public void GZipTest()
{
string hdr1 = Path.Combine("resources", "avg152T1_LR_nifti.hdr");
string hdr2 = Path.Combine("resources", "avg152T1_LR_nifti.hdr.gz");
Assert.IsFalse(NiftiFile.IsCompressed(hdr1));
Assert.IsTrue(NiftiFile.IsCompressed(hdr2));
string nii1 = Path.Combine("resources", "avg152T1_LR_nifti.nii");
string nii2 = Path.Combine("resources", "avg152T1_LR_nifti.nii.gz");
var nifti1 = NiftiFile.Read(nii1);
var nifti2 = NiftiFile.Read(nii2);
Assert.IsTrue(nifti1.Data.Length == nifti2.Data.Length);
Assert.IsTrue(nifti1.Data[100] == nifti2.Data[100]);
Assert.IsTrue(nifti1.Header.sizeof_hdr == nifti2.Header.sizeof_hdr);
Assert.IsTrue(nifti1.Header.slice_start == nifti2.Header.slice_start);
var tmp = "tmp.nii.gz";
NiftiFile.Write(nifti1, tmp, gzip: true);
Assert.IsTrue(File.Exists(tmp));
File.Delete(tmp);
}
public void ColorConversion()
{
var niiFile = Path.Combine("resources", "minimal.nii.gz");
var tmp = "color_pattern.nii";
var nifti = NiftiFile.Read(niiFile);
var colors = new Color[nifti.Data.Length];
for (int i = 0; i < colors.Length; ++i)
{
colors[i] = Color.FromArgb(i % 256, (i / 2) % 256, (i / 4) % 256);
}
nifti.Data = colors;
System.Console.WriteLine(nifti.Header.datatype);
System.Console.WriteLine(nifti.Header.data_type);
// Write color data
NiftiFile.Write(nifti, tmp);
var tmp2 = tmp + ".2.nii";
// Copy and check that size hasn't changed
NiftiFile.Write(NiftiFile.Read(tmp), tmp2);
Assert.AreEqual(new System.IO.FileInfo(tmp).Length, new System.IO.FileInfo(tmp2).Length);
// Remove these lines to check output files
File.Delete(tmp);
File.Delete(tmp2);
}
public void TestWriteNii()
{
var niiFile = Path.Combine("resources", "minimal.nii.gz");
var tmp = "tmp.nii";
var nifti = NiftiFile.Read(niiFile);
NiftiFile.Write(nifti, tmp);
var nifti2 = NiftiFile.Read(tmp);
Assert.IsTrue(nifti.Header.magic[2] == nifti2.Header.magic[2]);
Assert.IsTrue(nifti.Header.cal_max == nifti2.Header.cal_max);
File.Delete(tmp);
}
public void TestWriteHeader()
{
var niiFile = Path.Combine("resources", "minimal.nii.gz");
var tmp = "tmp.hdr";
var nifti = NiftiFile.Read(niiFile);
NiftiFile.Write(nifti.Header, tmp);
var niftiHdr = NiftiFile.ReadHeader(tmp);
// Maybe we could play with the bits at some point.
// At the moment this will fail.
//Assert.IsTrue(niftiHdr.magic[1] == 0x69);
//Assert.IsTrue(nifti.Header.magic[1] == 0X2B);
Assert.IsTrue(nifti.Header.cal_max == niftiHdr.cal_max);
File.Delete(tmp);
}
public void TestWriteHdrImg()
{
var niiFile = Path.Combine("resources", "minimal.nii.gz");
var tmp = "tmp.hdr";
var nifti = NiftiFile.Read(niiFile);
nifti.Header.magic[1] = 0x69;
NiftiFile.Write(nifti, tmp);
Assert.IsTrue(File.Exists(tmp));
Assert.IsTrue(File.Exists("tmp.img"));
var nifti2 = NiftiFile.Read(tmp);
Assert.IsTrue(nifti.Header.magic[2] == nifti2.Header.magic[2]);
Assert.IsTrue(nifti.Header.cal_max == nifti2.Header.cal_max);
File.Delete(tmp);
File.Delete("tmp.img");
}