public double GetDifference(AvgColor color1, AvgColor color2)
{
var redMass = (color1.RAvg + color2.RAvg)/2;
var deltaRed = color1.RAvg - color2.RAvg;
var deltaGreen = color1.GAvg - color2.GAvg;
var deltaBlue = color1.BAvg - color2.BAvg;
return Math.Sqrt(Math.Pow(deltaRed, 2) + Math.Pow(deltaGreen, 2) + Math.Pow(deltaBlue, 2));
/*
return Math.Sqrt((2 + redMass / 256) * Math.Pow(deltaRed, 2) + 4 * Math.Pow(deltaGreen, 2) +
(2 + (255 - redMass) / 256) * Math.Pow(deltaBlue, 2));
*/
}
public double GetDifferenceUsingCie1976Comparison(AvgColor color1, AvgColor color2)
{
var colorRgb1 = new Rgb() {R = color1.RAvg, G = color1.GAvg, B = color1.BAvg};
var colorRgb2 = new Rgb() {R = color2.RAvg, G = color2.GAvg, B = color2.BAvg};
return _comparer.Compare(colorRgb1, colorRgb2);
}
public TileInfo FindTitle(AvgColor avgColor)
{
var threshold = 1;
TileInfo result = null;
var hitMatch = false;
while (result == null)
{
hitMatch = false;
foreach (var title in TileContainer.TileBase)
{
if (GetDifferenceUsingCie1976Comparison(title.Value.AvgColor, avgColor) <= threshold)
{
// if we use title, then go next
if (_usedTiles.Contains(title.Key))
{
hitMatch = true;
continue;
}
result = title.Value;
_usedTiles.Add(title.Key);
break;
}
}
var oldThreshold = threshold;
if (result == null)
{
if (hitMatch)
{
foreach (var title in TileContainer.TileBase)
{
if (!_usedTiles.Contains(title.Key) && GetDifferenceUsingCie1976Comparison(title.Value.AvgColor, avgColor) <= threshold + 5)
{
result = title.Value;
_usedTiles.Add(title.Key);
break;
}
}
}
if (result == null)
{
threshold = oldThreshold;
var _usedTitlesCopy = _usedTiles.ToList();
foreach (var usedTile in _usedTitlesCopy)
{
var title = TileContainer.TileBase[usedTile];
if (GetDifferenceUsingCie1976Comparison(title.AvgColor, avgColor) <= threshold)
{
result = title;
break;
}
}
}
}
threshold += 2;
}
return result;
}