Nature.h

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/*
 * 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.
 */
 
#pragma once
 
namespace Freestyle {
 
namespace Nature {
 
/* XXX Why not using enums??? */
/* In order to optimize for space (enum is int) - T.K. */
 
typedef unsigned short VertexNature;
static const VertexNature POINT = 0;  // 0
static const VertexNature S_VERTEX = (1 << 0);  // 1
static const VertexNature VIEW_VERTEX = (1 << 1);  // 2
static const VertexNature NON_T_VERTEX = (1 << 2);  // 4
static const VertexNature T_VERTEX = (1 << 3);  // 8
static const VertexNature CUSP = (1 << 4);  // 16
 
typedef unsigned short EdgeNature;
static const EdgeNature NO_FEATURE = 0;  // 0
static const EdgeNature SILHOUETTE = (1 << 0);  // 1
static const EdgeNature BORDER = (1 << 1);  // 2
static const EdgeNature CREASE = (1 << 2);  // 4
static const EdgeNature RIDGE = (1 << 3);  // 8
static const EdgeNature VALLEY = (1 << 4);  // 16
static const EdgeNature SUGGESTIVE_CONTOUR = (1 << 5);  // 32
static const EdgeNature MATERIAL_BOUNDARY = (1 << 6);  // 64
static const EdgeNature EDGE_MARK = (1 << 7);  // 128
 
}  // end of namespace Nature
 
} /* namespace Freestyle */