diff options
author | Daniel Genrich <daniel.genrich@gmx.net> | 2008-08-07 21:27:29 +0400 |
---|---|---|
committer | Daniel Genrich <daniel.genrich@gmx.net> | 2008-08-07 21:27:29 +0400 |
commit | c25bb4685acf53fd98f628c5ed18881d3c1a4cee (patch) | |
tree | 348eab73d3b42e9eae66e8eb9b1354c6839e4b88 /source/blender/blenkernel/BKE_bvhutils.h | |
parent | 15952fb26caccc5207234b768bf542070c0ec404 (diff) |
BVH-KDOP update (merge from shrinkwrap branch): supports raytracing, nearest neighbour, non-recursive now, faster than kdtree.c implementation normaly, divided into 2 sources: generla structure in blenlib, mesh/derivedmesh depending interface stuff in blenkernel
Diffstat (limited to 'source/blender/blenkernel/BKE_bvhutils.h')
-rw-r--r-- | source/blender/blenkernel/BKE_bvhutils.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/source/blender/blenkernel/BKE_bvhutils.h b/source/blender/blenkernel/BKE_bvhutils.h new file mode 100644 index 00000000000..dd9ea61f24b --- /dev/null +++ b/source/blender/blenkernel/BKE_bvhutils.h @@ -0,0 +1,98 @@ +/** + * + * $Id$ + * + * ***** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * The Original Code is Copyright (C) 2006 by NaN Holding BV. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): André Pinto + * + * ***** END GPL LICENSE BLOCK ***** + */ +#ifndef BKE_BVHUTILS_H +#define BKE_BVHUTILS_H + +#include "BLI_kdopbvh.h" + +/* + * This header encapsulates necessary code to buld a BVH + */ + +struct DerivedMesh; +struct MVert; +struct MFace; + +/* + * struct that kepts basic information about a BVHTree build from a mesh + */ +typedef struct BVHTreeFromMesh +{ + struct BVHTree *tree; + + /* default callbacks to bvh nearest and raycast */ + BVHTree_NearestPointCallback nearest_callback; + BVHTree_RayCastCallback raycast_callback; + + /* Mesh represented on this BVHTree */ + struct DerivedMesh *mesh; + + /* Vertex array, so that callbacks have instante access to data */ + struct MVert *vert; + struct MFace *face; + + /* radius for raycast */ + float sphere_radius; + +} BVHTreeFromMesh; + +/* + * Builds a bvh tree where nodes are the vertexs of the given mesh. + * Configures BVHTreeFromMesh. + * + * The tree is build in mesh space coordinates, this means special care must be made on queries + * so that the coordinates and rays are first translated on the mesh local coordinates. + * Reason for this is that later bvh_from_mesh_* might use a cache system and so it becames possible to reuse + * a BVHTree. + * + * free_bvhtree_from_mesh should be called when the tree is no longer needed. + */ +void bvhtree_from_mesh_verts(struct BVHTreeFromMesh *data, struct DerivedMesh *mesh, float epsilon, int tree_type, int axis); + +/* + * Builds a bvh tree where nodes are the faces of the given mesh. + * Configures BVHTreeFromMesh. + * + * The tree is build in mesh space coordinates, this means special care must be made on queries + * so that the coordinates and rays are first translated on the mesh local coordinates. + * Reason for this is that later bvh_from_mesh_* might use a cache system and so it becames possible to reuse + * a BVHTree. + * + * free_bvhtree_from_mesh should be called when the tree is no longer needed. + */ +void bvhtree_from_mesh_faces(struct BVHTreeFromMesh *data, struct DerivedMesh *mesh, float epsilon, int tree_type, int axis); + +/* + * Frees data allocated by a call to bvhtree_from_mesh_*. + */ +void free_bvhtree_from_mesh(struct BVHTreeFromMesh *data); + +#endif + |