Function buildFunctionPatternMask

docs/jsQR.js:572–595

(version)

    function (p) { return ((((p.y + p.x) % 2) + (p.y * p.x) % 3) % 2) === 0; },
];
function buildFunctionPatternMask(version) {
    var dimension = 17 + 4 * version.versionNumber;
    var matrix = BitMatrix_1.BitMatrix.createEmpty(dimension, dimension);
    matrix.setRegion(0, 0, 9, 9, true); // Top left finder pattern + separator + format
    matrix.setRegion(dimension - 8, 0, 8, 9, true); // Top right finder pattern + separator + format
    matrix.setRegion(0, dimension - 8, 9, 8, true); // Bottom left finder pattern + separator + format
    // Alignment patterns
    for (var _i = 0, _a = version.alignmentPatternCenters; _i < _a.length; _i++) {
        var x = _a[_i];
        for (var _b = 0, _c = version.alignmentPatternCenters; _b < _c.length; _b++) {
            var y = _c[_b];
            if (!(x === 6 && y === 6 || x === 6 && y === dimension - 7 || x === dimension - 7 && y === 6)) {
                matrix.setRegion(x - 2, y - 2, 5, 5, true);
            }
        }
    }
    matrix.setRegion(6, 9, 1, dimension - 17, true); // Vertical timing pattern
    matrix.setRegion(9, 6, dimension - 17, 1, true); // Horizontal timing pattern
    if (version.versionNumber > 6) {
        matrix.setRegion(dimension - 11, 0, 3, 6, true); // Version info, top right
        matrix.setRegion(0, dimension - 11, 6, 3, true); // Version info, bottom left
    }
    return matrix;
}
function readCodewords(matrix, version, formatInfo) {
    var dataMask = DATA_MASKS[formatInfo.dataMask];
    var dimension = matrix.height;