tomwalters@0: /*
tomwalters@0:     Copyright (c) Applied Psychology Unit, Medical Research Council. 1988, 1989
tomwalters@0:     ===========================================================================
tomwalters@0: 
tomwalters@0:     Permission to use, copy, modify, and distribute this software without fee 
tomwalters@0:     is hereby granted for research purposes, provided that this copyright 
tomwalters@0:     notice appears in all copies and in all supporting documentation, and that 
tomwalters@0:     the software is not redistributed for any fee (except for a nominal shipping 
tomwalters@0:     charge). Anyone wanting to incorporate all or part of this software in a
tomwalters@0:     commercial product must obtain a license from the Medical Research Council.
tomwalters@0: 
tomwalters@0:     The MRC makes no representations about the suitability of this 
tomwalters@0:     software for any purpose.  It is provided "as is" without express or implied 
tomwalters@0:     warranty.
tomwalters@0:  
tomwalters@0:     THE MRC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING 
tomwalters@0:     ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THE
tomwalters@0:     A.P.U. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY 
tomwalters@0:     DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 
tomwalters@0:     AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 
tomwalters@0:     OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
tomwalters@0: */
tomwalters@0: 
tomwalters@0: /*
tomwalters@0:     grey.h
tomwalters@0:     ======
tomwalters@0: 
tomwalters@0:     yet another include file for dither patterns and grey scales.
tomwalters@0: 
tomwalters@0: */
tomwalters@0: 
tomwalters@0: 
tomwalters@0: extern int *DitherLine(), **Dithers() ;
tomwalters@0: extern void FreeDithers() ;
tomwalters@0: 
tomwalters@0: extern struct _lookup *makeLookup() ;
tomwalters@0: extern char *lookup() ;
tomwalters@0: extern void doLookup() ;
tomwalters@0: extern void freeLookup( /* struct _lookup lookup */ ) ;
tomwalters@0: 
tomwalters@0: struct _lookup { char *pixeltable, *output ; int **dithers ; } ;
tomwalters@0: 
tomwalters@0: #define Lookup( _col, _lookup, _input, _match, _height ) \
tomwalters@0: 	lookup( _col, _lookup, _input, _match, _height )