/// <summary>
/// Splits this cube's color list at median index, and returns two newly created cubes.
/// </summary>
/// <param name="componentIndex">Index of the component (red = 0, green = 1, blue = 2).</param>
/// <param name="firstMedianCutCube">The first created cube.</param>
/// <param name="secondMedianCutCube">The second created cube.</param>
public void SplitAtMedian(Byte componentIndex, out MedianCutCube firstMedianCutCube, out MedianCutCube secondMedianCutCube)
{
List <Int32> colors;
switch (componentIndex)
{
// red colors
case 0:
colors = colorList.OrderBy(argb => ColorModelHelper.GetComponentA(ColorModel, TextureBitmap.Color.FromARGB(argb))).ToList();
break;
// green colors
case 1:
colors = colorList.OrderBy(argb => ColorModelHelper.GetComponentB(ColorModel, TextureBitmap.Color.FromARGB(argb))).ToList();
break;
// blue colors
case 2:
colors = colorList.OrderBy(argb => ColorModelHelper.GetComponentC(ColorModel, TextureBitmap.Color.FromARGB(argb))).ToList();
break;
default:
throw new NotSupportedException("Only three color components are supported (R, G and B).");
}
// retrieves the median index (a half point)
Int32 medianIndex = colorList.Count >> 1;
// creates the two half-cubes
firstMedianCutCube = new MedianCutCube(colors.GetRange(0, medianIndex));
secondMedianCutCube = new MedianCutCube(colors.GetRange(medianIndex, colors.Count - medianIndex));
}
/// <summary>
/// Determines whether the color is in the space of this cube.
/// </summary>
/// <param name="color">The color to be checked, if it's contained in this cube.</param>
/// <returns>if true a color is in the space of this cube, otherwise returns false.</returns>
public Boolean IsColorIn(TextureBitmap.Color color)
{
Int32 red = ColorModelHelper.GetComponentA(ColorModel, color);
Int32 green = ColorModelHelper.GetComponentB(ColorModel, color);
Int32 blue = ColorModelHelper.GetComponentC(ColorModel, color);
return((red >= redLowBound && red <= redHighBound) &&
(green >= greenLowBound && green <= greenHighBound) &&
(blue >= blueLowBound && blue <= blueHighBound));
}
/// <summary>
/// Shrinks this cube to the least dimensions that covers all the colors in the RGB space.
/// </summary>
private void Shrink()
{
redLowBound = greenLowBound = blueLowBound = 255;
redHighBound = greenHighBound = blueHighBound = 0;
foreach (Int32 argb in colorList)
{
TextureBitmap.Color color = TextureBitmap.Color.FromARGB(argb);
Int32 red = ColorModelHelper.GetComponentA(ColorModel, color);
Int32 green = ColorModelHelper.GetComponentB(ColorModel, color);
Int32 blue = ColorModelHelper.GetComponentC(ColorModel, color);
if (red < redLowBound)
{
redLowBound = red;
}
if (red > redHighBound)
{
redHighBound = red;
}
if (green < greenLowBound)
{
greenLowBound = green;
}
if (green > greenHighBound)
{
greenHighBound = green;
}
if (blue < blueLowBound)
{
blueLowBound = blue;
}
if (blue > blueHighBound)
{
blueHighBound = blue;
}
}
}
