ohif-viewer/Packages/ohif-viewerbase/client/lib/switchToImageRelative.js

import { viewportUtils } from './viewportUtils';
import { cornerstoneTools } from 'meteor/ohif:cornerstone';

const scroll = cornerstoneTools.import('util/scroll');

/**
 * This function switches to an image given an element and
 * the relative distance from the current image in the stack
 *
 *      e.g. switchToImageRelative(element, -1) to switch to currentImageIdIndex - 1
 *
 * @param element
 * @param {number} [distanceFromCurrentIndex] The image index in the stack to switch to.
 */
export function switchToImageRelative(distanceFromCurrentIndex) {
    var element = viewportUtils.getActiveViewportElement();
    scroll(element, distanceFromCurrentIndex);
}