public Constant(ColorBgra setColor)
{
this.setColor = setColor;
}
public override ColorBgra Apply(ColorBgra color)
{
return(setColor);
}
public Level(ColorBgra in_lo, ColorBgra in_hi, float[] gamma, ColorBgra out_lo, ColorBgra out_hi)
{
colorInLow = in_lo;
colorInHigh = in_hi;
colorOutLow = out_lo;
colorOutHigh = out_hi;
if (gamma.Length != 3)
{
throw new ArgumentException("gamma", "gamma must be a float[3]");
}
this.gamma = gamma;
UpdateLookupTable();
}
public override ColorBgra Apply(ColorBgra color)
{
byte i = color.GetIntensityByte();
return(ColorBgra.FromBgra(i, i, i, color.A));
}
public override ColorBgra Apply(ColorBgra color)
{
return(ColorBgra.FromBgra(CurveB[color.B], CurveG[color.G], CurveR[color.R], color.A));
}
public override ColorBgra Apply(ColorBgra color)
{
return(ColorBgra.FromBgra((byte)(255 - color.B), (byte)(255 - color.G), (byte)(255 - color.R), (byte)(255 - color.A)));
}
public override ColorBgra Apply(ColorBgra color)
{
byte average = (byte)(((int)color.R + (int)color.G + (int)color.B) / 3);
return(ColorBgra.FromBgra(average, average, average, color.A));
}
public override ColorBgra Apply(ColorBgra color)
{
return(ColorBgra.FromUInt32((color.Bgra & 0x00ffffff) + addValue));
}
public override ColorBgra Apply(ColorBgra color)
{
return(ColorBgra.FromUInt32(color.Bgra | 0xff000000));
}
public override ColorBgra Apply(ColorBgra color)
{
color[channel] = setValue;
return(color);
}
public BlendConstant(ColorBgra blendColor)
{
this.blendColor = blendColor;
}
public void SetFromLeveledHistogram(HistogramRgb inputHistogram, UnaryPixelOps.Level upo)
{
if (inputHistogram == null || upo == null)
{
return;
}
Clear();
float[] before = new float[3];
float[] slopes = new float[3];
for (int c = 0; c < 3; c++)
{
long[] channelHistogramOutput = histogram[c];
long[] channelHistogramInput = inputHistogram.histogram[c];
for (int v = 0; v <= 255; v++)
{
ColorBgra after = ColorBgra.FromBgr((byte)v, (byte)v, (byte)v);
upo.UnApply(after, before, slopes);
if (after[c] > upo.ColorOutHigh[c] ||
after[c] < upo.ColorOutLow[c] ||
(int)Math.Floor(before[c]) < 0 ||
(int)Math.Ceiling(before[c]) > 255 ||
float.IsNaN(before[c]))
{
channelHistogramOutput[v] = 0;
}
else if (before[c] <= upo.ColorInLow[c])
{
channelHistogramOutput[v] = 0;
for (int i = 0; i <= upo.ColorInLow[c]; i++)
{
channelHistogramOutput[v] += channelHistogramInput[i];
}
}
else if (before[c] >= upo.ColorInHigh[c])
{
channelHistogramOutput[v] = 0;
for (int i = upo.ColorInHigh[c]; i < 256; i++)
{
channelHistogramOutput[v] += channelHistogramInput[i];
}
}
else
{
channelHistogramOutput[v] = (int)(slopes[c] * PixelUtils.Lerp(
channelHistogramInput[(int)Math.Floor(before[c])],
channelHistogramInput[(int)Math.Ceiling(before[c])],
before[c] - Math.Floor(before[c])));
}
}
}
OnHistogramUpdated();
}
public override ColorBgra GetPercentileColor(float fraction)
{
int[] perc = GetPercentile(fraction);
return(ColorBgra.FromBgr((byte)(perc[0]), (byte)(perc[1]), (byte)(perc[2])));
}
public override ColorBgra GetMeanColor()
{
float[] mean = GetMean();
return(ColorBgra.FromBgr((byte)(mean[0] + 0.5f), (byte)(mean[1] + 0.5f), (byte)(mean[2] + 0.5f)));
}
