/// <summary>
/// Gets an enumeration of <see cref="VoiWindow"/>s defined in the specified data source.
/// </summary>
/// <param name="dataset">A DICOM data source.</param>
/// <returns>An enumeration of <see cref="VoiWindow"/>s.</returns>
public static IEnumerable <VoiWindow> GetWindows(IDicomAttributeProvider dataset)
{
string windowCenterValues = dataset[DicomTags.WindowCenter].ToString();
if (string.IsNullOrEmpty(windowCenterValues))
{
yield break;
}
string windowWidthValues = dataset[DicomTags.WindowWidth].ToString();
if (string.IsNullOrEmpty(windowWidthValues))
{
yield break;
}
string windowExplanationValues = dataset[DicomTags.WindowCenterWidthExplanation].ToString();
double[] windowCenters;
DicomStringHelper.TryGetDoubleArray(windowCenterValues, out windowCenters);
double[] windowWidths;
DicomStringHelper.TryGetDoubleArray(windowWidthValues, out windowWidths);
string[] windowExplanations = DicomStringHelper.GetStringArray(windowExplanationValues);
foreach (VoiWindow window in GetWindows(windowCenters, windowWidths, windowExplanations))
{
yield return(window);
}
}
/// <summary>
/// Creates an <see cref="ImagePositionPatient"/> object from a dicom multi-valued string.
/// </summary>
/// <returns>
/// Null if there are not exactly 3 parsed values in the input string.
/// </returns>
public static ImagePositionPatient FromString(string multiValuedString)
{
double[] values;
if (DicomStringHelper.TryGetDoubleArray(multiValuedString, out values) && values.Length == 3)
{
return(new ImagePositionPatient(values[0], values[1], values[2]));
}
return(null);
}
public static PixelSpacing FromString(string multiValuedString)
{
double[] values;
if (DicomStringHelper.TryGetDoubleArray(multiValuedString, out values) && values.Length == 2)
{
return(new PixelSpacing(values[0], values[1]));
}
return(null);
}
/// <summary>
/// Parses a <see cref="PixelSpacing"/> from a DICOM multi-valued string.
/// </summary>
/// <param name="multiValuedString">Pixel spacing, defined in row spacing and column spacing, separated by a backslash.</param>
/// <returns>
/// NULL if there are not exactly 2 parsed values in the input string.
/// </returns>
public static PixelSpacing FromString(string multiValuedString)
{
if (string.IsNullOrEmpty(multiValuedString))
{
return(null);
}
double[] values;
return(DicomStringHelper.TryGetDoubleArray(multiValuedString, out values) && values.Length == 2 ? new PixelSpacing(values[0], values[1]) : null);
}
/// <summary>
/// Returns a delegate that will get the value of <paramref name="dicomTag"/> (all positions),
/// from an <see cref="ImageSop"/> as an array of <see cref="double"/>s.
/// </summary>
public static FrameDataRetrieverDelegate<double[]> GetDoubleArrayRetriever(uint dicomTag)
{
return delegate(Frame frame)
{
string value;
value = frame[dicomTag].ToString();
double[] values;
if (!DicomStringHelper.TryGetDoubleArray(value ?? "", out values))
values = new double[] { };
return values;
};
}
/// <summary>
/// Creates an <see cref="ImageOrientationPatient"/> object from a DICOM multi-valued string.
/// </summary>
/// <param name="multiValuedString">A DICOM multi-valued string containing the 6 components of the row and column cosine vectors.</param>
/// <returns>
/// Returns NULL if there are not exactly six parseable values in the input string.
/// </returns>
public static ImageOrientationPatient FromString(string multiValuedString)
{
if (string.IsNullOrEmpty(multiValuedString))
{
return(null);
}
double[] values;
if (DicomStringHelper.TryGetDoubleArray(multiValuedString, out values) && values.Length == 6)
{
return(new ImageOrientationPatient(values[0], values[1], values[2], values[3], values[4], values[5]));
}
return(null);
}
/// <summary>
/// Parses a <see cref="GradientDirection"/> from a DICOM multi-valued string.
/// </summary>
/// <param name="multiValuedString">Gradient direction, defined as X Y and Z, separated by a backslash.</param>
/// <returns>
/// NULL if there are not exactly 2 parsed values in the input string.
/// </returns>
public static GradientDirection FromString(string multiValuedString)
{
if (string.IsNullOrEmpty(multiValuedString))
{
return(null);
}
double[] values;
if (DicomStringHelper.TryGetDoubleArray(multiValuedString, out values) && values.Length == 3)
{
new GradientDirection(values[0], values[1], values[2]);
}
return(null);
}
public void TestDoubleArrayConverter()
{
string input = null;
double[] output;
DicomStringHelper.TryGetDoubleArray(input, out output);
Assert.AreEqual(output.Length, 0);
input = "";
DicomStringHelper.TryGetDoubleArray(input, out output);
Assert.AreEqual(output.Length, 0);
input = @"0\1.2\2.3";
DicomStringHelper.TryGetDoubleArray(input, out output);
Assert.AreEqual(output[0], 0);
Assert.AreEqual(output[1], 1.2);
Assert.AreEqual(output[2], 2.3);
}