private ColorCutQuantizer(ColorHistogram colorHistogram, int maxColors)
{
if (colorHistogram == null)
{
throw new ArgumentNullException("colorHistogram can not be null");
}
if (maxColors < 1)
{
throw new ArgumentException("maxColors must be 1 or greater");
}
int rawColorCount = colorHistogram.getNumberOfColors();
Color[] rawColors = colorHistogram.getColors();
int[] rawColorCounts = colorHistogram.getColorCounts();
// First, lets pack the populations into a SparseIntArray so that they can be easily
// retrieved without knowing a color's index
mColorPopulations = new List <KeyValuePair <Color, Int32> >(rawColorCount);
for (int i = 0; i < rawColors.Length; i++)
{
mColorPopulations.Add(new KeyValuePair <Color, Int32>(rawColors[i], rawColorCounts[i]));
}
// Now go through all of the colors and keep those which we do not want to ignore
mColors = new Color[rawColorCount];
int validColorCount = 0;
foreach (Color color in rawColors)
{
if (!shouldIgnoreColor(color))
{
mColors[validColorCount++] = color;
}
}
if (validColorCount <= maxColors)
{
// The image has fewer colors than the maximum requested, so just return the colors
mQuantizedColors = new List <Swatch>();
foreach (Color color in mColors)
{
try
{
mQuantizedColors.Add(new Swatch(color, mColorPopulations.First(kvp => kvp.Key == color).Value));
}
catch (Exception)
{
}
}
}
else
{
// We need use quantization to reduce the number of colors
mQuantizedColors = quantizePixels(validColorCount - 1, maxColors);
}
}
private ColorCutQuantizer(ColorHistogram colorHistogram, int maxColors)
{
if (colorHistogram == null)
{
throw new ArgumentNullException("colorHistogram can not be null");
}
if (maxColors < 1)
{
throw new ArgumentException("maxColors must be 1 or greater");
}
int rawColorCount = colorHistogram.getNumberOfColors();
Color[] rawColors = colorHistogram.getColors();
int[] rawColorCounts = colorHistogram.getColorCounts();
// First, lets pack the populations into a SparseIntArray so that they can be easily
// retrieved without knowing a color's index
mColorPopulations = new List<KeyValuePair<Color, Int32>>(rawColorCount);
for (int i = 0; i < rawColors.Length; i++)
{
mColorPopulations.Add(new KeyValuePair<Color, Int32>(rawColors[i], rawColorCounts[i]));
}
// Now go through all of the colors and keep those which we do not want to ignore
mColors = new Color[rawColorCount];
int validColorCount = 0;
foreach (Color color in rawColors)
{
if (!shouldIgnoreColor(color))
{
mColors[validColorCount++] = color;
}
}
if (validColorCount <= maxColors)
{
// The image has fewer colors than the maximum requested, so just return the colors
mQuantizedColors = new List<Swatch>();
foreach (Color color in mColors)
{
try
{
mQuantizedColors.Add(new Swatch(color, mColorPopulations.First(kvp => kvp.Key == color).Value));
}
catch (Exception)
{
}
}
}
else
{
// We need use quantization to reduce the number of colors
mQuantizedColors = quantizePixels(validColorCount - 1, maxColors);
}
}
