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1 /*
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2 Copyright (c) Applied Psychology Unit, Medical Research Council. 1988, 1989
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3 ===========================================================================
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4
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5 Permission to use, copy, modify, and distribute this software without fee
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6 is hereby granted for research purposes, provided that this copyright
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7 notice appears in all copies and in all supporting documentation, and that
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8 the software is not redistributed for any fee (except for a nominal shipping
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9 charge). Anyone wanting to incorporate all or part of this software in a
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10 commercial product must obtain a license from the Medical Research Council.
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11
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12 The MRC makes no representations about the suitability of this
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13 software for any purpose. It is provided "as is" without express or implied
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14 warranty.
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15
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16 THE MRC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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17 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THE
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18 A.P.U. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
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19 DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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20 AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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21 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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22 */
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23
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24 /*
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25 grey.h
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26 ======
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27
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28 yet another include file for dither patterns and grey scales.
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29
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30 */
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31
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32
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33 extern int *DitherLine(), **Dithers() ;
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34 extern void FreeDithers() ;
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35
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36 extern struct _lookup *makeLookup() ;
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37 extern char *lookup() ;
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38 extern void doLookup() ;
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39 extern void freeLookup( /* struct _lookup lookup */ ) ;
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40
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41 struct _lookup { char *pixeltable, *output ; int **dithers ; } ;
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42
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43 #define Lookup( _col, _lookup, _input, _match, _height ) \
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44 lookup( _col, _lookup, _input, _match, _height )
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