protected override unsafe void OnUpdatePlaneImage(Bitmap bmp)
{
if (bmp.PixelFormat != PixelFormat.Format32bppArgb)
{
return;
}
BitmapData bd = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height),
ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
ColorBgra *scan0 = (ColorBgra *)bd.Scan0;
//draw plane image
LAB curr = new LAB(_color.L, -128.0, 127.0);
double
delta_a = 255.0 / (double)bd.Width,
delta_b = -255.0 / (double)bd.Height;
for (int y = 0; y < bd.Height; y++, curr.a = -128.0, curr.b += delta_b)
{
for (int x = 0; x < bd.Width; x++, scan0++, curr.a += delta_a)
{
scan0[0] = ColorBgra.FromArgb(curr.ToXYZ().ToRGB());
}
}
//end
bmp.UnlockBits(bd);
}
protected override unsafe void OnUpdateFaderImage(Bitmap bmp)
{
if (bmp.PixelFormat != PixelFormat.Format32bppArgb)
{
return;
}
BitmapData bd = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height),
ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
ColorBgra *scan0 = (ColorBgra *)bd.Scan0;
//draw fader image
LAB curr = new LAB(0.0, _color.a, _color.b);
double delta_L = 100.0 / (double)bd.Width;
for (int x = 0; x < bd.Width; x++, scan0++, curr.L += delta_L)
{
scan0[0] = ColorBgra.FromArgb(curr.ToXYZ().ToRGB());
}
//end
bmp.UnlockBits(bd);
}