Brendt\Image\Scaler\FileSizeScaler::scale()

Complexity

Conditions	3
Paths	1

Size

Total Lines	21
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    public function scale(SplFileInfo $sourceFile, Image $imageObject) : array {
        $fileSize = $sourceFile->getSize();
        $width = $imageObject->getWidth();
        $height = $imageObject->getHeight();
        $ratio = $height / $width;
        $area = $width * $width * $ratio;
        $pixelPrice = $fileSize / $area;

        $sizes = [];

        do {
            // Magic formula.
            $newWidth = floor(sqrt(($fileSize / $pixelPrice) / $ratio));

            $sizes[(int) $newWidth] = (int) $newWidth * $ratio;

            $fileSize = $fileSize * $this->stepModifier;
        } while ($fileSize > $this->minFileSize && $newWidth > $this->minWidth);

        return $sizes;
    }
}