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<?php |
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/** |
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* PHPCoord. |
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* |
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* @author Doug Wright |
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*/ |
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declare(strict_types=1); |
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namespace PHPCoord\UnitOfMeasure\Time; |
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use PHPCoord\Exception\UnknownUnitOfMeasureException; |
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use PHPCoord\UnitOfMeasure\UnitOfMeasure; |
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use function array_map; |
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abstract class Time implements UnitOfMeasure |
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{ |
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/** |
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* Year. |
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*/ |
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public const EPSG_YEAR = 'urn:ogc:def:uom:EPSG::1029'; |
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/** |
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* @var array<string, array{name: string, fqcn?: class-string<self>, help: string}> |
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*/ |
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protected static array $sridData = [ |
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'urn:ogc:def:uom:EPSG::1029' => [ |
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'name' => 'year', |
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'help' => '', |
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], |
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]; |
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abstract public function __construct(float $time); |
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abstract public function asYears(): Year; |
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public function add(self $unit): self |
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{ |
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if ($this::class === $unit::class) { |
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return new static($this->getValue() + $unit->getValue()); |
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} |
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$resultAsYears = new Year($this->asYears()->getValue() + $unit->asYears()->getValue()); |
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$conversionRatio = (new static(1))->asYears()->getValue(); |
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return new static($resultAsYears->getValue() / $conversionRatio); |
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} |
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public function subtract(self $unit): self |
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{ |
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if ($this::class === $unit::class) { |
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return new static($this->getValue() - $unit->getValue()); |
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} |
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$resultAsYears = new Year($this->asYears()->getValue() - $unit->asYears()->getValue()); |
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$conversionRatio = (new static(1))->asYears()->getValue(); |
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return new static($resultAsYears->getValue() / $conversionRatio); |
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} |
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public function multiply(float $multiplicand): self |
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{ |
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return new static($this->getValue() * $multiplicand); |
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} |
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public function divide(float $divisor): self |
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{ |
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return new static($this->getValue() / $divisor); |
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} |
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public static function makeUnit(float $measurement, string $srid): self |
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{ |
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switch ($srid) { |
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case self::EPSG_YEAR: |
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return new Year($measurement); |
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} |
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throw new UnknownUnitOfMeasureException($srid); |
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} |
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/** |
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* @return array<string, string> |
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*/ |
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public static function getSupportedSRIDs(): array |
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{ |
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return array_map(fn ($supportedSrid) => $supportedSrid['name'], self::$sridData); |
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} |
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/** |
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* @return array<string, array{name: string, help: string}> |
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*/ |
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public static function getSupportedSRIDsWithHelp(): array |
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{ |
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return array_map(fn (array $data) => [ |
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'name' => $data['name'], |
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'help' => $data['help'], |
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], static::$sridData); |
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} |
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public function __toString(): string |
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{ |
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return (string) $this->getValue(); |
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} |
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} |
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dvdoug /
PHPCoord
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