/*
 * 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) 2019 by Blender Foundation.
 * All rights reserved.
 */

/** \file
 * \ingroup bke
 */

#pragma once

#include "BLI_sys_types.h"

#ifdef __cplusplus
extern "C" {
#endif

struct Mesh;
struct Subdiv;

/* Special version of subdivision surface which calculates final positions for coarse vertices.
 * Effectively is pushing the coarse positions to the limit surface.
 *
 * One of the usage examples is calculation of crazy space of subdivision modifier, allowing to
 * paint on a deformed mesh with sub-surf on it.
 *
 * vertex_cos are supposed to hold coordinates of the coarse mesh. */
void BKE_subdiv_deform_coarse_vertices(struct Subdiv *subdiv,
                                       const struct Mesh *coarse_mesh,
                                       float (*vertex_cos)[3],
                                       int num_verts);

#ifdef __cplusplus
}
#endif