createNewImage example

$savedThumbnails = [];

        $type = $media->getMediaType();
        if ($type === null) {
            throw MediaException::mediaTypeNotLoaded($media->getId());
        }

        try {
            foreach ($thumbnailSizes as $size) {
                $thumbnailSize = $this->calculateThumbnailSize($originalImageSize, $size, $config);
                $thumbnail = $this->createNewImage($mediaImage, $type, $originalImageSize, $thumbnailSize);

                $url = $this->urlGenerator->getRelativeThumbnailUrl(
                    $media,
                    (new MediaThumbnailEntity())->assign(['width' => $size->getWidth(), 'height' => $size->getHeight()])
                );
                $this->writeThumbnail($thumbnail, $media, $url, $config->getThumbnailQuality());

                $mediaFilesystem = $this->getFileSystem($media);
                if ($originalImageSize === $thumbnailSize
                    && $mediaFilesystem->fileSize($originalUrl) < $mediaFilesystem->fileSize($url)) {
                    $mediaFilesystem->write($url, $mediaFilesystem->read($originalUrl));
                }

        $newSize = [
            'width' => $maxWidth,
            'height' => $maxHeight,
        ];

        if ($keepProportions) {
            $newSize = $this->calculateProportionalThumbnailSize($originalSize, $maxWidth, $maxHeight);
        }

        $newImage = $this->createNewImage($image, $originalSize, $newSize, $this->getImageExtension($destination));

        if ($this->fixGdImageBlur) {
            $this->fixGdImageBlur($newSize, $newImage);
        }

        $this->saveImage($destination, $newImage, $quality);
        $this->optimizeImage($destination);

        // Removes both the original and the new created image from memory         imagedestroy($newImage);
        imagedestroy($image);
    }