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<?php namespace Arcanedev\Units\Measures; |
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use Arcanedev\Units\Bases\UnitMeasure; |
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use Arcanedev\Units\Contracts\Measures\Weight as WeightContract; |
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use Arcanedev\Units\Traits\Calculatable; |
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/** |
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* Class Weight |
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* |
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* @package Arcanedev\Units |
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* @author ARCANEDEV <[email protected]> |
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*/ |
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class Weight extends UnitMeasure implements WeightContract |
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{ |
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/* ------------------------------------------------------------------------------------------------ |
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| Traits |
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| ------------------------------------------------------------------------------------------------ |
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*/ |
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use Calculatable; |
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/* ------------------------------------------------------------------------------------------------ |
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| Constructor |
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| ------------------------------------------------------------------------------------------------ |
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*/ |
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/** |
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* Weight constructor. |
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* |
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* @param float|int $value |
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* @param string $unit |
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* @param array $options |
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*/ |
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public function __construct($value = 0, $unit = self::KG, array $options = []) |
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{ |
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$this->init($value, $unit, $options); |
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} |
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/* ------------------------------------------------------------------------------------------------ |
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| Getters & Setters |
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| ------------------------------------------------------------------------------------------------ |
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*/ |
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/** |
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* Get the default names. |
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* |
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* @return array |
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*/ |
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public function defaultNames() |
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{ |
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return array_combine(static::units(), [ |
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'ton', |
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'kilogram', |
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'gram', |
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'milligram', |
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]); |
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} |
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/* ------------------------------------------------------------------------------------------------ |
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| Main Functions |
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| ------------------------------------------------------------------------------------------------ |
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*/ |
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/** |
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* Make a weight instance. |
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* |
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* @param float|int $value |
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* @param string $unit |
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* @param array $options |
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* |
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* @return self |
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*/ |
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public static function make($value = 0, $unit = self::KG, array $options = []) |
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{ |
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return new static($value, $unit, $options); |
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} |
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/** |
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* Convert the weight to the given unit. |
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* |
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* @param string $to |
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* |
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* @return self |
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*/ |
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public function to($to) |
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{ |
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if ($to === $this->unit()) return $this; |
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$value = static::convert($this->unit(), $to, $this->value()); |
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return static::make($value, $to); |
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} |
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/** |
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* Convert the weight. |
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* |
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* @param string $from |
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* @param string $to |
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* @param float|int $value |
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* |
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* @return float|int |
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*/ |
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public static function convert($from, $to, $value) |
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{ |
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return $value * static::getRatio($to, $from); |
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} |
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/* ------------------------------------------------------------------------------------------------ |
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| Calculation Functions |
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| ------------------------------------------------------------------------------------------------ |
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*/ |
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/** |
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* Add the weight. |
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* |
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* @param float|int $value |
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* @param string $unit |
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* |
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* @return self |
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*/ |
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public function addWeight($value, $unit = self::KG) |
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{ |
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return $this->add(self::make($value, $unit)); |
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} |
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/** |
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* Sub the weight. |
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* |
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* @param float|int $value |
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* @param string $unit |
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* |
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* @return self |
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*/ |
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public function subWeight($value, $unit = self::KG) |
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{ |
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return $this->sub(static::make($value, $unit)); |
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} |
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/* ------------------------------------------------------------------------------------------------ |
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| Other Functions |
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| ------------------------------------------------------------------------------------------------ |
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*/ |
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/** |
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* Get the weight convert ratio. |
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* |
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* @param string $to |
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* @param string $from |
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* |
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* @return double|float|integer |
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*/ |
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protected static function getRatio($to, $from) |
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{ |
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static::checkUnit($from); |
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static::checkUnit($to); |
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if ($to === $from) return 1; |
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$ratios = static::getRatios(); |
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return $ratios[$to] / $ratios[$from]; |
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} |
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/** |
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* Get all the weight ratios. |
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* |
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* @return array |
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*/ |
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protected static function getRatios() |
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{ |
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$rate = 1000; |
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$ratios = [ |
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static::TON => 0, |
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static::KG => 1, |
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static::G => 2, |
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static::MG => 3, |
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]; |
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return array_map(function ($ratio) use ($rate) { |
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return static::calculate($rate, '^', $ratio); |
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}, $ratios); |
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} |
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} |
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178
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|
|
ARCANEDEV /
Units
