Color GetClosestColor(Color c)
{
stopwatch_gcc.Start();
Color result;
switch (mode)
{
case 1:
result = palette[ColorsHelper.closestColor1(palette, c)];
break;
case 2:
result = palette[ColorsHelper.closestColor2(palette, c)];
break;
case 3:
result = palette[ColorsHelper.closestColor3(palette, c)];
break;
default: throw new InvalidOperationException();
}
stopwatch_gcc.Stop();
return(result);
}
void ProcessImage(Bitmap m)
{
try
{
this.InvokeX(() => { DisableMainPanel(); });
void ProcessUsingLockbitsAndParallel(Bitmap processedBitmap)
{//this was also copied with modifications
BitmapData bitmapData = processedBitmap.LockBits(new Rectangle(0, 0, processedBitmap.Width, processedBitmap.Height), ImageLockMode.ReadWrite, processedBitmap.PixelFormat);
int bytesPerPixel = Image.GetPixelFormatSize(processedBitmap.PixelFormat) / 8;
int byteCount = bitmapData.Stride * processedBitmap.Height;
int heightInPixels = bitmapData.Height;
int widthInBytes = bitmapData.Width * bytesPerPixel;
byte[] pixels = new byte[byteCount];
IntPtr ptrFirstPixel = bitmapData.Scan0;
Marshal.Copy(ptrFirstPixel, pixels, 0, pixels.Length);
var thecache = cache[mode - 1];
Parallel.For(0, heightInPixels, new ParallelOptions()
{
MaxDegreeOfParallelism = maxParallelism
}, y =>
{
int currentLine = y * bitmapData.Stride;
for (int x = 0; x < widthInBytes; x = x + bytesPerPixel)
{
byte oldBlue = pixels[currentLine + x];
byte oldGreen = pixels[currentLine + x + 1];
byte oldRed = pixels[currentLine + x + 2];
byte oldAlpha = 255;
if (bytesPerPixel > 3)
{
oldAlpha = pixels[currentLine + x + 3];
}
// calculate new pixel value
if (oldAlpha < 127)
{
oldAlpha = 0;
}
else
{
oldAlpha = 255;
}
var oldc = Color.FromArgb(oldAlpha, oldRed, oldGreen, oldBlue);
var oldargb = oldc.ToArgb();
Color c;
if (oldAlpha == 0)
{
//c = Color.FromArgb(WorldData.FromBlockColorToArgb(WorldData.BlockColors[(ushort)BlockId.Black]));
//c = Color.Transparent;
c = Color.FromArgb(0, 0, 0, 0);
}
else
{
Trace.Assert(oldAlpha == 255);
if (thecache.ContainsKey(oldargb))
{
c = Color.FromArgb(RoomData.FromBlockColorToARGB(RoomData.BlockColors[thecache[oldargb]]));
}
else
{
c = GetClosestColor(oldc);
if (!thecache.TryAdd(oldargb, palettebid[c.ToArgb()]))
{
Console.WriteLine("someone was faster than me! " + oldargb.ToString("X6"));
}
cacheModified = true;
}
}
image[x / bytesPerPixel, y] = c;
//Console.WriteLine($"{x / bytesPerPixel},{y}");
oldRed = c.R;
oldGreen = c.G;
oldBlue = c.B;
pixels[currentLine + x] = oldBlue;
pixels[currentLine + x + 1] = oldGreen;
pixels[currentLine + x + 2] = oldRed;
if (bytesPerPixel > 3)
{
pixels[currentLine + x + 3] = oldAlpha;
}
}
});
// copy modified bytes back
Marshal.Copy(pixels, 0, ptrFirstPixel, pixels.Length);
processedBitmap.UnlockBits(bitmapData);
}
imgw = m.Width; imgh = m.Height;
image = new Color[imgw, imgh];
Stopwatch stopwatch = Stopwatch.StartNew();
stopwatch_gcc.Reset();
ColorsHelper.ResetTimers();
ProcessUsingLockbitsAndParallel(m);
stopwatch_gcc.Stop();
stopwatch.Stop();
Console.WriteLine($"in GetClosestColor: {stopwatch_gcc.Elapsed}");
Console.WriteLine($"total: {stopwatch.Elapsed}");
ColorsHelper.PrintTimers();
this.InvokeX(() =>
{
pictureBox1.Image?.Dispose();
pictureBox1.Image = m;
originalSize = new Size(imgw, imgh);
trackBar3_Scroll(this, null);
pictureBox1.Location = new Point(0, 0);
EnableMainPanel();
this.AllowDrop = true;
button2.Enabled = true;
trackBar3.Enabled = true;
button3.Enabled = true;
});
}
catch
{
Debugger.Break();
throw;
}
}