Palette::fromImagick()

[vingtcent123]

Hello

Here is a proposition for Imagick integration in Palette.

    /**
     * @param \Imagick $image
     *
     * @return Palette
     *
     * @throws \InvalidArgumentException
     */
    public static function fromImagick(\Imagick $image)
    {
        if (!is_object($image) || $image instanceof \Imagick === FALSE) {
            throw new \InvalidArgumentException('Image must be an Imagick instance');
        }

        $palette = new self();
        $palette->colors = [];

        $iterator = $image->getPixelIterator();

        foreach($iterator as $row) {

            foreach($row as $pixel) {

                $colorInfo = $pixel->getColor();
                $color = ($colorInfo['r'] * 65536) + ($colorInfo['g'] * 256) + ($colorInfo['b']);

                isset($palette->colors[$color]) ?
                    $palette->colors[$color] += 1 :
                    $palette->colors[$color] = 1;

            }

        }

        arsort($palette->colors);

        return $palette;
    }

[MatTheCat]

How about iterating on getImageHistogram?

[MatTheCat]

Well I'll be testing that.