private void timer1_Tick(object sender, EventArgs e)
{
// Get the current time.
DateTime currentTime = DateTime.Now;
// After advancing to the next second, update the overlay.
if (currentTime.Subtract(lastTime).TotalSeconds >= 1)
{
lastTime = currentTime;
// Overlay the current time.
int secondsToNextImage = (int)nextTime.Subtract(currentTime).TotalSeconds;
OverlayTextOnImage(imageViewer1.Image, currentTime, secondsToNextImage);
// Is it time to load the next image?
if (secondsToNextImage < 0)
{
// The next image will load in 5 seconds.
nextTime = currentTime.AddSeconds(5);
// Get the next image.
LoadNextImage(imageViewer1.Image);
// Compute a random point to overlay the text.
textOrigin.Initialize(r.NextDouble() * (imageViewer1.Image.Width / 2.0),
r.NextDouble() * (imageViewer1.Image.Height / 2.0));
OverlayTextOnImage(imageViewer1.Image, currentTime, 4);
}
}
}
// timer1_Tick is called when the timer interval has passed. The next image
// is read in, barcode settings are initialized based on the type,
// and the barcode is read and processed.
private void timer1_Tick(object sender, EventArgs e)
{
// Stop the timer so that we don't count the time spent reading the barcode
timer1.Enabled = false;
using (VisionImage tempImage = new VisionImage()) {
// Load the barcode image.
tempImage.ReadVisionFile(curImages[imageIndex]);
Collection <Pdf417Report> pdf417Report = new Collection <Pdf417Report>();
DataMatrixReport dmReport = new DataMatrixReport();
QRReport qrReport = new QRReport();
// Read barcode and time how long it takes.
int startTime = System.Environment.TickCount;
if (barcodeType.Text == "PDF417")
{
// Decode a PDF417 code.
pdf417Report = Algorithms.ReadPdf417Barcode(tempImage);
}
else if (barcodeType.Text == "Data Matrix")
{
// Decode a Data Matrix
DataMatrixDescriptionOptions descOptions = new DataMatrixDescriptionOptions();
DataMatrixSizeOptions sizeOptions = new DataMatrixSizeOptions();
DataMatrixSearchOptions searchOptions = new DataMatrixSearchOptions();
if (useOptionsBox.Checked)
{
// Read the options from the image.
GetDataMatrixCodeSettings(tempImage, ref descOptions, ref sizeOptions, ref searchOptions);
}
DataMatrixGradingMode gradingMode = DataMatrixGradingMode.None;
if (gradeDMBox.Checked)
{
gradingMode = DataMatrixGradingMode.PrepareForAim;
}
dmReport = Algorithms.ReadDataMatrixBarcode(tempImage, null, gradingMode, descOptions, sizeOptions, searchOptions);
}
else
{
// Decode a QR Code
QRDescriptionOptions descOptions = new QRDescriptionOptions();
QRSizeOptions sizeOptions = new QRSizeOptions();
QRSearchOptions searchOptions = new QRSearchOptions();
if (useOptionsBox.Checked)
{
// Read the options from the image.
}
qrReport = Algorithms.ReadQRCode(tempImage, null, descOptions, sizeOptions, searchOptions);
}
int elapsedTime = System.Environment.TickCount - startTime;
bool found;
if (barcodeType.Text == "PDF417")
{
found = pdf417Report.Count > 0;
}
else if (barcodeType.Text == "Data Matrix")
{
found = dmReport.Found;
}
else
{
found = qrReport.Found;
}
// Process info
if (found)
{
PointContour centerPoint = new PointContour();
if (barcodeType.Text == "PDF417")
{
dataFound.Text = pdf417Report[0].StringData;
typeFound.Text = "Pdf417";
tempImage.Overlays.Default.AddPolygon(new PolygonContour(pdf417Report[0].Corners), Rgb32Value.GreenColor, DrawingMode.DrawValue);
// Center the viewer on the barcode.
centerPoint.Initialize((pdf417Report[0].Corners[0].X + pdf417Report[0].Corners[2].X) / 2, (pdf417Report[0].Corners[0].Y + pdf417Report[0].Corners[2].Y) / 2);
}
else if (barcodeType.Text == "Data Matrix")
{
if (dmReport.Binary)
{
dataFound.Text = System.Text.Encoding.Default.GetString(dmReport.GetBinaryData());
}
else
{
dataFound.Text = dmReport.StringData;
}
DisplayDataMatrixType(dmReport);
tempImage.Overlays.Default.AddPolygon(new PolygonContour(dmReport.Corners), Rgb32Value.GreenColor, DrawingMode.DrawValue);
// Center the viewer on the barcode.
centerPoint.Initialize((dmReport.Corners[0].X + dmReport.Corners[2].X) / 2, (dmReport.Corners[0].Y + dmReport.Corners[2].Y) / 2);
// Grade the barcode if requested.
if (gradeDMBox.Checked)
{
AimGradeReport gradeReport = Algorithms.GradeDataMatrixBarcodeAim(tempImage);
gradeOverall.Text = gradeReport.OverallGrade.ToString();
gradeDecoding.Text = gradeReport.DecodingGrade.ToString();
gradeSymbolContrast.Text = gradeReport.SymbolContrastGrade.ToString();
gradePrintGrowth.Text = gradeReport.PrintGrowthGrade.ToString();
gradeAxialNonuniformity.Text = gradeReport.AxialNonuniformityGrade.ToString();
gradeUnusedErrorCorrection.Text = gradeReport.UnusedErrorCorrectionGrade.ToString();
}
else
{
gradeOverall.Text = "";
gradeDecoding.Text = "";
gradeSymbolContrast.Text = "";
gradePrintGrowth.Text = "";
gradeAxialNonuniformity.Text = "";
gradeUnusedErrorCorrection.Text = "";
}
}
else
{
dataFound.Text = System.Text.Encoding.Default.GetString(qrReport.GetData());
DisplayQRType(qrReport);
tempImage.Overlays.Default.AddPolygon(new PolygonContour(qrReport.Corners), Rgb32Value.GreenColor, DrawingMode.DrawValue);
// Center the viewer on the barcode.
centerPoint.Initialize((qrReport.Corners[0].X + qrReport.Corners[2].X) / 2, (qrReport.Corners[0].Y + qrReport.Corners[2].Y) / 2);
}
readTime.Text = elapsedTime.ToString();
Algorithms.Copy(tempImage, imageViewer1.Image);
imageViewer1.RefreshImage();
imageViewer1.Center.Initialize(centerPoint.X, centerPoint.Y);
}
}
// Set up for next image
imageIndex = (imageIndex + 1) % curImages.Count;
timer1.Enabled = true;
}