObjectCount];
GreyscaleColor[] colorLayers = new GreyscaleColor[MAX_DEPTH + 1];
colorLayers[0] = new GreyscaleColor {
Greyscale = 0, Alpha = 255
};
colorLayers[1] = new GreyscaleColor {
Greyscale = 255, Alpha = 255
};
double maxScore = 0;
ColorsResult maxResult = null;
Random rng = new Random(); // This could be a source of derp, since the C# RNG != the Java RNG
for (int i = 0; i < RUNS; i++)
{
ColorsResult result = DoRun(maxScore, resultingColors, colorObjects, colorLayers, rng);
if (result != null)
{
Console.WriteLine($"Best score {result.Score}");
maxScore = result.Score;
maxResult = result;
}
}
stopWatch.Stop();
Console.WriteLine($"Completed in {stopWatch.ElapsedMilliseconds}ms");
Console.ReadLine();
// And then output it or return it from the thread
var jsonSerializerOptions = new JsonSerializerOptions
{
WriteIndented = true
};
jsonSerializerOptions.Converters.Add(new GreyscaleColorConverter());
Console.WriteLine(JsonSerializer.Serialize(new ColorsResultOutput(maxResult), jsonSerializerOptions));
Console.ReadLine();
}
static ColorsResult DoRun(double maxScore, byte[] resultingColors, ColorObject[] colorObjects, GreyscaleColor[] colorLayers, Random rng)
{
// 0th color object is always the black background
// 1st color object is always the white foreground (layer 1)\
// I have to do this every time because of the .Sort() at the end
resultingColors[0] = 0;
resultingColors[1] = 255;
colorObjects[0] = new ColorObject()
{
BitPattern = 0, Depth = 0
};
colorObjects[1] = new ColorObject()
{
BitPattern = ToggleBit(0, 1), Depth = 1
};
int colorsObjectsLength = 2;
// Now randomly choose the next color layers
for (int depthIndex = 2; depthIndex < MAX_DEPTH + 1; depthIndex++)
{
// Choose color layer
int greyscale = rng.Next(255);
int alpha = rng.Next(255);
colorLayers[depthIndex].Greyscale = greyscale;
colorLayers[depthIndex].Alpha = alpha;
// Copied from Processing's sauce code
int s_a = alpha + (alpha >= 0x7F ? 1 : 0);
int d_a = 0x100 - s_a;
// Lerp it with all existing possibilities (colorObjects)
int len = colorsObjectsLength;
for (int j = 0; j < len; j++)
{
// Copied from Processing's sauce code
int lerpedColor = (resultingColors[j] * d_a + greyscale * s_a) >> 8;
// New color object
resultingColors[colorsObjectsLength] = (byte)lerpedColor;
colorObjects[colorsObjectsLength].Depth = (byte)depthIndex;
colorObjects[colorsObjectsLength].BitPattern = ToggleBit(colorObjects[j].BitPattern, depthIndex);
colorsObjectsLength++;
}
}
// And compute the score
// Swap element 1 with the last element
resultingColors[1] = resultingColors[colorsObjectsLength - 1];
resultingColors[colorsObjectsLength - 1] = 255;
// And sort the rest
Array.Sort(resultingColors, colorObjects);
double score = 0;
for (int i = 0; i < colorsObjectsLength - 1; i++)
{
int diff = resultingColors[i + 1] - resultingColors[i];
if (diff > 1)
{
score += Math.Sqrt(diff);
}
}
if (score <= maxScore)
{
return(null);
}
else
{
return(new ColorsResult()
{
Score = score,
ResultingColors = (byte[])resultingColors.Clone(),
ResultingColorObjects = (ColorObject[])colorObjects.Clone(),
ColorLayers = (GreyscaleColor[])colorLayers.Clone()
});
}
}