public void AddFast(ref ColorMoment c2)
{
Alpha += c2.Alpha;
Red += c2.Red;
Green += c2.Green;
Blue += c2.Blue;
Weight += c2.Weight;
Moment += c2.Moment;
}
public static void then_should_add_each_property_value_together()
{
// Arrange
var colorMoment1 = new ColorMoment {
Alpha = 1, Blue = 2, Green = 3, Moment = 4, Red = 5, Weight = 6
};
var colorMoment2 = new ColorMoment {
Alpha = 6, Blue = 5, Green = 4, Moment = 3, Red = 2, Weight = 1
};
// Act
var addedColor = colorMoment1 + colorMoment2;
// Assert
Assert.That(addedColor.Alpha, Is.EqualTo(7));
Assert.That(addedColor.Blue, Is.EqualTo(7));
Assert.That(addedColor.Green, Is.EqualTo(7));
Assert.That(addedColor.Moment, Is.EqualTo(7));
Assert.That(addedColor.Red, Is.EqualTo(7));
Assert.That(addedColor.Weight, Is.EqualTo(7));
}
private (byte?, float) MaxCutInDirection(Box box, int direction, byte first, byte last, ColorMoment boxWholeMoment)
{
ColorMoment bottomMoment = Bottom(box, direction);
float maxScore = 0.0f;
byte? cutPoint = null;
for (byte position = first; position < last; ++position)
{
var lowerHalfMoment = Top(box, direction, position) - bottomMoment;
if (lowerHalfMoment.Count == 0)
{
continue;
}
var upperHalfMoment = boxWholeMoment - lowerHalfMoment;
if (upperHalfMoment.Count == 0)
{
continue;
}
var score = lowerHalfMoment.SquaredSumsOverCount + upperHalfMoment.SquaredSumsOverCount;
// score is boxWholeMoment.Moment - (lowerHalfMoment.Variance + upperHalfMoment.Variance)
// to minimise variance, we want to maximise this
if (score > maxScore)
{
maxScore = score;
cutPoint = position;
}
}
return(cutPoint, maxScore);
}
private static CubeCut Maximize(ColorMoment[,,,] moments, Box cube, int direction, byte first, byte last, ColorMoment whole)
{
var bottom = Bottom(cube, direction, moments);
var result = 0.0f;
byte?cutPoint = null;
for (var position = first; position < last; ++position)
{
var half = bottom + Top(cube, direction, position, moments);
if (half.Weight == 0)
{
continue;
}
var temp = half.WeightedDistance();
half = whole - half;
if (half.Weight != 0)
{
temp += half.WeightedDistance();
if (temp > result)
{
result = temp;
cutPoint = position;
}
}
}
return(new CubeCut(cutPoint, result));
}
private static float CalculateVariance(ColorMoment[,,,] moments, Box cube)
{
ColorMoment volume = Volume(cube, moments);
return(volume.Variance());
}