/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2004 Blender Foundation.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): Geoffrey Bantle.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#ifndef __BMESH_PRIVATE_H__
#define __BMESH_PRIVATE_H__

/** \file blender/bmesh/intern/bmesh_private.h
 *  \ingroup bmesh
 *
 *  Private function prototypes for bmesh public API.
 *  This file is a grab-bag of functions from various
 *  parts of the bmesh internals.
 */

/* returns positive nonzero on error */

#ifdef NDEBUG
   /* no error checking for release,
    * it can take most of the CPU time when running some tools */
#  define BM_CHECK_ELEMENT(el)  (void)(el)
#else
int bmesh_elem_check(void *element, const char htype);
#  define BM_CHECK_ELEMENT(el)                                                \
	if (bmesh_elem_check(el, ((BMHeader *)el)->htype)) {                      \
	    printf("check_element failure, with code %i on line %i in file\n"     \
	    "    \"%s\"\n\n",                                                     \
	    bmesh_elem_check(el, ((BMHeader *)el)->htype),                        \
	    __LINE__, __FILE__);                                                  \
	} (void)0
#endif

int bmesh_radial_length(const BMLoop *l);
int bmesh_disk_count_ex(const BMVert *v, const int count_max);
int bmesh_disk_count(const BMVert *v);

/**
 * Internal BMHeader.api_flag
 * \note Ensure different parts of the API do not conflict
 * on using these internal flags!*/
enum {
	_FLAG_JF       = (1 << 0),  /* join faces */
	_FLAG_MF       = (1 << 1),  /* make face */
	_FLAG_MV       = (1 << 1),  /* make face, vertex */
	_FLAG_OVERLAP  = (1 << 2),  /* general overlap flag  */
	_FLAG_WALK     = (1 << 3),  /* general walk flag (keep clean) */
	_FLAG_WALK_ALT = (1 << 4),  /* same as _FLAG_WALK, for when a second tag is needed */

	_FLAG_ELEM_CHECK = (1 << 7),  /* reserved for bmesh_elem_check */
};

#define BM_ELEM_API_FLAG_ENABLE(element, f)  { ((element)->head.api_flag |=  (f)); } (void)0
#define BM_ELEM_API_FLAG_DISABLE(element, f) { ((element)->head.api_flag &= (uchar)~(f)); } (void)0
#define BM_ELEM_API_FLAG_TEST(element, f)      ((element)->head.api_flag &   (f))
#define BM_ELEM_API_FLAG_CLEAR(element)      { ((element)->head.api_flag = 0); } (void)0

void poly_rotate_plane(const float normal[3], float (*verts)[3], unsigned const int nverts);

/* include the rest of our private declarations */
#include "bmesh_structure.h"

#endif /* __BMESH_PRIVATE_H__ */