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<?php |
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declare(strict_types = 1); |
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namespace SportTrackerConnector\Core\Workout; |
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use Assert\Assertion; |
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use SportTrackerConnector\Core\Workout\Extension\ExtensionInterface; |
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/** |
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* A point in a track. |
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*/ |
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final class TrackPoint |
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{ |
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/** |
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* Latitude of the point. |
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* |
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* @var float |
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*/ |
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private $latitude; |
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/** |
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* Longitude of the point. |
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* |
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* @var float |
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*/ |
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private $longitude; |
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/** |
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* Elevation of the point. |
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* |
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* @var float |
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*/ |
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private $elevation; |
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/** |
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* The time for the point. |
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* |
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* @var \DateTimeImmutable |
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*/ |
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private $dateTime; |
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/** |
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* Array of extensions. |
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* |
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* @var ExtensionInterface[] |
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*/ |
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private $extensions = array(); |
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/** |
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* @param float $latitude The latitude. |
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* @param float $longitude The longitude. |
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* @param \DateTimeImmutable $dateTime The date and time of the point. |
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* @param float|null $elevation |
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* @param array $extensions |
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*/ |
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private function __construct( |
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?float $latitude, |
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?float $longitude, |
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\DateTimeImmutable $dateTime, |
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?float $elevation, |
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array $extensions = [] |
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) { |
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$this->latitude = $latitude; |
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$this->longitude = $longitude; |
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$this->dateTime = $dateTime; |
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$this->elevation = $elevation; |
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foreach ($extensions as $extension) { |
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$this->addExtension($extension); |
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} |
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} |
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/** |
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* Add an extension to the workout. |
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* |
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* @param ExtensionInterface $extension The extension to add. |
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*/ |
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private function addExtension(ExtensionInterface $extension) |
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{ |
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$this->extensions[$extension::ID()] = $extension; |
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} |
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/** |
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* @param float|null $latitude |
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* @param float|null $longitude |
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* @param \DateTimeImmutable $dateTime |
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* @param float|null $elevation |
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* @param array $extensions |
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* @return TrackPoint |
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*/ |
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public static function with( |
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?float $latitude, |
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?float $longitude, |
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\DateTimeImmutable $dateTime, |
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?float $elevation = null, |
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array $extensions = [] |
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): TrackPoint { |
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Assertion::greaterOrEqualThan($latitude, -180); |
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Assertion::greaterOrEqualThan($longitude, -180); |
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Assertion::lessOrEqualThan($latitude, 180); |
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Assertion::lessOrEqualThan($longitude, 180); |
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Assertion::allIsInstanceOf($extensions, ExtensionInterface::class); |
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return new static($latitude, $longitude, $dateTime, $elevation, $extensions); |
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} |
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/** |
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* Get the elevation. |
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* |
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* @return float |
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*/ |
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public function elevation(): float |
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{ |
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return $this->elevation; |
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} |
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/** |
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* Get the extensions. |
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* |
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* @return ExtensionInterface[] |
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*/ |
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public function extensions(): array |
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{ |
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return array_values($this->extensions); |
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} |
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/** |
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* Check if an extension is present. |
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* |
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* @param string $idExtension The ID of the extension. |
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* @return boolean |
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*/ |
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public function hasExtension(string $idExtension): bool |
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{ |
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return array_key_exists($idExtension, $this->extensions); |
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} |
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/** |
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* Get an extension by ID. |
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* |
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* @param string $idExtension The ID of the extension. |
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* @return ExtensionInterface |
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* @throws \OutOfBoundsException If the extension is not found. |
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*/ |
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public function extension($idExtension): ExtensionInterface |
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{ |
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if ($this->hasExtension($idExtension) !== true) { |
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throw new \OutOfBoundsException(sprintf('Extension "%s" not found.', $idExtension)); |
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} |
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return $this->extensions[$idExtension]; |
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} |
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/** |
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* Get the latitude. |
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* |
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* @return float |
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*/ |
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public function latitude(): ?float |
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{ |
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return $this->latitude; |
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} |
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/** |
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* Get the longitude. |
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* |
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* @return float |
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*/ |
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public function longitude(): ?float |
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{ |
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return $this->longitude; |
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} |
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/** |
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* Get the date time of the point. |
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* |
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* @return \DateTimeImmutable |
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*/ |
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public function dateTime(): \DateTimeImmutable |
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{ |
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return $this->dateTime; |
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} |
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/** |
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* Get the distance between this point and another point in meters. |
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* |
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* @param TrackPoint $trackPoint The other point. |
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* @return float The distance in meters. |
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*/ |
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public function distanceFromPoint(TrackPoint $trackPoint): float |
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{ |
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$earthRadius = 6371000; |
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$latFrom = deg2rad($this->latitude()); |
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$lonFrom = deg2rad($this->longitude()); |
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$latTo = deg2rad($trackPoint->latitude()); |
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$lonTo = deg2rad($trackPoint->longitude()); |
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$latDelta = $latTo - $latFrom; |
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$lonDelta = $lonTo - $lonFrom; |
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$angle = 2 * asin( |
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sqrt( |
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pow(sin($latDelta / 2), 2) + |
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cos($latFrom) * cos($latTo) * pow(sin($lonDelta / 2), 2) |
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) |
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); |
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return $angle * $earthRadius; |
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} |
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/** |
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* Get the speed between this point and another point in km/h. |
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* |
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* @param TrackPoint $trackPoint The other point. |
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* @return float |
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*/ |
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public function speed(TrackPoint $trackPoint): float |
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{ |
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$start = $this->dateTime(); |
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$end = $trackPoint->dateTime(); |
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$dateDiff = $start->diff($end); |
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$secondsDifference = ($dateDiff->days * 86400) + ($dateDiff->h * 3600) + ($dateDiff->i * 60) + $dateDiff->s; |
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if ($secondsDifference === 0) { |
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return 0.0; |
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} |
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$distance = $this->distanceFromPoint($trackPoint); |
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return ($distance / $secondsDifference) * 3.6; |
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} |
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} |
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