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/* Copyright (C) 1989, 1995, 1996, 1997, 1998, 1999 Aladdin Enterprises. 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: gspath.h,v 1.7 2004/05/11 10:41:55 igor Exp $ */
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/* Graphics state path procedures */
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/* Requires gsstate.h */
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#ifndef gspath_INCLUDED
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# define gspath_INCLUDED
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#include "gspenum.h"
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/* Path constructors */
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int gs_newpath(gs_state *),
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gs_moveto(gs_state *, floatp, floatp),
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gs_rmoveto(gs_state *, floatp, floatp),
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gs_lineto(gs_state *, floatp, floatp),
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gs_rlineto(gs_state *, floatp, floatp),
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gs_arc(gs_state *, floatp, floatp, floatp, floatp, floatp),
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gs_arcn(gs_state *, floatp, floatp, floatp, floatp, floatp),
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/*
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* Because of an obscure bug in the IBM RS/6000 compiler, one (but not
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* both) bool argument(s) for gs_arc_add must come before the floatp
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* arguments.
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*/
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gs_arc_add(gs_state *, bool, floatp, floatp, floatp, floatp, floatp, bool),
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gs_arcto(gs_state *, floatp, floatp, floatp, floatp, floatp, float[4]),
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gs_curveto(gs_state *, floatp, floatp, floatp, floatp, floatp, floatp),
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gs_rcurveto(gs_state *, floatp, floatp, floatp, floatp, floatp, floatp),
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gs_closepath(gs_state *);
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#ifndef gs_imager_state_DEFINED
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# define gs_imager_state_DEFINED
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typedef struct gs_imager_state_s gs_imager_state;
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#endif
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#ifndef gx_path_DEFINED
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# define gx_path_DEFINED
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typedef struct gx_path_s gx_path;
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#endif
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#ifndef gs_matrix_fixed_DEFINED
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#define gs_matrix_fixed_DEFINED
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typedef struct gs_matrix_fixed_s gs_matrix_fixed;
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#endif
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/* Imager-level procedures */
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int gs_imager_arc_add(gx_path * ppath, gs_imager_state * pis,
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bool clockwise, floatp axc, floatp ayc,
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floatp arad, floatp aang1, floatp aang2,
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bool add_line);
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void make_quadrant_arc(gs_point *p, const gs_point *c,
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const gs_point *p0, const gs_point *p1, double r);
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/* Add the current path to the path in the previous graphics state. */
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int gs_upmergepath(gs_state *);
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/* Path accessors and transformers */
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int gs_currentpoint(gs_state *, gs_point *),
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gs_upathbbox(gs_state *, gs_rect *, bool),
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gs_dashpath(gs_state *),
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gs_flattenpath(gs_state *),
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gs_reversepath(gs_state *),
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gs_strokepath(gs_state *);
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/* The extra argument for gs_upathbbox controls whether to include */
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/* a trailing moveto in the bounding box. */
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#define gs_pathbbox(pgs, prect)\
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gs_upathbbox(pgs, prect, false)
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/* Path enumeration */
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/* This interface conditionally makes a copy of the path. */
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gs_path_enum *gs_path_enum_alloc(gs_memory_t *, client_name_t);
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int gs_path_enum_copy_init(gs_path_enum *, const gs_state *, bool);
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#define gs_path_enum_init(penum, pgs)\
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gs_path_enum_copy_init(penum, pgs, true)
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int gs_path_enum_next(gs_path_enum *, gs_point[3]); /* 0 when done */
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void gs_path_enum_cleanup(gs_path_enum *);
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/* Clipping */
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int gs_clippath(gs_state *),
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gs_initclip(gs_state *),
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gs_clip(gs_state *),
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gs_eoclip(gs_state *);
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#endif /* gspath_INCLUDED */
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