public Filter()
{
saturationlow = saturationmid = saturationhigh = 1.0;
contrastlow = contrastmid = contrasthigh = 0.0;
offsetrange = 1.0;
offsetlow = offsetmid = offsethigh = new RGB(0.0, 0.0, 0.0);
gainrange = 2.0;
temperaturelow = temperaturemid = temperaturehigh = 0.0;
magentalow = magentamid = magentahigh = 0.0;
overalllow = overallmid = overallhigh = 0.0;
gainlow = gainmid = gainhigh = new RGB(0.0, 0.0, 0.0);
ingammalow = ingammamid = ingammahigh = new RGB(1.0, 1.0, 1.0);
outgammalow = outgammamid = outgammahigh = new RGB(1.0, 1.0, 1.0);
tgainlow = tgainmid = tgainhigh = new RGB(1.0, 1.0, 1.0);
gammalow = gammamid = gammahigh = new RGB(1.0, 1.0, 1.0);
}
private RGB PixelOperation(Color col, double saturation, double contrast, RGB offset, RGB gain, RGB gamma)
{
double R = col.R;
double G = col.G;
double B = col.B;
if (saturation < 1.0)
{
Color aux = Program.HSL2RGB(col.GetHue() / 360.0, col.GetSaturation() * saturation, col.GetBrightness());
R = aux.R;
G = aux.G;
B = aux.B;
}
if (contrast != 0.0)
{
double rc;
if (contrast < -100)
rc = 0.0;
else if (contrast > 100)
rc = 2.0;
else
rc = (100.0 + contrast) / 100.0;
rc *= rc;
double red = R / 255.0;
red -= 0.5;
red *= rc;
red += 0.5;
R = red * 255.0;
double gc;
if (contrast < -100)
gc = 0.0;
else if (contrast > 100)
gc = 2.0;
else
gc = (100.0 + contrast) / 100.0;
gc *= gc;
double green = G / 255.0;
green -= 0.5;
green *= gc;
green += 0.5;
G = green * 255.0;
double bc;
if (contrast < -100)
bc = 0.0;
else if (contrast > 100)
bc = 2.0;
else
bc = (100.0 + contrast) / 100.0;
bc *= bc;
double blue = B / 255.0;
blue -= 0.5;
blue *= bc;
blue += 0.5;
B = blue * 255.0;
}
if (gamma.Red == 1.0)
R = (R + offset.Red) * gain.Red;
else
R = Math.Pow(((R + offset.Red) * gain.Red) / 255.0, gamma.Red) * 255.0;
if (gamma.Green == 1.0)
G = (G + offset.Green) * gain.Green;
else
G = Math.Pow(((G + offset.Green) * gain.Green) / 255.0, gamma.Green) * 255.0;
if (gamma.Blue == 1.0)
B = (B + offset.Blue) * gain.Blue;
else
B = Math.Pow(((B + offset.Blue) * gain.Blue) / 255.0, gamma.Blue) * 255.0;
return new RGB(R, G, B);
}
public void CalcGamma()
{
gammalow = new RGB(ingammalow.Red / outgammalow.Red, ingammalow.Green / outgammalow.Green, ingammalow.Blue / outgammalow.Blue);
gammamid = new RGB(ingammamid.Red / outgammamid.Red, ingammamid.Green / outgammamid.Green, ingammamid.Blue / outgammamid.Blue);
gammahigh = new RGB(ingammahigh.Red / outgammahigh.Red, ingammahigh.Green / outgammahigh.Green, ingammahigh.Blue / outgammahigh.Blue);
}
private RGB PixelOperation(Color col, double saturation, double contrast, RGB offset, RGB gain, RGB gamma)
{
double R = col.R;
double G = col.G;
double B = col.B;
if (saturation < 1.0)
{
Color aux = Program.HSL2RGB(col.GetHue() / 360.0, col.GetSaturation() * saturation, col.GetBrightness());
R = aux.R;
G = aux.G;
B = aux.B;
}
if (contrast != 0.0)
{
double rc;
if (contrast < -100)
{
rc = 0.0;
}
else if (contrast > 100)
{
rc = 2.0;
}
else
{
rc = (100.0 + contrast) / 100.0;
}
