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- /* Copyright (C) 1989, 1990 Aladdin Enterprises. All rights reserved.
- Distributed by Free Software Foundation, Inc.
-
- This file is part of Ghostscript.
-
- Ghostscript is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
- to anyone for the consequences of using it or for whether it serves any
- particular purpose or works at all, unless he says so in writing. Refer
- to the Ghostscript General Public License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- Ghostscript, but only under the conditions described in the Ghostscript
- General Public License. A copy of this license is supposed to have been
- given to you along with Ghostscript so you can know your rights and
- responsibilities. It should be in a file named COPYING. Among other
- things, the copyright notice and this notice must be preserved on all
- copies. */
-
- /* gxpath.h */
- /* Lower-level path routines for GhostScript library */
- /* Requires gxfixed.h */
-
- /* The routines and types in this interface all use */
- /* device, rather than user, coordinates, and almost all */
- /* use fixed-point, rather than floating, representation. */
-
- /* Opaque type for a path */
- typedef struct gx_path_s gx_path;
- #ifndef ARC
- /* The Archimedes linker will look for this, and it doesn't exist */
- extern const uint gs_path_sizeof;
- #endif
-
- /* Opaque type for a path enumerator */
- typedef struct gx_path_enum_s gx_path_enum;
- #ifndef ARC
- /* The Archimedes linker will look for this, and it doesn't exist */
- extern const uint gx_path_enum_sizeof;
- #endif
-
- /* Define the two insideness rules */
- #define gx_rule_winding_number (-1)
- #define gx_rule_even_odd 1
-
- /* Path constructors. Note that the only procedure that involves */
- /* a graphics state is gx_path_init. */
- extern void gx_path_init(P2(gx_path *, gs_memory_procs *)),
- gx_path_release(P1(gx_path *)),
- gx_path_share(P1(gx_path *));
- extern int gx_path_add_point(P3(gx_path *, fixed, fixed)),
- gx_path_add_relative_point(P3(gx_path *, fixed, fixed)),
- gx_path_add_line(P3(gx_path *, fixed, fixed)),
- gx_path_add_rectangle(P5(gx_path *, fixed, fixed, fixed, fixed)),
- gx_path_add_pgram(P7(gx_path *, fixed, fixed, fixed, fixed, fixed, fixed)),
- gx_path_add_curve(P7(gx_path *, fixed, fixed, fixed, fixed, fixed, fixed)),
- gx_path_add_arc(P7(gx_path *, fixed, fixed, fixed, fixed, fixed, fixed)),
- gx_path_close_subpath(P1(gx_path *));
-
- /* Path accessors and transformers */
- extern int gx_path_current_point(P2(gx_path *, gs_fixed_point *)),
- gx_path_bbox(P2(gx_path *, gs_fixed_rect *)),
- gx_path_has_curves(P1(gx_path *)),
- gx_path_is_void(P1(gx_path *)),
- gx_path_is_rectangle(P2(gx_path *, gs_fixed_rect *)),
- gx_cpath_box_for_check(P2(gx_path *, gs_fixed_rect *)),
- gx_cpath_includes_rectangle(P5(gx_path *, fixed, fixed, fixed, fixed)),
- gx_path_copy(P2(gx_path * /*old*/, gx_path * /*to*/)),
- gx_path_flatten(P3(gx_path * /*old*/, gx_path * /*new*/, floatp)),
- gx_path_merge(P2(gx_path * /*from*/, gx_path * /*to*/)),
- gx_path_translate(P3(gx_path *, fixed, fixed));
-
- /* Debugging routines */
- #ifdef DEBUG
- extern void gx_path_print(P1(gx_path *));
- #endif
-