1 files changed, 61 insertions, 0 deletions
diff --git a/source/blender/blenkernel/BKE_mesh_tangent.h b/source/blender/blenkernel/BKE_mesh_tangent.h
new file mode 100644
index 00000000000..cb3100c1c2f
--- /dev/null
+++ b/source/blender/blenkernel/BKE_mesh_tangent.h
@@ -0,0 +1,61 @@
+/*
+ * ***** 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.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+#ifndef __BKE_MESH_TANGENT_H__
+#define __BKE_MESH_TANGENT_H__
+
+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);
+
+/* 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__ */
+