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- /* Copyright (C) 1989, 1995, 1996, 1997, 1998, 1999 Aladdin Enterprises. All rights reserved.
-
- This file is part of AFPL Ghostscript.
-
- AFPL 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 Free Public License (the
- "License") for full details.
-
- Every copy of AFPL 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 AFPL 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.
- */
-
- /*$Id: gspath.h,v 1.2 2000/09/19 19:00:31 lpd Exp $ */
- /* Graphics state path procedures */
- /* Requires gsstate.h */
-
- #ifndef gspath_INCLUDED
- # define gspath_INCLUDED
-
- #include "gspenum.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)),
- /*
- * Because of an obscure bug in the IBM RS/6000 compiler, one (but not
- * both) bool argument(s) for gs_arc_add must come before the floatp
- * arguments.
- */
- gs_arc_add(P8(gs_state *, bool, floatp, floatp, floatp, floatp, floatp, bool)),
- 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 *));
-
- /* Imager-level procedures */
- #ifndef gs_imager_state_DEFINED
- # define gs_imager_state_DEFINED
- typedef struct gs_imager_state_s gs_imager_state;
- #endif
- #ifndef gx_path_DEFINED
- # define gx_path_DEFINED
- typedef struct gx_path_s gx_path;
- #endif
- int gs_imager_arc_add(P9(gx_path * ppath, gs_imager_state * pis,
- bool clockwise, floatp axc, floatp ayc,
- floatp arad, floatp aang1, floatp aang2,
- bool add_line));
-
- #define gs_arc_add_inline(pgs, cw, axc, ayc, arad, aa1, aa2, add)\
- gs_imager_arc_add((pgs)->path, (gs_imager_state *)(pgs),\
- cw, axc, ayc, arad, aa1, aa2, add)
-
- /* 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(gs_state *, gs_point *)),
- gs_upathbbox(P3(gs_state *, gs_rect *, bool)),
- gs_dashpath(P1(gs_state *)),
- 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 conditionally makes a copy of the path. */
- gs_path_enum *
- gs_path_enum_alloc(P2(gs_memory_t *, client_name_t));
- int gs_path_enum_copy_init(P3(gs_path_enum *, const gs_state *, bool));
-
- #define gs_path_enum_init(penum, pgs)\
- gs_path_enum_copy_init(penum, pgs, true)
- 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 *));
-
- #endif /* gspath_INCLUDED */
-