private unsafe void DrawColorRange()
{
HSV hSV = new HSV(0.0, 1.0, 1.0);
BitmapData bitmapData = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadWrite, bmp.PixelFormat);
int num = Image.GetPixelFormatSize(bmp.PixelFormat) / 8;
int height = bitmapData.Height;
int num2 = bitmapData.Width * num;
byte * ptr = (byte *)(void *)bitmapData.Scan0;
for (int i = 0; i < height; i++)
{
byte *ptr2 = ptr + i * bitmapData.Stride;
for (int j = 0; j < num2; j += num)
{
hSV.SetHue((double)(j / num));
Color color = hSV.ToRGB();
ptr2[j] = color.B;
ptr2[j + 1] = color.G;
ptr2[j + 2] = color.R;
}
}
bmp.UnlockBits(bitmapData);
}
/// <summary>
/// Draws all degrees of hue to the bitmap.
/// </summary>
private void DrawColorRange()
{
HSV colorHSV = new HSV(0, 1, 1);
Color colorRGB;
unsafe
{
BitmapData bitmapData = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadWrite, bmp.PixelFormat);
int bytesPerPixel = System.Drawing.Bitmap.GetPixelFormatSize(bmp.PixelFormat) / 8;
int heightInPixels = bitmapData.Height;
int widthInBytes = bitmapData.Width * bytesPerPixel;
byte *PtrFirstPixel = (byte *)bitmapData.Scan0;
for (int y = 0; y < heightInPixels; y++)
{
byte *currentLine = PtrFirstPixel + (y * bitmapData.Stride);
for (int x = 0; x < widthInBytes; x = x + bytesPerPixel)
{
//int oldBlue = currentLine[x];
//int oldGreen = currentLine[x + 1];
//int oldRed = currentLine[x + 2];
colorHSV.SetHue(x / bytesPerPixel);
//colorHSV.SetValue(y/360.0);
//colorHSV.SetSaturation(y / 360.0);
colorRGB = colorHSV.ToRGB();
currentLine[x] = (byte)colorRGB.B;
currentLine[x + 1] = (byte)colorRGB.G;
currentLine[x + 2] = (byte)colorRGB.R;
}
}
bmp.UnlockBits(bitmapData);
}
}