/// <summary>
/// Draws the content of the control filling in all color values with the provided Luminance value.
/// </summary>
protected unsafe void Draw_Style_Luminance()
{
BitmapData lockedBitmap = m_Output.LockBits(new Rectangle(0, 0, Width, Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
float3 Lab = AdobeColors.RGB2Lab_D65(m_RGB);
float3 RGB;
int W = Width - 4;
int H = Height - 4;
for (int Y = 0; Y < H; Y++)
{
byte *scanlinePtr = (byte *)lockedBitmap.Scan0.ToPointer() + (2 + Y) * lockedBitmap.Stride + (2 * 4); // Add a margin of 2
Lab.z = -(256.0f * Y / H - 128.0f);
for (int X = 0; X < W; X++)
{
Lab.y = 256.0f * X / W - 128.0f;
RGB = AdobeColors.Lab2RGB_D65(Lab);
*scanlinePtr++ = (byte)Math.Max(0, Math.Min(255, 255 * RGB.z));
*scanlinePtr++ = (byte)Math.Max(0, Math.Min(255, 255 * RGB.y));
*scanlinePtr++ = (byte)Math.Max(0, Math.Min(255, 255 * RGB.x));
*scanlinePtr++ = 0xFF;
}
}
m_Output.UnlockBits(lockedBitmap);
}
private void gradientFloatTrackbarControlb_ValueChanged(FloatTrackbarControl _Sender, float _fFormerValue)
{
float3 Lab = AdobeColors.RGB2Lab_D65((float3)m_RGB);
Lab.z = _Sender.Value;
RGB = AdobeColors.HSB2RGB(Lab);
}
