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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 function abs; |
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use PHPCoord\CoordinateReferenceSystem\Geographic; |
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use PHPCoord\GeographicPoint; |
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use PHPCoord\UnitOfMeasure\Length\Metre; |
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class IGNFGeocentricTranslationGrid extends GeographicGrid |
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{ |
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use IGNFGrid; |
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public function applyForwardAdjustment(GeographicPoint $point, Geographic $to): GeographicPoint |
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{ |
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[$tx, $ty, $tz] = $this->getValues($point->getLongitude()->asDegrees()->getValue(), $point->getLatitude()->asDegrees()->getValue()); |
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return $point->geocentricTranslation( |
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$to, |
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$tx, |
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$ty, |
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$tz, |
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); |
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} |
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public function applyReverseAdjustment(GeographicPoint $point, Geographic $to): GeographicPoint |
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{ |
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$adjustment = [new Metre(0), new Metre(0), new Metre(0)]; |
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$latitude = $point->getLatitude(); |
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$longitude = $point->getLongitude(); |
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do { |
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$prevAdjustment = $adjustment; |
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$adjustment = $this->getValues($longitude->asDegrees()->getValue(), $latitude->asDegrees()->getValue()); |
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$newPoint = $point->geocentricTranslation( |
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$to, |
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$adjustment[0]->multiply(-1), |
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$adjustment[1]->multiply(-1), |
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$adjustment[2]->multiply(-1), |
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); |
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$latitude = $newPoint->getLatitude(); |
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$longitude = $newPoint->getLongitude(); |
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} while (abs($adjustment[0]->subtract($prevAdjustment[0])->getValue()) > self::ITERATION_CONVERGENCE && abs($adjustment[1]->subtract($prevAdjustment[1])->getValue()) > self::ITERATION_CONVERGENCE && abs($adjustment[2]->subtract($prevAdjustment[2])->getValue()) > self::ITERATION_CONVERGENCE); |
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return $newPoint; |
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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 $y): array |
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{ |
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$offsets = $this->interpolate($x, $y); |
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return [new Metre($offsets[0]), new Metre($offsets[1]), new Metre($offsets[2])]; |
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} |
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} |
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dvdoug /
PHPCoord
