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Pull Request — master (#34)
by Benjamin
26:50 queued 11:50
created

Algorithm::findCentroid()   A

↳ Parent: Algorithm

Complexity

Conditions 2
Paths 2

Size

Total Lines 13
Code Lines 6

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 2
eloc 6
c 1
b 0
f 0
nc 2
nop 1
dl 0
loc 13
rs 10
1 
<?php
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namespace Kmeans\Gps;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Kmeans\Algorithm as BaseAlgorithm;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Kmeans\Interfaces\PointCollectionInterface;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Kmeans\Interfaces\PointInterface;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Kmeans\Math;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class Algorithm extends BaseAlgorithm

            


            
                                                                                                            
                            
            
                                    
            
            

                
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{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    public function getDistanceBetween(PointInterface $pointA, PointInterface $pointB): float

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        if (! $pointA instanceof Point || ! $pointB instanceof Point) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            throw new \InvalidArgumentException(

            


            
                                                                                                            
                            
            
                                    
            
            

                
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                "GPS algorithm can only calculate distance from GPS locations"

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            );

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        return Math::haversine($pointA->getCoordinates(), $pointB->getCoordinates());

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    public function findCentroid(PointCollectionInterface $points): PointInterface

            


            
                                                                        
                            
            
                                    
            
            

                
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    {

            


            
                                                                        
                            
            
                                    
            
            

                
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        if (! $points->getSpace() instanceof Space) {

            


            
                                                                        
                            
            
                                    
            
            

                
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            throw new \InvalidArgumentException(

            


            
                                                                        
                            
            
                                    
            
            

                
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                "Point collection should consist of GPS coordinates"

            


            
                                                                        
                            
            
                                    
            
            

                
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            );

            


            
                                                                        
                            
            
                                    
            
            

                
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        }

            


            
                                                                        
                            
            
                                    
            
            

                
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        /** @var array<Point> $pointsArray */

            


            
                                                                        
                            
            
                                    
            
            

                
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        $pointsArray = iterator_to_array($points);

            


            
                                                                        
                            
            
                                    
            
            

                
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        return $points->getSpace()->makePoint(Math::gpsCentroid(

            


            
                                                                        
                            
            
                                    
            
            

                
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            array_map(fn (Point $point) => $point->getCoordinates(), $pointsArray)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        ));

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
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