/// <summary>
/// Filter Implementation
/// </summary>
protected override IImageAdapter ProcessFilter(IImageAdapter source)
{
if (_redLuminance + _greenLuminance + _blueLuminance != 1.0)
{
throw new RenderingVerificationException("The sum of RedLuminance, GreenLuminance and BlueLuminance must be 1.0 (currently sum = " + (_redLuminance + _greenLuminance + _blueLuminance).ToString() + ")");
}
ImageAdapter retVal = new ImageAdapter(source.Width, source.Height);
// Convert HSL to RGB
HSLColor hsl = new HSLColor();
hsl.H = ((Hue + 360.0) % 360) / 360.0; // Normalize -180/180 to 0/1
hsl.S = 1.0;
hsl.L = 0.5;
ColorSpaceConversion colorConvert = new ColorSpaceConversion();
colorConvert.HSL = hsl;
IColor tintColor = colorConvert.ColorDouble;
// multiply every color channel by amount
tintColor.ExtendedRed *= Amount;
tintColor.ExtendedGreen *= Amount;
tintColor.ExtendedBlue *= Amount;
double amount = (Amount < 0) ? 1.0 : (1.0 - Amount);
// Tint all pixels
IColor newColor = null;
double luminance = 0.0;
int height = source.Height;
int width = source.Width;
double temp = 0.0;
double maxChannel = 0.0;
int x = 0;
int y = 0;
for (y = 0; y < height; y++)
{
for (x = 0; x < width; x++)
{
newColor = (IColor)source[x, y].Clone();
if (newColor.IsEmpty)
{
retVal[x, y] = newColor;
continue;
}
luminance = newColor.ExtendedRed * _redLuminance + newColor.ExtendedGreen * _greenLuminance + newColor.ExtendedBlue * _blueLuminance;
maxChannel = Math.Max(Math.Max(source[x, y].ExtendedRed, source[x, y].ExtendedGreen), source[x, y].ExtendedBlue);
temp = source[x, y].ExtendedRed * amount + tintColor.ExtendedRed * maxChannel;
newColor.ExtendedRed = temp;
temp = source[x, y].ExtendedGreen * amount + tintColor.ExtendedGreen * maxChannel;
newColor.ExtendedGreen = temp;
temp = source[x, y].ExtendedBlue * amount + tintColor.ExtendedBlue * maxChannel;
newColor.ExtendedBlue = temp;
// restore the original luminance
double deltaLum = luminance - (newColor.ExtendedRed * _redLuminance + newColor.ExtendedGreen * _greenLuminance + newColor.ExtendedBlue * _blueLuminance);
newColor.ExtendedRed = newColor.ExtendedRed + deltaLum;
newColor.ExtendedGreen = newColor.ExtendedGreen + deltaLum;
newColor.ExtendedBlue = newColor.ExtendedBlue + deltaLum;
retVal[x, y] = newColor;
}
}
return(retVal);
}
/// <summary>
/// Filter Implementation
/// </summary>
protected override IImageAdapter ProcessFilter(IImageAdapter source)
{
ImageAdapter retVal = new ImageAdapter(source.Width, source.Height);
// Convert HSL to RGB
HSLColor hsl = new HSLColor();
hsl.H = ((Hue + 360.0) % 360) / 360.0; // Normalize -180/180 to 0/1
hsl.S = 1.0;
hsl.L = 0.5;
ColorSpaceConversion colorConvert = new ColorSpaceConversion();
colorConvert.HSL = hsl;
IColor tintColor = colorConvert.ColorDouble;
// multiply every color channel by amount
double amount = Amount;
tintColor.ExtendedRed *= Amount;
tintColor.ExtendedGreen *= Amount;
tintColor.ExtendedBlue *= Amount;
if (Amount < 0.0)
{
amount *= -1;
tintColor.ExtendedRed = 1.0 + tintColor.ExtendedRed;
tintColor.ExtendedGreen = 1.0 + tintColor.ExtendedGreen;
tintColor.ExtendedBlue = 1.0 + tintColor.ExtendedBlue;
}
// Tint all pixels
IColor newColor = null;
IColor tempColor = null;
double luminance = 0.0;
int height = source.Height;
int width = source.Width;
double temp = 0.0;
double maxChannel = 0.0;
int x = 0;
int y = 0;
for (y = 0; y < height; y++)
{
for (x = 0; x < width; x++)
{
tempColor = new ColorDouble((IColor)source[x, y]);
if (tempColor.IsEmpty)
{
retVal[x, y] = tempColor;
continue;
}
luminance = tempColor.ExtendedRed * MIL_LUMINANCE_RED + tempColor.ExtendedGreen * MIL_LUMINANCE_GREEN + tempColor.ExtendedBlue * MIL_LUMINANCE_BLUE;
maxChannel = Math.Max(Math.Max(source[x, y].ExtendedRed, source[x, y].ExtendedGreen), source[x, y].ExtendedBlue);
temp = source[x, y].ExtendedRed * (1.0 - amount) + tintColor.ExtendedRed * maxChannel;
tempColor.ExtendedRed = temp;
temp = source[x, y].ExtendedGreen * (1.0 - amount) + tintColor.ExtendedGreen * maxChannel;
tempColor.ExtendedGreen = temp;
temp = source[x, y].ExtendedBlue * (1.0 - amount) + tintColor.ExtendedBlue * maxChannel;
tempColor.ExtendedBlue = temp;
// restore the original luminance
double deltaLum = luminance - (tempColor.ExtendedRed * MIL_LUMINANCE_RED + tempColor.ExtendedGreen * MIL_LUMINANCE_GREEN + tempColor.ExtendedBlue * MIL_LUMINANCE_BLUE);
newColor = (IColor)source[x, y].Clone();
newColor.ExtendedRed = tempColor.ExtendedRed + deltaLum;
newColor.ExtendedGreen = tempColor.ExtendedGreen + deltaLum;
newColor.ExtendedBlue = tempColor.ExtendedBlue + deltaLum;
retVal[x, y] = newColor;
}
}
return(retVal);
}
