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<?php |
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/* |
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* This file is part of the Runalyze DEM Reader. |
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* |
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* (c) RUNALYZE <[email protected]> |
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* |
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* This source file is subject to the MIT license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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namespace Runalyze\DEM\Interpolation; |
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use Runalyze\DEM\Exception\InvalidArgumentException; |
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class LambdaInterpolation implements InterpolationInterface |
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{ |
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use ArgumentsCheckTrait; |
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/** @var \Closure */ |
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protected $Lambda; |
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/** |
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* LambdaInterpolation constructor. |
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* @param \Closure $interpolationFunction |
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* @throws InvalidArgumentException |
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*/ |
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public function __construct(\Closure $interpolationFunction) |
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{ |
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if (!$this->isValidClosure($interpolationFunction)) { |
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throw new InvalidArgumentException('Provided closure does not fulfill the requirements.'); |
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} |
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$this->Lambda = $interpolationFunction; |
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} |
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/** |
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* @param \Closure $function |
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* @return bool |
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*/ |
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protected function isValidClosure(\Closure $function) |
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{ |
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$Reflection = new \ReflectionFunction($function); |
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return 3 === $Reflection->getNumberOfRequiredParameters(); |
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} |
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/** |
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* Interpolate. |
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* |
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* p0------------p1 |
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* | | |
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* | y |
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* | | |
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* |--x-- Z |
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* | |
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* p2------------p3 |
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* |
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* @param float $x x position of Z within bounding box, required: $x in [0.0, 1.0] |
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* @param float $y y position of Z within bounding box, required: $y in [0.0, 1.0] |
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* @param array $elevationOnBoundingBox elevation data on [p0, p1, p2, p3] |
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* @return int estimated elevation on point Z |
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* @throws InvalidArgumentException |
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*/ |
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public function interpolate($x, $y, array $elevationOnBoundingBox) |
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{ |
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$this->checkArguments($x, $y, $elevationOnBoundingBox); |
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return $this->Lambda->__invoke($x, $y, $elevationOnBoundingBox); |
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} |
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} |
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Runalyze /
dem-reader
