Method intersect

src/component/legend/ScrollableLegendView.ts:519–521

(itemInfo: ItemInfo, winStart: number)

        }

        function intersect(itemInfo: ItemInfo, winStart: number) {
            return itemInfo.e >= winStart && itemInfo.s <= winStart + containerRectSize;
        }
    }

    _findTargetItemIndex(targetDataIndex: number) {