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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\CoordinateOperation; |
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use Composer\Pcre\Preg; |
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use PHPCoord\UnitOfMeasure\Length\Metre; |
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use SplFixedArray; |
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use function explode; |
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use function trim; |
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use function assert; |
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class OSGM15IrelandGrid extends GeographicGeoidHeightGrid |
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{ |
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use BilinearInterpolation; |
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/** |
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* @var SplFixedArray<float> |
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*/ |
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private SplFixedArray $textData; |
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public function __construct(string $filename) |
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{ |
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$this->gridFile = new GridFile($filename); |
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$this->storageOrder = self::STORAGE_ORDER_INCREASING_LONGITUDE_DECREASING_LATIITUDE; |
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$header = Preg::split('/\s+/', trim($this->gridFile->fgets())); |
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$this->startX = (float) $header[2]; |
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$this->startY = (float) $header[0]; |
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$this->endX = (float) $header[3]; |
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$this->endY = (float) $header[1]; |
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$this->columnGridInterval = (float) $header[5]; |
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$this->rowGridInterval = (float) $header[4]; |
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$this->numberOfColumns = (int) (string) (($this->endX - $this->startX) / $this->columnGridInterval) + 1; |
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$this->numberOfRows = (int) (string) (($this->endY - $this->startY) / $this->rowGridInterval) + 1; |
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$this->textData = new SplFixedArray($this->numberOfColumns * $this->numberOfRows); |
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$index = 0; |
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while (!$this->gridFile->eof()) { |
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$rawData = trim($this->gridFile->fgets()); |
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if ($rawData) { |
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$values = explode(' ', trim(Preg::replace('/\s+/', ' ', $rawData))); |
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foreach ($values as $value) { |
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$this->textData[$index] = (float) $value; |
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++$index; |
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} |
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} |
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} |
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} |
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/** |
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* @return Metre[] |
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*/ |
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public function getValues(float $x, float $y): array |
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{ |
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$shift = $this->interpolate($x, $y)[0]; |
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return [new Metre($shift)]; |
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} |
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private function getRecord(int $longitudeIndex, int $latitudeIndex): GridValues |
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{ |
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$recordId = ($this->numberOfRows - $latitudeIndex - 1) * $this->numberOfColumns + $longitudeIndex; |
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$longitude = $longitudeIndex * $this->columnGridInterval + $this->startX; |
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$latitude = $latitudeIndex * $this->rowGridInterval + $this->startY; |
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assert($this->textData[$recordId] !== null); |
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return new GridValues( |
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$longitude, |
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$latitude, |
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[$this->textData[$recordId]] |
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); |
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} |
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} |
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dvdoug /
PHPCoord
This check looks for private methods that have been defined, but are not used inside the class.