cnf-qrcode/src/lib/core/finder-pattern.js

generate qrcode,support svg base64 utf8

import { getSymbolSize } from './utils';

const FINDER_PATTERN_SIZE = 7;

/**
 * Returns an array containing the positions of each finder pattern.
 * Each array's element represent the top-left point of the pattern as (x, y) coordinates
 *
 * @param  {Number} version QR Code version
 * @return {Array}          Array of coordinates
 */
export function getPositions(version) {
  const size = getSymbolSize(version);

  return [
    // top-left
    [0, 0],
    // top-right
    [size - FINDER_PATTERN_SIZE, 0],
    // bottom-left
    [0, size - FINDER_PATTERN_SIZE],
  ];
};