/* Compare, compares to given colors. If colors are not equal
* the color closest to white is larger color.
*
* @param a, the color to be compared to
* @param b. the color to compare
*
* @return 0: a == b
* @return 1: a > b
* @return -1: a < b
*/
public static int Compare(MColor a, MColor b)
{
if (a is null && b is null)
{
return(0);
}
//A non null color is greater than a null color
if (b is null)
{
return(1);
}
//A null color is not greater than non null color
if (a is null)
{
return(-1);
}
if (a.Name == b.Name && a.HexColor == b.HexColor)
{
return(0);
}
Color ca = a.GetColor();
Color cb = b.GetColor();
float total = 0;
total += ca.r - cb.r;
total += ca.g - cb.g;
total += ca.b - cb.b;
return(total > 0 ? 1 : (total == 0 ? 0 : -1));
}
