public BarcodeSearchDirection SearchDirection { get; set; }
@property (nonatomic, assign) LTBarcodeSearchDirection searchDirection;
public BarcodeSearchDirection getSearchDirection()
public void setSearchDirection(BarcodeSearchDirection value)
public:
property BarcodeSearchDirection SearchDirection {
BarcodeSearchDirection get();
void set ( BarcodeSearchDirection );
}
SearchDirection # get and set (PatchCodeBarcodeReadOptions)
A BarcodeSearchDirection enumeration member that indicates the direction to use when searching for barcodes. The default value is BarcodeSearchDirection.Horizontal.
The BarcodeReader class can search for barcodes in the image horizontally or vertically. By default, the reader will only search for barcodes in horizontal mode for performance reasons. Alter this by changing the appropriate read barcode options to specify vertical or both (horizontal and vertical) search direction.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Barcode;
using Leadtools.ImageProcessing;
public void PatchCodeBarcode_Example()
{
string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyPatchCodeBarcode.tif");
BarcodeEngine engine = new BarcodeEngine();
// Create the image to write the barcodes to
int resolution = 300;
using (RasterImage image = RasterImage.Create((int)(8.5 * resolution), (int)(11.0 * resolution), 1, resolution, RasterColor.FromKnownColor(RasterKnownColor.White)))
{
// Write two PatchCode barcodes
WriteBarcode(engine.Writer, image, "1100");
// Save the image
using (RasterCodecs codecs = new RasterCodecs())
{
codecs.Save(image, imageFileName, RasterImageFormat.CcittGroup4, 1);
}
}
// Now read the barcodes again
using (RasterCodecs codecs = new RasterCodecs())
{
using (RasterImage image = codecs.Load(imageFileName))
{
// Read the PatchCode barcode
ReadBarcode(engine.Reader, image);
}
}
}
private void WriteBarcode(BarcodeWriter writer, RasterImage image, string value)
{
// Create the barcode data
BarcodeData barcode = new BarcodeData(BarcodeSymbology.PatchCode, value);
// Set the write options
PatchCodeBarcodeWriteOptions options = new PatchCodeBarcodeWriteOptions();
// Use X Module when writing the barcode
options.UseXModule = true;
options.XModule = 30;
// Usually PatchCodes are centered in the middle of the page and take the whole height
// Calculate its size
writer.CalculateBarcodeDataBounds(new LeadRect(0, 0, image.ImageWidth, image.ImageHeight), image.XResolution, image.YResolution, barcode, options);
// Position it
LeadRect pixels = barcode.Bounds;
pixels.X = (image.ImageWidth - pixels.Width) / 2;
pixels.Y = 0;
pixels.Height = image.ImageHeight;
barcode.Bounds = new LeadRect();
// Write it
Console.WriteLine("Writing barcode with Data: {0}", value);
writer.WriteBarcode(image, barcode, options);
}
private void ReadBarcode(BarcodeReader reader, RasterImage image)
{
// Setup read options
PatchCodeBarcodeReadOptions options = new PatchCodeBarcodeReadOptions();
options.SearchDirection = BarcodeSearchDirection.Horizontal;
options.Granularity = 9;
Console.WriteLine("Reading PatchCode barcode");
BarcodeData barcode = reader.ReadBarcode(image, LeadRect.Empty, BarcodeSymbology.PatchCode, options);
if (barcode != null)
{
Console.WriteLine(" At {0}, data: {1}", barcode.Bounds, barcode.Value);
}
else
{
Console.WriteLine(" Not found");
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
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