TIFFComputeTile(3T)

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

SYNOPSIS
#include <tiffio.h>
u_int TIFFComputeTile(TIFF* tif, u_long x, u_long y, u_long z, u_int sample)
int TIFFCheckTile(TIFF* tif, u_long x, u_long y, u_long z, u_int sample)
u_int 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 (PlanarConfiguration=2).

TIFFCheckTile() returns a non-zero value if the supplied coordinates are within the bounds of the image and zero otherwise. 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 SamplesPerPixel 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)