1 | <?php |
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10 | class Rgb implements Color |
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11 | { |
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12 | private int $red = 0; |
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13 | private int $green = 0; |
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14 | private int $blue = 0; |
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15 | |||
16 | public function __construct(int $red = null, int $green = null, int $blue = null) |
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17 | { |
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18 | if ($red) { |
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19 | $this->setRed($red); |
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20 | } |
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21 | |||
22 | if ($green) { |
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23 | $this->setGreen($green); |
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24 | } |
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25 | |||
26 | if ($blue) { |
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27 | 13 | $this->setBlue($blue); |
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28 | } |
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29 | 13 | } |
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30 | 13 | ||
31 | 13 | public function setRed(int $red): void |
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32 | 13 | { |
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33 | $this->isValid($red); |
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34 | 13 | $this->red = $red; |
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35 | } |
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36 | 13 | ||
37 | 13 | public function setGreen(int $green): void |
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38 | 13 | { |
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39 | $this->isValid($green); |
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40 | 13 | $this->green = $green; |
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41 | } |
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42 | 13 | ||
43 | 13 | public function setBlue(int $blue): void |
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44 | 13 | { |
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45 | $this->isValid($blue); |
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46 | 13 | $this->blue = $blue; |
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47 | } |
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48 | 13 | ||
49 | 13 | public function toString(): string |
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50 | 13 | { |
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51 | return sprintf('rgb(%s, %s, %s)', $this->red, $this->green, $this->blue); |
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52 | 7 | } |
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53 | |||
54 | 7 | private function isValid(int $value): void |
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55 | { |
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56 | if ($value < 0 || $value > 255 ) { |
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57 | 13 | throw new OutOfRangeException('Value out of range (0-255).'); |
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58 | } |
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59 | 13 | } |
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60 | } |
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61 |