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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.
*/
#ifndef __BKE_MESH_TANGENT_H__
#define __BKE_MESH_TANGENT_H__
/** \file BKE_mesh_tangent.h
* \ingroup bke
*/
void BKE_mesh_calc_loop_tangent_single_ex(
const struct MVert *mverts, const int numVerts, const struct MLoop *mloops,
float (*r_looptangent)[4], float (*loopnors)[3], const struct MLoopUV *loopuv,
const int numLoops, const struct MPoly *mpolys, const int numPolys,
struct ReportList *reports);
void BKE_mesh_calc_loop_tangent_single(
struct Mesh *mesh, const char *uvmap, float (*r_looptangents)[4], struct ReportList *reports);
void BKE_mesh_calc_loop_tangent_ex(
const struct MVert *mvert,
const struct MPoly *mpoly, const uint mpoly_len,
const struct MLoop *mloop,
const struct MLoopTri *looptri, const uint looptri_len,
struct CustomData *loopdata,
bool calc_active_tangent,
const char (*tangent_names)[64], int tangent_names_len,
const float (*poly_normals)[3],
const float (*loop_normals)[3],
const float (*vert_orco)[3],
/* result */
struct CustomData *loopdata_out,
const uint loopdata_out_len,
short *tangent_mask_curr_p);
void BKE_mesh_calc_loop_tangents(
struct Mesh *me_eval, bool calc_active_tangent,
const char (*tangent_names)[MAX_NAME], int tangent_names_len);
/* Helpers */
void BKE_mesh_add_loop_tangent_named_layer_for_uv(
struct CustomData *uv_data, struct CustomData *tan_data, int numLoopData,
const char *layer_name);
#define DM_TANGENT_MASK_ORCO (1 << 9)
void BKE_mesh_calc_loop_tangent_step_0(
const struct CustomData *loopData, bool calc_active_tangent,
const char (*tangent_names)[64], int tangent_names_count,
bool *rcalc_act, bool *rcalc_ren, int *ract_uv_n, int *rren_uv_n,
char *ract_uv_name, char *rren_uv_name, short *rtangent_mask);
#endif /* __BKE_MESH_TANGENT_H__ */
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