| /* 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; |
| extern unsigned gs_path_sizeof; |
| |
| /* Opaque type for a path enumerator */ |
| typedef struct gx_path_enum_s gx_path_enum; |
| extern unsigned gx_path_enum_sizeof; |
| |
| /* 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_new_subpath(P1(gx_path *)), |
| 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(P2(FILE *, gx_path *)); |
| #endif |
