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diff --git a/source/blender/blenkernel/BKE_mesh_sample.h b/source/blender/blenkernel/BKE_mesh_sample.h
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+++ b/source/blender/blenkernel/BKE_mesh_sample.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.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef __BKE_MESH_SAMPLE_H__
+#define __BKE_MESH_SAMPLE_H__
+
+/** \file BKE_mesh_sample.h
+ *  \ingroup bke
+ */
+
+struct DerivedMesh;
+struct Key;
+struct KeyBlock;
+
+struct MSurfaceSample;
+
+/* ==== Evaluate ==== */
+
+bool BKE_mesh_sample_eval(struct DerivedMesh *dm, const struct MSurfaceSample *sample, float loc[3], float nor[3], float tang[3]);
+bool BKE_mesh_sample_shapekey(struct Key *key, struct KeyBlock *kb, const struct MSurfaceSample *sample, float loc[3]);
+
+
+/* ==== Sampling ==== */
+
+/* Storage descriptor to allow generic data storage by arbitrary algorithms */
+typedef struct MSurfaceSampleStorage {
+	bool (*store_sample)(void *data, int capacity, int index, const struct MSurfaceSample *sample);
+	void *data;
+	int capacity;
+	int free_data;
+} MSurfaceSampleStorage;
+
+void BKE_mesh_sample_storage_single(struct MSurfaceSampleStorage *storage, struct MSurfaceSample *sample);
+void BKE_mesh_sample_storage_array(struct MSurfaceSampleStorage *storage, struct MSurfaceSample *samples, int capacity);
+void BKE_mesh_sample_storage_release(struct MSurfaceSampleStorage *storage);
+
+int BKE_mesh_sample_generate_random(struct MSurfaceSampleStorage *dst, struct DerivedMesh *dm, unsigned int seed, int totsample);
+
+typedef bool (*MeshSampleRayCallback)(void *userdata, float ray_start[3], float ray_end[3]);
+int BKE_mesh_sample_generate_raycast(struct MSurfaceSampleStorage *dst, struct DerivedMesh *dm, MeshSampleRayCallback ray_cb, void *userdata, int totsample);
+
+/* ==== Utilities ==== */
+
+struct ParticleSystem;
+struct ParticleData;
+struct BVHTreeFromMesh;
+
+bool BKE_mesh_sample_from_particle(struct MSurfaceSample *sample, struct ParticleSystem *psys, struct DerivedMesh *dm, struct ParticleData *pa);
+bool BKE_mesh_sample_to_particle(struct MSurfaceSample *sample, struct ParticleSystem *psys, struct DerivedMesh *dm, struct BVHTreeFromMesh *bvhtree, struct ParticleData *pa);
+
+#endif  /* __BKE_MESH_SAMPLE_H__ */