BarcodeSearchDirection Enumeration (original) (raw)
Summary
Search direction to use when reading barcodes.
Syntax
C#
Objective-C
C++/CLI
Java
Python
[SerializableAttribute()]
public enum BarcodeSearchDirection
typedef NS_ENUM(NSInteger, LTBarcodeSearchDirection) {
LTBarcodeSearchDirectionHorizontal,
LTBarcodeSearchDirectionVertical,
LTBarcodeSearchDirectionHorizontalAndVertical
};
public enum BarcodeSearchDirection [SerializableAttribute()]
public enum class BarcodeSearchDirection
class BarcodeSearchDirection(Enum):
Horizontal = 0
Vertical = 1
HorizontalAndVertical = 2
Members
| Value | Member | Description |
|---|---|---|
| 0 | Horizontal | Search for barcodes horizontally. This is the default behavior. |
| 1 | Vertical | Search for barcodes vertically. |
| 2 | HorizontalAndVertical | Search for barcodes horizontally and then vertically. |
Example
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Barcode;
using Leadtools.ImageProcessing;
public void BarcodeReadOptions_Example()
{
string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "Barcode1.tif");
// Create a Barcode engine
BarcodeEngine engine = new BarcodeEngine();
// Get the Barcode reader instance
BarcodeReader reader = engine.Reader;
// Load the image
using (RasterCodecs codecs = new RasterCodecs())
{
using (RasterImage image = codecs.Load(imageFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1))
{
// Rotate the image by 90, so default option of reading horizontal barcodes will not work
Console.WriteLine("Rotating the image by 90 degrees");
RotateCommand rotate = new RotateCommand(90 * 100, RotateCommandFlags.Resize, RasterColor.FromKnownColor(RasterKnownColor.White));
rotate.Run(image);
// Read all the barcodes from the image using default options
Console.WriteLine("Reading barcodes using default options");
BarcodeData[] barcodes = reader.ReadBarcodes(image, LeadRect.Empty, 0, null, null);
// Show the number of barcodes found, should be 0 since default search direction is horizontal
Console.WriteLine("Found {0} barcodes", barcodes.Length);
// Now create options to read barcodes horizontally and vertically
BarcodeReadOptions[] options = GetHorizontalAndVerticalReadBarcodeOptions(reader);
// Check digit mode types
BarcodeReturnCheckDigit[] digits = (BarcodeReturnCheckDigit[])Enum.GetValues(typeof(BarcodeReturnCheckDigit));
foreach(var digit in digits)
{
Console.WriteLine($"Check digit modes: {digit}");
}
// Read again
Console.WriteLine("Reading barcodes using new options");
barcodes = reader.ReadBarcodes(image, LeadRect.Empty, 0, null, options);
// Show the number of barcodes found, should all be read now
Console.WriteLine("Found {0} barcodes", barcodes.Length);
}
}
}
private static BarcodeReadOptions[] GetHorizontalAndVerticalReadBarcodeOptions(BarcodeReader reader)
{
// By default, the options read horizontal barcodes only, create an array of options capable of reading vertical barcodes
// Notice, we cloned the default options in reader so we will not change the original options
OneDBarcodeReadOptions oneDReadOptions = reader.GetDefaultOptions(BarcodeSymbology.UPCA).Clone() as OneDBarcodeReadOptions;
oneDReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical;
FourStateBarcodeReadOptions fourStateReadOptions = reader.GetDefaultOptions(BarcodeSymbology.USPS4State).Clone() as FourStateBarcodeReadOptions;
fourStateReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical;
PostNetPlanetBarcodeReadOptions postNetPlanetReadOptions = reader.GetDefaultOptions(BarcodeSymbology.PostNet).Clone() as PostNetPlanetBarcodeReadOptions;
postNetPlanetReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical;
GS1DatabarStackedBarcodeReadOptions gs1StackedReadOptions = reader.GetDefaultOptions(BarcodeSymbology.GS1DatabarStacked).Clone() as GS1DatabarStackedBarcodeReadOptions;
gs1StackedReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical;
PatchCodeBarcodeReadOptions patchCodeReadOptions = reader.GetDefaultOptions(BarcodeSymbology.PatchCode).Clone() as PatchCodeBarcodeReadOptions;
patchCodeReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical;
PDF417BarcodeReadOptions pdf417ReadOptions = reader.GetDefaultOptions(BarcodeSymbology.PDF417).Clone() as PDF417BarcodeReadOptions;
pdf417ReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical;
MicroPDF417BarcodeReadOptions microPdf417ReadOptions = reader.GetDefaultOptions(BarcodeSymbology.MicroPDF417).Clone() as MicroPDF417BarcodeReadOptions;
microPdf417ReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical;
PharmaCodeBarcodeReadOptions pharmaCodeBarcodeReadOptions = reader.GetDefaultOptions(BarcodeSymbology.PharmaCode).Clone()as PharmaCodeBarcodeReadOptions;
pharmaCodeBarcodeReadOptions.SearchDirection= BarcodeSearchDirection.HorizontalAndVertical;
// Even though this array will not contain all options, it should be enough to read all barcodes, since the version of ReadBarcodes we will use
// will use the default options if an override is not passed
BarcodeReadOptions[] readOptions =
{
oneDReadOptions, fourStateReadOptions, postNetPlanetReadOptions, gs1StackedReadOptions, patchCodeReadOptions, pdf417ReadOptions, microPdf417ReadOptions, pharmaCodeBarcodeReadOptions
};
return readOptions;
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}