Generate Aztec Code Barcodes
Overview
Aztec Code is a 2D barcode type that allows encoding alphanumeric characters and streams of bytes. Aztec Code barcodes are composed of square modules that create individual patterns in the center of a barcode image. These so-called bulls-eye signs facilitate barcode detection and scanning. This type supports Reed-Solomon error correction to assure data integrity and completeness. It benefits from high reading accuracy and data density.
The Aztec Code barcode type supports three subtypes:
- Full-Range Aztec Code - allows encoding up to 3,832 numerical or 3,067 alphanumeric symbols or 1,914 bytes
- Compact Aztec Code - allows encoding up to 110 numerical or 89 alphanumeric symbols or 53 bytes
- Aztec Rune - allows encoding values from 0 to 255 and is mainly used to label objects in Augmented Reality systems
Generation Modes
The preferred generation mode can be set using the AztecSymbolMode global property of class AztecParameters. The following modes are supported:
- Auto: identifies the most suitable Aztec Code type with the data capacity that is sufficient to encode data passed through the setCodeText method
- Compact: allows generating Compact Aztec Code barcodes with at most 4 layers and 27x27 modules
- FullRange: creates Full-Range Aztec Code barcodes with at most 32 layers and 151x151 modules
- Rune: generates Aztec Rune barcodes with at most 11x11 modules and can encode only numerical symbols from 0 to 255
Following Aztec Code barcode images have been generated through various generation modes.
| Generation Mode | Auto | Compact | Full-Range | Rune |
|---|---|---|---|---|
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let generator = new BarcodeGenerator(EncodeTypes.AZTEC);
generator.setCodeText("125");
generator.getParameters().getBarcode().getAztec().setAztecSymbolMode(AztecSymbolMode.AUTO);
generator.save("test.png", BarCodeImageFormat.PNG);
let generator = new BarcodeGenerator(EncodeTypes.AZTEC);
generator.setCodeText("125");
generator.getParameters().getBarcode().getAztec().setAztecSymbolMode(AztecSymbolMode.COMPACT);
generator.save("test.png", BarCodeImageFormat.PNG);
``` java
let generator = new BarcodeGenerator(EncodeTypes.AZTEC);
generator.setCodeText("125");
generator.getParameters().getBarcode().getAztec().setAztecSymbolMode(AztecSymbolMode.FULL_RANGE);
generator.save("test.png", BarCodeImageFormat.PNG);
``` java
let generator = new BarcodeGenerator(EncodeTypes.AZTEC);
generator.setCodeText("125");
generator.getParameters().getBarcode().getAztec().setAztecSymbolMode(AztecSymbolMode.RUNE);
generator.save("test.png", BarCodeImageFormat.PNG);
Encoding Byte Streams
In Aspose.BarCode for Node.js via Java, streams of bytes can be encoded as Aztec Code barcodes. To display the text label, it is required to call the setTwoDDisplayText method of class CodetextParameters.
Encoding Unicode Symbols
Unicode symbols can be encoded using the setCodeTextEncoding method of class AztecParameters. This method is applicable to all Aztec Code barcodes except Rune.
Error Correction Settings
Aztec Code barcodes include recovery information that can take from 5 to 95% of the entire encoded data stream. It is recommended to set this parameter to 23%. To select the required error correction level, it is necessary to use the setAztecErrorLevel method of class AztecParameters.
Following barcode images have been created using various error correction levels.
| Error Correction Level | Is Set to 5 | Is Set to 50 |
|---|---|---|
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Aspect Ratio Settings
Aspect Ratio is defined as the ratio between the barcode width and height. To modify proportions using the X and Y coordinates, the barcode library provides the setAspectRatio method of class AztecParameters. AspectRatio is determined as a relative coefficient to the value of XDimension. In general, it is recommended to set AspectRatio equal to 1. If the proportions of Aztec Code barcodes to be generated need to be adjusted, the setAspectRatio method can be used to do this.
Following barcodes have been generated with various values of the aspect ratio.
| Aspect Ratio | Is Set to 1 | Is Set to 0.5 |
|---|---|---|
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