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<?php
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namespace PhpOffice\PhpSpreadsheet\Worksheet\Drawing;
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use PhpOffice\PhpSpreadsheet\IComparable;
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use PhpOffice\PhpSpreadsheet\Style\Color;
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class Shadow implements IComparable
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{
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    // Shadow alignment
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    const SHADOW_BOTTOM = 'b';
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    const SHADOW_BOTTOM_LEFT = 'bl';
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    const SHADOW_BOTTOM_RIGHT = 'br';
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    const SHADOW_CENTER = 'ctr';
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    const SHADOW_LEFT = 'l';
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    const SHADOW_TOP = 't';
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    const SHADOW_TOP_LEFT = 'tl';
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    const SHADOW_TOP_RIGHT = 'tr';
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    /**
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     * Visible.
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     *
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     * @var bool
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     */
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    private $visible;
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    /**
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     * Blur radius.
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     *
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     * Defaults to 6
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     *
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     * @var int
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     */
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    private $blurRadius;
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    /**
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     * Shadow distance.
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     *
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     * Defaults to 2
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     *
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     * @var int
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     */
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    private $distance;
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    /**
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     * Shadow direction (in degrees).
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     *
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     * @var int
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     */
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    private $direction;
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    /**
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     * Shadow alignment.
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     *
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     * @var string
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     */
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    private $alignment;
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    /**
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     * Color.
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     *
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     * @var Color
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     */
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    private $color;
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    /**
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     * Alpha.
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     *
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     * @var int
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     */
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    private $alpha;
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    /**
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     * Create a new Shadow.
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     */
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    public function __construct()
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    {
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        // Initialise values
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        $this->visible = false;
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        $this->blurRadius = 6;
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        $this->distance = 2;
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        $this->direction = 0;
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        $this->alignment = self::SHADOW_BOTTOM_RIGHT;
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        $this->color = new Color(Color::COLOR_BLACK);
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        $this->alpha = 50;
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    }
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    /**
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     * Get Visible.
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     *
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     * @return bool
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     */
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    public function getVisible()
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    {
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        return $this->visible;
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    }
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    /**
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     * Set Visible.
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     *
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     * @param bool $visible
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     *
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     * @return $this
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     */
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    public function setVisible($visible)
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    {
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        $this->visible = $visible;
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        return $this;
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    }
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    /**
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     * Get Blur radius.
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     *
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     * @return int
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     */
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    public function getBlurRadius()
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    {
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        return $this->blurRadius;
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    }
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    /**
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     * Set Blur radius.
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     *
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     * @param int $blurRadius
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     *
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     * @return $this
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     */
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    public function setBlurRadius($blurRadius)
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    {
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        $this->blurRadius = $blurRadius;
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        return $this;
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    }
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    /**
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     * Get Shadow distance.
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     *
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     * @return int
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     */
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    public function getDistance()
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    {
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        return $this->distance;
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    }
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    /**
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     * Set Shadow distance.
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     *
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     * @param int $distance
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     *
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     * @return $this
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     */
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    public function setDistance($distance)
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    {
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        $this->distance = $distance;
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        return $this;
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    }
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    /**
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     * Get Shadow direction (in degrees).
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     *
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     * @return int
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     */
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    public function getDirection()
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    {
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        return $this->direction;
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    }
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    /**
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     * Set Shadow direction (in degrees).
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     *
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     * @param int $direction
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     *
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     * @return $this
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     */
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    public function setDirection($direction)
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    {
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        $this->direction = $direction;
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        return $this;
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    }
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    /**
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     * Get Shadow alignment.
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     *
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     * @return string
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     */
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    public function getAlignment()
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    {
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        return $this->alignment;
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    }
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    /**
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     * Set Shadow alignment.
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     *
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     * @param string $alignment
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     *
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     * @return $this
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     */
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    public function setAlignment($alignment)
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    {
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        $this->alignment = $alignment;
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        return $this;
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    }
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    /**
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     * Get Color.
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     *
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     * @return Color
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     */
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    public function getColor()
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    {
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        return $this->color;
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    }
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    /**
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     * Set Color.
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     *
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     * @return $this
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     */
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    public function setColor(Color $color)
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    {
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        $this->color = $color;
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        return $this;
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    }
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    /**
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     * Get Alpha.
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     *
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     * @return int
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     */
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    public function getAlpha()
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    {
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        return $this->alpha;
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    }
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    /**
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     * Set Alpha.
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     *
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     * @param int $alpha
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     *
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     * @return $this
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     */
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    public function setAlpha($alpha)
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    {
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        $this->alpha = $alpha;
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        return $this;
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    }
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    /**
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     * Get hash code.
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     *
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     * @return string Hash code
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     */
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    public function getHashCode()
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    {
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        return md5(
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            ($this->visible ? 't' : 'f') .
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            $this->blurRadius .
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            $this->distance .
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            $this->direction .
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            $this->alignment .
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            $this->color->getHashCode() .
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            $this->alpha .
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            __CLASS__
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        );
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    }
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    /**
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     * Implement PHP __clone to create a deep clone, not just a shallow copy.
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     */
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    public function __clone()
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    {
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        $vars = get_object_vars($this);
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        foreach ($vars as $key => $value) {
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            if (is_object($value)) {
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                $this->$key = clone $value;
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            } else {
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                $this->$key = $value;
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            }
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        }
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    }
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}