2 files changed, 5 insertions, 4 deletions
diff --git a/source/blender/blenlib/BLI_kdopbvh.h b/source/blender/blenlib/BLI_kdopbvh.h
index 1e56faaff55..d090784e450 100644
--- a/source/blender/blenlib/BLI_kdopbvh.h
+++ b/source/blender/blenlib/BLI_kdopbvh.h
@@ -57,6 +57,7 @@ typedef struct BVHTreeRayHit
 {
 	int index;			/* index of the tree node (untouched if no hit is found) */
 	float co[3];		/* coordinates of the hit point */
+	float no[3];		/* normal on hit point */
 	float dist;			/* distance to the hit point */
 } BVHTreeRayHit;
 
@@ -84,9 +85,9 @@ BVHTreeOverlap *BLI_bvhtree_overlap(BVHTree *tree1, BVHTree *tree2, int *result)
 float BLI_bvhtree_getepsilon(BVHTree *tree);
 
 /* find nearest node to the given coordinates (if nearest is given it will only search nodes where square distance is smaller than nearest->dist) */
-int BLI_bvhtree_find_nearest(BVHTree *tree, float *co, BVHTreeNearest *nearest, BVHTree_NearestPointCallback callback, void *userdata);
+int BLI_bvhtree_find_nearest(BVHTree *tree, const float *co, BVHTreeNearest *nearest, BVHTree_NearestPointCallback callback, void *userdata);
 
-int BLI_bvhtree_ray_cast(BVHTree *tree, float *co, float *dir, BVHTreeRayHit *hit, BVHTree_RayCastCallback callback, void *userdata);
+int BLI_bvhtree_ray_cast(BVHTree *tree, const float *co, const float *dir, BVHTreeRayHit *hit, BVHTree_RayCastCallback callback, void *userdata);
 
 #endif // BLI_KDOPBVH_H
 
diff --git a/source/blender/blenlib/intern/BLI_kdopbvh.c b/source/blender/blenlib/intern/BLI_kdopbvh.c
index 73bc3e6a9bc..58a8f9f845c 100644
--- a/source/blender/blenlib/intern/BLI_kdopbvh.c
+++ b/source/blender/blenlib/intern/BLI_kdopbvh.c
@@ -925,7 +925,7 @@ static void dfs_find_nearest(BVHNearestData *data, BVHNode *node)
 	}
 }
 
-int BLI_bvhtree_find_nearest(BVHTree *tree, float *co, BVHTreeNearest *nearest, BVHTree_NearestPointCallback callback, void *userdata)
+int BLI_bvhtree_find_nearest(BVHTree *tree, const float *co, BVHTreeNearest *nearest, BVHTree_NearestPointCallback callback, void *userdata)
 {
 	int i;
 
@@ -1051,7 +1051,7 @@ static void dfs_raycast(BVHRayCastData *data, BVHNode *node)
 
 
 
-int BLI_bvhtree_ray_cast(BVHTree *tree, float *co, float *dir, BVHTreeRayHit *hit, BVHTree_RayCastCallback callback, void *userdata)
+int BLI_bvhtree_ray_cast(BVHTree *tree, const float *co, const float *dir, BVHTreeRayHit *hit, BVHTree_RayCastCallback callback, void *userdata)
 {
 	int i;
 	BVHRayCastData data;