video-ad-sdk/dist/adUnit/helpers/media/sortMediaByBestFit.js

VAST/VPAID SDK that allows video ads to be played on top of any player

const APPROXIMATION_LAPSE = 10;
const getRectParams = (rect) => {
    const width = Number(rect.width) || 0;
    const height = Number(rect.height) || 0;
    // NOTE: leaving 1 digit after the decimal point to handle
    //       approximately equal ratios, because aspect ratio
    //       of 480p (854x480) don't strict equal to 360p (640x360)
    const aspectRatio = height
        ? Math.floor((width / height) * APPROXIMATION_LAPSE) / APPROXIMATION_LAPSE
        : 0;
    return {
        aspectRatio,
        height,
        width
    };
};
export const sortMediaByBestFit = (mediaFiles, screenRect) => {
    const screenParams = getRectParams(screenRect);
    const compareTo = (mediaFileA, mediaFileB) => {
        const mediaFileAParams = getRectParams(mediaFileA);
        const mediaFileBParams = getRectParams(mediaFileB);
        const widthDeltaA = Math.abs(screenParams.width - mediaFileAParams.width);
        const widthDeltaB = Math.abs(screenParams.width - mediaFileBParams.width);
        const aspectRatioDeltaA = Math.abs(screenParams.aspectRatio - mediaFileAParams.aspectRatio);
        const aspectRatioDeltaB = Math.abs(screenParams.aspectRatio - mediaFileBParams.aspectRatio);
        return aspectRatioDeltaA - aspectRatioDeltaB || widthDeltaA - widthDeltaB;
    };
    return mediaFiles.slice(0).sort(compareTo);
};