/**
* @covers ColorThief\VBox::longestAxis
*/
public function testLongestAxis()
{
$this->vbox->r1 = 225 >> ColorThief::RSHIFT;
$this->vbox->r2 = 247 >> ColorThief::RSHIFT;
$this->vbox->g1 = 180 >> ColorThief::RSHIFT;
$this->vbox->g2 = 189 >> ColorThief::RSHIFT;
$this->vbox->b1 = 180 >> ColorThief::RSHIFT;
$this->vbox->b2 = 228 >> ColorThief::RSHIFT;
$this->assertEquals('b', $this->vbox->longestAxis());
$this->vbox->g1 = 110 >> ColorThief::RSHIFT;
$this->assertEquals('g', $this->vbox->longestAxis());
$this->vbox->r1 = 10 >> ColorThief::RSHIFT;
$this->assertEquals('r', $this->vbox->longestAxis());
}
/**
* @covers ColorThief\VBox::contains
*/
public function testContains()
{
$this->vbox->r1 = 225 >> ColorThief::RSHIFT;
$this->vbox->r2 = 247 >> ColorThief::RSHIFT;
$this->vbox->g1 = 180 >> ColorThief::RSHIFT;
$this->vbox->g2 = 189 >> ColorThief::RSHIFT;
$this->vbox->b1 = 158 >> ColorThief::RSHIFT;
$this->vbox->b2 = 158 >> ColorThief::RSHIFT;
$this->assertTrue($this->vbox->contains(array(225, 190, 158)));
$this->assertFalse($this->vbox->contains(array(200, 189, 158)));
$this->assertFalse($this->vbox->contains(array(255, 189, 158)));
$this->assertFalse($this->vbox->contains(array(225, 50, 158)));
$this->assertFalse($this->vbox->contains(array(225, 200, 158)));
$this->assertFalse($this->vbox->contains(array(225, 189, 100)));
$this->assertFalse($this->vbox->contains(array(225, 189, 200)));
}
/**
* @param array $histo
* @param VBox $vBox
* @return array|void
*/
private static function medianCutApply($histo, $vBox)
{
if (!$vBox->count()) {
return;
}
// If the vbox occupies just one element in color space, it can't be split
if ($vBox->count() == 1) {
return array($vBox->copy());
}
// Select the longest axis for splitting
$cutColor = $vBox->longestAxis();
// Find the partial sum arrays along the selected axis.
list($total, $partialSum) = static::sumColors($cutColor, $histo, $vBox);
return static::doCut($cutColor, $vBox, $partialSum, $total);
}
/**
* @param array $histo
* @param VBox $vBox
* @return array|void
*/
private static function medianCutApply($histo, $vBox)
{
if (!$vBox->count()) {
return;
}
// If the vbox occupies just one element in color space, it can't be split
if ($vBox->count() == 1) {
return array($vBox->copy());
}
// Select the longest axis for splitting
$redWidth = $vBox->r2 - $vBox->r1 + 1;
$greenWidth = $vBox->g2 - $vBox->g1 + 1;
$blueWidth = $vBox->b2 - $vBox->b1 + 1;
$maxWidth = max($redWidth, $greenWidth, $blueWidth);
// Determine the cut planes
switch ($maxWidth) {
case $redWidth:
list($total, $partialSum, $favorColor) = self::sumColors(self::favorRed(), $histo, $vBox);
break;
case $greenWidth:
list($total, $partialSum, $favorColor) = self::sumColors(self::favorGreen(), $histo, $vBox);
break;
case $blueWidth:
default:
list($total, $partialSum, $favorColor) = self::sumColors(self::favorBlue(), $histo, $vBox);
break;
}
return static::doCut($favorColor, $vBox, $partialSum, $total);
}
