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/* Copyright (C) 2002 artofcode LLC. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/*$Id: gxwts.h,v 1.2 2002/11/02 07:31:45 raph Exp $ */
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#ifndef gxwts_INCLUDED
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# define gxwts_INCLUDED
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typedef bits16 wts_screen_sample_t;
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#ifndef wts_screen_t_DEFINED
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# define wts_screen_t_DEFINED
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typedef struct wts_screen_s wts_screen_t;
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#endif
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typedef enum {
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WTS_SCREEN_RAT,
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WTS_SCREEN_J,
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WTS_SCREEN_H
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} wts_screen_type;
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struct wts_screen_s {
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wts_screen_type type;
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int cell_width;
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int cell_height;
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int cell_shift;
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wts_screen_sample_t *samples;
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};
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typedef struct {
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wts_screen_t base;
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/* Probabilities of "jumps". A and B jumps can happen when moving
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one pixel to the right. C and D can happen when moving one pixel
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down. */
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int pa; /* change to double? */
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int pb;
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int pc;
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int pd;
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int XA;
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int YA;
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int XB;
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int YB;
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int XC;
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int YC;
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int XD;
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int YD;
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} wts_screen_j_t;
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typedef struct {
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wts_screen_t base;
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/* This is the exact value that x1 and (width-x1) approximates. */
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double px;
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/* Ditto y1 and (height-y1). */
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double py;
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int x1;
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int y1;
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} wts_screen_h_t;
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int
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wts_get_samples(const wts_screen_t *ws, int x, int y,
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wts_screen_sample_t **samples, int *p_nsamples);
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#endif
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