1 /* Copyright (C) 2002 artofcode LLC. All rights reserved. 2 3 This software is provided AS-IS with no warranty, either express or 4 implied. 5 6 This software is distributed under license and may not be copied, 7 modified or distributed except as expressly authorized under the terms 8 of the license contained in the file LICENSE in this distribution. 9 10 For more information about licensing, please refer to 11 http://www.ghostscript.com/licensing/. For information on 12 commercial licensing, go to http://www.artifex.com/licensing/ or 13 contact Artifex Software, Inc., 101 Lucas Valley Road #110, 14 San Rafael, CA 94903, U.S.A., +1(415)492-9861. 15 */ 16 /*$Id: gswts.h,v 1.2 2002/11/02 07:31:45 raph Exp $ */ 17 #ifndef gswts_INCLUDED 18 # define gswts_INCLUDED 19 20 #ifndef gs_wts_screen_enum_t_DEFINED 21 # define gs_wts_screen_enum_t_DEFINED 22 typedef struct gs_wts_screen_enum_s gs_wts_screen_enum_t; 23 #endif 24 25 typedef struct gx_wts_cell_params_s gx_wts_cell_params_t; 26 27 /* Note: this corresponds roughly to the SP structure in the WTS code. */ 28 struct gx_wts_cell_params_s { 29 wts_screen_type t; 30 int width; 31 int height; 32 double ufast; 33 double vfast; 34 double uslow; 35 double vslow; 36 }; 37 38 gx_wts_cell_params_t * 39 wts_pick_cell_size(gs_screen_halftone *ph, const gs_matrix *pmat); 40 41 gs_wts_screen_enum_t * 42 gs_wts_screen_enum_new(gx_wts_cell_params_t *wcp); 43 44 int 45 gs_wts_screen_enum_currentpoint(gs_wts_screen_enum_t *wse, gs_point *ppt); 46 47 int 48 gs_wts_screen_enum_next(gs_wts_screen_enum_t *wse, floatp value); 49 50 int 51 wts_sort_blue(gs_wts_screen_enum_t *wse); 52 53 int 54 wts_sort_cell(gs_wts_screen_enum_t *wse); 55 56 wts_screen_t * 57 wts_screen_from_enum(const gs_wts_screen_enum_t *wse); 58 59 void 60 gs_wts_free_enum(gs_wts_screen_enum_t *wse); 61 62 void 63 gs_wts_free_screen(wts_screen_t *wts); 64 65 #endif 66 67 68 69