Function drawAlignmentPattern

Libraries/QRCode/src/qrcode.c:299–305

Draws a 5*5 alignment pattern, with the center module at (x, y).

// Draws a 5*5 alignment pattern, with the center module at (x, y).
static void drawAlignmentPattern(BitBucket *modules, BitBucket *isFunction, uint8_t x, uint8_t y) {
    for (int8_t i = -2; i <= 2; i++) {
        for (int8_t j = -2; j <= 2; j++) {
            setFunctionModule(modules, isFunction, x + j, y + i, max(abs(i), abs(j)) != 1);
        }
    }
}

// Draws two copies of the format bits (with its own error correction code)
// based on the given mask and this object's error correction level field.