TIFFComputeTile(3T)MISC. REFERENCE MANUAL PAGETIFFComputeTile(3T)

NAME
     TIFFComputeTile, TIFFCheckTile,  TIFFNumberOfTiles  -  tile-
     related utility routines

SYNOPSIS
     #include <tiffio.h>
     ttile_t  TIFFComputeTile(TIFF*  tif,  uint32  x,  uint32  y,
     uint32 z, tsample_t sample)
     int TIFFCheckTile(TIFF* tif, uint32 x, uint32 y,  uint32  z,
     tsample_t sample)
     ttile_t TIFFNumberOfTiles(TIFF* tif)

DESCRIPTION
     TIFFComputeTile returns the tile that contains the specified
     coordinates.   A valid tile is always returned; out-of-range
     coordinate values are clamped to the bounds  of  the  image.
     The  x  and  y  parameters  are always used in calculating a
     tile.  The z parameter is used if the image is deeper than 1
     slice  (ImageDepth>1).  The sample parameter is used only if
     data are  organized  in  separate  planes  (PlanarConfigura-
     tion=2).

     TIFFCheckTile returns a non-zero value if the supplied coor-
     dinates  are  within the bounds of the image and zero other-
     wise.  The x parameter is checked against the value  of  the
     ImageWidth  tag.   The  y  parameter  is checked against the
     value of the ImageLength tag.  The z  parameter  is  checked
     against  the  value of the ImageDepth tag (if defined).  The
     sample parameter is checked against the value  of  the  Sam-
     plesPerPixel parameter if the data are organized in separate
     planes.

     TIFFNumberOfTiles returns the number of tiles in the image.

DIAGNOSTICS
     None.

SEE ALSO
     intro(3T),   TIFFReadEncodedTile(3T),   TIFFReadRawTile(3T),
     TIFFReadTile(3T),                  TIFFWriteEncodedTile(3T),
     TIFFWriteRawTile(3T), TIFFWriteTile(3T)

Sun Release 4.1  Last change: February 14, 1992                 1