private void ConverToGray(ILockBitmap bitmap, int i, int j, IMaybe <object> value)
{
Color colorPixel = bitmap.GetPixel(i, j);
int grayScale = (int)((colorPixel.R * 0.3) + (colorPixel.G * 0.59) + (colorPixel.B * 0.11));
bitmap.SetPixel(i, j, Color.FromArgb(grayScale, grayScale, grayScale));
}
private void AdjustContrast(ILockBitmap bitmap, int i, int j, IMaybe <double> contrast)
{
//if (contrast < -100) contrast = -100;
//if (contrast > 100) contrast = 100;
//contrast = (100.0 + contrast) / 100.0;
//contrast *= contrast;
Color c;
c = bitmap.GetPixel(i, j);
double pR = c.R / 255.0;
pR -= 0.5;
pR *= contrast.Value;
pR += 0.5;
pR *= 255;
if (pR < 0)
{
pR = 0;
}
if (pR > 255)
{
pR = 255;
}
double pG = c.G / 255.0;
pG -= 0.5;
pG *= contrast.Value;
pG += 0.5;
pG *= 255;
if (pG < 0)
{
pG = 0;
}
if (pG > 255)
{
pG = 255;
}
double pB = c.B / 255.0;
pB -= 0.5;
pB *= contrast.Value;
pB += 0.5;
pB *= 255;
if (pB < 0)
{
pB = 0;
}
if (pB > 255)
{
pB = 255;
}
bitmap.SetPixel(i, j, Color.FromArgb((byte)pR, (byte)pG, (byte)pB));
}
private void AdjustBrightness(ILockBitmap bitmap, int i, int j, IMaybe <int> brightness)
{
Color c;
c = bitmap.GetPixel(i, j);
int cR = c.R + brightness.Value;
int cG = c.G + brightness.Value;
int cB = c.B + brightness.Value;
if (cR < 0)
{
cR = 1;
}
if (cR > 255)
{
cR = 255;
}
if (cG < 0)
{
cG = 1;
}
if (cG > 255)
{
cG = 255;
}
if (cB < 0)
{
cB = 1;
}
if (cB > 255)
{
cB = 255;
}
bitmap.SetPixel(i, j,
Color.FromArgb((byte)cR, (byte)cG, (byte)cB));
}
public void ConvertToNegative(ILockBitmap bitmap, int i, int j, IMaybe <object> value)
{
Color colorPixel = bitmap.GetPixel(i, j);
bitmap.SetPixel(i, j, Color.FromArgb(255 - colorPixel.R, 255 - colorPixel.G, 255 - colorPixel.G));
}