public static BufferedImage scaleImage()

in thumbnails4j-core/src/main/java/co/elastic/thumbnails4j/core/ThumbnailUtils.java [86:112]

• 20 lines of code
• 3 McCabe index (conditional complexity)

    public static BufferedImage scaleImage(BufferedImage image, Dimensions dimensions, int imageType){
        int scaledWidth = image.getWidth();
        int scaledHeight = image.getHeight();

        double widthRatio = ((double)scaledWidth)/dimensions.getWidth();
        double heightRatio = ((double) scaledHeight)/dimensions.getHeight();

        double aspectRatio = Math.max(widthRatio, heightRatio);
        int targetWidth = (int) Math.round(scaledWidth/aspectRatio);
        int targetHeight = (int) Math.round(scaledHeight/aspectRatio);

        // until we reach the desired width/height
        while (scaledWidth != targetWidth || scaledHeight != targetHeight) {
            scaledWidth = scaleDimension(scaledWidth, targetWidth);
            scaledHeight = scaleDimension(scaledHeight, targetHeight);

            // redraw the image with the new width/height for this iteration
            BufferedImage temp = new BufferedImage(scaledWidth, scaledHeight, imageType);
            Graphics2D graphics = temp.createGraphics();
            graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
            graphics.drawImage(image, 0, 0, scaledWidth, scaledHeight, null);
            graphics.dispose();
            image = temp;
        }

        return image;
    }