BitMiracle.LibTiff.Classic.Tiff.SetField C# (CSharp) Method

Tiff Class Documentation Usage Examples Of BitMiracle.LibTiff.Classic.Tiff::SetField Show file Open project: Core-Techs/TiffLibrary

SetField() public method

Sets the value(s) of a tag in a TIFF file/stream open for writing.

SetField sets the value of a tag or pseudo-tag in the current directory associated with the open TIFF file/stream. To set the value of a field the file/stream must have been previously opened for writing with Open(string, string) or ClientOpen(string, string, object, BitMiracle.LibTiff.Classic.TiffStream); pseudo-tags can be set whether the file was opened for reading or writing. The tag is identified by tag. The type and number of values in value is dependent on the tag being set. You may want to consult "Well-known tags and their value(s) data types" to become familiar with exact data types and calling conventions required for each tag supported by the library.

A pseudo-tag is a parameter that is used to control the operation of the library but whose value is not read or written to the underlying file.

The field will be written to the file when/if the directory structure is updated.

public SetField ( TiffTag tag ) : bool
tag	TiffTag	The tag.
return	bool

        public bool SetField(TiffTag tag, params object[] value)
        {
            if (okToChangeTag(tag))
                return m_tagmethods.SetField(this, tag, FieldValue.FromParams(value));

            return false;
        }

Usage Example

Example #1

Show file

File: TiffGrid.cs Project: JacobGudbjerg/hydronumerics

    public TiffGrid(string filename, string NewFileName)
    {
      ValuesToWrite = new Dictionary<int, Dictionary<int, double>>();

      tiff_org = BitMiracle.LibTiff.Classic.Tiff.Open(Path.GetFullPath(filename), "r");

      tiff = BitMiracle.LibTiff.Classic.Tiff.Open(Path.GetFullPath(NewFileName), "w");
      foreach (TiffTag enu in Enum.GetValues(typeof(TiffTag)))
      {
        var val = tiff_org.GetField(enu);
        if (val != null & enu != TiffTag.EXTRASAMPLES)
          tiff.SetField(enu, val[0]);
      }

      for (int i = 0; i < tiff_org.GetTagListCount(); i++)
      {
        int k = tiff_org.GetTagListEntry(i);
        var ff = tiff_org.FindFieldInfo((TiffTag)k, TiffType.ANY);
        tiff.MergeFieldInfo(new TiffFieldInfo[] { ff }, 1);
        var val = tiff_org.GetField((TiffTag)tiff_org.GetTagListEntry(i));
        tiff.SetField((TiffTag)k, val[0], val[1]);
      }

      var val2 = tiff_org.GetField((TiffTag)33922)[1].ToDoubleArray();
      XOrigin = val2[3];
      YOrigin = val2[4]; //Upper basegrid assumes Lower
      val2 = tiff_org.GetField((TiffTag)33550)[1].ToDoubleArray();
      GridSize = val2[0];
      GridSize = val2[1];
      NumberOfColumns = tiff_org.GetField(TiffTag.IMAGEWIDTH)[0].ToInt();
      NumberOfRows = tiff_org.GetField(TiffTag.IMAGELENGTH)[0].ToInt();

      //Shift YOrigin to lower left
      YOrigin -= GridSize * NumberOfRows;
      scanline = new byte[tiff_org.ScanlineSize()];
      bits = scanline.Count() / NumberOfColumns;
      ScanLineCache = new Dictionary<int, byte[]>();




    }

All Usage Examples Of BitMiracle.LibTiff.Classic.Tiff::SetField

Tiff

BITn

ByteArrayToInts

ByteArrayToShorts

CheckTile

CheckpointDirectory

ClientOpen

Clientdata

Compare

ComputeStrip

ComputeTile