/**
* Run the Color Contrast calculation on the image.
*/
public ColorContrastResult RunColorContrastCalculation()
{
var contrastResult = new ColorContrastResult();
ColorContrastResult oldContrastResult = null;
var colorContrastTransitions = new List <ColorContrastTransition>();
Pixel lastPixel = new Pixel(Color.WHITE, 0, 0);
foreach (var pixel in GetBinaryRowSearchIterator())
{
if (!lastPixel.Row.Equals(pixel.Row))
{
if (contrastResult.ConfidenceValue().Equals(Confidence.High))
{
return(contrastResult);
}
if (oldContrastResult == null)
{
oldContrastResult = contrastResult;
}
if (contrastResult.ConfidenceValue() > oldContrastResult.ConfidenceValue())
{
oldContrastResult = contrastResult;
}
}
colorContrastTransitions.Add(new ColorContrastTransition(pixel.Color));
foreach (var transition in colorContrastTransitions)
{
transition.AddColor(pixel.Color);
if (transition.IsPotentialForegroundBackgroundPair())
{
contrastResult.OnColorPair(transition.ToColorPair());
}
}
colorContrastTransitions.RemoveAll(transition => transition.IsStartingAndEndingColorSame());
lastPixel = pixel;
}
return(oldContrastResult);
}
/**
* Run the Color Contrast calculation on the image.
*/
public ColorContrastResult RunColorContrastCalculation()
{
ColorContrastResult result = null;
ColorContrastRunner runner = new ColorContrastRunner();
Color previousColor = null;
foreach (var pixel in GetBinaryRowSearchIterator())
{
if (IsNewRow(pixel))
{
runner.OnRowBegin();
}
runner.OnPixel(pixel.Color, previousColor);
previousColor = pixel.Color;
if (IsEndOfRow(pixel))
{
var newResult = runner.OnRowEnd();
if (result == null)
{
result = newResult;
}
if (newResult.ConfidenceValue() == ColorContrastResult.Confidence.High)
{
result = newResult;
break;
}
else if (newResult.ConfidenceValue() == ColorContrastResult.Confidence.Mid &&
result.ConfidenceValue() == ColorContrastResult.Confidence.Low)
{
result = newResult;
}
}
}
return(result);
}
