private function CSSmin::hslToRgb in Advanced CSS/JS Aggregation 7.2

Converts a HSL color into a RGB color

Parameters

array $hslValues:

Return value

array

1 call to CSSmin::hslToRgb()

CSSmin::hslToHex in advagg_css_compress/yui/CSSMin.inc

File

advagg_css_compress/yui/CSSMin.inc, line 1114

Class

CSSmin

Code

private function hslToRgb($hslValues) {
  $h = floatval($hslValues[0]);
  $s = floatval(str_replace('%', '', $hslValues[1]));
  $l = floatval(str_replace('%', '', $hslValues[2]));

  // Wrap and clamp, then fraction!
  $h = ($h % 360 + 360) % 360 / 360;
  $s = $this
    ->clampNumber($s, 0, 100) / 100;
  $l = $this
    ->clampNumber($l, 0, 100) / 100;
  if ($s == 0) {
    $r = $g = $b = $this
      ->roundNumber(255 * $l);
  }
  else {
    $v2 = $l < 0.5 ? $l * (1 + $s) : $l + $s - $s * $l;
    $v1 = 2 * $l - $v2;
    $r = $this
      ->roundNumber(255 * $this
      ->hueToRgb($v1, $v2, $h + 1 / 3));
    $g = $this
      ->roundNumber(255 * $this
      ->hueToRgb($v1, $v2, $h));
    $b = $this
      ->roundNumber(255 * $this
      ->hueToRgb($v1, $v2, $h - 1 / 3));
  }
  return array(
    $r,
    $g,
    $b,
  );
}