/* Copyright (C) 1989, 1995 Aladdin Enterprises.  All rights reserved.
  
  This file is part of Aladdin Ghostscript.
  
  Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND.  No author
  or distributor accepts any responsibility for the consequences of using it,
  or for whether it serves any particular purpose or works at all, unless he
  or she says so in writing.  Refer to the Aladdin Ghostscript Free Public
  License (the "License") for full details.
  
  Every copy of Aladdin Ghostscript must include a copy of the License,
  normally in a plain ASCII text file named PUBLIC.  The License grants you
  the right to copy, modify and redistribute Aladdin Ghostscript, but only
  under certain conditions described in the License.  Among other things, the
  License requires that the copyright notice and this notice be preserved on
  all copies.
*/

/* gspath.h */
/* Client interface to path manipulation facilities */
/* Requires gsstate.h */

/* Path constructors */
int	gs_newpath(P1(gs_state *)),
	gs_moveto(P3(gs_state *, floatp, floatp)),
	gs_rmoveto(P3(gs_state *, floatp, floatp)),
	gs_lineto(P3(gs_state *, floatp, floatp)),
	gs_rlineto(P3(gs_state *, floatp, floatp)),
	gs_arc(P6(gs_state *, floatp, floatp, floatp, floatp, floatp)),
	gs_arcn(P6(gs_state *, floatp, floatp, floatp, floatp, floatp)),
	gs_arcto(P7(gs_state *, floatp, floatp, floatp, floatp, floatp, float [4])),
	gs_curveto(P7(gs_state *, floatp, floatp, floatp, floatp, floatp, floatp)),
	gs_rcurveto(P7(gs_state *, floatp, floatp, floatp, floatp, floatp, floatp)),
	gs_closepath(P1(gs_state *));

/* Add the current path to the path in the previous graphics state. */
int	gs_upmergepath(P1(gs_state *));

/* Path accessors and transformers */
int	gs_currentpoint(P2(const gs_state *, gs_point *)),
	gs_upathbbox(P3(gs_state *, gs_rect *, bool)),
	gs_flattenpath(P1(gs_state *)),
	gs_reversepath(P1(gs_state *)),
	gs_strokepath(P1(gs_state *));
/* The extra argument for gs_upathbbox controls whether to include */
/* a trailing moveto in the bounding box. */
#define gs_pathbbox(pgs, prect)\
  gs_upathbbox(pgs, prect, false)

/* Path enumeration */

/* This interface makes a copy of the path. */
#define gs_pe_moveto 1
#define gs_pe_lineto 2
#define gs_pe_curveto 3
#define gs_pe_closepath 4
typedef struct gs_path_enum_s gs_path_enum;
gs_path_enum *	gs_path_enum_alloc(P2(gs_memory_t *, client_name_t));
int	gs_path_enum_init(P2(gs_path_enum *, const gs_state *));
int	gs_path_enum_next(P2(gs_path_enum *, gs_point [3])); /* 0 when done */
void	gs_path_enum_cleanup(P1(gs_path_enum *));

/* Clipping */
int	gs_clippath(P1(gs_state *)),
	gs_initclip(P1(gs_state *)),
	gs_clip(P1(gs_state *)),
	gs_eoclip(P1(gs_state *));