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Completed
Push — master ( 8dbce3...a69053 )
by Patrick
02:15
created

RGBTransition::supports()   A

↳ Parent: RGBTransition

Complexity

Conditions 1
Paths 1

Size

Total Lines 3
Code Lines 1

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 1
eloc 1
nc 1
nop 1
dl 0
loc 3
rs 10
c 0
b 0
f 0
1 
<?php
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declare(strict_types=1);

            


            
                                                                                                            
                            
            
                                    
            
            

                
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namespace Artack\Color\Transition;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Artack\Color\Color\Color;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Artack\Color\Color\RGB;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Webmozart\Assert\Assert;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class RGBTransition implements TransitionInterface

            


            
                                                                                                            
                            
            
                                    
            
            

                
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{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    public function interpolate(Color $startColor, Color $endColor, float $value, float $max): Color

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        /* @var RGB $startColor */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        Assert::isInstanceOf($startColor, RGB::class, sprintf('startColor needs to be an instance of [%s]', RGB::class));

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        /* @var RGB $endColor */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        Assert::isInstanceOf($endColor, RGB::class, sprintf('endColor needs to be an instance of [%s]', RGB::class));

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $step = $value / $max;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $red = $startColor->getRed() + ($endColor->getRed() - $startColor->getRed()) * $step;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $green = $startColor->getGreen() + ($endColor->getGreen() - $startColor->getGreen()) * $step;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $blue = $startColor->getBlue() + ($endColor->getBlue() - $startColor->getBlue()) * $step;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        return new RGB((int) round($red), (int) round($green), (int) round($blue));

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    public function supports(string $fqcn): bool

            


            
                                                                        
                            
            
                                    
            
            

                
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    {

            


            
                                                                        
                            
            
                                    
            
            

                
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        return RGB::class === $fqcn;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
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