/**
* Restores the state of precision setting
*
*/
public static function restore()
{
if (self::$oldPrecision !== null && function_exists('ini_set')) {
ini_set('precision', self::$oldPrecision[0]);
ini_set('bcmath.scale', self::$oldPrecision[1]);
bcscale(self::$oldPrecision[1]);
}
self::$setup = false;
}
public function testIssue()
{
if ($this->locale === false) {
$this->markTestSkipped('The test locale could not be set.');
}
ILess_Math::setup();
ILess_UnitConversion::setup();
$this->assertEquals(array('rad' => '0.1591549430918953', 'deg' => '0.0027777777777777', 'grad' => '0.0025000000000000', 'turn' => '1'), ILess_UnitConversion::$angle, 'The math setup works');
}
/**
* Setups conversions with given precision.
*
*/
public static function setup()
{
if (self::$setup !== false) {
return;
}
self::$angle = array('rad' => ILess_Math::divide(1, ILess_Math::multiply('2', str_replace(',', '.', M_PI))), 'deg' => ILess_Math::divide(1, 360), 'grad' => ILess_Math::divide(1, 400), 'turn' => '1');
self::$length = array('m' => '1', 'cm' => '0.01', 'mm' => '0.001', 'in' => '0.0254', 'pt' => ILess_Math::divide('0.0254', '72'), 'pc' => ILess_Math::multiply(ILess_Math::divide('0.0254', '72'), '12'));
self::$setup = true;
}
public function setUp()
{
$this->registry = new ILess_FunctionRegistry(array(), new ILess_Environment());
ILess_Math::setup();
}
/**
* Restores the math precision
*
* @return void
*/
private function restoreMathAndLocale()
{
ILess_Math::restore();
ILess_UnitConversion::restore();
}
/**
* Returns the 'value' channel of @color in the HSV space
*
* @param ILess_Node_Color $color
* @return string
*/
public function hsvvalue(ILess_Node $color)
{
if (!$color instanceof ILess_Node_Color) {
return $color;
}
$hsv = $color->toHSV();
return new ILess_Node_Dimension(ILess_Math::round($hsv['v'] * 100), '%');
}
/**
* Operations have to be done per-channel, if not,
* channels will spill onto each other. Once we have
* our result, in the form of an integer triplet,
* we create a new color node to hold the result.
*
* @param ILess_Environment $env
* @param string $op
* @param ILess_Node $other
* @return ILess_Node_Color
* @throws InvalidArgumentException
*/
public function operate(ILess_Environment $env, $op, ILess_Node $other)
{
$result = array();
if (!$other instanceof ILess_Node_Color) {
if (!self::methodExists($other, 'toColor')) {
throw new InvalidArgumentException('The other node must implement toColor() method to operate');
}
$other = $other->toColor();
if (!$other instanceof ILess_Node_Color) {
throw new InvalidArgumentException('The toColor() method must return an instance of ILess_Node_Color');
}
}
$t = $this->getRGB();
$o = $other->getRGB();
for ($c = 0; $c < 3; $c++) {
$result[$c] = ILess_Math::operate($op, $t[$c], $o[$c]);
if ($result[$c] > 255) {
$result[$c] = 255;
} elseif ($result < 0) {
$result[$c] = 0;
}
}
return new ILess_Node_Color($result, $this->color->getAlpha() + $other->color->getAlpha());
}
/**
* Returns the string representation in ARGB model
*
* @return string
*/
public function toARGB()
{
$argb = array_merge(array(ILess_Math::clean(ILess_Math::round($this->alpha * 256))), $this->rgb);
$result = '';
foreach ($argb as $i) {
$i = ILess_Math::round($i);
$i = dechex($i > 255 ? 255 : ($i < 0 ? 0 : $i));
$result .= str_pad($i, 2, '0', STR_PAD_LEFT);
}
return '#' . $result;
}
public function setUp()
{
// we need the precision setup
ILess_Math::setup(16);
}
/**
* @covers round
* @dataProvider getDataForRoundTest
*/
public function testRound($value, $precision, $expected)
{
$this->assertEquals($expected, ILess_Math::round($value, $precision), sprintf('Rounding of "%s" with precision "%s" works', $value, $precision));
}
public function __construct(ILess_Environment $env, ILess_Importer $importer)
{
parent::__construct($env, $importer);
ILess_Math::setup(16);
ILess_UnitConversion::setup();
}
/**
* Converts to another unit
*
* @param array|string $conversions
* @return ILess_Node_Dimension
*/
public function convertTo($conversions)
{
$value = $this->value;
$unit = clone $this->unit;
if (is_string($conversions)) {
$derivedConversions = array();
foreach (ILess_UnitConversion::$groups as $i) {
if (isset(ILess_UnitConversion::${$i}[$conversions])) {
$derivedConversions = array($i => $conversions);
}
}
$conversions = $derivedConversions;
}
foreach ($conversions as $groupName => $targetUnit) {
$group = ILess_UnitConversion::${$groupName};
// numerator
for ($i = 0, $count = count($unit->numerator); $i < $count; $i++) {
$atomicUnit = $unit->numerator[$i];
if (is_object($atomicUnit)) {
continue;
}
if (!isset($group[$atomicUnit])) {
continue;
}
$value = ILess_Math::multiply($value, ILess_Math::divide($group[$atomicUnit], $group[$targetUnit]));
$unit->numerator[$i] = $targetUnit;
}
// denominator
for ($i = 0, $count = count($unit->denominator); $i < $count; $i++) {
$atomicUnit = $unit->denominator[$i];
if (!isset($group[$atomicUnit])) {
continue;
}
// $value = $value / ($group[$atomicUnit] / $group[$targetUnit]);
$value = ILess_Math::divide($value, ILess_Math::divide($group[$atomicUnit], $group[$targetUnit]));
$unit->denominator[$i] = $targetUnit;
}
}
$unit->cancel();
return new ILess_Node_Dimension($value, $unit);
}
