feature: natürliche Modellklassen können in andere Farbsysteme transformiert werden

src/NaturallyColorModels/CyanMagentaYellowKey.php

@@ -22,6 +22,14 @@ class CyanMagentaYellowKey
         $this->percentValuesHelper = new Helper\PercentValues();
     }
 
+    /**
+     * @return PureCyanMagentaYellowKey
+     */
+    public function getPureColor(): PureCyanMagentaYellowKey
+    {
+        return $this->pureColor;
+    }
+
     /**
      * @return int
      */

src/NaturallyColorModels/Helper/GradValues.php

@@ -10,7 +10,7 @@ class GradValues
 
     public function asGradValue(float $value): int
     {
-        return intval($value * 360);
+        return intval(round($value * 360, 0, PHP_ROUND_HALF_UP));
     }
 
     public function fromGradValue(int $value): float

src/NaturallyColorModels/Helper/PercentValues.php

@@ -10,7 +10,7 @@ class PercentValues
 
     public function asPercentValue(float $value): int
     {
-        return intval($value * 100);
+        return intval(round($value * 100, 0, PHP_ROUND_HALF_UP));
     }
 
     public function fromPercentValue(int $value): float

src/NaturallyColorModels/HueSaturationValue.php

@@ -25,6 +25,14 @@ class HueSaturationValue
         $this->gradValuesHelper = new Helper\GradValues();
     }
 
+    /**
+     * @return PureHueSaturationValue
+     */
+    public function getPureColor(): PureHueSaturationValue
+    {
+        return $this->pureColor;
+    }
+
     /**
      * @return int
      */

src/NaturallyColorModels/RedGreenBlue.php

@@ -21,6 +21,14 @@ class RedGreenBlue
         $this->hexadecimalValuesHelper = new Helper\HexadecimalValues();
     }
 
+    /**
+     * @return PureRedGreenBlue
+     */
+    public function getPureColor(): PureRedGreenBlue
+    {
+        return $this->pureColor;
+    }
+
     /**
      * @return int
      */