MatrixUtil (Javadocs [I2P+ 2.13.0+]

java.lang.Object
- com.google.zxing.qrcode.encoder.MatrixUtil

```
final class MatrixUtil
extends Object
```
Utility class for QR code matrix operations.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`(package private) static void`	`buildMatrix(BitArray dataBits, ErrorCorrectionLevel ecLevel, Version version, int maskPattern, ByteMatrix matrix)` Build the QR code matrix
`(package private) static int`	`calculateBCHCode(int value, int poly)` Calculate BCH code
`(package private) static void`	`clearMatrix(ByteMatrix matrix)` Set all cells to empty (-1)
`(package private) static void`	`embedBasicPatterns(Version version, ByteMatrix matrix)` Embed position detection, timing, and adjustment patterns
`(package private) static void`	`embedDataBits(BitArray dataBits, int maskPattern, ByteMatrix matrix)` Embed data bits into matrix
`(package private) static void`	`embedTypeInfo(ErrorCorrectionLevel ecLevel, int maskPattern, ByteMatrix matrix)` Embed type information
`(package private) static int`	`findMSBSet(int value)`
`(package private) static void`	`makeTypeInfoBits(ErrorCorrectionLevel ecLevel, int maskPattern, BitArray bits)` Make type information bit vector
`(package private) static void`	`makeVersionInfoBits(Version version, BitArray bits)` Make version information bit vector
`(package private) static void`	`maybeEmbedVersionInfo(Version version, ByteMatrix matrix)` Embed version info if version >= 7

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

buildMatrix

static void buildMatrix(BitArray dataBits,
                        ErrorCorrectionLevel ecLevel,
                        Version version,
                        int maskPattern,
                        ByteMatrix matrix)
                 throws WriterException

Build the QR code matrix

Throws:: WriterException

calculateBCHCode

static int calculateBCHCode(int value,
                            int poly)

Calculate BCH code

clearMatrix

static void clearMatrix(ByteMatrix matrix)

Set all cells to empty (-1)

embedBasicPatterns

static void embedBasicPatterns(Version version,
                               ByteMatrix matrix)
                        throws WriterException

Embed position detection, timing, and adjustment patterns

Throws:: WriterException

embedDataBits

static void embedDataBits(BitArray dataBits,
                          int maskPattern,
                          ByteMatrix matrix)
                   throws WriterException

Embed data bits into matrix

Throws:: WriterException

embedTypeInfo

static void embedTypeInfo(ErrorCorrectionLevel ecLevel,
                          int maskPattern,
                          ByteMatrix matrix)
                   throws WriterException

Embed type information

Throws:: WriterException

findMSBSet
```
static int findMSBSet(int value)
```
Parameters:
value - input value

makeTypeInfoBits

static void makeTypeInfoBits(ErrorCorrectionLevel ecLevel,
                             int maskPattern,
                             BitArray bits)
                      throws WriterException

Make type information bit vector

Throws:: WriterException

makeVersionInfoBits

static void makeVersionInfoBits(Version version,
                                BitArray bits)
                         throws WriterException

Make version information bit vector

Throws:: WriterException

maybeEmbedVersionInfo

static void maybeEmbedVersionInfo(Version version,
                                  ByteMatrix matrix)
                           throws WriterException

Embed version info if version >= 7

Throws:: WriterException

Class MatrixUtil