rc *= rc;
double red = R / 255.0;
red -= 0.5;
red *= rc;
red += 0.5;
R = red * 255.0;
double gc;
if (contrast < -100)
{
gc = 0.0;
}
else if (contrast > 100)
{
gc = 2.0;
}
else
{
gc = (100.0 + contrast) / 100.0;
}
gc *= gc;
double green = G / 255.0;
green -= 0.5;
green *= gc;
green += 0.5;
G = green * 255.0;
double bc;
if (contrast < -100)
{
bc = 0.0;
}
else if (contrast > 100)
{
bc = 2.0;
}
else
{
bc = (100.0 + contrast) / 100.0;
}
bc *= bc;
double blue = B / 255.0;
blue -= 0.5;
blue *= bc;
blue += 0.5;
B = blue * 255.0;
}
if (gamma.Red == 1.0)
{
R = (R + offset.Red) * gain.Red;
}
else
{
R = Math.Pow(((R + offset.Red) * gain.Red) / 255.0, gamma.Red) * 255.0;
}
if (gamma.Green == 1.0)
{
G = (G + offset.Green) * gain.Green;
}
else
{
G = Math.Pow(((G + offset.Green) * gain.Green) / 255.0, gamma.Green) * 255.0;
}
if (gamma.Blue == 1.0)
{
B = (B + offset.Blue) * gain.Blue;
}
else
{
B = Math.Pow(((B + offset.Blue) * gain.Blue) / 255.0, gamma.Blue) * 255.0;
}
return(new RGB(R, G, B));
}
public void CalcGamma()
{
gammalow = new RGB(ingammalow.Red / outgammalow.Red, ingammalow.Green / outgammalow.Green, ingammalow.Blue / outgammalow.Blue);
gammamid = new RGB(ingammamid.Red / outgammamid.Red, ingammamid.Green / outgammamid.Green, ingammamid.Blue / outgammamid.Blue);
gammahigh = new RGB(ingammahigh.Red / outgammahigh.Red, ingammahigh.Green / outgammahigh.Green, ingammahigh.Blue / outgammahigh.Blue);
}
public void Do(Bitmap bitmap)
{
try
{
BitmapData data = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
unsafe
{
int size = bitmap.Width * bitmap.Height;
int *pixels = (int *)data.Scan0;
for (int i = 0; i < size; i++)
{
//System.Windows.Forms.Application.DoEvents();
Color col = Color.FromArgb(pixels[i]);
double R = col.R;
double G = col.G;
double B = col.B;
double L = 0.299 * R + 0.587 * G + 0.114 * B;
double fact = L / 255.0;
if (fact < 0.5)
{
RGB Low = PixelOperation(col, saturationlow, contrastlow, offsetlow, tgainlow, gammalow);
RGB Mid = PixelOperation(col, saturationmid, contrastmid, offsetmid, tgainmid, gammamid);
R = LinearInterpolation(Low.Red, Mid.Red, fact * 2.0);
G = LinearInterpolation(Low.Green, Mid.Green, fact * 2.0);
B = LinearInterpolation(Low.Blue, Mid.Blue, fact * 2.0);
}
else
{
RGB Mid = PixelOperation(col, saturationmid, contrastmid, offsetmid, tgainmid, gammamid);
RGB High = PixelOperation(col, saturationhigh, contrasthigh, offsethigh, tgainhigh, gammahigh);
R = LinearInterpolation(Mid.Red, High.Red, (fact - 0.5) * 2.0);
G = LinearInterpolation(Mid.Green, High.Green, (fact - 0.5) * 2.0);
B = LinearInterpolation(Mid.Blue, High.Blue, (fact - 0.5) * 2.0);
}
if (R > 255.0)
{
R = 255.0;
}
else if (R < 0.0)
{
R = 0.0;
}
if (G > 255.0)
{
G = 255.0;
}
else if (G < 0.0)
{
G = 0.0;
}
if (B > 255.0)
{
B = 255.0;
}
else if (B < 0.0)
{
B = 0.0;
}
pixels[i] = Color.FromArgb((int)R, (int)G, (int)B).ToArgb();
}
}
try
{
bitmap.UnlockBits(data);
}catch { }
this.Image = new Bitmap(bitmap, new Size(48, 32));
}
catch (Exception)
{
}
}
