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diff --git a/source/blender/makesdna/DNA_hair_types.h b/source/blender/makesdna/DNA_hair_types.h
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+++ b/source/blender/makesdna/DNA_hair_types.h
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+/*
+ * ***** 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.
+ *
+ * Contributor(s): Blender Foundation
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ *
+ */
+
+/** \file DNA_hair_types.h
+ *  \ingroup DNA
+ */
+
+#ifndef __DNA_HAIR_TYPES_H__
+#define __DNA_HAIR_TYPES_H__
+
+#include "DNA_defs.h"
+#include "DNA_listBase.h"
+#include "DNA_ID.h"
+#include "DNA_meshdata_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Root point (follicle) of a hair on a surface */
+typedef struct HairFollicle {
+	/* Sample on the scalp mesh for the root vertex */
+	MeshSample mesh_sample;
+	/* Parent curve indices for shape interpolation */
+	unsigned int parent_index[4];
+	/* Parent curve weights for shape interpolation */
+	float parent_weight[4];
+} HairFollicle;
+
+/* Collection of hair roots on a surface */
+typedef struct HairPattern {
+	struct HairFollicle *follicles;
+	int num_follicles;
+	int pad;
+} HairPattern;
+
+typedef struct HairGuideCurve {
+	/* Sample on the scalp mesh for the root vertex */
+	MeshSample mesh_sample;
+	/* Offset in the vertex array where the curve starts */
+	int vertstart;
+	/* Number of vertices in the curve */
+	int numverts;
+} HairGuideCurve;
+
+typedef struct HairGuideVertex {
+	int flag;
+	float co[3];
+} HairGuideVertex;
+
+typedef struct HairSystem {
+	int flag;
+	int pad;
+	
+	/* Set of hair follicles on the scalp mesh */
+	struct HairPattern *pattern;
+	
+	/* Curves for guiding hair fibers */
+	struct HairGuideCurve *curves;
+	/* Control vertices on guide curves */
+	struct HairGuideVertex *verts;
+	/* Number of guide curves */
+	int totcurves;
+	/* Number of guide curve vertices */
+	int totverts;
+	
+	/* Material used for drawing and rendering hair fibers */
+	int material_index;
+	int pad2;
+	
+	/* Data buffers for drawing */
+	void *draw_batch_cache;
+	/* Texture buffer for drawing */
+	void *draw_texture_cache;
+} HairSystem;
+
+typedef enum eHairSystemFlag
+{
+	/* Guide curve positions have changed, rebind hair follicles */
+	HAIR_SYSTEM_UPDATE_FOLLICLE_BINDING = (1 << 8),
+} eHairSystemFlag;
+
+typedef struct HairDrawSettings
+{
+	short follicle_mode;
+	short pad1;
+	int pad2;
+} HairDrawSettings;
+
+typedef enum eHairDrawFollicleMode
+{
+	HAIR_DRAW_FOLLICLE_NONE     = 0,
+	HAIR_DRAW_FOLLICLE_POINTS   = 1,
+	HAIR_DRAW_FOLLICLE_AXES     = 2,
+} eHairDrawFollicleMode;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __DNA_HAIR_TYPES_H__ */