protected function computeBucket(Color $_color)
{
if ($this->useGreyscale) {
return ["grey" => (int) ($_color->getGrey() / $this->bucketQuantity)];
}
return ["red" => (int) ($_color->getRed() / $this->bucketQuantity), "green" => (int) ($_color->getGreen() / $this->bucketQuantity), "blue" => (int) ($_color->getBlue() / $this->bucketQuantity)];
}
protected function compareGreyPixels(Color $_a, Color $_b)
{
return pow($_a->getGrey() - $_b->getGrey(), 2);
}
protected function compareGreyPixels(Color $_a, Color $_b)
{
// jesli napotkalismy na rozne pixele - konczymy porownywanie obrazow
$this->wasCompared = $_a->getGrey() !== $_b->getGrey();
}
protected function compareGreyPixels(Color $_a, Color $_b)
{
return (int) ($_a->getGrey() !== $_b->getGrey());
}
