/*
 * 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.
 */

#ifndef __FREESTYLE_NATURE_H__
#define __FREESTYLE_NATURE_H__

/** \file
 * \ingroup freestyle
 * \brief Different natures for both vertices and edges
 */

namespace Freestyle {

/*! Namespace gathering the different possible natures of 0D and 1D elements of the ViewMap */
namespace Nature {

/* XXX Why not using enums??? */
/* In order to optimize for space (enum is int) - T.K. */

typedef unsigned short VertexNature;
/*! true for any 0D element */
static const VertexNature POINT = 0;  // 0
/*! true for SVertex */
static const VertexNature S_VERTEX = (1 << 0);  // 1
/*! true for ViewVertex */
static const VertexNature VIEW_VERTEX = (1 << 1);  // 2
/*! true for NonTVertex */
static const VertexNature NON_T_VERTEX = (1 << 2);  // 4
/*! true for TVertex */
static const VertexNature T_VERTEX = (1 << 3);  // 8
/*! true for CUSP */
static const VertexNature CUSP = (1 << 4);  // 16

typedef unsigned short EdgeNature;
/*! true for non feature edges (always false for 1D elements of the ViewMap) */
static const EdgeNature NO_FEATURE = 0;  // 0
/*! true for silhouettes */
static const EdgeNature SILHOUETTE = (1 << 0);  // 1
/*! true for borders */
static const EdgeNature BORDER = (1 << 1);  // 2
/*! true for creases */
static const EdgeNature CREASE = (1 << 2);  // 4
/*! true for ridges */
static const EdgeNature RIDGE = (1 << 3);  // 8
/*! true for valleys */
static const EdgeNature VALLEY = (1 << 4);  // 16
/*! true for suggestive contours */
static const EdgeNature SUGGESTIVE_CONTOUR = (1 << 5);  // 32
/*! true for material boundaries */
static const EdgeNature MATERIAL_BOUNDARY = (1 << 6);  // 64
/*! true for user-defined edge marks */
static const EdgeNature EDGE_MARK = (1 << 7);  // 128

}  // end of namespace Nature

} /* namespace Freestyle */

#endif  // __FREESTYLE_NATURE_H__
