public static DensitySource IdentifyDensitySource(Color[] voxels)
{
DensitySource source = DensitySource.Unknown;
for (int i = 0; i < voxels.Length - 1; i++)
{
if (!Mathf.Approximately(voxels[i].a, voxels[i + 1].a))
{
source = DensitySource.Alpha;
break;
}
else if (!Mathf.Approximately(voxels[i].r, voxels[i + 1].r))
{
source = DensitySource.Grey;
break;
}
else if (!Mathf.Approximately(voxels[i].g, voxels[i + 1].g))
{
source = DensitySource.Grey;
break;
}
else if (!Mathf.Approximately(voxels[i].b, voxels[i + 1].b))
{
source = DensitySource.Grey;
break;
}
}
return(source);
}
public static int[] ConvertColorsToDensities(Color[] colors, DensitySource source)
{
int[] densities = new int[colors.Length];
for (int i = 0; i < densities.Length; i++)
{
densities[i] = ConvertColorToDensity(colors[i], source);
}
return(densities);
}
public static Color ConvertDensityToColor(int density, DensitySource source)
{
float grey = source == DensitySource.Grey ? density / 255f : 0f;
float alpha = source == DensitySource.Alpha ? density / 255f : 0f;
return(new Color()
{
r = grey,
g = grey,
b = grey,
a = alpha
});
}
public static int ConvertColorToDensity(Color color, DensitySource source)
{
switch (source)
{
case DensitySource.Alpha:
return(Mathf.RoundToInt(color.a * 255f));
case DensitySource.Grey:
return(Mathf.RoundToInt(color.r * 255f));
default:
throw new ArgumentOutOfRangeException(source.ToString());
}
}
public static int[] ConvertColorsToDensities(Color[] colors)
{
DensitySource source = IdentifyDensitySource(colors);
return(ConvertColorsToDensities(colors, source));
}