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<?php |
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/* |
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* This file is part of the Runalyze Age Grade. |
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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\AgeGrade\Table; |
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use Runalyze\AgeGrade\AgeGrade; |
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/** |
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* Classes extending AbstractTable must provide correctly sized $OpenStandard and $AgeFactors. |
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*/ |
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abstract class AbstractTable implements TableInterface |
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{ |
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/** @var int */ |
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protected $NumDistances; |
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/** @var int */ |
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protected $NumAges; |
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/** @var float[] available distances [km] */ |
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protected $Distances = []; |
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/** @var int[] available ages [from, to] in [years] */ |
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protected $AgeRange = [5, 100]; |
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/** @var float[] open standard times for all available distances in [s] */ |
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protected $OpenStandard = []; |
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/** @var float[] for each age an array with factors for all available distances in [0.0 .. 1.0] */ |
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protected $AgeFactors = []; |
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public function __construct() |
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{ |
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$this->NumDistances = count($this->Distances); |
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$this->NumAges = 1 + $this->AgeRange[1] - $this->AgeRange[0]; |
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} |
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/** |
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* @return array distances with exact age standards [km] |
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*/ |
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public function getAvailableDistances() |
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{ |
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return $this->Distances; |
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} |
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/** |
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* @return float[] open standard times for all available distances in [s] |
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*/ |
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public function getOpenStandard() |
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{ |
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return $this->OpenStandard; |
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} |
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/** |
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* @return array [from, to] in [years] |
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*/ |
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public function getAvailableAgeRange() |
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{ |
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return $this->AgeRange; |
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} |
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/** |
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* @return float [km] |
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*/ |
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public function getMinimalDistance() |
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{ |
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return $this->Distances[0]; |
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} |
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/** |
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* @param int $age [years] |
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* @param float $distance [km] |
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* @param int|float $timeInSeconds [s] |
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* @return float age grade in [0.0 .. 1.0] |
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*/ |
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public function getAgePerformance($age, $distance, $timeInSeconds) |
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{ |
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return $this->getAgeStandard($age, $distance) / $timeInSeconds; |
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} |
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/** |
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* @param int $age [years] |
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* @param float $distance [km] |
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* @param int|float $timeInSeconds [s] |
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* @return AgeGrade |
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*/ |
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public function getAgeGrade($age, $distance, $timeInSeconds) |
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{ |
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$ageStandard = $this->getAgeStandard($age, $distance); |
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$ageFactor = $this->getAgeFactor($age, $distance); |
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$ageGrade = new AgeGrade($ageStandard / $timeInSeconds); |
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$ageGrade->setOriginalResult($distance, $timeInSeconds); |
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$ageGrade->setTableData($ageStandard, $ageFactor); |
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return $ageGrade; |
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} |
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/** |
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* @param int $age [years] |
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* @param float $distance [km] |
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* @return int|float age standard by WMA [s] |
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*/ |
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public function getAgeStandard($age, $distance) |
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{ |
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list($distanceIndex, $fraction) = $this->getDistanceIndexWithFraction($distance); |
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$ageFactor = $this->getAgeFactor($age, $distance); |
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if (1.0 === $fraction) { |
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return $this->OpenStandard[$distanceIndex] / $ageFactor; |
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} |
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return ((1 - $fraction) * $this->OpenStandard[$distanceIndex - 1] + $fraction * $this->OpenStandard[$distanceIndex]) / $ageFactor; |
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} |
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/** |
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* @param int $age [years] |
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* @param float $distance [km] |
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* @return float age grade factor in [0.0 .. 1.0] |
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*/ |
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protected function getAgeFactor($age, $distance) |
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{ |
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$ageIndex = $this->getAgeIndex($age); |
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list($distanceIndex, $fraction) = $this->getDistanceIndexWithFraction($distance); |
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if ($distance <= $this->Distances[0] || $distance >= $this->Distances[$this->NumDistances - 1]) { |
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return $this->AgeFactors[$ageIndex][$distanceIndex]; |
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} |
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return (1 - $fraction) * $this->AgeFactors[$ageIndex][$distanceIndex - 1] + $fraction * $this->AgeFactors[$ageIndex][$distanceIndex]; |
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} |
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/** |
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* @param int $age [years] |
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* @return int age index for internal table |
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*/ |
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protected function getAgeIndex($age) |
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{ |
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list($min, $max) = $this->AgeRange; |
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if ($age < $min) { |
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$age = $min; |
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} elseif ($age > $max) { |
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$age = $max; |
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} |
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return (int) $age - $min; |
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} |
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/** |
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* @param float $distance [km] |
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* @return array [index, fraction] distance index for internal table |
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* fraction belongs to the returned index, (1 - fraction) to (index - 1) |
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*/ |
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protected function getDistanceIndexWithFraction($distance) |
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{ |
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if ($distance <= $this->Distances[0]) { |
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return [0, 1.0]; |
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} |
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if ($distance >= $this->Distances[$this->NumDistances - 1]) { |
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return [$this->NumDistances - 1, 1.0]; |
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} |
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for ($i = 0; $i < $this->NumDistances; ++$i) { |
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if ($this->Distances[$i] >= $distance) { |
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break; |
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} |
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} |
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$i = min($i, $this->NumDistances - 1); |
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$fraction = ($distance - $this->Distances[$i - 1]) / ($this->Distances[$i] - $this->Distances[$i - 1]); |
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return [$i, $fraction]; |
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} |
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} |
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Runalyze /
age-grade
