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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; |
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use function abs; |
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use DateTime; |
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use DateTimeImmutable; |
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use DateTimeInterface; |
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use PHPCoord\CoordinateReferenceSystem\Vertical; |
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use PHPCoord\Exception\InvalidCoordinateReferenceSystemException; |
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use PHPCoord\UnitOfMeasure\Length\Length; |
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use PHPCoord\UnitOfMeasure\Length\Metre; |
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use PHPCoord\UnitOfMeasure\Scale\Scale; |
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/** |
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* Coordinate representing a vertical dimension. |
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*/ |
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class VerticalPoint extends Point |
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{ |
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/** |
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* Height. |
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*/ |
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protected Length $height; |
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/** |
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* Coordinate reference system. |
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*/ |
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protected Vertical $crs; |
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/** |
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* Coordinate epoch (date for which the specified coordinates represented this point). |
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*/ |
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protected ?DateTimeImmutable $epoch; |
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/** |
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* Constructor. |
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* @param Length $height refer to CRS for preferred unit of measure, but any length unit accepted |
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*/ |
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protected function __construct(Length $height, Vertical $crs, ?DateTimeInterface $epoch = null) |
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{ |
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$this->height = Length::convert($height, $crs->getCoordinateSystem()->getAxes()[0]->getUnitOfMeasureId()); |
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$this->crs = $crs; |
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if ($epoch instanceof DateTime) { |
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$epoch = DateTimeImmutable::createFromMutable($epoch); |
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} |
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$this->epoch = $epoch; |
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} |
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/** |
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* Constructor. |
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* @param Length $height refer to CRS for preferred unit of measure, but any length unit accepted |
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*/ |
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public static function create(Length $height, Vertical $crs, ?DateTimeInterface $epoch = null): self |
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{ |
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return new static($height, $crs, $epoch); |
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} |
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public function getHeight(): Length |
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{ |
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return $this->height; |
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} |
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public function getCRS(): Vertical |
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{ |
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return $this->crs; |
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} |
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public function getCoordinateEpoch(): ?DateTimeImmutable |
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{ |
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return $this->epoch; |
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} |
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public function calculateDistance(Point $to): Length |
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{ |
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if ($to->getCRS()->getSRID() !== $this->crs->getSRID()) { |
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throw new InvalidCoordinateReferenceSystemException('Can only calculate distances between two points in the same CRS'); |
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} |
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/* @var self $to */ |
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return new Metre(abs($this->height->asMetres()->getValue() - $to->height->asMetres()->getValue())); |
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} |
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public function __toString(): string |
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{ |
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return "({$this->height})"; |
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} |
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/** |
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* Vertical Offset |
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* This transformation allows calculation of height (or depth) in the target system by adding the parameter value |
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* to the height (or depth)-value of the point in the source system. |
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*/ |
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public function verticalOffset( |
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Vertical $to, |
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Length $verticalOffset |
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): self { |
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return static::create($this->height->add($verticalOffset), $to); |
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} |
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/** |
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* Height Depth Reversal. |
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*/ |
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public function heightDepthReversal( |
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Vertical $to |
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): self { |
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return static::create($this->height->multiply(-1), $to); |
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} |
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/** |
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* Change of Vertical Unit. |
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*/ |
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public function changeOfVerticalUnit( |
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Vertical $to, |
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Scale $unitConversionScalar |
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) { |
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// units are auto-converted, don't need to use the supplied param |
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return static::create($this->height, $to, $this->epoch); |
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} |
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} |
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This check looks for parameters that have been defined for a function or method, but which are not used in the method body.