ttile_t TIFFComputeTile	(	TIFF *	tif,
		uint32	x,
		uint32	y,
		uint32	z,
		tsample_t	s
	)

Definition at line 68 of file tif_tile.c.

Referenced by TIFFReadTile(), and TIFFWriteTile().

{
    TIFFDirectory *td = &tif->tif_dir;
    uint32 dx = td->td_tilewidth;
    uint32 dy = td->td_tilelength;
    uint32 dz = td->td_tiledepth;
    ttile_t tile = 1;

    if (td->td_imagedepth == 1)
        z = 0;
    if (dx == (uint32) -1)
        dx = td->td_imagewidth;
    if (dy == (uint32) -1)
        dy = td->td_imagelength;
    if (dz == (uint32) -1)
        dz = td->td_imagedepth;
    if (dx != 0 && dy != 0 && dz != 0) {
        uint32 xpt = TIFFhowmany(td->td_imagewidth, dx); 
        uint32 ypt = TIFFhowmany(td->td_imagelength, dy); 
        uint32 zpt = TIFFhowmany(td->td_imagedepth, dz); 

        if (td->td_planarconfig == PLANARCONFIG_SEPARATE) 
            tile = (xpt*ypt*zpt)*s +
                 (xpt*ypt)*(z/dz) +
                 xpt*(y/dy) +
                 x/dx;
        else
            tile = (xpt*ypt)*(z/dz) + xpt*(y/dy) + x/dx;
    }
    return (tile);
}

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